Test B: Theft Deterrent System Inoperative

WARNING: This page is about a different car, the 2000 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Use this test when UTD system will not arm or disarm properly.

NOTE: Perform UTD system check prior to performing test procedures and after completing any repairs. See UNIVERSAL THEFT DETERRENT SYSTEM CHECK under TROUBLE SHOOTING.

Turn ignition off. Open driver or passenger door. Lock doors using power lock switch. Close doors. System should be armed. If system arms, go to next step. If system does not arm, go to step 5 .
Disarm system, using key to unlock driver or passenger door lock. If system does not disarm, go to next step. If system disarms, go to step 6 .
Disarm system, using UNLOCK button on remote transmitter or by walking into range (with passive switch on). If system does not disarm, go to next step. If system disarms, repair remote keyless entry system as necessary. See REMOTE KEYLESS ENTRY SYSTEMS - CORVETTE article.
Using scan tool, check communications with BCM, LDCM, RDCM and RFA module. If scan tool communicates with all modules, go to step 7 . If scan tool is unable to communicate with module(s), see appropriate article for diagnosis and repair of system in question.
Turn ignition off. Close doors. Press LOCK button on remote transmitter or walk out of range (with passive switch on). If system arms properly, repair remote keyless entry system as necessary. See REMOTE KEYLESS ENTRY SYSTEMS - CORVETTE article. If system does not arm, go to step 4 .
Check the following circuits for intermittent problems: door ajar switches, door lock cylinder switches, power door lock switches, hood ajar switch (export only) and communications between BCM, RDCM, LDCM and PCM. If no problems are found, system is okay. If a problem is found, repair as necessary.
Replace BCM. Program new BCM. See PROGRAMMING .