Inspection and Verification
- Verify the customer concern.
- Visually inspect for obvious signs of electrical damage.VISUAL INSPECTION CHART
Electrical - Central Junction Box (CJB) fuse 18 (10A)
- Wiring, terminals or connectors
- Cruise control switch(es)
- Clutch pedal cruise control deactivator switch (manual transaxle)
- Cruise control deactivator switch
- Stoplamp switch
- Instrument Panel Cluster (IPC)
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).
- 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 MODULE COMMUNICATIONS NETWORK , No Power To The Scan Tool, to diagnose no power to the scan tool.
- 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 MODULE COMMUNICATIONS NETWORK to diagnose no response from the PCM.
- Carry out the network test.
- If the scan tool responds with no communication for one or more modules, refer to MODULE COMMUNICATIONS NETWORK .
- If the network test passes, retrieve and record the continuous memory DTCs.
- Clear the continuous DTCs and carry out the self-test diagnostics for the PCM and IPC.
- If the DTCs retrieved are related to the concern, go to DTC Charts . For all other DTCs, refer to the Diagnostic Trouble Code (DTC) Chart in MULTIFUNCTION ELECTRONIC MODULES .
- If no DTCs related to the concern are retrieved, GO to Symptom Chart .
NOTE:
Make sure to use the latest scan tool software release.
NOTE:
The Vehicle Communication Module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM.