Initial Inspection - Warning Devices

1. Verify the customer concern by operating the system.
2. Visually inspect for obvious signs of mechanical and electrical damage.

Visual Inspection Chart:

3. If the concern remains after the inspection, connect the diagnostic tool to the Data Link Connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
^ check that the program card is correctly installed.
^ check the connections to the vehicle.
^ check the ignition switch position.
4. If the diagnostic tool does not power up, refer to the diagnostic tool manual.
5. Carry out the DATA LINK DIAGNOSTICS TEST. Pinpoint Test PC (Precheck)
If the diagnostic tool responds with:
^ CKT914, CKT915 or CKT70 ALL ECUS NO RESP/NOT EQUIP, refer to Module Communications Network (Information Bus).
^ NO RESP/NOT EQUIP for Instrument Cluster (IC), go to Pinpoint Test A. Test A: No Communication With the Instrument Cluster
^ NO RESP/NOT EQUIP for Restraint Control Module (RCM), refer to Air Bag Systems.
^ SYSTEM PASSED, retrieve and record the continuous Diagnostic Trouble Codes (DTCs), erase the continuous DTCs and carry out self-test diagnostics for the IC and RCM.
6. If the DTCs retrieved from the RCM are related to the concern, refer to Air Bag Systems. If the DTCs retrieved from the IC are related to the concern, go to the Instrument Cluster Diagnostic Trouble Code (DTC) Index to continue diagnostics. Trouble Code Descriptions - Warning Devices
7. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics. Diagnosis By Symptom - Warning Devices