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Test 153B - Repairing VTSS Disarm Circuit

NOTE: Perform TEST 153A  before proceeding with this test. For connector terminal ID, see CONNECTOR IDENTIFICATION  . For wiring schematics, see WIRING DIAGRAMS  in this article. Perform TEST VER-3A - VERIFICATION PROCEDURE  after each repair.
CAUTION: Always turn ignition off prior to disconnecting any module connector.
  1. Disconnect left front door key cylinder switch connector. Using scan tool, read disarm signal voltage. If scan tool displays VBATT or 12 volts, replace left front key cylinder switch. If scan tool does not display VBATT or 12 volts, go to next step.
  2. Disconnect right front door key cylinder switch connector. Ensure connector is clean and undamaged. Using scan tool, read disarm signal voltage. If scan tool displays VBATT or 12 volts, replace right front door key cylinder switch. If scan tool does not display VBATT or 12 volts, go to next step.
  3. Disconnect Body Control Module (BCM) connector. BCM is located behind right kick panel. Ensure connector is clean and undamaged. Using scan tool in ohmmeter mode, measure resistance at terminal No. 3 (Light Green/Orange wire) on BCM Black connector. If resistance is less than 5 ohms, repair short to ground in Light Green/Orange wire. If resistance is more than 5 ohms, replace BCM.
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