VTSS Test 2A- VTSS Module No Response
NOTE:
Perform VTSS TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see CONNECTOR IDENTIFICATION section in this article. Perform VERIFICATION TEST VER-1A after each repair.
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
- Open trunk and inspect area around trunk cylinder. If key cylinder is equipped with a trunk cylinder knock out switch, go to next step. If key cylinder is not equipped with a trunk cylinder knock out switch, system is not equipped with VTSS.
- Turn ignition on. Using scan tool, select SENSORS. Read ignition off/run voltage. If scan tool displays voltage more than 11 volts, go to next step. If scan tool displays 11 volts or less, go to VTSS TEST 3A.
- Access BODY Control Module (BCM) 22-pin connector. See Figure in CHIME TEST 3A. DO NOT disconnect connector. Connect jumper wire between 22-pin connector terminal No. 9 (Violet/Yellow wire) and chassis ground. Go to next step.
- Using scan tool, select BODY, then BODY COMPUTER. Select MISCELLANEOUS, then ENABLE THE VTSS. If system does not enable, replace BCM. If system does enable, remove jumper wire. Repair open trunk cylinder switch circuit (Violet/Yellow wire).