All Locks Inoperative From Driver Door Module

Possible Causes are:

• DDM BUS COMMUNICATION CHECK
• DDM LOCKS INOPERATIVE

1. Using the DRBIII(R), select BODY, DOOR MODULES. Does the DRBIII(R) display Part No. and Version No. of the Driver Door Module? If yes, go to next step. If no, diagnose communication problem. See BUS +/- SIGNALS OPEN OR NO RESPONSE FROM DRIVER DOOR MODULE  under COMMUNICATIONS. Perform BODY VERIFICATION TEST VER 1  under VERIFICATION TESTS.
2. If there are no possible causes remaining, replace the Driver Door Module. Perform BODY VERIFICATION TEST VER 1  under VERIFICATION TESTS.