Toyota Avalon (XX50): Intelligent Clearance Sonar System(for Gasoline Model)

Stop Light Relay Circuit (C1A4B)

DESCRIPTION

When a stop light relay circuit malfunction signal sent from the electronically controlled brake system is detected by the clearance warning ECU assembly, DTC C1A4B is stored.

CAUTION / NOTICE / HINT

NOTICE:

• After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

  Click here

• After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

  Click here

• When DTC C1A4B is stored, there may be a malfunction in the lighting system. Inspect the lighting system before performing the following procedure.

  for Gasoline Model with Cornering Light: Click here

  for Gasoline Model without Cornering Light: Click here

PROCEDURE

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

HINT:

After turning the engine switch from off to on (IG), wait 4 seconds or more before checking for DTCs.

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

HINT:

• DTC C1A4B is stored when a malfunction signal sent from the electronically controlled brake system is detected.
• If the malfunctioning part has been repaired or replaced before rechecking for DTCs, DTC C1A4B will not be output again.
• If DTC C1A4B is output frequently, duplicate the conditions that cause the problem symptoms and perform troubleshooting again, even though the DTC was not output when rechecking for DTCs.

  Click here

A

GO TO PRE-COLLISION SYSTEM

B

USE SIMULATION METHOD TO CHECK

ENG / EHV Device (C1A40)

DESCRIPTION

When a EFI system malfunction signal sent by the ECM is detected by the clearance warning ECU assembly, DTC C1A40 is stored.

CAUTION / NOTICE / HINT

NOTICE:

• After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

  Click here

• After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

  Click here

PROCEDURE

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

HINT:

After turning the engine switch from off to on (IG), wait 4 seconds or more before checking for DTCs.

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

HINT:

• DTC C1A40 is stored when a malfunction signal sent from the EFI system is detected.
• If the malfunctioning part has been repaired or replaced before rechecking for DTCs, DTC C1A40 will not be output again.
• If DTC C1A40 is output frequently, duplicate the conditions that cause the problem symptoms and perform troubleshooting again, even though the DTC was not output when rechecking for DTCs.

  Click here

A

GO TO EFI SYSTEM

B

USE SIMULATION METHOD TO CHECK

Brake System (C1A50)

DESCRIPTION

When an vehicle stability control system malfunction signal sent from the skid control ECU is detected by the clearance warning ECU assembly, DTC C1A50 is stored.

CAUTION / NOTICE / HINT

NOTICE:

• After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

  Click here

• After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

  Click here

PROCEDURE

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

HINT:

After turning the engine switch from off to on (IG), wait 4 seconds or more before checking for DTCs.

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

HINT:

• DTC C1A50 is stored when a malfunction signal sent from the electronically controlled brake system is detected.
• If the malfunctioning part has been repaired or replaced before rechecking for DTCs, DTC C1A50 will not be output again.
• If DTC C1A50 is output frequently, duplicate the conditions that cause the problem symptoms and perform troubleshooting again, even though the DTC was not output when rechecking for DTCs.

  Click here

A

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM

B

USE SIMULATION METHOD TO CHECK

Steering Angle Midpoint Initial Setting Incomplete (C1AEA)

DESCRIPTION

When the clearance warning ECU assembly detects that the steering angle neutral point memorization is incomplete during self diagnosis, C1AEA is stored.

CAUTION / NOTICE / HINT

NOTICE:

• After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

  Click here

• After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

  Click here

PROCEDURE

(a) Perform steering angle neutral point memorization.

Click here

NEXT

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

HINT:

• If DTC C1AEA is output, perform steering angle neutral point memorization.
• If DTC C1AEA is still output after performing steering angle neutral point memorization 3 times, replace the clearance warning ECU assembly.

A

REPLACE CLEARANCE WARNING ECU ASSEMBLY

B

USE SIMULATION METHOD TO CHECK

ICS Detection Area Adjustment Incomplete (C1AF0)

DESCRIPTION

When ICS detection area adjustment is incomplete, the clearance warning ECU assembly stores DTC C1AF0.

CAUTION / NOTICE / HINT

NOTICE:

• After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

  Click here

• After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

  Click here

• When continuing with the inspection, confirm that the necessary procedures (adjustment, calibration, initialization or registration) have been completed before proceeding.

PROCEDURE

(a) Perform intelligent clearance sonar system registration.

Click here

NEXT

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

HINT:

If DTC C1AF0 is still output after performing intelligent clearance sonar system registration 3 times, replace the clearance warning ECU assembly.

A

REPLACE CLEARANCE WARNING ECU ASSEMBLY

B

USE SIMULATION METHOD TO CHECK

Fr Sensor Initialization Incomplete (C1AF3)

DESCRIPTION

When it is judged that the front sensors have not been initialized, the clearance warning ECU assembly stores DTC C1AF3.

CAUTION / NOTICE / HINT

NOTICE:

• If DTC C1AF3 is output after performing repairs, turn the engine switch on (IG) and turn the intelligent clearance sonar system on to clear the DTC.

  Click here

• After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

  Click here

PROCEDURE

(a) Initialize the front center ultrasonic sensor and front corner ultrasonic sensor.

Click here

NEXT

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

HINT:

After turning the engine switch from off to on (IG), wait 10 seconds or more before checking for DTCs.

HINT:

If DTC C1AF3 is still output after initializing the front center ultrasonic sensor and front corner ultrasonic sensor 3 times, replace the clearance warning ECU assembly.

A

REPLACE CLEARANCE WARNING ECU ASSEMBLY

B

END (FRONT SENSORS WERE NOT INITIALIZED)

Rr Sensor Initialization Incomplete (C1AF4)

DESCRIPTION

When it is judged that the rear sensors have not been initialized, the clearance warning ECU assembly stores DTC C1AF4.

CAUTION / NOTICE / HINT

NOTICE:

• If DTC C1AF4 is output after performing repairs, turn the engine switch on (IG) and turn the intelligent clearance sonar system on to clear the DTC.

  Click here

• After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

  Click here

PROCEDURE

(a) Initialize the rear center ultrasonic sensor and rear corner ultrasonic sensor.

Click here

NEXT

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

HINT:

After turning the engine switch from off to on (IG), wait 10 seconds or more before checking for DTCs.

HINT:

if DTC C1AF4 is still output after initializing the rear center ultrasonic sensor and rear corner ultrasonic sensor 3 times, replace the clearance warning ECU assembly.

A

REPLACE CLEARANCE WARNING ECU ASSEMBLY

B

END (REAR SENSORS WERE NOT INITIALIZED)

RCTB Sensor (C1AF7)

DESCRIPTION

This DTC is stored when the clearance warning ECU assembly receives a signal from the blind spot monitor system via CAN communication indicating a malfunction in the blind spot monitor sensor.

