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 (Data Link Connector) are provided to the VCM (Vehicle Communication Module).
If the scan tool does not communicate with the VCM (Vehicle Communication Module) :
- Check the VCM (Vehicle Communication Module) connection to the vehicle.
- Check the scan tool connection to the VCM (Vehicle Communication Module).
- Refer to - 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.
- 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 IPC (Instrument Panel Cluster), SJB (Smart Junction Box), PCM, ABS module and Restraints Control Module (RCM).
9. If the DTCs retrieved are related to the concern, go to DTC Charts. Instrument Panel, Gauges and Warning Indicators For all other DTCs, refer to the Diagnostic Trouble Code (DTC) Chart in Body Control Systems. Body Control Systems
10. If no DTCs related to the concern are retrieved, GO to Symptom Chart- Instrument Panel Cluster (IPC), Instrument Cluster and Panel Illumination GO to Symptom Chart- Information And Message Center, or GO to Symptom Chart- Warning Chimes. Instrumentation, Message Center and Warning Chimes
Instrument Panel Cluster (IPC) Dealer Test Mode
To enter the IPC (Instrument Panel Cluster) self-diagnostic mode, begin with the ignition key in the OFF position. Press and hold the SELECT/RESET button. Turn the key to the RUN position and hold the SELECT/RESET button until the display indicates ENGINEERING TEST MODE, usually within 3 to 5 seconds. Press the SELECT/RESET button once to advance through each stage of the self-test. To exit the IPC (Instrument Panel Cluster) self-test mode, turn the ignition to the OFF position.
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.
