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Home >> Ford >> 2005 >> Escape Hybrid, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 854 (Instrument Cluster System And Panel Illumination (F250-F550)) >> Diagnostic Tests >> Instrument Cluster and Panel Illumination >> Pinpoint Tests >> Pinpoint Test B: The Instrument Cluster Illumination Is Inoperative >> Pinpoint Test B: The Instrument Cluster Illumination Is Inoperative

Pinpoint Test B: The Instrument Cluster Illumination Is Inoperative

WARNING: This page is about a different car, the 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Use the correct probe adaptor(s) when making measurements. Failure to use the correct probe adaptor(s) may damage the connector.
  1. B1 CHECK CIRCUIT 19 (LB/RD) FOR AN OPEN 
    • Key in OFF position.
    • 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.
    • Measure the voltage between the instrument cluster C220a-12, circuit 19 (LB/RD), harness side and ground.
      • Fig 1: Checking Circuit 19 (LB/RD) For Open
      GF0008145Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  B2.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  2. B2 CHECK CIRCUIT 57 (BK) FOR AN OPEN 
    • Place the headlamp switch in the OFF position.
    • Measure the resistance between the instrument cluster C220a-10, circuit 57 (BK), harness side and ground.
      • Fig 2: Checking Circuit 57 (BK) For Open
      GF0008146Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  B3.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  3. B3 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION 
    • Disconnect all the instrument cluster connectors.
    • Check for:
      • corrosion
      • 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. CLEAR the DTCs. TEST the system for normal operation.
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