Inspection and Verification

Instrumentation, Message Center and Warning Chimes

Inspection and Verification

1. Verify the customer concern.

2. Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart:

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. NOTE: Make sure to use the latest scan tool software release.

If the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).

5. NOTE: The Vehicle Communication Module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM.

If the scan tool does not communicate with the VCM:

- Check the VCM connection to the vehicle.

- Check the scan tool connection to the VCM.

- Refer to Information Bus, No Power To The Scan Tool, to diagnose no power to the scan tool.

6. If the scan tool does not communicate with the vehicle:
- Verify the ignition key is in the ON position.

- Verify the scan tool operation with a known good vehicle.

- Refer to Information Bus to diagnose no response from the PCM.

7. Carry out the network test.
- If the scan tool responds with no communication for one or more modules, refer to Information Bus.

- If the network test passes, retrieve and record the continuous memory DTCs.

8. Clear the continuous DTCs and carry out the self-test diagnostics for the IC, SJB, PCM, ABS module and Restraints Control Module (RCM).

9. If the DTCs retrieved are related to the concern, go to DTC Charts Instrumentation, Message Center and Warning Chimes. For all other DTCs, refer to the Diagnostic Trouble Code (DTC) Chart in Body Control Systems. Diagnostic Trouble Code (DTC) Chart

10. If no DTCs related to the concern are retrieved, GO to Symptom Chart - Instrument Cluster (IC), GO to Symptom Chart - Information And Message Center or GO to Symptom Chart - Warning Chimes. Instrumentation, Message Center and Warning Chimes

Instrument Cluster (IC) Dealer Test Mode

To enter the IC self-diagnostic mode, begin with the ignition key in the OFF position. Press and hold the message center RESET button. Turn the key to the RUN position and hold until the display indicates ENGINEERING TEST MODE, usually within 3 to 5 seconds. Press the RESET button once to advance through each stage of the self-test. To exit the IC self-test mode, turn the ignition to the OFF position.

NOTE: The displays listed in the table below use xxx's to represent a numeric or alpha-numeric value. The value may display the same amount of characters represented by the xxx's or there may be more/less depending on the type of display. For example: DTCS xxxx xxxx xxxx may display DTC C0100. Note that there were 12 x's in the display description but only 4 digits in the actual display.