Inspection and Verification

INSPECTION AND VERIFICATION

1. Verify the customer concern.

Visual Inspection Chart:

2. Visually inspect for obvious signs of mechanical or electrical damage.
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
4. If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
- check that the program card is correctly installed.
- check the connections to the vehicle.
- check the ignition switch position.

5. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
6. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
- CAN circuit fault; all electronic control units no response/not equipped, refer to Information Bus (Module Communications Network).
- No response/not equipped for the audio unit, GO to Pinpoint Test A. Test A: No Communication With the Audio Unit
- No response/not equipped for the DVD player, GO to Pinpoint Test B. Test B: No Communication With the Digital Versatile Disc (DVD) Player
- No response/not equipped for the satellite radio receiver, GO to Pinpoint Test C. Test C: No Communication With the Satellite Radio Receiver

- NOTE: Do not press any buttons on the audio unit while the audio unit is carrying out the self-test.

System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out the self-test diagnostics for the audio unit.

7. If the DTCs retrieved are related to the concern, go to the Audio Unit Diagnostic Trouble Code (DTC) Index, the Digital Versatile Disc (DVD) Player Diagnostic Trouble Code (DTC) Index, or the Satellite Radio Receiver Diagnostic Trouble Code (DTC) Index. Audio Unit Diagnostic Trouble Code (DTC) Index Digital Versatile Disc (DVD) Player Diagnostic Trouble Code (DTC) Index Satellite Radio Receiver Diagnostic Trouble Code (DTC) Index
8. If no DTCs related to the concern are retrieved, and the concern is not visually evident, proceed to the Speaker Walk-Around Test, Audio Unit Self-Diagnostic Mode, and the Satellite Audio Bezel Diagnostic Test (if necessary). Speaker Walk-Around Test Audio Unit Self-Diagnostic Mode