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 preceding 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:
- SCP, ISO, or CAN circuits fault; all electronic control units no response/not equipped, refer to Information Bus (Module Communications Network).
- No response/not equipped for the navigation module, GO to Pinpoint Test A. Test A: No Communication With The Navigation Module
- System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), clear the continuous DTCs, and carry out self-test diagnostics for the navigation module.

7. If the DTCs retrieved are related to the concern, go to the Navigation Module Diagnostic Trouble Code (DTC) Index. Diagnostic Trouble Code Tests and Associated Procedures
8. If no DTCs related to the concern are retrieved, carry out the self-diagnostics and GO to Symptom Chart. Symptom Related Diagnostic Procedures

Self-Diagnostics
Although on the SCP network, the navigation system provides internal diagnostics to assist with diagnosing vehicle concerns.







Press and hold the AUDIO and MENU buttons for 5 seconds.







Press 917 Enter.







- SELF CHECK provides internal self-test diagnostics. These DTCs are also accessible through the SCP network utilizing a diagnostic tool.
- NAVIGATION INFO provides access to the speed signal, gyro, reverse input, and GPS information.
- SUB-SYSTEM INFO provides the various component configurations.
- MANUAL CHECK provides access to several diagnostics input tests:
- Voice Output verifies the audio signals from the navigation module and audio unit.
- Hard Switch Test checks the various switches.
- Microphone Test checks the strength of the voice signal.