PROCEDURE

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

HINT:

After turning the engine switch from off to on (IG), wait 4 seconds or more before checking for DTCs.

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

HINT:

• DTC C1AF7 is stored when a malfunction signal sent from the blind spot monitor system is detected.
• If the malfunctioning part has been repaired or replaced before rechecking for DTCs, DTC C1AF7 will not be output again.
• If DTC C1AF7 is output frequently, duplicate the conditions that cause the problem symptoms and perform troubleshooting again, even though the DTC was not output when rechecking for DTCs.

A

GO TO BLIND SPOT MONITOR SYSTEM

B

USE SIMULATION METHOD TO CHECK

Blind Spot Monitor Beam Axis Inspection Incomplete (C1AF9)

DESCRIPTION

This DTC is stored when the clearance warning ECU assembly receives a signal from the blind spot monitor system via CAN communication indicating that the beam axis inspection is incomplete.

PROCEDURE

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

HINT:

After turning the engine switch from off to on (IG), wait 4 seconds or more before checking for DTCs.

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

HINT:

• DTC C1AF9 is stored when a malfunction signal sent from the blind spot monitor system is detected.
• If the malfunctioning part has been repaired or replaced before rechecking for DTCs, DTC C1AF9 will not be output again.
• If DTC C1AF9 is output frequently, duplicate the conditions that cause the problem symptoms and perform troubleshooting again, even though the DTC was not output when rechecking for DTCs.

  Click here

A

GO TO BLIND SPOT MONITOR SYSTEM

B

USE SIMULATION METHOD TO CHECK

Blind Spot Monitor Beam Axis Misalignment (C1AFA)

DESCRIPTION

This DTC is stored when the clearance warning ECU assembly receives a signal from the blind spot monitor system via CAN communication indicating blind spot monitor beam axis misalignment.

PROCEDURE

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

HINT:

After turning the engine switch from off to on (IG), wait 4 seconds or more before checking for DTCs.

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

HINT:

• DTC C1AFA is stored when a malfunction signal sent from the blind spot monitor system is detected.
• If the malfunctioning part has been repaired or replaced before rechecking for DTCs, DTC C1AFA will not be output again.
• If DTC C1AFA is output frequently, duplicate the conditions that cause the problem symptoms and perform troubleshooting again, even though the DTC was not output when rechecking for DTCs.

  Click here

A

GO TO BLIND SPOT MONITOR SYSTEM

B

USE SIMULATION METHOD TO CHECK

Communication Error From Clearance Sonar ECU to VSC (C164B)

DESCRIPTION

The electronically controlled brake system receives intelligent clearance sonar system information from the clearance warning ECU assembly via CAN communication. When it is determined that there is a communication error between the skid control ECU and clearance warning ECU assembly, DTC C164B is stored.

CAUTION / NOTICE / HINT

NOTICE:

• After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

  Click here

• After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

  Click here

PROCEDURE

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

HINT:

After turning the engine switch from off to on (IG), wait 4 seconds or more before checking for DTCs.

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

HINT:

• If DTC C164B is not output after clearing the DTCs, an intermittent communication error between the clearance warning ECU assembly and skid control ECU is suspected.
• If DTC C164B is output frequently, duplicate the conditions that cause the problem symptoms and perform troubleshooting again, even though the DTC was not output when rechecking for DTCs.

  Click here

B

USE SIMULATION METHOD TO CHECK

A

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

B

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM

A

(a) Replace the clearance warning ECU assembly with a known good one.

Click here

NEXT

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

A

REPLACE SKID CONTROL ECU

B

END (CLEARANCE WARNING ECU ASSEMBLY DEFECTIVE)

Wheel Speed Sensor Malfunction (C164D)

DESCRIPTION

This DTC is stored when the clearance warning ECU assembly receives a wheel speed sensor (front speed sensor RH or front speed sensor LH, rear speed sensor RH or rear speed sensor LH) abnormality signal from the electronically controlled brake system via CAN communication.

CAUTION / NOTICE / HINT

NOTICE:

• After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

  Click here

• After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

  Click here

PROCEDURE

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

HINT:

After turning the engine switch from off to on (IG), wait 4 seconds or more before checking for DTCs.

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

HINT:

• DTC C164D is stored when a malfunction signal sent from the electronically controlled brake system is detected.
• If the malfunctioning part has been repaired or replaced before rechecking for DTCs, DTC C164D will not be output again.
• If DTC C164D is output frequently, duplicate the conditions that cause the problem symptoms and perform troubleshooting again, even though the DTC was not output when rechecking for DTCs.

  Click here

A

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM

B

USE SIMULATION METHOD TO CHECK

Stop Switch Circuit Malfunction (C164E)

DESCRIPTION

When a stop light switch assembly circuit malfunction signal sent from the electronically controlled brake system is detected by the clearance warning ECU assembly, DTC C164E is stored.

CAUTION / NOTICE / HINT

NOTICE:

• After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

  Click here

• After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

  Click here

PROCEDURE

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

HINT:

After turning the engine switch from off to on (IG), wait 4 seconds or more before checking for DTCs.

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

HINT:

• DTC C164E is stored when a malfunction signal sent from the electronically controlled brake system is detected.
• If the malfunctioning part has been repaired or replaced before rechecking for DTCs, DTC C164E will not be output again.
• If DTC C164E is output frequently, duplicate the conditions that cause the problem symptoms and perform troubleshooting again, even though the DTC was not output when rechecking for DTCs.

  Click here

A

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM

B

USE SIMULATION METHOD TO CHECK

Brake Hydraulic Pressure Malfunction (C164F)

DESCRIPTION

When a malfunction signal sent from the skid control ECU via CAN communication is detected by the clearance warning ECU assembly, DTC C164F is stored.

CAUTION / NOTICE / HINT

NOTICE:

• After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

  Click here

• After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

  Click here

PROCEDURE

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

HINT:

After turning the engine switch from off to on (IG), wait 4 seconds or more before checking for DTCs.

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

HINT:

• DTC C164F is stored when a malfunction signal sent from the electronically controlled brake system is detected.
• If the malfunctioning part has been repaired or replaced before rechecking for DTCs, DTC C164F will not be output again.
• If DTC C164F is output frequently, duplicate the conditions that cause the problem symptoms and perform troubleshooting again, even though the DTC was not output when rechecking for DTCs.

  Click here

A

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM

B

USE SIMULATION METHOD TO CHECK

Vehicle Information Unmatched (C168D)

DESCRIPTION

If the vehicle information stored in the main body ECU (multiplex network body ECU) which is sent via CAN communication during the clearance warning ECU assembly self-diagnosis does not match that of clearance warning ECU assembly, DTC C168D is stored.

