Integration Control and Panel Assembly Communication Error

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Integration Control and Panel Assembly 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 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 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





NEXT -- Continue to next step.

3. INSPECT RADIO RECEIVER
(a) Disconnect the radio receiver connectors.




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






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

4. CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL & PANEL - 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 AVC-LAN Wiring Diagram below, check the AVC-LAN circuit between the integration control & panel assembly and the component shown by the sub-code.
(1) Disconnect all connectors between the integration control & panel assembly and the component shown by sub-code.
(2) Check for an open or short in the AVC-LAN circuit between the integration control & panel assembly and the component shown by the sub-code.
OK:
There are no open or short circuits.





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 INTEGRATION CONTROL & PANEL ASSEMBLY
OK -- END