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Test 10A - Bus Short To Battery

NOTE: For connector terminal ID, see CONNECTOR IDENTIFICATION  and WIRING DIAGRAMS  . Perform TEST VER-2A - VERIFICATION PROCEDURE  after each repair.
CAUTION: Always turn ignition off prior to disconnecting any module connector.
  1. Turn ignition off. Disconnect Transmission Control Module (TCM), if equipped. TCM is located next to washer fluid reservoir. Turn ignition on. If scan tool does not display BUS SHORT TO BATTERY, replace TCM. If scan tool displays BUS SHORT TO BATTERY, go to next step.
  2. Turn ignition off and disconnect Powertrain Control Module (PCM). PCM is located next power distribution center. Turn ignition on. If scan tool does not display BUS SHORT TO BATTERY, go to TEST 10B  . If scan tool displays BUS SHORT TO BATTERY, go to next step.
  3. Turn ignition off and disconnect CCD radio 2-pin connector. Turn ignition on. If scan tool does not display BUS SHORT TO BATTERY, isolate CCD radio 2-pin connector and tape to harness. If scan tool displays BUS SHORT TO BATTERY, go to next step.
  4. Turn ignition off. Disconnect compass/mini-trip module. Turn ignition on. If scan tool does not display BUS SHORT TO BATTERY, go to TEST 10D  . If scan tool displays BUS SHORT TO BATTERY, go to next step.
  5. Turn ignition off. Disconnect anti-lock brake controller. Turn ignition on. If scan tool does not display BUS SHORT TO BATTERY, replace anti-lock brake controller. If scan tool displays BUS SHORT TO BATTERY, go to next step.
  6. Turn ignition off. Disconnect instrument cluster. Turn ignition on. If scan tool does not display BUS SHORT TO BATTERY, go to TEST 10E  . If scan tool displays BUS SHORT TO BATTERY, go to next step.
  7. Turn ignition off. Disconnect Body Control Module (BCM) connectors. BCM is located on back of junction block. Junction block is located under left side of instrument panel. Turn ignition on. If scan tool does not display BUS SHORT TO BATTERY, go to TEST 10C  . If scan tool displays BUS SHORT TO BATTERY, go to next step.
  8. Turn ignition off and wait 5 minutes. Disconnect Air Bag Control Module (ABCM) 13-pin connector. ABCM is located under center of instrument panel. Turn ignition on. If scan tool does not display BUS SHORT TO BATTERY, replace ABCM. If scan tool displays BUS SHORT TO BATTERY, go to next step.
  9. Turn ignition off. Using scan tool in voltmeter mode, measure voltage on BCM Connector "A", terminal No. 3 (Violet/Brown wire). If voltage is more than 8 volts, repair Violet/Brown wire for short to voltage. If voltage is 8 volts or less, go to next step.
  10. Measure voltage on terminal No. 34 (White/Black wire). If voltage is more than 8 volts, repair White/Black wire for short to voltage. If voltage is less than 8 volts, replace scan tool cable or scan tool as necessary.
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