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Pinpoint Test E: The Headlamps Are On Continuously

WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
  1. E1 VERIFY THE HEADLAMP OPERATION 
    • Key in OFF position.
      • NOTE: Make sure the multifunction switch is in the LOW BEAM position.
    • Place the headlamp switch in the OFF position.
    • Are the low beam headlamps illuminated? 
    1. YES  : If equipped with autolamps, go to  E2.

      If not equipped with autolamps, go to  E3.

    2. NO  : If equipped with fog lamps, go to  E10.

      If not equipped with fog lamps, go to  E11.

  2. E2 CHECK THE AUTOLAMP SYSTEM 
    • Disconnect: VSM C3008a
    • Do the headlamps continue to illuminate? 
    1. YES  : Go to  E3.
    2. NO  : Go to  E15.
  3. E3 CHECK THE VEHICLE CONTENT 
    • Check the vehicle content for DRL.
    • Is the vehicle equipped with DRL? 
    1. YES  : Go to  E4.
    2. NO  : Go to  E5.
  4. E4 CHECK THE DRL SYSTEM 
    • Disconnect: DRL Resistor C196
    • Do the headlamps continue to illuminate? 
    1. YES  : Go to  E5.
    2. NO  : REFER to Daytime Running Lamps (DRL)  in this article.
  5. E5 CHECK THE HEADLAMP SWITCH 
    • Disconnect: Headlamp Switch C2150a
    • Do the headlamps continue to illuminate? 
    1. YES  : Go to  E6.
    2. NO  : INSTALL a new headlamp switch. REFER to Headlamp Switch  in this article. TEST the system for normal operation.
  6. E6 CHECK THE POWER SUPPLY CIRCUIT TO THE MULTIFUNCTION SWITCH 
    • Disconnect: Multifunction Switch C202b
    • Do the headlamps continue to illuminate? 
    1. YES  : Go to  E8.
    2. NO  : Go to  E7.
  7. E7 CHECK THE MULTIFUNCTION SWITCH 
    • Carry out the multifunction switch component test. Refer to COMPONENT TESTING.
    • Is the multifunction switch OK? 
    1. YES  : REPAIR circuit 15 (RD/YE). TEST the system for normal operation.
    2. NO  : INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES article. TEST the system for normal operation.
  8. E8 CHECK CIRCUITS 160 (DB/WH) (LH HEADLAMP) AND 161 (DG/OG) (RH HEADLAMP) FOR A SHORT TO POWER 
    • Disconnect: CJB C270b
    • Do either of the headlamps continue to illuminate? 
    1. YES  : REPAIR the circuit in question. TEST the system for normal operation.
    2. NO  : Go to  E9.
  9. E9 CHECK CIRCUIT 13 (RD/BK) FOR A SHORT TO POWER 
    • Connect: CJB C270b
    • Disconnect: CJB C270h
    • Do the headlamps continue to illuminate? 
    1. YES  : REPAIR or INSTALL a new CJB. TEST the system for normal operation.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  10. E10 CHECK THE FOG LAMP RELAY 
    • Disconnect: Fog Lamp Relay C1007
    • Do the headlamps continue to illuminate? 
    1. YES  : Go to  E11.
    2. NO  : INSTALL a new fog lamp relay. TEST the system for normal operation.
  11. E11 CHECK THE MULTIFUNCTION SWITCH (HIGH BEAM) 
    • Disconnect: Multifunction Switch C202b
    • Do the headlamps continue to illuminate? 
    1. YES  : Go to  E12.
    2. NO  : INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES article. TEST the system for normal operation.
  12. E12 CHECK CIRCUIT 275 (YE) FOR A SHORT TO POWER 
    • Disconnect: CJB C270h
    • Do the headlamps continue to illuminate? 
    1. YES  : Go to  E13.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  13. E13 CHECK CIRCUIT 12 (LG/BK) FOR A SHORT TO POWER 
    • Disconnect: CJB C270a
    • Do the headlamps continue to illuminate? 
    1. YES  : REPAIR the circuit. TEST the system for normal operation.
    2. NO  : Go to  E14.
  14. E14 CHECK THE HIGH BEAM RELAY 
    • Disconnect: High Beam Relay C1050
    • Carry out the high beam relay component test. Refer to COMPONENT TESTING.
    • Is the high beam relay OK? 
    1. YES  : REPAIR or INSTALL a new CJB. TEST the system for normal operation.
    2. NO  : INSTALL a new high beam relay. TEST the system for normal operation.
  15. E15 CHECK FOR CORRECT VSM OPERATION 
    • Disconnect all the VSM connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the VSM 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 VSM. REFER to MULTIFUNCTION ELECTRONIC MODULES 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.
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