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Pinpoint Test A: The High Beams Are Inoperative

WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
  1. A1 CHECK THE RECORDED RESULTS FROM THE DDM SELF-TEST 
    • Key in OFF position.
    • Check the recorded results from the DDM self-test.
    • Is DTC B1153 present? 
    1. YES  : Go to  A2.
    2. NO  : Go to  A4.
  2. A2 CHECK THE WIG-WAG MODULE 
    • Key in OFF position.
    • Disconnect: Wig-Wag Module C1352 (Non-Fleet) or C1365 (Fleet)
    • Key in ON position.
    • Repeat the DDM self-test.
    • Is DTC B1153 present? 
    1. YES  : Go to  A3.
    2. NO  : INSTALL a new wig-wag module. TEST the system for normal operation.
  3. A3 CHECK CIRCUIT 165 (TN/WH) FOR A SHORT TO GROUND 
    • Key in OFF position.
    • Disconnect: DDM C501a
      • Fig 1: Checking Circuit For Short To Ground
      GF0014531Courtesy of FORD MOTOR CO.
    • Measure the resistance between the DDM C501a-21, circuit 165 (TN/WH), harness side and ground.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  A10.
    2. NO  : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  4. A4 CHECK THE FLASH-TO-PASS OPERATION 
    • Place the multifunction switch in the FLASH-TO-PASS position.
    • Do the high beam headlamps illuminate? 
    1. YES  : Go to  A7.
    2. NO  : Go to  A5.
  5. A5 BYPASS THE MULTIFUNCTION SWITCH 
    • Key in OFF position.
    • Disconnect: Multifunction Switch C202c
      • Fig 2: Connecting Fused Jumper Wire
      GF0014532Courtesy of FORD MOTOR CO.
    • Connect a fused (5A) jumper wire between the multifunction switch C202c-9, circuit 57 (BK), harness side and the multifunction switch C202c-10, circuit 12 (LG/BK), harness side.
    • Key in ON position.
    • Place the headlamp switch in the HEADLAMPS ON position.
    • Do the high beam headlamps illuminate? 
    1. YES  : INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES article. TEST the system for normal operation.
    2. NO  : REMOVE the jumper wire. Go to  A6.
  6. A6 CHECK CIRCUIT 12 (LG/BK) FOR AN OPEN 
    • Place the headlamp switch in the OFF position.
    • Key in OFF position.
    • Disconnect: LCM C2145d
      • Fig 3: Checking Circuit For Open
      GF0014533Courtesy of FORD MOTOR CO.
    • Measure the resistance between the multifunction switch C202c-10, circuit 12 (LG/BK), harness side and the LCM C2145d-26, circuit 12 (LG/BK), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  A8.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  7. A7 CHECK CIRCUIT 57 (BK) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Multifunction Switch C202c
      • Fig 4: Checking Circuit For Open
      GF0014534Courtesy of FORD MOTOR CO.
    • Measure the resistance between the multifunction switch C202c-9, circuit 57 (BK), harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES article. TEST the system for normal operation.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  8. A8 CHECK CIRCUIT 910 (PK) FOR AN OPEN (TO LCM) 
    • Key in OFF position.
    • Disconnect: LCM C2145c
      • Fig 5: Checking Circuit For Open
      GF0014535Courtesy of FORD MOTOR CO.
    • Measure the voltage between the LCM C2145c-1, circuit 910 (PK), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A9.
    2. NO  : VERIFY the CJB fuse 23 (15A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation.
  9. A9 CHECK FOR CORRECT LCM OPERATION 
    • Key in OFF position.
    • Disconnect all the LCM connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the LCM 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 LCM. 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.
  10. A10 CHECK FOR CORRECT DDM OPERATION 
    • Disconnect all the DDM connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the DDM 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 DDM. 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. CLEAR the DTCs. REPEAT the self-test.
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