Initial Inspection and Diagnostic Overview

1. Verify the customer concern by operating the system.
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. If the concern remains after the inspection connect the New Generation STAR (NGS) Tester to the data link connector located beneath the instrument panel and select the vehicle to be tested from NGS Tester menu. If NGS Tester 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.

5. If the NGS Tester still does not communicate with the vehicle, refer to the New Generation STAR (NGS) Tester.
6. Carry out the DATA LINK DIAGNOSTICS test. If the NGS Tester responds with:
^ CKT 914, CKT 915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to Module Communications Network (Information Bus).
^ NO RESP/NOT EQUIP for DSM, go to Pinpoint Test A. Test A: No Communication With the Driver Seat Module
^ NO RESP/NOT EQUIP for DDM, go to Pinpoint Test B. Test B: No Communication With the Driver Door Module
^ System passed, retrieve and record the continuous Diagnostic Trouble Codes (DTCs), erase the continuous DTCs and carry out self test diagnostics for the DSM and the DDM.

7. If the DSM DTCs retrieved are related to the concern, go to the DSM DTC Index. Driver Seat Module (DSM) Diagnostic Trouble Code (DTC) Index
8. If the DDM DTCs retrieved are related to the concern, go to the DDM DTC Index. Driver Door Module (DDM) Diagnostic Trouble Code (DTC) Index
9. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue the diagnostics. Symptom Related Diagnostic Procedures