Pinpoint Test A: No Power in All Ignition Switch Positions - Vehicles with a Conventional Ignition Switch

WARNING: This page is about a different car, the 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

A1 CHECK THE IGNITION SWITCH
- Ignition OFF.
- Disconnect: Ignition Switch.
- Carry out the IGNITION SWITCH COMPONENT TEST.
  Refer to OEM WIRING DIAGRAMS COMPONENT TESTING for component testing procedures.
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. See OEM FUSE AND RELAY INFORMATION . If OK, GO to A3 . If not OK, REFER to the appropriate OEM WIRING DIAGRAMS to identify the possible causes of the circuit short.

A3 CHECK FOR POWER TO BCM FUSE 28 (15A)

Measure:

Positive Lead	Measurement/Action	Negative Lead
Fuse 28 (15A) Input Cavity		Ground

Is the voltage greater than 11 volts?

Yes : REPAIR circuit SBP28 (GN/RD).
No : VERIFY High Current BJB Fuse B (100A) is OK. See OEM FUSE AND RELAY INFORMATION . If OK, REPAIR the BCM voltage supply circuit. If not OK, REFER to the appropriate OEM WIRING DIAGRAMS to identify the possible causes 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 BODY CONTROL MODULE (BCM) - WITH INTELLIGENT ACCESS or REFER to BODY CONTROL MODULE (BCM) - WITHOUT INTELLIGENT ACCESS .
- 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.