Pinpoint Test C: No Power In Run
WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. 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 CIRCUIT CDC33 (VT/GN) FOR AN OPEN NOTE: To access the SJB connector, the floor console must be removed.
- Key in OFF position.
- Disconnect: SJB C2280a
- Disconnect: Ignition Switch C250
- Measure the resistance between ignition switch C250-6, circuit CDC33 (VT/GN), harness side and SJB C2280a-3 circuit CDC33 (VT/GN), harness side.
- Is the resistance less than 5 ohms?
- YES : Go to C2.
- NO : REPAIR circuit CDC33 (VT/GN). TEST the system for normal operation.
- C2 CHECK CIRCUIT CDC33 (VT/GN) FOR A SHORT TO GROUND
- Measure the resistance between ignition switch C250-6, circuit CDC33 (VT/GN), harness side and ground.
- Is the resistance greater than 10,000 ohms?
Courtesy of FORD MOTOR CO.
- YES : Go to C3.
- NO : REPAIR circuit CDC33 (VT/GN). TEST the system for normal operation.
- C3 CHECK CIRCUIT CDC34 (WH/OG) FOR AN OPEN NOTE: To access the SJB connector, the floor console must be removed.
- Disconnect: SJB C2280b
- Disconnect: SJB C2280e
- Disconnect: BJB Fuse 35
- Measure the resistance between:
- ignition switch C250-1, circuit CDC34 (WH/OG), harness side and SJB C2280b-45 circuit CDC34 (WH/OG), harness side.
- ignition switch C250-1, circuit CDC34 (WH/OG), harness side and SJB C2280e-1 circuit CDC34 (WH/OG), harness side.
- ignition switch C250-1, circuit CDC34 (WH/OG), harness side and BJB fuse 35 input side.
- Is the resistance less than 5 ohms?
- YES : Go to C4.
- NO : REPAIR circuit CDC34 (WH/OG). TEST the system for normal operation.
- C4 CHECK CIRCUIT CDC34 (WH/OG) FOR A SHORT TO GROUND
- Measure the resistance between ignition switch C250-1, circuit CDC34 (WH/OG), harness side and ground.
- Is the resistance greater than 10,000 ohms?
- YES : Go to C5.
- NO : REPAIR circuit CDC34 (WH/OG). TEST the system for normal operation.
- C5 CHECK THE IGNITION SWITCH
- Carry out the Ignition Switch - Electrical Component Test. Refer to appropriate COMPONENT TESTING article.
- Is the ignition switch OK?
- YES : Go to C6.
- NO : INSTALL a new ignition switch. REFER to Ignition Switch . TEST the system for normal operation.
- C6 CHECK FOR CORRECT SJB OPERATION
- Check SJB connectors C2280a, C2280b and C2280e for:
- corrosion.
- pushed-out pins.
- spread terminals.
- Connect: SJB C2280a
- Connect: SJB C2280b
- Connect: SJB C2280e
- Make sure the connectors are seated correctly, then operate the system and verify the concern is still present.
- Is the concern still present?
- YES : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES article. TEST the system for normal operation.
- NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. TEST the system for normal operation.
- Check SJB connectors C2280a, C2280b and C2280e for: