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Pinpoint Test A: The Climate Control Illumination Is Inoperative - Front Or Rear (If Equipped)

CAUTION: Use the correct probe adaptor(s) when making measurements. Failure to use he correct probe adaptor(s) may damage the connector.
  1. A1 CHECK THE ILLUMINATION CIRCUIT 1417 (LG/RD) FOR VOLTAGE 
    • Key in OFF position.
    • Disconnect: Inoperative Climate Control Assembly
    • 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
      GF0033756Courtesy of FORD MOTOR CO.
    • Measure the voltage between the climate control assembly C294a-2, circuit 1417 (LG/RD), harness side or between the RICP C9025-17, circuit 1417 (LG/RD), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A2.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  2. A2 CHECK CIRCUITS 1203 (BK/LB) AND 1205 (BK) FOR GROUND 
      Fig 2: Checking Circuit For Ground
      GF0033757Courtesy of FORD MOTOR CO.
    • Measure the resistance between the climate control assembly C294a-1, circuit 1203 (BK/LB), harness side or between the RICP C9025-7, circuit 1205 (BK), harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new climate control component (front or rear). REFER to CLIMATE CONTROL article. TEST the system for normal operation.
    2. NO  : REPAIR the circuit in question. TEST the system for normal operation.
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