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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1168 (Exterior Lighting System) >> Diagnosis And Testing >> Daytime Running Lamps (DRL) >> Pinpoint Tests >> Pinpoint Test A : The DRL (Daytime Running Lamps) Are Inoperative >> Pinpoint Test A : The DRL (Daytime Running Lamps) Are Inoperative

Pinpoint Test A : The DRL (Daytime Running Lamps) Are Inoperative

WARNING: This page is about a different car, the 2018 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Before beginning this test, refer to Description And Operation  for proper DRL operation.

  1. A1 CHECK THE OPERATION OF THE PARKING LAMPS

    • Ignition OFF.

    • Place the headlamp switch in the PARKING LAMPS ON position.

    Do the front parking lamps operate correctly? 

    Yes  For signature lamp DRL, GO to  A2For front bumper DRL, GO to  A5
    No  REFER to: Parking, Rear and License Plate Lamps .

  2. A2 CHECK SIGNATURE LAMP DRL (DAYTIME RUNNING LAMPS) CIRCUIT FOR VOLTAGE

    • Place the headlamp switch in the OFF position.

    • For vehicles except China and Canada, make sure the DRL are enabled through the IPC.

    • Disconnect: Except China, LH Headlamp C1509A or RH Headlamp C1510A .

    • Disconnect: China Only, LH Headlamp C1758A or RH Headlamp C1759A .

    • Ignition ON.

    • Place the headlamp switch in the PARKING LAMPS ON position.

    • Apply the brake.

    • Select NEUTRAL.

    • Except China, Measure:

      LH Signature Lamp DRL 

      Positive Lead Measurement / Action Negative Lead
      C1509A-7
      GFD227147Courtesy of FORD MOTOR COMPANY
      		 Ground

      RH Signature Lamp DRL 

      Positive Lead Measurement / Action Negative Lead
      C1510A-7
      GFD227147Courtesy of FORD MOTOR COMPANY
      		 Ground

    • China Only, Measure:

      LH Signature Lamp DRL 

      Positive Lead Measurement / Action Negative Lead
      C1758A-7
      GFD227147Courtesy of FORD MOTOR COMPANY
      		 Ground

      RH Signature Lamp DRL 

      Positive Lead Measurement / Action Negative Lead
      C1759A-7
      GFD227147Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  INSTALL a new headlamp assembly. REFER to: Headlamp Assembly .
    No  GO to  A3

  3. A3 CHECK DRL (DAYTIME RUNNING LAMPS) CIRCUIT FOR A SHORT TO GROUND

    • Place the headlamp switch in the OFF position.

    • Ignition OFF.

    • Except China, Measure:

      LH Signature Lamp DRL 

      Positive Lead Measurement / Action Negative Lead
      C1509A-7
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 Ground

      RH Signature Lamp DRL 

      Positive Lead Measurement / Action Negative Lead
      C1510A-7
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 Ground

    • China Only, Measure:

      LH Signature Lamp DRL 

      Positive Lead Measurement / Action Negative Lead
      C1758A-7
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 Ground

      RH Signature Lamp DRL 

      Positive Lead Measurement / Action Negative Lead
      C1759A-7
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  A4
    No  REPAIR the circuit.

  4. A4 CHECK DRL (DAYTIME RUNNING LAMPS) CIRCUIT FOR AN OPEN

    • Except China, Measure:

      LH Signature Lamp DRL 

      Positive Lead Measurement / Action Negative Lead
      C1509A-7
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 C2280C-40

      RH Signature Lamp DRL 

      Positive Lead Measurement / Action Negative Lead
      C1510A-7
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 C2280C-40

    • China Only, Measure:

      LH Signature Lamp DRL 

      Positive Lead Measurement / Action Negative Lead
      C1758A-7
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 C2280C-40

      RH Signature Lamp DRL 

      Positive Lead Measurement / Action Negative Lead
      C1759A-7
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 C2280C-40

    Is the resistance less than 3 ohms? 

    Yes  GO to  A9
    No  REPAIR the circuit.

  5. A5 CHECK THE BUMPER VOLTAGE FROM THE DRL (DAYTIME RUNNING LAMPS) AND SWITCHED POWER SUPPLY CIRCUITS

    • Place the headlamp switch in the OFF position.

    • For vehicles except China and Canada, make sure the DRL are enabled through the IPC.

    • Disconnect: LH Daytime Running Lamp C1750 or RH Daytime Running Lamp C1751 .

    • Ignition ON.

    • Apply the brake.

    • Select NEUTRAL.

    • Measure:

      LH DRL 

      Positive Lead Measurement / Action Negative Lead
      C1750-2
      GFD227147Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1750-3
      GFD227147Courtesy of FORD MOTOR COMPANY
      		 Ground

      RH DRL 

      Positive Lead Measurement / Action Negative Lead
      C1751-2
      GFD227147Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1751-3
      GFD227147Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the voltages greater than 11 volts? 

    Yes  GO to  A6
    No  GO to  A7

  6. A6 CHECK THE BUMPER DRL (DAYTIME RUNNING LAMPS) GROUND CIRCUIT

    • Measure:

      LH DRL 

      Positive Lead Measurement / Action Negative Lead
      C1750-2
      GFD227147Courtesy of FORD MOTOR COMPANY
      		 C1750-1

      RH DRL 

      Positive Lead Measurement / Action Negative Lead
      C1751-2
      GFD227147Courtesy of FORD MOTOR COMPANY
      		 C1751-1

    Is the voltage greater than 11 volts? 

    Yes  INSTALL a new daytime running lamp. REFER to: Daytime Running Lamp .
    No  REPAIR the circuit.

  7. A7 CHECK THE BUMPER DRL (DAYTIME RUNNING LAMPS) CIRCUIT FOR A SHORT TO GROUND

    • Ignition OFF.

    • Measure:

      LH DRL 

      Positive Lead Measurement / Action Negative Lead
      C1750-2
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 Ground

      RH DRL 

      Positive Lead Measurement / Action Negative Lead
      C1751-2
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  A8
    No  REPAIR the circuit.

  8. A8 CHECK THE DRL (DAYTIME RUNNING LAMPS) AND SWITCHED POWER SUPPLY CIRCUITS FOR AN OPEN

    • Measure:

      LH DRL 

      Positive Lead Measurement / Action Negative Lead
      C1750-2
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 C2280C-36
      C1750-3
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 C2280B-12

      RH DRL 

      Positive Lead Measurement / Action Negative Lead
      C1751-2
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 C2280C-36
      C1751-3
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 C2280B-12

    Is the resistance less than 3 ohms? 

    Yes  GO to  A9
    No  REPAIR the circuit in question.

  9. A9 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 -- MKC .
    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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