PINPOINT TEST A : No Power in All Ignition Switch Positions - Vehicles with a Conventional Ignition Switch
- A1 CHECK THE IGNITION SWITCH
- Ignition OFF.
- Disconnect: Ignition Switch.
- Carry out the Ignition Switch Component Test. Refer to Component Testing for component testing.
Is the ignition switch OK?
Yes GO to A2. No INSTALL a new ignition switch. REFER to Ignition Switch . - A2 CHECK FOR POWER TO THE IGNITION SWITCH
- Measure:
Positive Lead Measurement / Action Negative Lead C250-4 Ground
Is the voltage greater than 11 volts?
Yes GO to A4. No VERIFY BCM fuse 28 (15A) is OK. If OK, GO to A3. If not OK, REFER to the OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION to identify the possible cause of the circuit short. - Measure:
- A3 CHECK FOR POWER TO BCM FUSE 28 (15A)
Is the voltage greater than 11 volts?
Yes REPAIR circuit SBP28 (GN/RD). No VERIFY High Current BJB Fuse B (100A) is OK. If OK, REPAIR the BCM voltage supply circuit. If not OK, REFER to the OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION to identify the possible cause of the circuit short. - A4 CHECK FOR CORRECT BCM 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 and all previously disconnected exterior system 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 TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new BCM. REFER to Multifunction Electronic Modules or REFER to Multifunction Electronic Modules . 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.
