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 New Generation STAR (NGS) Tester to the data link connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the NGS menu. If the NGS 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 NGS tester does not power up, refer to the NGS Tester manual.
5. Carry out the DATA LINK DIAGNOSTICS test. If the NGS 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 Module (ICM), 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 ICM 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 ICM are related to the concern,
go to the Instrument Cluster DTC Index to continue diagnostics. Trouble Code Descriptions - Warning Devices
7. If no DTCs related to the concern are retrieved, proceed to Symptom Chart to continue diagnostics. Diagnosis By Symptom - Warning Devices