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Pinpoint Test B : An Individual Spot Lamp Is Inoperative

WARNING: This page is about a different car, the 2015 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

  1. B1 CHECK THE SPOT LAMP SWITCH INDICATOR

    • Ignition ON.
    • Place the headlamp switch in the PARKLAMPS position.
    • Using the spot lamp switch, enable the inoperative LH and RH spot lamp.

    Does the inoperative spot lamp switch indicator illuminate? 

    Yes  GO to  B5
    No  GO to  B2

  2. B2 CHECK FOR VOLTAGE TO THE SPOT LAMP MODULE

    • Place the headlamp switch in the OFF position.
    • Ignition OFF.
    • Disconnect: Spot Lamp Module C2506B .
    • Ignition ON.
    • Measure:

      LH Spot Lamp 

      Positive Lead Measurement / Action Negative Lead
      C2506B-1
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 Ground

      LH Spot Lamp 

      Positive Lead Measurement / Action Negative Lead
      C2506B-3
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  GO to  B3
    No  REPAIR the circuit.

  3. B3 CHECK THE SPOT LAMP SWITCH INPUT

    • Ignition OFF.
    • Disconnect: Spot Lamp Module C2506A .
    • While pressing the inoperative LH or RH spot lamp switch, measure:

      LH Spot Lamp 

      Positive Lead Measurement / Action Negative Lead
      C2506A-1
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground

      LH Spot Lamp 

      Positive Lead Measurement / Action Negative Lead
      C2506A-7
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance less than 3 ohms while pressing the inoperative LH or RH spot lamp switch? 

    Yes  INSTALL a new spot lamp module. REFER to: Spot Lamp Control Module .
    No  GO to  B4

  4. B4 CHECK THE SPOT LAMP SWITCH INPUT CIRCUITS FOR AN OPEN

    • Disconnect: Spot Lamp Switch C2507 .
    • Measure:

      LH Spot Lamp 

      Positive Lead Measurement / Action Negative Lead
      C2506A-1
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 C2507-2

      LH Spot Lamp 

      Positive Lead Measurement / Action Negative Lead
      C2506A-7
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 C2507-4

    Is the resistance less than 3 ohms? 

    Yes  INSTALL a new spot lamp switch. REFER to: Spot Lamp Switch .
    No  REPAIR the circuit.

  5. B5 CHECK FOR VOLTAGE TO THE INOPERATIVE SPOT LAMP

    • Place the headlamp switch in the OFF position.
    • Ignition OFF.
    • Disconnect: LH Exterior Mirror C521 or RH Exterior Mirror C622 .
    • Ignition ON.
    • Place the headlamp switch in the PARKLAMPS position and engage the inoperative spot lamp switch.
    • Measure:

      LH Spot Lamp 

      Positive Lead Measurement / Action Negative Lead
      C521-15
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 Ground

      RH Spot Lamp 

      Positive Lead Measurement / Action Negative Lead
      C622-15
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  GO to  B6
    No  GO to  B7

  6. B6 CHECK THE INOPERATIVE SPOT LAMP GROUND CIRCUIT FOR AN OPEN

    • Measure:

      LH Spot Lamp 

      Positive Lead Measurement / Action Negative Lead
      C521-15
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 C521-22

      RH Spot Lamp 

      Positive Lead Measurement / Action Negative Lead
      C622-15
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 C622-22

    Is the voltage greater than 11 volts? 

    Yes  CHECK the exterior mirror jumper harness between the vehicle harness and the lamp for open circuits and damaged or pushed-out pins. If the jumper harness is OK, INSTALL a new spot lamp (integrated into the exterior mirror turn lamp). REFER to: Exterior Mirror - Vehicles With: Long Arm Mirrors . If the jumper harness is not OK, REPAIR the jumper harness. If the harness can not be repaired, INSTALL a new exterior mirror. REFER to: Exterior Mirror - Vehicles With: Long Arm Mirrors .
    No  REPAIR the circuit.

  7. B7 CHECK SPOT LAMP VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO GROUND

    • Place the headlamp switch in the OFF position.
    • Ignition OFF.
    • Disconnect: Spot Lamp Module C2506B .
    • Measure:

      LH Spot Lamp 

      Positive Lead Measurement / Action Negative Lead
      C2506B-4
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground

      LH Spot Lamp 

      Positive Lead Measurement / Action Negative Lead
      C2506B-6
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  B8
    No  REPAIR the circuit.

  8. B8 CHECK SPOT LAMP VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

    • Measure:

      LH Spot Lamp 

      Positive Lead Measurement / Action Negative Lead
      C2506B-4
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 C521-15

      LH Spot Lamp 

      Positive Lead Measurement / Action Negative Lead
      C2506B-6
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 C622-15

    Is the resistance less than 3 ohms? 

    Yes  GO to  B9
    No  REPAIR the circuit.

  9. B9 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) 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. 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, Refer to BCM Hardware Testing .
    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.
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