Initial Inspection - Warning Devices

1. Verify the customer concern.







2. Visually inspect for obvious signs of mechanical and electrical damage.
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 still does not communicate with the vehicle, refer to the diagnostic tool manual.
5. Carry Out the DATA LINK DIAGNOSTIC TEST. 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 GEM/CTM, go to Pinpoint Test A. Test A: No Communication W/GEM or CTM
^ NO RESP/NOT EQUIP for 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 RCM, refer to Air Bag Systems, GEM or CTM.
6. If the DTCs retrieved are related to the concern, go to GEM/CTM Module 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