Stereo Component Amplifier Communication Error

AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM: Stereo Component Amplifier Communication Error

Stereo Component Amplifier Communication Error

INSPECTION PROCEDURE

PROCEDURE

1. IDENTIFY COMPONENT SHOWN BY SUB-CODE




(a) Enter the diagnostic mode.
(b) Press the "LAN Mon" switch to change to "LAN Monitor" mode.
(c) Identify the component which has stored this 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 details of the DTC display, 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 RADIO RECEIVER




(a) for 9 Speaker System:
Disconnect the R5 and R6 receiver connectors.
(b) for 6 Speaker System:
Disconnect the R5 receiver connector.
(c) Measure the resistance of the receiver.
Standard resistance:





HINT:
- *1: for 6 speaker system
- *2: for 9 speaker system

NG -- REPLACE RADIO RECEIVER
OK -- Continue to next step.

4. CHECK WIRE HARNESS (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 the "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 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 is no open or short circuit.





NG -- REPAIR OR REPLACE HARNESS AND 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
OK -- END