Radio Receiver Communication Error

AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: Radio Receiver Communication Error
- Radio Receiver Communication Error

INSPECTION PROCEDURE

PROCEDURE

1. IDENTIFY THE COMPONENT SHOWN BY SUB-CODE

(a) Enter the diagnostic mode.





(b) Press the preset switch "3" to change the mode to "Detailed Information Mode".

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

HINT
* "P190" set by the radio receiver is shown in the preceding illustration as an example.
* For details of the DTC display, refer to DTC Check/Clear Reading and Clearing Diagnostic Trouble Codes.

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

Component Table:

NEXT -- Continue to next step.

3. INSPECT RADIO RECEIVER

(a) Disconnect the radio receiver connector.





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

Standard Resistance:





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

4. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - 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 following AVC-LAN Wiring Diagram, check the AVC-LAN circuit between the radio receiver and the component shown by the sub-code.

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

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

OK:

There is no open or short circuit.





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 known good one and check if the same problem occurs again.

OK:

Same problem does not occur.

NG -- REPLACE RADIO RECEIVER Removal

OK -- END