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 diagnostic tool tester does not power up, refer to the diagnostic tool manual.
5. Carry out the DATA LINK DIAGNOSTICS. 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 FEM, go to Pinpoint Test A. Test A: No Communication With the Front Electronic Module
^ NO RESP/NOT EQUIP for REM, go to Pinpoint Test B. Test B: No Communication With the Rear Electronic Module
^ NO RESP/NOT EQUIP for DDM, go to Pinpoint Test C. Test C: 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 FEM, REM and DDM.
6. If the DTCs retrieved are related to the concern, go to the FEM Diagnostic Trouble Code (DTC) Index, FEM Diagnostic Trouble Code (DTC) Index
REM. Diagnostic Trouble Code (DTC) Index, REM Diagnostic Trouble Code (DTC) Index
or DDM Diagnostic Trouble Code (DTC) Index. Driver Door Module (DDM) Diagnostic Trouble Code (DTC) Index
7. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue the diagnostics. Symptom Related Diagnostic Procedures