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Home >> Ford >> 2007 >> Freestar SEL >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Cluster System And Panel Illumination >> Diagnostic Tests >> Instrument Cluster and Panel Illumination >> Pinpoint Tests >> Pinpoint Test E: The Instrument Cluster Illumination Is Inoperative >> Pinpoint Test E: The Instrument Cluster Illumination Is Inoperative

Pinpoint Test E: The Instrument Cluster Illumination Is Inoperative

CAUTION: Use the correct probe adaptor(s) when making measurements. Failure to use he correct probe adaptor(s) may damage the connector.
  1. E1 CHECK FOR VOLTAGE TO THE INSTRUMENT CLUSTER 
    • Disconnect: Instrument Cluster C220a
    • Place the headlamp switch in the PARKING LAMPS ON position.
    • Rotate the instrument panel dimmer switch to the full illumination position.
      • Fig 1: Checking Circuit For Voltage
      GF0033763Courtesy of FORD MOTOR CO.
    • Measure the voltage between the instrument cluster C220a-3, circuit 1418 (LB/WH), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  E3.
    2. NO  : Go to  E2.
  2. E2 CHECK CIRCUIT 1418 (LB/WH) FOR AN OPEN OR SHORT TO GROUND 
    • Disconnect: SJB C220a
      • Fig 2: Checking Circuit For Open Or Short To Ground
      GF0033764Courtesy of FORD MOTOR CO.
    • Measure the resistance between the instrument cluster C220a-3, circuit 1418 (LB/WH), harness side and the SJB C2280a-3, circuit 1418 (LB/WH), harness side; and between the instrument cluster C220a-3, circuit 1418 (LB/WH), harness side and ground.
    • Is the resistance less than 5 ohms between the instrument cluster and the SJB, and greater than 10,000 ohms between the instrument cluster and ground? 
    1. YES  : Go to  E5.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  3. E3 CHECK CIRCUIT 1205 (BK) FOR AN OPEN 
      Fig 3: Checking Circuit For Open
      GF0033765Courtesy of FORD MOTOR CO.
    • Measure the resistance between the instrument cluster C220a-20, circuit 1205 (BK), harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  E4.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  4. E4 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION 
    • Disconnect the instrument cluster connector.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect the instrument cluster connector and make sure it seats 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.
  5. E5 CHECK FOR CORRECT SJB OPERATION 
    • Disconnect all the SJB connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the 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 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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