Toyota Avalon (XX50): XM Tuner Antenna Disconnected (B15FE,B15FF). GVIF Disconnected (from Extension Module to H/U) (B153A). AV Signal Stoppage (Low Battery Voltage) (B158F)
XM Tuner Antenna Disconnected (B15FE,B15FF)
DESCRIPTION
These DTCs are
stored when a malfunction occurs in the telephone antenna assembly which
is connected to the radio and display receiver assembly.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|
B15FE | XM Tuner Antenna Disconnected |
The telephone antenna assembly is not connected |
- No. 4 antenna cord sub-assembly
- No. 3 antenna cord sub-assembly
- No. 2 antenna cord sub-assembly
- Telephone antenna assembly
- Radio and display receiver assembly
|
| B15FF |
XM Tuner Antenna Short |
A short occurs in the telephone antenna assembly |
- No. 4 antenna cord sub-assembly
- No. 3 antenna cord sub-assembly
- No. 2 antenna cord sub-assembly
- Telephone antenna assembly
- Radio and display receiver assembly
|
CAUTION / NOTICE / HINT
NOTICE:
- Depending on the parts that are replaced during vehicle inspection or
maintenance, performing initialization, registration or calibration may
be needed. Refer to Precaution for Navigation System.
Click here 
- When replacing the radio and display receiver assembly, always replace
it with a new one. If a radio and display receiver assembly which was
installed to another vehicle is used, the following may occur:
- A communication malfunction DTC may be stored.
- The radio and display receiver assembly may not operate normally.
PROCEDURE
|
1. | REPLACE NO. 4 ANTENNA CORD SUB-ASSEMBLY |
(a) Replace the No. 4 antenna cord sub-assembly with a new or known good one.
Click here
(b) Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs
(c) Recheck for DTCs and check that no DTCs are output.
Body Electrical > Navigation System > Trouble Codes
OK:
No DTCs are output.
| OK |  |
END |
|
NG |
 | |
| 2. |
REPLACE NO. 3 ANTENNA CORD SUB-ASSEMBLY |
(a) Replace the No. 3 antenna cord sub-assembly with a new or known good one.
Click here
(b) Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs
(c) Recheck for DTCs and check that no DTCs are output.
Body Electrical > Navigation System > Trouble Codes
OK:
No DTCs are output.
| OK | |
END |
|
NG | |
| |
| 3. |
REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY |
(a) Replace the No. 2 antenna cord sub-assembly with a new or known good one.
Click here
(b) Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs
(c) Recheck for DTCs and check that no DTCs are output.
Body Electrical > Navigation System > Trouble Codes
OK:
No DTCs are output.
| OK | |
END |
|
NG | |
| |
| 4. |
REPLACE TELEPHONE ANTENNA ASSEMBLY |
(a) Replace the telephone antenna assembly with a new or known good one.
Click here
(b) Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs
(c) Recheck for DTCs and check that no DTCs are output.
Body Electrical > Navigation System > Trouble Codes
OK:
No DTCs are output.
| OK | |
END |
| NG |
| REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
GVIF Disconnected (from Extension Module to H/U) (B153A)
DESCRIPTION
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|
B153A | GVIF Disconnected (from Extension Module to H/U) |
GVIF disconnected (from navigation ECU to radio and display receiver assembly) |
- Harness or connector
- Navigation ECU
- Radio and display receiver assembly
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Depending on the parts that are replaced during vehicle inspection or
maintenance, performing initialization, registration or calibration may
be needed. Refer to Precaution for Navigation System.
Click here 
- When replacing the radio and display receiver assembly or navigation
ECU, always replace it with a new one. If a radio and display receiver
assembly or navigation ECU which was installed to another vehicle is
used, the following may occur:
- A communication malfunction DTC may be stored.
- The radio and display receiver assembly or navigation ECU may not operate normally.
PROCEDURE
(a) Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs
(b) Recheck for DTCs and check that no DTCs are output.
Body Electrical > Navigation System > Trouble Codes
OK:
No DTCs are output.
| OK |  |
USE SIMULATION METHOD TO CHECK |
|
NG |
 | |
| 2. |
CHECK HARNESS OR CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - NAVIGATION ECU) |
| (a) Disconnect the G109 navigation ECU connector. |
 |
|
*a | Front view of wire harness connector
(to Radio and Display Receiver Assembly) | |
*b | Front view of wire harness connector
(to Navigation ECU) | | |
(b) Disconnect the G110 radio and display receiver assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|
G109-1 (GVO-) - G110-1 (GV2-) |
Always | Below 1 Ω |
|
G109-2 (GVO+) - G110-2 (GV2+) |
Always | Below 1 Ω |
|
G109-3 (GVG1) - G110-3 (GVG2) |
Always | Below 1 Ω |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 3. |
REPLACE NAVIGATION ECU |
(a) Replace the navigation ECU with a new one.
Click here
|
NEXT | |
| |
(a) Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs
(b) Recheck for DTCs and check that no DTCs are output.
Body Electrical > Navigation System > Trouble Codes
OK:
No DTCs are output.
| OK | |
END (NAVIGATION ECU IS DEFECTIVE) |
| NG |
| REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
AV Signal Stoppage (Low Battery Voltage) (B158F)
DESCRIPTION
This DTC is
stored when a video or audio signal is interrupted due to battery
voltage input to the radio and display receiver assembly dropping
temporarily.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|
B158F | AV Signal Stoppage (Low Battery Voltage) |
A video or audio signal is interrupted when the battery voltage drops |
- Radio and display receiver assembly
- Harness or connector
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Depending on the parts that are replaced during vehicle inspection or
maintenance, performing initialization, registration or calibration may
be needed. Refer to Precaution for Navigation System.
Click here 
- When replacing the radio and display receiver assembly, always replace
it with a new one. If a radio and display receiver assembly which was
installed to another vehicle is used, the following may occur:
- A communication malfunction DTC may be stored.
- The radio and display receiver assembly may not operate normally.
- Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
|
1. | CHECK VEHICLE SIGNAL (OPERATION CHECK) |
| (a) Enter the "Vehicle Signal Check Mode" screen. Refer to Check Vehicle Signal in Operation Check.
Click here | |
(b) Measure the battery voltage.
Standard Voltage:
11 to 14 V
HINT:
This display is updated once per second.
| NG |
 | GO TO STEP 3 |
|
OK |
 | |
(a) Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs
(b) Recheck for DTCs and check that no DTCs are output.
Body Electrical > Navigation System > Trouble Codes
OK:
No DTCs are output.
| OK | |
END |
| NG |
| REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
| 3. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY POWER SOURCE) |
(a) Disconnect the G3 radio and display receiver assembly connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Condition |
Specified Condition |
|
G3-4 (+B1) - Body ground |
Always | 11 to 14 V |
| OK |
| REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
