Initial Inspection and Diagnostic Overview

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







VISUAL INSPECTION CHART

3. If the concern remains after the inspection, connect the NGS Tester to the data link connector located beneath the instrument panel and select the vehicle to be tested from the NGS Tester menu. If the 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.

4. If the NGS Tester still does not communicate with the vehicle, refer to the New Generation STAR Tester Manual.
5. Carry out the DATA LINK DIAGNOSTIC TEST. If the NGS Tester responds with:
^ CKT914, CKT915 or CKT7O =ALL ECUS NO RESP/NOT EQUIP, refer to Module Communications Network (Information Bus).
^ NO RESP/NOT EQUIP for REM, go to Pinpoint Test B. Test B: No Communication With The Rear Electronic Module
^ SYSTEM PASSED, retrieve and record the continuous Diagnostic Trouble Codes (DTCs), erase the continuous DTCs and carry out self-test diagnostics for the FEM.

6. If the DTCs retrieved are related to the concern,
go to FEM DTC Index, Front Electronic Module Diagnostic Trouble Code Index
and Instrument Cluster DTC Index, Instrument Cluster Diagnostic Trouble Code (DTC) Index
or SSP Relay Index to continue diagnostics. Component Tests and General Diagnostics
7. If no DTCs related to the concern are retrieved, proceed to Symptom Chart to continue diagnostics. Symptom Related Diagnostic Procedures