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Home >> Mercury >> 2008 >> Milan Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 732 (Instrument Cluster System) >> Diagnostic Tests >> Instrument Cluster (IC) >> Pinpoint Tests >> Pinpoint Test O: The High Beam Indicator Is Never On >> Pinpoint Test O: The High Beam Indicator Is Never On

Pinpoint Test O: The High Beam Indicator Is Never On

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.
CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. O1 VERIFY HIGH BEAM OPERATION 
    • Verify the high beam headlamps operation.
    • Do the high beam headlamps operate correctly? 
    1. YES  : Go to  O2.
    2. NO  : REFER to EXTERIOR LIGHTING article.
  2. O2 CHECK CIRCUIT 12 (LG/BK) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Instrument Cluster C220a
      • NOTE: Headlamps must be on for this test.
    • Place the multifunction switch in the HIGH BEAM position.
    • Measure the voltage between the instrument cluster C220a-10, circuit 12 (LG/BK), harness side and ground.
      • Fig 1: Checking Circuit 12 (LG/BK) For Open
      GF0004465Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  O3.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  3. O3 CHECK CIRCUIT 57 (BK) FOR AN OPEN 
    • Measure the resistance between the instrument cluster C220a-17, circuit 57 (BK), harness side and ground.
      • Fig 2: Checking Circuit 57 (BK) For Open
      GF0004466Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  O4.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  4. O4 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION 
    • Disconnect all the instrument cluster connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the instrument cluster 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 instrument cluster. REFER to Instrument Cluster (IC)  in this 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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