CAUTION / NOTICE / HINT

NOTICE:

• After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

  Click here

• After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

  Click here

• When continuing with the inspection, confirm that the necessary procedures (adjustment, calibration, initialization or registration) have been completed before proceeding.

PROCEDURE

(a) Perform the following procedure to register the vehicle information.

Click here

NEXT

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

HINT:

After turning the engine switch from off to on (IG), wait 4 seconds or more before checking for DTCs.

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

HINT:

If DTC C168D is still output after registering the vehicle information 3 times, replace the clearance warning ECU assembly.

A

REPLACE CLEARANCE WARNING ECU ASSEMBLY

B

USE SIMULATION METHOD TO CHECK

ECU Malfunction (C1611)

DESCRIPTION

If the clearance warning ECU assembly detects an internal malfunction during self-diagnosis, DTC C1611 is stored.

CAUTION / NOTICE / HINT

NOTICE:

• After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

  Click here

• After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

  Click here

PROCEDURE

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

HINT:

After turning the engine switch from off to on (IG), wait 3 seconds or more before checking for DTCs.

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

A

REPLACE CLEARANCE WARNING ECU ASSEMBLY

B

USE SIMULATION METHOD TO CHECK

Open or Short in Steering Angle Sensor +B (C1625)

DESCRIPTION

This DTC is stored if the clearance warning ECU assembly receives a signal via CAN communication from the steering sensor that indicates a power supply problem.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

• After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

  Click here

• After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

  Click here

• Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

(a) Disconnect the G48 steering sensor connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

OK

REPLACE STEERING SENSOR

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

Steering Angle Sensor Failure (C1626)

DESCRIPTION

This DTC is stored if the clearance warning ECU assembly receives a signal via CAN communication from the steering sensor that indicates an internal malfunction.

CAUTION / NOTICE / HINT

NOTICE:

• After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

  Click here

• After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

  Click here

• When continuing with the inspection, confirm that the necessary procedures (adjustment, calibration, initialization or registration) have been completed before proceeding.

PROCEDURE

(a) Replace the steering sensor with a new or known good one.

Click here

NEXT

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

HINT:

After turning the engine switch from off to on (IG), wait 4 seconds or more before

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

A

REPLACE CLEARANCE WARNING ECU ASSEMBLY

B

END (STEERING SENSOR DEFECTIVE)

G Sensor Failure (C1647)

DESCRIPTION

The clearance warning sonar ECU assembly communicates with the airbag ECU assembly (yaw rate and acceleration sensor) via CAN communication, and if it is determined that the airbag ECU assembly (yaw rate and acceleration sensor) is malfunctioning, DTC C1647 is stored.

CAUTION / NOTICE / HINT

NOTICE:

• After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

  Click here

• After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

  Click here

PROCEDURE

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

HINT:

• DTC C1647 is stored when a malfunction signal sent from the electronically controlled brake system is detected.
• If the malfunctioning part has been repaired or replaced before rechecking for DTCs, DTC C1647 will not be output again.
• If DTC C1647 is output frequently, duplicate the conditions that cause the problem symptoms and perform troubleshooting again, even though the DTC was not output when rechecking for DTCs.

  Click here

A

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM

B

USE SIMULATION METHOD TO CHECK

Outside Air Temperature Sensor (C1652)

DESCRIPTION

When a malfunction signal sent from the air conditioning system via CAN communication is detected by the clearance warning ECU assembly, DTC C1652 is stored.

CAUTION / NOTICE / HINT

NOTICE:

• After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

  Click here

• After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

  Click here

PROCEDURE

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

HINT:

After turning the engine switch from off to on (IG), wait 13 seconds or more before checking for DTCs.

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

HINT:

• DTC C1652 is stored when a malfunction signal sent from the air conditioning system is detected.
• If the malfunctioning part has been repaired or replaced before rechecking for DTCs, DTC C1652 will not be output again.
• If DTC C1652 is output frequently, duplicate the conditions that cause the problem symptoms and perform troubleshooting again, even though the DTC was not output when rechecking for DTCs.

  Click here

A

GO TO AIR CONDITIONING SYSTEM

B

USE SIMULATION METHOD TO CHECK

Calibration

CALIBRATION

NOTICE:

When any of the following parts have been replaced, perform adjustment shown in the following table. If not, the intelligent clearance sonar system may not operate correctly.

PRECAUTION (PROCEDURE 1)

(a) The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during intelligent clearance sonar system removal/installation are shown below.

For the installation location of the ultrasonic sensors, refer to Parts Location.

Click here

• *: The steering sensor zero point can also be calibrated by driving the vehicle.

  Click here

PREPARATION (PROCEDURE 2)

(a) Preparation

• Digital angle gauge
• Digital angle gauge attachment
• Masking tape (To prevent damage)
• A level

SST: 09989-00020

(b) Confirm levelness of floor surface.

(1) Place a bubble level on a level surface and confirm that the bubble is centered.

NOTICE:

Make sure that there is no gravel, sand, etc., and that the surface is not undulating.

HINT:

By adjusting the direction of the bubble level, it is possible to find a position where the bubble is centered.

(2) Turn on the digital angle gauge.

(3) Place the digital angle gauge in the same location and direction as that of the bubble level where the levelness of the surface was confirmed.

NOTICE:

Confirm that the location and direction of the digital angle gauge is exactly the same as that of the bubble level.

(4) Press the "ZERO" switch to memorize the zero point (perfectly level).

NOTICE:

Make sure that the digital angle gauge does not move when pressing the switch. If the digital angle gauge moves when the switch is pressed, an incorrect zero point may be memorized and it will not be possible to accurately check for levelness.

(5) Using the digital angle gauge in which the zero point (perfectly level) has been memorized, measure the angle of the floor surface at the 4 positions at the front of the vehicle and the 4 positions at the rear of the vehicle as shown in the illustration. Write the measured values into the following worksheet.

NOTICE:

• Always position the digital angle gauge as shown in the illustration.
• Make sure that there is no gravel, sand, etc., and that the floor surface is not undulating.
• When measuring the angle of the floor surface, avoid uneven areas such as joints between tiles.

HINT:

If necessary, the digital angle gauge can be placed anywhere within the specific area when measuring the angle of the floor surface for positions A, C, F and H.

Confirmation Area

-

-

(6) Using the following worksheet, calculate the average of the measurements taken at the 4 positions in front of the vehicle, and calculate the average of the measurements taken at the 4 positions behind the vehicle. Confirm that the front measurement average and the rear measurement average are not more than approximately 0.37 degrees. Also, confirm that the front measurement average and the rear measurement average is less than 0.2 degrees.

