Pinpoint Test B : No Power In Acc - Conventional Ignition Switch
- B1 CHECK FOR ACC VOLTAGE AT THE BCM (BODY CONTROL MODULE)
- Ignition OFF.
- Disconnect: BCM C2280C .
- Ignition ACC.
- Measure:
Positive Lead Measurement / Action Negative Lead C2280C-44 Ground
Is the voltage greater than 11 volts?
Yes GO to B3 No GO to B2 - B2 CHECK THE IGNITION ACC CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Ignition Switch C250 .
Is the resistance less than 3 ohms?
Yes INSTALL a new ignition switch.REFER to: Ignition Switch . No REPAIR the circuit. - B3 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
- Disconnect and inspect all BCM connectors.
- Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary
- Reconnect the BCM connectors. Make sure they seat and latch correctly.
- Operate the system and determine if the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCMREFER to: Body Control Module (BCM) . No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.