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 and the SJB.
9. If the DTCs retrieved are related to the concern, go to DTC Charts. Instrumentation, Message Center and Warning Chimes
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
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: xxx.x MPH (base cluster) or VEHICLE SPD (message center cluster) may display 45 MPH or VEHICLE SPD 45 MPH. Note that there were 4 x's in the display description but only 2 digits in the actual display.
To enter the IC dealer test mode with the engine off, press and hold the odometer reset button (base cluster) or the message center RESET button (message center cluster). Turn the ignition switch to the RUN position and hold until the display indicates ENGINEERING TEST MODE usually within 5-6 seconds. Press the reset button once to advance to each stage of the self-test.
To exit the IC dealer test mode, press and hold the odometer reset button (base cluster) or the message center RESET button (message center cluster) for approximately 5-8 seconds or turn the ignition to the OFF position.
IC Dealer Test Mode
