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Pinpoint Test C: The High Beams Are Inoperative

WARNING: This page is about a different car, the 2004 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
  1. C1 CHECK THE OPERATION OF THE HIGH BEAM INDICATOR 
    • Turn on the high beams.
    • Does the high beam indicator illuminate? 
    1. Yes  : GO to  C3.
    2. No  : GO to C2.
  2. C2 CHECK THE MULTIFUNCTION SWITCH 
    • Carry out the multifunction switch component test for the headlamps.

      Refer to the appropriate SYSTEM WIRING DIAGRAMS for schematic and connector information.

    • Is the multifunction switch OK? 
    1. Yes  : GO to  C4.
    2. No  : INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES . TEST the system for normal operation.
  3. C3 CHECK CIRCUIT 12 (LG/BK) FOR AN OPEN 
    • Disconnect: SJB C2280a.
    • Disconnect: LH Headlamp C1021.
    • Measure the resistance between the SJB C2280a pin 25, circuit 12 (LG/BK), harness side and the LH headlamp C1021 pin 1 circuit 12 (LG/BK), harness side.
      Fig 1: Checking Circuit 12 (LG/BK) For An Open
      G03277182Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes  : GO to  C5.
    2. No  : REPAIR the circuit. TEST the system for normal operation.
  4. C4 CHECK CIRCUIT 632 (GY/OG) FOR AN OPEN 
    • Connect: Multifunction Switch.
    • Disconnect: SJB C2280b.
    • Place the headlamp switch to the headlamps ON position.
    • Place the multifunction switch to the high beam position.
    • Measure the voltage between the SJB C2280b pin 30, circuit 632 (GY/OG), harness side and ground.
      Fig 2: Checking Circuit 632 (GY/OG) For An Open
      G03277183Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. Yes  : GO to C5.
    2. No  : REPAIR the circuit. TEST the system for normal operation.
  5. C5 CHECK FOR CORRECT SJB OPERATION 
    • Key in OFF position.
    • Disconnect all SJB connectors.
    • Check for:
      • Corrosion
      • Pushed-out pins
    • Connect all 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 CONTROL MODULES . TEST the system for normal operation.
    2. No  : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
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