NOTICE:

If the front measurement average and the rear measurement average are more than approximately 0.37 degrees or the difference between the front measurement average and the rear measurement average is 0.2 degrees or more, choose another work area as it is not possible to accurately check the installation angle of the sensors.

(7) Average the front measurement average and the rear measurement average, then round the answer to 1 decimal place (E.g. 0.0927 degrees is rounded to 0.1 degrees) to obtain the floor surface inclination value.

(8) Calibrate the digital angle gauge

Adjust the angle of the digital angle gauge until it reads the same value of the floor surface inclination, then press the "ZERO" switch to memorize the zero point (level with floor surface).

NOTICE:

Before pressing the "ZERO" switch, confirm that the digital angle gauge reading is positive if the floor angle inclination is positive, and negative if the floor angle inclination is negative.

(c) Prepare the digital angle gauge

(1) Attach the digital angle gauge attachment to the digital angle gauge.

SST: 09989-00020

(2) Attach masking tape to the digital angle gauge attachment.

(d) Remove all luggage from the vehicle.

(e) Adjust the tire inflation pressure to the specified pressure.

Click here

(f) Check the height of the vehicle.

Click here

SENSOR HEIGHT AND ALIGNMENT INSPECTION (PROCEDURE 3)

HINT:

Check if the installation angle of each ultrasonic sensor is appropriate.

(a) Preparation

(1) Visually check that the bumper, grill and ultrasonic sensors are installed properly and are not damaged.

NOTICE:

If the bumper, grill or any ultrasonic sensor is not installed correctly, the calibration may not be able to be completed.

(2) Check the tire pressures and adjust them if necessary.

Click here

NOTICE:

• Ensure that the vehicle is level in an area with no wind.
• Do not lean on the vehicle.
• Do not do anything that may affect the level of the vehicle during the calibration, such as getting in or out of the vehicle, or adding or removing luggage.

(b) Sensor height and alignment inspection

(c) Measure the installation height of the sensors.

for Bar Type Radiator Grille:

for Mesh Type Radiator Grille:

NOTICE:

If the installation height of a sensor is not as specified, it may not be possible to measure the sensor angles correctly. If so, unload the vehicle and measure the installation height of the sensors again.

HINT:

Use the center of the sensor as the measuring point.

(d) Using the digital angle gauge, measure the angles of each sensor. Write down the measured values.

(1) Measure the angle of the front sensors as shown in the illustration.

NOTICE:

Ensure that the digital angle gauge is flush with the face of the sensor.

(2) Measure the angle of the rear sensors.

NOTICE:

Ensure that the digital angle gauge is flush with the face of the sensor.

(3) Confirm that the angles of the sensors are as specified.

NOTICE:

The sensor angle is the measured sensor angle subtracted from 90°.

HINT:

• The digital angle gauge should indicate 90° when turned on its side.
• If the face of the sensor is tilted upwards, the sensor angle will be positive.

Standard Angle (Front Bumper):

Standard Angle (Rear Bumper):

(4) If the angle or height of the sensors is not as specified, confirm that the installation is correct and then perform troubleshooting again.

REGISTRATION (PROCEDURE 4)

(a) Preparation

(1) Confirm that the following DTCs are not output.

NOTICE:

If DTC C1AEC, C1AED, C1AF0, C1AF3, C1AF4, C1AEA or C168D are output at this point, it is not due to a malfunction. Proceed with the calibration.

(b) Connect the Techstream to the DLC3.

(c) Turn the engine switch on (IG).

(d) Turn the Techstream on.

(e) Enter the following menus: Body Electrical / Advanced Parking Guidance/ICS/Intuitive P/A / Utility.

(f) According to the display on the Techstream, perform calibration.

HINT:

If "Battery or Steering Sensor" is selected, further calibration is not required. (Bumper type registration is not required.)

(g) Enter the bumper type using the Techstream.

HINT:

If the clearance warning ECU assembly is replaced or removed and installed, it is necessary to perform bumper type registration.

(h) Using the Techstream, enter the measured sensor values.

NOTICE:

The sensor angle is the measured sensor angle subtracted from 90°.

HINT:

The digital angle gauge should indicate 90° when turned on its side.

(i) Disconnect the Techstream from the DLC3.

Customize Parameters

CUSTOMIZE PARAMETERS

CUSTOMIZE INTELLIGENT CLEARANCE SONAR SYSTEM

(a) Customizing with the Techstream.

NOTICE:

• When the customer requests a change in a function, first make sure that the function can be customized.
• Be sure to make a note of the current settings before customizing.
• When troubleshooting a function, first make sure that the function is set to the default setting.

(1) Connect the Techstream to the DLC3.

(2) Turn the engine switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Body Electrical / Advanced Parking Guidance/ICS/Intuitive P/A / Utility / Customize Setting.

(5) Select the setting by referring to the table below.

Data List / Active Test

DATA LIST / ACTIVE TEST

DATA LIST

NOTICE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

HINT:

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Advanced Parking Guidance/ICS/Intuitive P/A / Data List.

(e) Read the Data List according to the display on the Techstream.

ACTIVE TEST

HINT:

Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Chassis / ABS/VSC/TRAC / Active Test.

(e) According to the display on the Techstream, perform the Active Test.

(f) Enter the following menus: Body Electrical / Combination Meter / Active Test.

(g) According to the display on the Techstream, perform the Active Test.

(h) Enter the following menus: Body Electrical / Advanced Parking Guidance/ICS/Intuitive P/A / Active Test.

(i) According to the display on the Techstream, perform the Active Test.

Diagnosis System

DIAGNOSIS SYSTEM

DESCRIPTION

(a) Intelligent clearance sonar system data and Diagnostic Trouble Codes (DTCs) can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and to repair them.

CHECK DLC3

(a) Check the DLC3.

Click here

DESCRIPTION

(a) When the intelligent clearance sonar system is unavailable either temporarily or due to a malfunction, a warning message is displayed on the multi-information display.

Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Dtc Check / Clear

DTC CHECK / CLEAR

CHECK DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the intelligent clearance sonar system on.

(d) Turn the Techstream on.

(e) Enter the following menus: Body Electrical / Advanced Parking Guidance/ICS/Intuitive P/A / Trouble Codes.

(f) Check for DTCs.

Click here

CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the intelligent clearance sonar system on.

(d) Turn the Techstream on.

(e) Enter the following menus: Body Electrical / Advanced Parking Guidance/ICS/Intuitive P/A / Trouble Codes.

(f) Clear the DTCs.

Fail-safe Chart

FAIL-SAFE CHART

FAIL-SAFE FUNCTION

(a) If a malfunction is detected in the intelligent clearance sonar system, the warning message "ICS System Malfunction Visit Your Dealer" or "ICS Unavailable" is displayed on the multi-information display, the ICS OFF indicator blinks and the intelligent clearance sonar system control is prohibited as necessary.

