Radio Receiver Communication Error

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

INSPECTION PROCEDURE

PROCEDURE

1. IDENTIFY THE COMPONENT SHOWN BY THE SUB-CODE

(a) Enter the diagnostic mode.





(b) Press the preset switch "2" to change to "Detailed Information Mode".

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

HINT
* "190 (radio receiver)" is the component shown by the sub-code in the example shown in the illustration.
* For details of the DTC display, refer to the "DTC CHECK/CLEAR" Reading and Clearing Diagnostic Trouble Codes.

NEXT -- Continue to next step.

2. CHECK COMPONENT SHOWN BY SUB-CODE

(a) Select the component shown by sub-code.

HINT
The "Bluetooth" handsfree module is built into the radio receiver. If there is a problem between the "Bluetooth" handsfree module and radio receiver, replace the radio receiver.

Component Table:





A -- REPLACE RADIO RECEIVER ASSEMBLY
B -- Continue to next step.

3. 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.

4. INSPECT RADIO RECEIVER ASSEMBLY

(a) Disconnect the E62 receiver connector.





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

Standard Resistance:





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

5. 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 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 radio receiver and the component shown by the sub-code.

(1) 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.

6. 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 RADIO RECEIVER ASSEMBLY

OK -- END