Stereo Component Amplifier Communication Error

INSPECTION PROCEDURE

1 IDENTIFY THE COMPONENT SHOWN BY THE SUB-CODE

1. 1
   Enter the diagnostic mode.

   

2. 2
   Press the preset switch "3" to change to "Detailed Information Mode".
3. 3
   Identify the component shown by the sub-code.

HINT:

• "190 (radio receiver)" is the component shown by the subcode in the example shown in the illustration.
• For details of the DTC display, refer to "DTC CHECK/ CLEAR"

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

1. Inspect the power source circuit of the component shown by the sub-code.

Component Table:

3 INSPECT RADIO RECEIVER

1. 1
   Disconnect the radio receiver connectors.
2. 2
   Measure the resistance according to the value(s) in the table below.

Standard resistance

*1: 10 Speaker System

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 the "TERMINALS OF ECU".

1. 1
   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.
2. 2
   Disconnect all connectors between the stereo component amplifier and the component shown by sub-code.
3. 3
   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.

5 REPLACE COMPONENT SHOWN BY SUB-CODE

1. 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

END