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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 1279 (Steering Column Switches) >> Diagnostic Tests >> Steering Column Switches >> Pinpoint Tests >> Pinpoint Test A: No Power in All Ignition Switch Positions >> Pinpoint Test A: No Power In All Ignition Switch Positions

Pinpoint Test A: No Power In All Ignition Switch Positions

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. 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.
  1. A1 CHECK THE VOLTAGE SUPPLY TO THE BJB 
    • Disconnect: BJB Fuse 7 (60A)
    • Measure the voltage between BJB fuse 7 (60A) input side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A2.
    2. NO  : VERIFY fusible link(s) A (12 gauge, YE) and B (12 gauge, YE) in circuit 37 (YE) is OK. If OK, REPAIR circuit 37 (YE) for an open. TEST the system for normal operation.
  2. A2 CHECK THE VOLTAGE TO THE IGNITION SWITCH 
    • Connect: BJB Fuse 7 (60A)
    • Key in OFF position.
    • Disconnect: Ignition Switch C250
      • Fig 1: Checking Voltage To Ignition Switch
      GF0044838Courtesy of FORD MOTOR CO.
    • Measure the voltage between ground and:
      • ignition switch C250-2, circuit 1050 (LG/VT), harness side.
      • ignition switch C250-7, circuit 1050 (LG/VT), harness side.
      • ignition switch C250-9, circuit 1050 (LG/VT), harness side.
    • Are the voltages greater than 10 volts? 
    1. YES  : INSTALL a new ignition switch. REFER to Ignition Switch .
    2. NO  : VERIFY BJB fuse 7 (60A) is OK. If OK, REPAIR circuit 1050 (LG/VT). TEST the system for normal operation.
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