(b) If the clearance warning ECU assembly judges that there is foreign matter on an ultrasonic sensor or detection of objects is not possible in severe weather such as snow, the warning message "ICS Unavailable" is displayed, the ICS OFF indicator blinks and control is cancelled. The warning message "ICS Unavailable" is temporarily displayed and turns off. The ICS OFF indicator blinks to inform the driver of the malfunction. When detection of an obstacle is possible, the ICS OFF indicator turns off and the intelligent clearance sonar system control returns to normal.

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

• Use the following procedure to troubleshoot the intelligent clearance sonar system.
• *: Use the Techstream.

PROCEDURE

NEXT

NEXT

(a) Measure the battery voltage.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, replace or recharge the battery before proceeding to the next step.

NEXT

(a) Use the Techstream to check if the CAN communication system is functioning normally.

Click here

B

GO TO CAN COMMUNICATION SYSTEM

A

NEXT

(a) Check for DTCs.

B

GO TO STEP 8

C

GO TO STEP 9

A

(a) Refer to Diagnostic Trouble Code Chart.

Click here

NOTICE:

The clearance warning ECU assembly outputs DTCs for the following system. When DTCs other than those in Diagnostic Trouble Code Chart for the intelligent clearance sonar system are output, refer to Diagnostic Trouble Code Chart for the relevant systems.

NEXT

GO TO STEP 11

(a) Refer to Symptom Simulation.

Click here

NEXT

(a) Refer to Problem Symptoms Table.

Click here

B

GO TO STEP 11

A

(a) Operation Check

Click here

(b) Terminals of ECU

Click here

(c) Data List / Active Test

Click here

NEXT

NEXT

NEXT

NEXT

NEXT

END

Operation Check

OPERATION CHECK

ICS OFF INDICATOR LIGHT OPERATION CHECK

(a) Turn the engine switch on (IG).

(b) Turn the intelligent clearance sonar system off and confirm that the ICS OFF indicator in the combination meter illuminates.

HINT:

If the intelligent clearance sonar system is not set to off in the customize settings, the intelligent clearance sonar system will operate when the engine switch is turned on (IG).

DETECTION AREA

(a) Intelligent clearance sonar system detection distance

• The ultrasonic sensors (front/rear center sensor) can detect objects up to a distance of approximately 4.0 m (13.124 ft.). However, the detection distance varies depending on the shape of the object.

  HINT:

  The detection range shown in the illustration is for when detecting an object that is 2.0 m (6.562 ft.) wide, 1.0 m (3.281 ft.) tall and is perpendicular to the ground.

• If the front/rear sensors and left/right sensors do not simultaneously detect an object, the intelligent clearance sonar function does not operate.

NOTICE:

Even if the intelligent clearance sonar system detects an object, the system may not operate depending on the vehicle conditions.

Parts Location

PARTS LOCATION

ILLUSTRATION

ILLUSTRATION

Precaution

PRECAUTION

PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL

NOTICE:

When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected.

PRECAUTION FOR SERVICING VEHICLE

(a) After ECUs or parts are removed and installed, or replaced during inspection or servicing the vehicle, it is necessary to perform certain procedures (adjustment, calibration, initialization or registration).

Click here

PRECAUTION FOR TROUBLESHOOTING

(a) When a terminal contact is loose or damaged or a part is improperly installed, the system may only temporarily return to normal if the part is removed and installed without thorough diagnosis and repair.

(b) In order to assist with diagnosis, check and make a note of related information such as DTCs and Freeze Frame Data before disconnecting any connectors or removing and installing parts.

(c) Since the system may be influenced by malfunctions in systems other than the intelligent clearance sonar system, be sure to check for any past and present DTCs in other systems.

HANDLING PRECAUTIONS FOR ECU OR SENSOR

(a) Unless specified by the inspection procedure, make sure that the engine switch is off when removing or installing each ECU or ultrasonic sensor.

(b) After removing and installing each ECU or ultrasonic sensor and all parts have been installed, check and ensure that no DTCs are output.

HANDLING PRECAUTIONS FOR INTELLIGENT CLEARANCE SONAR SYSTEM

(a) Make sure to observe the following points when using the intelligent clearance sonar system.

(1) Do not rely solely upon the intelligent clearance sonar system. Relying solely upon the intelligent clearance sonar system may lead to an unexpected accident.

• Driving safely is the sole responsibility of the driver. Pay careful attention to the surrounding conditions in order to ensure safe driving. The intelligent clearance sonar function can provide support to lessen the severity of collisions. However, it may not operate depending on the situation.
• The intelligent clearance sonar system is not a system to stop the vehicle completely. If the vehicle is stopped by the intelligent clearance sonar system, brake control by the intelligent clearance sonar system will be canceled after approximately 2 seconds. Depress the brake pedal immediately after the intelligent clearance sonar system operates.

(2) For the intelligent clearance sonar system to operate correctly, make sure to observe the following points for the ultrasonic sensors. If not, the ultrasonic sensors may not operate correctly, resulting a serious injury.

• Do not modify, disassemble or paint an ultrasonic sensor.
• When replacing an ultrasonic sensor, only use TOYOTA genuine parts.
• Do not subject an ultrasonic sensor or the area around an ultrasonic sensor to any impact.
• Do not damage an ultrasonic sensor. Always keep the ultrasonic sensors clean.

(3) Do not modify the suspension, as changes to the height or incline of the vehicle may prevent the ultrasonic sensors from correctly detecting obstacles. This may cause the system to fail to operate or to operate incorrectly.

(4) If the area around an ultrasonic sensor is subjected to an impact, equipment may not operate properly due to an ultrasonic sensor malfunction.

(5) When washing the vehicle with a high-pressure washer, do not spray water on the ultrasonic sensors or surrounding areas. High-pressure water can damage the ultrasonic sensors.

(6) When using steam to wash the vehicle, do not apply steam too close to the ultrasonic sensors. They may not function properly if subjected to steam.

PRECAUTIONS FOR INTELLIGENT CLEARANCE SONAR FUNCTION

(a) In the following situations, the intelligent clearance sonar system may not operate correctly.

(1) Environmental influence

• There is an object that prevents correct detection of an obstruction between the ultrasonic sensor and the obstruction.
• An object such as motorcycle, bicycle or pedestrian crosses in front of the vehicle.

(2) Influence from the weather

• When the vehicle is operated under the hot sun or in a freezing climate.
• When foreign matter such as ice, snow or mud is attached to an ultrasonic sensor. If the ultrasonic sensor is cleaned, the system will return to normal.
• It is raining heavily or the sensor is sprayed with water.
• The wind is strong.
• In severe weather such as fog, snow or a sandstorm.

(3) Influence from other ultrasonic waves

• When ultrasonic waves are received from the horn or parking sonar system of another vehicle, a motorcycle engine, or the air brakes of a large vehicle.
• Electronic components such as a backlit license plate (especially fluorescent types), fog lights, a fender pole or a wireless antenna are installed near an ultrasonic sensor.

(4) Changes in the vehicle

• The vehicle is tilted at a steep angle.
• The height of the vehicle has drastically changed due to loading (the nose tilts up or down).
• When the ultrasonic sensors become misaligned due to removal and installation or a collision, etc.
• When the tire diameter is not correct for the vehicle, the suspension has been modified, etc.

(b) The sensors cannot detect the following objects:

• Objects that absorb ultrasonic waves such as people (especially people wearing certain types of clothing), cotton or snow.
• Objects that are not perpendicular to the path of the vehicle, or are angled away from the ultrasonic sensors, or objects with uneven surfaces.
• Short objects
• Thin objects such as wire, rope or a post.
• Objects that are extremely close to a bumper.
• Objects that are tall and protrude toward the vehicle above the detection range of the sensors.

PRECAUTIONS FOR REAR CROSS TRAFFIC AUTO BRAKE FUNCTION

(a) The rear cross traffic auto brake function does not detect the following objects and vehicles:

• *: These objects may be detected depending on the situation.

(1) Stationary objects.

(2) Vehicles moving away from this vehicle

(3) Moving objects other than passenger vehicles such as pedestrians, motorcycles or bicycles

(4) Objects extremely close to the blind spot monitor sensors

(5) The speed of a vehicle approaching the right or left at the rear of the vehicle is less than 8 km/h (5 mph).

(6) The speed of a vehicle approaching the right or left at the rear of the vehicle is more than 24 km/h (15 mph).

(b) The rear cross traffic auto brake function may not be able to detect objects in the following situations:

(1) When the vehicle is parked in a very hot or cold environment.

(2) When foreign matter such as snow, ice or mud is attached to the rear bumper.

(3) During heavy rain or when water is splashing on the vehicle.

(4) When an approaching vehicle is blocked from a blind spot monitor sensor by an adjacent vehicle.

(5) When the vehicle is significantly tilted.

(6) When the vehicle is being towed.

(7) When the vehicle is equipped with lowered suspension or tires with a diameter different to that of the original.

(8) When the height of the vehicle has drastically changed (the nose is tilted up or down).

(9) When electronic components such as a backlit license plate, fog lights, a fender pole, wireless antenna or stickers are installed near the sensors.

(10) When a blind spot monitor sensor is misaligned.

(11) When several vehicles are approaching with little space between them.

(12) When a vehicle is approaching at high speed.

(c) The rear cross traffic auto brake function may not detect

(1) When a vehicle is approaching from behind.

(2) When the vehicle is parked at a shallow angle.

(3) When either of the blind spot monitor sensors is blocked such as by an adjacent vehicle.

(4) When the vehicle is parked on a steep hill with varying gradients.

(5) When a vehicle turns in close proximity to the vehicle

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

• Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
• Inspect the fuses and relays related to this system before inspecting the suspected areas below.

• *: w/ Headup Display System

System Description

SYSTEM DESCRIPTION

FUNCTION OF COMPONENTS

(a) The intelligent clearance sonar system consists of the following components:

• *: w/ Headup Display System

OPERATION CONDITIONS (Intelligent Clearance Sonar System)

(a) Driving torque restriction control

(1) Initiation Condition (When all of the following conditions are met, the driving torque restriction control is performed.)

• The intelligent clearance sonar system is turned on.
• An obstruction is detected by an ultrasonic sensor.
• The vehicle speed is 15 km/h (9 mph) or less.
• Collision is avoidable if emergency braking is performed by the driver.

(2) Cancellation Condition (When any of the following conditions are met, driving torque restriction control is cancelled.)

• The intelligent clearance sonar system is turned off.
• No obstruction is detected by the ultrasonic sensors.
• A possible collision is avoided.

(b) Brake Control

(1) Initiation Condition (When all of the following conditions are met, brake control is performed.)

• Driving torque restriction control is performed.
• A collision is likely even if emergency braking is performed by the driver.

(2) Cancellation Condition (When any of the following conditions are met, driving torque restriction control is cancelled.)

• The intelligent clearance sonar system is turned off.
• The brake pedal is depressed after the vehicle is stopped by brake control.
• Approximately 2 seconds have elapsed since the vehicle was stopped by brake control.
• No obstruction is detected by the ultrasonic sensors.

(c) Others

• When brake control is performed, the intelligent clearance sonar system turns off automatically. The intelligent clearance sonar system turns on again when no obstructions are detected by the ultrasonic sensors, the shift lever is moved from D to R or is moved from R to D, the engine switch is turned off and then turned on (IG), or by using the settings screen on the multi-information display. Intelligent clearance sonar system operation

OPERATION CONDITIONS (Rear Cross Traffic Auto Brake Function)

(a) Driving torque restriction control

(1) Initiation Condition (When all of the following conditions are met, the driving torque restriction control is performed.)

• The intelligent clearance sonar system is turned on.
• The shift lever is in R.
• When a vehicle is approaching the right or left at the rear of the vehicle.
• The vehicle speed is 15 km/h (9 mph) or less.
• When a collision with an approaching vehicle is imminent

(2) Cancellation Condition (When any of the following conditions are met, driving torque restriction control is cancelled.)

• The intelligent clearance sonar system is turned off.
• When the vehicle approaching the right or left at the rear of the vehicle is no longer detected.
• A possible collision is avoided.

(b) Brake Control

(1) Initiation Condition (When all of the following conditions are met, brake control is performed.)

• Driving torque restriction control is performed.
• A collision is likely even if emergency braking is performed by the driver.

(2) Cancellation Condition (When any of the following conditions are met, driving torque restriction control is cancelled.)

• The intelligent clearance sonar system is turned off.
• The brake pedal is depressed after the vehicle is stopped by brake control.
• Approximately 2 seconds have elapsed since the vehicle was stopped by brake control.
• When the vehicle approaching the right or left at the rear of the vehicle is no longer detected.

(c) Others

• When brake control is performed, the intelligent clearance sonar system turns off automatically. The intelligent clearance sonar system turns on again when no obstructions are detected by the ultrasonic sensors, the shift lever is moved from D to R or is moved from R to D, the engine switch is turned off and then turned on (IG), or by using the settings screen on the multi-information display. Rear cross traffic auto brake function operation

CASES OF UNNECESSARY INTELLIGENT CLEARANCE SONAR SYSTEM OPERATION

(a) In the following situations, the intelligent clearance sonar system may operate even when there is no possibility of a collision:

(1) Environmental influence

• There is an obstacle on the shoulder of the road (when the vehicle is driven in a narrow tunnel, on a narrow bridge or on a narrow road).
• The vehicle is being driven on grass or a gravel road.
• The vehicle is driven toward a banner or flag, a low-hanging branch or a boom barrier (such as those used at railroad crossings, toll gates and parking lots).

