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Home >> Mercury >> 2010 >> Milan Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 742 (Warning System - F-150 & Mark LT) >> Diagnostic Tests >> Warning Devices >> Pinpoint Tests >> Pinpoint Test E: The Chime Sounds When The Driver Door Is Ajar (No Key In Ignition and Headlamps Off) >> Pinpoint Test E: The Chime Sounds When The Driver Door Is Ajar (No Key In Ignition And Headlamps Off)

Pinpoint Test E: The Chime Sounds When The Driver Door Is Ajar (No Key In Ignition And Headlamps Off)

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. E1 CHECK CIRCUIT 158 (BK/PK) FOR A SHORT TO VOLTAGE 
    • Remove the key from the ignition lock cylinder.
    • Disconnect: Instrument Cluster C220b
    • Measure the voltage between the instrument cluster C220b-15, circuit 158 (BK/PK), harness side and ground.
      Fig 1: Checking Circuit 158 (BK/PK) For Short To Voltage
      GF0004500Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    1. YES  : Go to  E2.
    2. NO  : Go to  E3.
  2. E2 CHECK FOR CORRECT KEY-IN-IGNITION WARNING SWITCH OPERATION 
    • Disconnect: Ignition Switch C250
    • Measure the voltage between the instrument cluster C220b-15, circuit 158 (BK/PK), harness side and ground.
      Fig 2: Checking For Correct Key-In-Ignition Warning Switch Operation
      GF0004500Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    1. YES  : REPAIR the circuit. TEST the system for normal operation.
    2. NO  : INSTALL a new ignition switch. REFER to STEERING COLUMN SWITCHES article. TEST the system for normal operation.
  3. E3 CHECK CIRCUIT 257 (WH/RD) FOR VOLTAGE 
    • Turn the headlamp switch OFF.
    • Disconnect: Instrument Cluster C220a
    • Measure the voltage between the instrument cluster C220a-9, circuit 257 (WH/RD), harness side and ground.
      Fig 3: Checking Circuit 257 (WH/RD) For Voltage
      GF0004502Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    1. YES  : Go to  E4.
    2. NO  : Go to  E5.
  4. E4 CHECK FOR CORRECT HEADLAMP SWITCH OPERATION 
    • Disconnect: Headlamp Switch C2150a
    • Measure the voltage between the instrument cluster C220a-9, circuit 257 (WH/RD), harness side and ground.
      Fig 4: Checking For Correct Headlamp Switch Operation
      GF0004502Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    1. YES  : REPAIR the circuit. TEST the system for normal operation.
    2. NO  : INSTALL a new headlamp switch. REFER to EXTERIOR LIGHTING article. TEST the system for normal operation.
  5. E5 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 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.