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, PCM, Restraints Control Module (RCM), ABS module 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. Symptom Chart - Instrument Cluster (IC) Symptom Chart - Information and Message Center Symptom Chart - Warning Chimes
Instrument Cluster (IC) Dealer Test Mode
NOTE: If the message center detects a non-resettable fault condition that it is reporting out on such as door ajar, the dealer test mode session cannot be entered until the fault condition has been corrected and the message removed. If the dealer test mode session is interrupted by a resettable fault condition display, the session can be resumed by pressing the RESET button.
To enter the IC dealer test mode, press and hold the SELECT/RESET button (base IC) or the message center RESET button (message center IC). Turn the ignition switch to the RUN position and continue to hold the SELECT/RESET button or RESET button until the display indicates ENGINEERING TEST MODE, usually within 3 to 5 seconds. Press the SELECT/RESET button or RESET button once to advance through each stage of the self-test.
To exit the IC dealer test mode, press and hold the SELECT/RESET button or the RESET button for more than 3 seconds or simply turn the ignition switch to the OFF position.
Instrument Cluster (IC) Dealer Test Mode
NOTE: Some of 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: VEHICLE SPEED xxxx.x MPH may display VEHICLE SPEED 25 MPH. Note that there were 4 x's in the display description but only 2 digits in the actual display.
