Test 5A - Bus Short To 5 Volts
NOTE:
Perform TEST VER-1A
after each repair.
CAUTION:
Always turn ignition off prior to disconnecting any module connector.
- Turn ignition off. Disconnect Powertrain Control Module (PCM). PCM is located at right corner of firewall. Turn ignition on. If scan tool does not display BUS SHORT TO 5 VOLTS, go to TEST 5B . If scan tool displays BUS SHORT TO 5 VOLTS, go to next step.
- Turn ignition off. Disconnect instrument cluster. Turn ignition on. If scan tool does not display BUS SHORT TO 5 VOLTS, replace instrument cluster circuit board. If scan tool displays BUS SHORT TO 5 VOLTS, go to next step.
- Turn ignition off and wait 5 minutes. Disconnect Air Bag System Control Module (ABSCM). is located under center console. Turn ignition on. If scan tool does not display BUS SHORT TO 5 VOLTS, replace ABSCM. If scan tool displays BUS SHORT TO 5 VOLTS, go to next step.
- Disconnect scan tool from DLC. Using external voltmeter, measure voltage between ground and terminal No. 3 (Violet/Brown wire) on DLC connector. If voltage is more than 4 volts, repair Violet/Brown wire for short to voltage. If voltage is 4 volts or less, go to next step.
- Measure voltage between ground and terminal No. 11 (White/Black wire) on DLC connector. If voltage is more than 4 volts, repair White/Black wire for short to voltage. If voltage is less than 4 volts, replace scan tool cable or scan tool as necessary.