Stereo Component Amplifier Communication Error

NAVIGATION: NAVIGATION SYSTEM: Stereo Component Amplifier Communication Error
- Stereo Component Amplifier Communication Error

INSPECTION PROCEDURE

PROCEDURE

1. IDENTIFY THE COMPONENT SHOWN BY SUB-CODE

(a) Enter the diagnostic mode.





(b) Press the "LAN Mon" switch to change the mode to "LAN Monitor" mode.

(c) Identify the component shown by the sub-code.

HINT
* "110 (multi-display)" is the component shown by the sub-code in the example shown in the illustration.
* The sub-code will be indicated by its physical address.
* For the component list, refer to "DIAGNOSIS DISPLAY DETAILED DESCRIPTION" Diagnosis Display Detailed Description.

NEXT -- Continue to next step.

2. CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE

(a) Inspect the power source circuit of the component shown by the sub-code.

If the power source circuit is operating normally, proceed to the next step.

Component Table:





NEXT -- Continue to next step.

3. INSPECT NAVIGATION RECEIVER ASSEMBLY

(a) Disconnect the navigation receiver assembly connectors.





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

Standard resistance:





NG -- REPLACE NAVIGATION RECEIVER ASSEMBLY Removal
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - COMPONENT SHOWN BY SUB-CODE)

HINT
* Start the check from the circuit that is near the component shown by the sub-code first.
* For details of the connectors, refer to "TERMINALS OF ECU" Pinout Values and Diagnostic Parameters.

(a) Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the stereo component amplifier and the component shown by the sub-code.

(1) Disconnect all connectors between the stereo component amplifier and the component shown by the sub-code.

(2) Check for an open or short in the AVC-LAN circuit between the stereo component amplifier and the component shown by the sub-code.





OK:

There are no open or short circuits.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. REPLACE COMPONENT SHOWN BY SUB-CODE

(a) Replace the component shown by the sub-code with a normal one and check if the same problem occurs again.

OK:

Same problem does not occur.

NG -- REPLACE STEREO COMPONENT AMPLIFIER Removal

OK -- END