Initial Inspection and Diagnostic Overview

Inspection and Verification

1. Verify the customer concern by operating the electronic door lock control system.

Visual Inspection Chart:

2. Visually inspect the following for obvious signs of mechanical and electrical damage:
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 WDS or equivalent tester to the data link connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the WDS or equivalent tester menu. If WDS or equivalent tester does not communicate with the vehicle:
1. check that the program card is correctly installed.
2. check the connections to the vehicle.
3. check the ignition switch position.

5. If the WDS or equivalent tester still does not communicate with the vehicle, refer to the Tester manual.
6. Carry out the DATA LINK DIAGNOSTICS. If the WDS or equivalent tester responds with:
1. CKT914, CKT915 or CKT70=ALL ECUS NO RESP/NOT EQUIP, see COMMUNICATIONS NETWORK DIAGNOSIS.
2. NO RESP/NOT EQUIP for central security module, see MODULE DOES NOT RESPOND TO THE WDS TESTER - CENTRAL SECURITY MODULE.
3. SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out self-test diagnostics for the central security module.

7. If the DTCs retrieved are related to the concern, go to the central security module Diagnostic Trouble Code (DTC) Index to continue diagnostics. Diagnostic Trouble Code Descriptions
8. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics. Symptom Diagnostic Index