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Home >> Ford >> 2005 >> Escape Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1611 (Exterior Lighting System) >> Diagnosis And Testing >> Headlamps >> Pinpoint Tests >> Pinpoint Test C: One High Beam Headlamp Is Inoperative >> Pinpoint Test C: One High Beam Headlamp Is Inoperative

Pinpoint Test C: One High Beam Headlamp Is Inoperative

WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. C1 CHECK FOR VOLTAGE TO THE HEADLAMP 
    • Ignition OFF.
    • Disconnect: Inoperative Headlamp.
    • Place the headlamp switch in the HEADLAMPS ON position.
    • Place the multifunction switch in the HIGH BEAM position.
    • Measure the voltage between the LH headlamp C1021-7, circuit CLF08 (YE/VT), harness side and ground; or between the RH headlamp C1041-7, circuit CLF08 (YE/VT), harness side and ground.
      Fig 1: Measuring Voltage Between LH Headlamp C1021-7, Circuit CLF08 (YE/VT), Harness Side And Ground
      G06257284Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. Yes  : For Fusion or MKZ, GO to C2.

      For Milan, INSTALL a new headlamp assembly.

      REFER to HEADLAMP ASSEMBLY  in this service information. TEST the system for normal operation.

    2. No  : REPAIR circuit CLF08 (YE/VT) for an open. TEST the system for normal operation.
  2. C2 CHECK FOR VOLTAGE TO THE HEADLAMP USING THE HIGH BEAM GROUND PIN 
    • Measure the voltage between the LH headlamp C1021-7, circuit CLF08 (YE/VT), harness side and the LH headlamp C1021-4, circuit GD121 (BK/YE), harness side; or between the RH headlamp C1041-7, circuit CLF08 (YE/VT), harness side and the RH headlamp C1041-4, circuit GD123 (BK/GY), harness side.
      Fig 2: Measuring Voltage Between LH Headlamp C1021-7, Circuit CLF08 (YE/VT) And LH Headlamp C1021-4, Circuit GD121 (BK/YE)
      G06133748Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. Yes  : REPAIR or INSTALL a new headlamp assembly. REFER to HEADLAMP ASSEMBLY  in this service information. TEST the system for normal operation.
    2. No  : REPAIR circuit GD121 (BK/YE) (LH headlamp) or circuit GD123 (BK/GY) (RH headlamp) for an open. TEST the system for normal operation.
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