Radio Receiver Communication Error

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

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. IDENTIFY COMPONENT SHOWN BY SUB-CODE

(a) Enter the diagnostic mode.





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

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

HINT
* "190 (radio receiver assembly)" is the component shown by the sub-code in the example shown in the illustration.
* For details of the DTC display, refer to 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 which has stored this code.

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

Component Table





*: w/ Satellite Radio

B -- REPLACE RADIO RECEIVER ASSEMBLY Removal
A -- 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.

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

Component Table





*1: for 9 Speakers

*2: w/ USB Audio System

NEXT -- Continue to next step.

4. INSPECT RADIO RECEIVER ASSEMBLY

(a) Disconnect the G21*1 and G8*2 radio receiver assembly connectors.





*1: for 9 Speakers

*2: w/ USB Audio System

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

Standard Resistance:





*1: for 9 Speakers

*2: w/ USB Audio System

Text in Illustration





NG -- REPLACE RADIO RECEIVER ASSEMBLY Removal
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 Terminals of ECU Pinout Values and Diagnostic Parameters.

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

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

(2) Check for an open or short in the AVC-LAN circuit between the radio receiver assembly 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 Removal

OK -- END