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Pinpoint Test E: The High Beam(S) Are Always On

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. E1 CHECK FOR DTC B1510 OR DTC B2A23 
    • Review the DTCs retrieved from the SJB self-test.
    • Is DTC B1510 or DTC B2A23 present? 
    1. Yes  : GO to E2.
    2. No  : For Fusion or MKZ, GO to  E4.

      For Milan, GO to  E5.

  2. E2 CHECK THE MULTIFUNCTION SWITCH 
    • Ignition OFF.
    • Disconnect: Multifunction Switch C202.
    • Ignition ON.
    • Do the high beams continue to illuminate? 
    1. Yes  : GO to E3.
    2. No  : INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES article. CLEAR the DTCs. REPEAT the self-test.
  3. E3 CHECK THE HIGH BEAM AND FLASH-TO-PASS REQUEST INPUT CIRCUITS FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Disconnect: SJB C2280b.
    • Measure the resistance between the multifunction switch C202-6, circuit CLF17 (WH/OG), harness side and ground; and between the multifunction switch C202-4, circuit CLF27 (GN/BN), harness side and ground.
      Fig 1: Measuring Resistance Between Multifunction Switch C202-6, Circuit CLF17 (WH/OG), Harness Side And Ground
      G06065225Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 
    1. Yes  : GO to  E6.
    2. No  : REPAIR the circuit in question for a short to ground. CLEAR the DTCs. REPEAT the self-test.
  4. E4 CHECK THE SJB HIGH BEAM OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE (FUSION OR MKZ) 
    • Ignition OFF.
    • Disconnect: SJB C2280e.
    • Ignition ON.
    • Do the high beams continue to illuminate? 
    1. Yes  : REPAIR circuit CLF08 (YE/VT) for a short to voltage. TEST the system for normal operation.
    2. No  : GO to  E6.
  5. E5 CHECK THE SJB HIGH BEAM OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE (MILAN) 
    NOTE: If only an individual high beam is always on, install a new headlamp assembly. Refer to HEADLAMP ASSEMBLY  in this service information.
    • Ignition OFF.
    • Disconnect: LH or RH Headlamp.
    • Disconnect: SJB C2280e.
    • Ignition ON.
    • 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 2: Measuring Voltage Between LH Headlamp C1021-7, Circuit CLF08 (YE/VT), Harness Side And Ground
      G06257284Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    1. Yes  : REPAIR circuit CLF08 (YE/VT) for a short to voltage. TEST the system for normal operation.
    2. No  : GO to E6.
  6. E6 CHECK FOR CORRECT SJB OPERATION 
    • Disconnect all the SJB connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the SJB connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. Yes  : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES -- FUSION, MILAN & MKZ article. TEST the system for normal operation.
    2. No  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
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