DESCRIPTION The navigation receiver assembly and stereo component amplifier assembly are connected via AVC-LAN communication.
When
an AVC-LAN communication error occurs between the navigation receiver
assembly and stereo component amplifier assembly, this DTC will be
stored. |
DTC Code | DTC Detection Condition |
Trouble Area | | B15D3 |
When either condition below is met:
- Stereo component amplifier assembly is/was not connected while the ignition switch is ACC or ON.
- Communication between the master unit and the stereo component amplifier assembly is not possible when the engine is started.
|
- Stereo component amplifier assembly
- Navigation receiver assembly
- Harness or connector
|
HINT:
- Even if no fault is present, this DTC may be stored depending on the battery condition.
- The navigation receiver assembly is the master unit.
WIRING DIAGRAM
 CAUTION / NOTICE / HINT
NOTICE: Inspect the fuses for circuits related to this system before performing the following inspection procedure. PROCEDURE
(a) If DTC B15C3 is output, perform the troubleshooting of DTC B15C3 first. Result |
Result | Proceed to | |
DTC B15C3 is not output. |
A | | DTC B15C3 is output. |
B |
| B |
 | GO TO DTC "B15C3" IN DIAGNOSTIC TROUBLE CODE CHART |
|
A |
 | |
| 2. |
CHECK OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING) |
(a) Check that optional components (including associated wiring) which generate radio waves are not installed. Result |
Result | Proceed to | |
Optional components (including associated wiring) are installed. |
A | | Optional components (including associated wiring) are not installed. |
B |
HINT:
- Electrical noise from radio waves generated by optional components or
the wiring for those components may affect AVC-LAN communication.
- This DTC may be stored when an AVC-LAN communication error occurs due to electrical noise.
| B |
| GO TO STEP 4 |
|
A | |
| |
| 3. |
REMOVE OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING) |
(a) Remove optional components (including associated wiring). NOTICE:
Do not remove optional components or associated wiring without the permission of the customer.
|
NEXT | |
| |
(a) Clear the DTCs (See page
 ). (b) Recheck for DTCs and check if the same DTC is output again (See page
). OK: No DTCs are output.
| OK |
| END (COMMUNICATION MALFUNCTION DUE TO NOISE) |
|
NG | |
| |
| 5. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - BATTERY AND BODY GROUND) |
| (a) Disconnect the stereo component amplifier assembly connectors. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
J143-6 (GND) - Body ground |
Always | Below 1 Ω | |
J143-7 (GND2) - Body ground |
Always | Below 1 Ω |
(c) Measure the voltage according to the value(s) in the table below. Standard Voltage: |
Tester Connection | Condition |
Specified Condition | |
J142-1 (+B) - J143-6 (GND) |
Always | 11 to 14 V | |
J142-5 (+B2) - J143-6 (GND) |
Always | 11 to 14 V | |
J141-12 (ACC) - J143-6 (GND) |
Ignition switch ACC | 11 to 14 V | Text in Illustration |
*a | Front view of wire harness connector
(to Stereo Component Amplifier Assembly) |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 6. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY) |
(a) Disconnect the J135 navigation receiver assembly connector. (b) Disconnect the J141 stereo component amplifier assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | | J135-7 (TX1+) - J141-8 (TX+) |
Always | Below 1 Ω | |
J135-8 (TX1-) - J141-7 (TX-) |
Always | Below 1 Ω | |
J135-7 (TX1+) - Body ground |
Always | 10 kΩ or higher | |
J135-8 (TX1-) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 7. |
REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY |
(a) Replace the stereo component amplifier assembly with a known good one (See page
). (b) Clear the DTCs (See page
). (c) Recheck for DTCs and check if the same DTC is output again. (See page
). OK: No DTCs are output. Result |
Result | Proceed to | |
OK | A | |
NG (for Column Shift Type) |
B | | NG (for Floor Shift Type) |
C |
| A |
| END (STEREO COMPONENT AMPLIFIER ASSEMBLY IS DEFECTIVE) |
| B |
| REPLACE NAVIGATION RECEIVER ASSEMBLY |
| C |
| REPLACE NAVIGATION RECEIVER ASSEMBLY | | 
