Pinpoint Test C: DTC B1555 - No Power In Run

WARNING: This page is about a different car, the 2007 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.

C1 CHECK THE IGNITION SWITCH
- Carry out the Ignition Switch Component Test. Refer to Component Tests .
- Is the ignition switch OK ?
1. YES : Go to C2.
2. NO : INSTALL a new ignition switch. REFER to Ignition Switch . CLEAR the DTCs. TEST the system for normal operation.
C2 CHECK THE VOLTAGE SUPPLY TO THE SJB
- Disconnect: SJB C2280b
- Disconnect: SJB C2280c
- Connect: Ignition Switch C250
- Key in ON position.
- Measure the voltage between ground and:
  - SJB C2280b-17, circuit CDC32 (BN/YE), harness side.
  - SJB C2280b-29, circuit CDC34 (WH/OG), harness side.
  - SJB C2280c-32, circuit CDC33 (VT/GN), harness side.
- Are the voltages greater than 10 volts?
1. YES : Go to C3.
2. NO : REPAIR the affected circuit(s). CLEAR the DTCs. TEST the system for normal operation.
C3 CHECK FOR CORRECT SJB OPERATION
- Key in OFF position.
- Disconnect all the SJB connectors.
- Check for:
  - corrosion.
  - pushed-out pins.
  - spread terminals.
- Connect all the SJB connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
1. YES : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation.
2. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. TEST the system for normal operation.