  HINT:

  Even if the intelligent clearance sonar system operates while on a railroad crossing, brake control will be automatically be canceled after approximately 2 seconds. Brake control can also be canceled by depressing the brake pedal. After brake control is canceled, depress the accelerator pedal to drive out of the railroad crossing.

• The vehicle is close to other vehicles while being parallel parked.
• The vehicle is being driven on a steep slope.
• There are objects located lower than the ultrasonic sensors.
• The vehicle is being driven on a narrow road.
• There is a rut or hole in the surface of the road.
• When the vehicle is driven on a metal cover (grating), such as those used for drainage ditches.

(2) Influence from the weather

• In severe weather such as fog, snow or a sandstorm.
• Foreign matter such as snow, ice or mud is attached to an ultrasonic sensor. (The system returns to normal when the foreign matter is removed.)
• When there is a downpour, or water is splashing on the vehicle.
• Water is covering an ultrasonic sensor due to a flooded road.

(3) Influence from other ultrasonic waves

• When ultrasonic waves are received from the horn or parking sonar system of another vehicle, a motorcycle engine, or the air brakes of a large vehicle.
• Electronic components such as a backlit license plate (especially fluorescent types), fog lights, a fender pole or a wireless antenna are installed near an ultrasonic sensor.

(4) Changes in the vehicle.

• The height of the vehicle has drastically changed due to loading (the nose tilts up or down).
• The vehicle is significantly tilted.
• An ultrasonic sensor is misaligned due to a collision, etc.

(5) Others

• The vehicle is being loaded onto a ship, truck or other transport vessel.
• The vehicle is being operated on a drum tester such as a speedometer tester, brake/speedometer combination tester or chassis dynamometer.
• When the vehicle is being towed.

CASES OF UNNECESSARY REAR CROSS TRAFFIC AUTO BRAKE FUNCTION OPERATION

(a) In the following situations, the rear cross traffic auto brake function may operate even when there is no possibility of a collision:

• When a vehicle is travelling along a road that is located extremely close to a parking space.
• When a vehicle is entering an adjacent parking space.
• When an object is passing extremely close to the vehicle.
• When there is a metal object behind the vehicle such as a guard rail, wall, traffic sign or parked vehicle that easily reflects radio waves.

MULTI-INFORMATION DISPLAY AND HEADUP DISPLAY (w/ Headup Display System)

(a) Intelligent clearance sonar system display

• The intelligent clearance sonar system uses the multi-information display in the combination meter assembly, the meter mirror sub-assembly and ICS OFF indicator light to indicate the operation status of the system.

(b) Intelligent clearance sonar system operation status display

• When the operation conditions are met, the clearance warning ECU assembly sends display or illumination request signals to the combination meter assembly, combination meter mirror ECU and ICS OFF indicator light. The clearance warning ECU assembly also sends buzzer sound request signals to the combination meter assembly.

(c) Intelligent clearance sonar system warning display

• When operation of the intelligent clearance sonar system is temporarily suspended due to a malfunction or dirty ultrasonic sensor, a message is displayed on the multi-information display in the combination meter assembly, the ICS OFF indicator light blinks and the buzzer sounds.

(d) Intelligent clearance sonar system off display

• When the intelligent clearance sonar system is off, the ICS OFF indicator light illuminates.

System Diagram

SYSTEM DIAGRAM

• *: w/ Headup Display System

Terminals Of Ecu

TERMINALS OF ECU

CLEARANCE WARNING ECU ASSEMBLY

(a) Disconnect the K34 clearance warning ECU assembly connector.

(b) Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.

(c) Reconnect the K34 clearance warning ECU assembly connector.

(d) Measure the voltage and check for pulses according to the value(s) in the table below.

(e) Using an oscilloscope, check waveform 1.

(1) Waveform 1 (Reference)

(f) Using an oscilloscope, check waveform 2.

(1) Waveform 2 (Reference)

HINT:

The amplitude of the waveform changes according to the set volume.

(g) Using an oscilloscope, check waveform 3.

(1) Waveform 3 (Reference)

COMBINATION METER ASSEMBLY

Click here

ECM

Click here

Lost Communication with Blind Spot Monitor Slave Module (U0232,U0233)

DESCRIPTION

This DTC is stored when the blind spot monitor sensor LH judges that there is a communication problem with the blind spot monitor sensor RH.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

• Inspect the fuses for circuits related to this system before performing the following procedure.
• Before measuring the resistance of the CAN bus, turn the engine switch off and leave the vehicle for 1 minute or more without operating the key or any switches, or opening or closing the doors. After that, disconnect the cable from the negative (-) battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.
• After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

  Click here

HINT:

• Operating the engine switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.
• Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.

PROCEDURE

(a) Check for DTCs.

B

GO TO STEP 5

C

GO TO STEP 8

A

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the P6 blind spot monitor sensor LH connector.

(c) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition P6-1 (CA2P) -P6-6 (CA2N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

*a Front view of wire harness connector (to Blind Spot Monitor Sensor LH)

NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - No. 26 JUNCTION CONNECTOR)

OK

Click here

NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - No. 26 JUNCTION CONNECTOR)

OK

Click here

OK

REPLACE BLIND SPOT MONITOR SENSOR LH

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the P5 blind spot monitor sensor RH connector.

(c) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition P5-1 (CA2P) -P5-6 (CA2N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

*a Front view of wire harness connector (to Blind Spot Monitor Sensor RH)

NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - No. 26 JUNCTION CONNECTOR)

OK

Click here

NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - No. 26 JUNCTION CONNECTOR)

OK

Click here

OK

REPLACE BLIND SPOT MONITOR SENSOR RH

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

(a) Turn the engine switch off.

(b) Disconnect the cable from the negative (-) battery terminal.

(c) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition Result K68-1 (CANH) -K68-12 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω Below 54 Ω: Short circuit between bus lines 70 Ω or more: Open circuit in main bus lines K68-1(CANH) - G45-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω: CANH short to ground K68-12(CANL) - G45-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω: CANL short to ground K68-1(CANH) - G45-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ: CANH +B short K68-12(CANL) - G45-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ: CANL +B short

*1 DLC3 *a Component with harness connected (No. 26 Junction Connector)

B

GO TO STEP 11

C

GO TO STEP 15

D

GO TO STEP 19

A

(a) Disconnect the K34 clearance warning ECU assembly connector.

(b) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition K34-37(CANH) - K34-38(CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher

*a Front view of wire harness connector (to Clearance Warning ECU Assembly)

NG

REPAIR OR REPLACE CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY - No. 26 JUNCTION CONNECTOR)

OK

(a) Clear the DTCs.

(b) Check for DTCs.

A

REPLACE CLEARANCE WARNING ECU ASSEMBLY

B

USE SIMULATION METHOD TO CHECK

(a) Disconnect the K68 No. 26 junction connector.

*a Front view of wire harness connector (to No. 26 Junction Connector) *b to blind spot monitor sensor RH CAN main wire *c to blind spot monitor sensor LH CAN main wire *d to clearance warning ECU assembly CAN wire

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

A

REPLACE No. 26 JUNCTION CONNECTOR

C

GO TO STEP 13

D

GO TO STEP 14

B

(a) Reconnect the K68 No. 26 junction connector.

(b) Disconnect the P5 blind spot monitor sensor RH connector.

*a Front view of wire harness connector (to Blind Spot Monitor Sensor RH)

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

OK

REPLACE BLIND SPOT MONITOR SENSOR RH

NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - No. 26 JUNCTION CONNECTOR)

(a) Reconnect the K68 No. 26 junction connector.

(b) Disconnect the P6 blind spot monitor sensor LH connector.

*a Front view of wire harness connector (to Blind Spot Monitor Sensor LH)

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

OK

REPLACE BLIND SPOT MONITOR SENSOR LH

NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - No. 26 JUNCTION CONNECTOR)

(a) Reconnect the K68 No. 26 junction connector.

(b) Disconnect the K34 clearance warning ECU assembly connector.

*a Front view of wire harness connector (to Clearance Warning ECU Assembly)

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

OK

REPLACE CLEARANCE WARNING ECU ASSEMBLY

NG

REPAIR OR REPLACE CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY - No. 26 JUNCTION CONNECTOR)

(a) Disconnect the K68 No. 26 junction connector.

*a Front view of wire harness connector (to No. 26 Junction Connector) *b to Blind Spot Monitor Sensor RH CAN main wire *c to Blind Spot Monitor Sensor LH CAN main wire *d to Clearance Warning ECU Assembly CAN wire

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

A

REPLACE No. 26 JUNCTION CONNECTOR

C

GO TO STEP 17

D

GO TO STEP 18

B

(a) Reconnect the K68 No. 26 junction connector.

(b) Disconnect the P5 blind spot monitor sensor RH connector.

*a Front view of wire harness connector (to Blind Spot Monitor Sensor RH)

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

OK

REPLACE BLIND SPOT MONITOR SENSOR RH

NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - No. 26 JUNCTION CONNECTOR)

(a) Reconnect the K68 No. 26 junction connector.

(b) Disconnect the P6 blind spot monitor sensor LH connector.

*a Front view of wire harness connector (to Blind Spot Monitor Sensor LH)

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

OK

REPLACE BLIND SPOT MONITOR SENSOR LH

NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - No. 26 JUNCTION CONNECTOR)

(a) Reconnect the K68 No. 26 junction connector.

(b) Disconnect the K34 clearance warning ECU assembly connector.

*a Front view of wire harness connector (to Clearance Warning ECU Assembly)

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

OK

REPLACE CLEARANCE WARNING ECU ASSEMBLY

NG

REPAIR OR REPLACE CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY - No. 26 JUNCTION CONNECTOR)

(a) Disconnect the K68 No. 26 junction connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

A

REPLACE No. 26 JUNCTION CONNECTOR

C

GO TO STEP 21

D

GO TO STEP 22

B

(a) Reconnect the K68 No. 26 junction connector.

(b) Disconnect the P5 blind spot monitor sensor RH connector.

(c) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition P5-1 (CA2P) - G45-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher P5-6 (CA2N) - G45-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher P5-1 (CA2P) - G45-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher P5-6 (CA2N) - G45-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

*1 DLC3 *a Front view of wire harness connector (to Blind Spot Monitor Sensor RH)

OK

REPLACE BLIND SPOT MONITOR SENSOR RH

NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - No. 26 JUNCTION CONNECTOR)

(a) Reconnect the K68 No. 26 junction connector.

(b) Disconnect the P6 blind spot monitor sensor LH connector.

(c) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition P6-1 (CA2P) - G45-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher P6-6 (CA2N) - G45-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher P6-1 (CA2P) - G45-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher P6-6 (CA2N) - G45-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

*1 DLC3 *a Front view of wire harness connector (to Blind Spot Monitor Sensor LH)

OK

REPLACE BLIND SPOT MONITOR SENSOR LH

NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - No. 26 JUNCTION CONNECTOR)

(a) Reconnect the K68 No. 26 junction connector.

(b) Disconnect the K34 clearance warning ECU assembly connector.

*1 DLC3 *a Front view of wire harness connector (to Clearance Warning ECU Assembly)

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

OK

REPLACE CLEARANCE WARNING ECU ASSEMBLY

NG

REPAIR OR REPLACE CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY - No. 26 JUNCTION CONNECTOR)

CAN Communication Failure (Message Registry) (U1000)

DESCRIPTION

When the clearance warning ECU assembly determines that the CAN communication circuit is malfunctioning during self diagnosis, DTC U1000 is stored.

PROCEDURE

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

HINT:

After turning the engine switch from off to on (IG), wait 10 seconds or more before checking for DTCs.

(b) Clear the DTCs according to the screen on the Techstream.

(c) Recheck for DTCs.

OK:

DTC U1000 is not output.

HINT:

• If DTC U1000 is not output after clearing the DTCs, an intermittent CAN communication circuit malfunction is suspected.
• If DTC U1000 is output frequently, replace the clearance warning ECU assembly, even though the DTC was not output when rechecking for DTCs.

  Click here

OK

USE SIMULATION METHOD TO CHECK

NG

REPLACE CLEARANCE WARNING ECU ASSEMBLY

Utility

UTILITY

FREEZE FRAME DATA

NOTICE:

• Freeze frame data is stored and updated each time the brakes are operated. Only the latest 30 sets of data are stored.
• Using the Techstream, make sure to save the data before performing a reproduction test as the data will be updated.

  HINT:

  The freeze frame data that is stored and updated each time the brakes are operated is stored in a different area to that of DTC freeze frame data.

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical /Advanced Parking Guidance/ICS/Intuitive P/A / Utility.

(e) Read the Utility according to the display on the Techstream.

Vehicle Control History

VEHICLE CONTROL HISTORY

Vehicle Control History

HINT:

Part of the control history can be confirmed using the vehicle control history.

Click here