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Home >> Lincoln >> 2005 >> Aviator RWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Cluster And Panel Illumination >> Diagnosis And Testing >> Instrument Cluster and Panel Illumination >> Pinpoint Tests >> Pinpoint Test E: The Steering Wheel Control Switch Is Inoperative >> Pinpoint Test E: The Steering Wheel Control Switch Is Inoperative

Pinpoint Test E: The Steering Wheel Control Switch Is Inoperative

  1. E1 CHECK VOLTAGE TO THE CLOCKSPRING CONNECTOR 
    • Place the headlamp switch in the OFF position.
    • Disconnect: Clockspring C218a.
    • Place the headlamp switch in the PARK position.
    • Measure the voltage between the clockspring C218a-1, circuit 1011 (TN/OG), harness side and ground.
      Fig 1: Measuring Voltage Between Clockspring C218a-1, Circuit 1011 (TN/OG), Harness Side And Ground
      G03859725Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. Yes  : GO to E2.
    2. No  : REPAIR the circuit. TEST the system for normal operation.
  2. E2 CHECK THE CLOCKSPRING FOR VOLTAGE 
    • Place the headlamp switch in the OFF position.
    • Connect: Clockspring C218a.
    • Remove the driver air bag module. refer to SUPPLEMENTAL RESTRAINT SYSTEM .
    • Connect: Restraint System Diagnostic Tools 418-F395 (014-R1079) to the driver air bag module electrical connectors.
      • WARNING: Make sure there is no one inside the vehicle and that there is nothing blocking or set in front of any air bag module when the battery is connected. Failure to follow these instructions may result in personal injury.
    • Connect the battery. Refer to BATTERY, MOUNTING AND CABLES .
    • Disconnect: Upper Clockspring Connector.
    • Place the headlamp switch in the PARK position.
    • Rotate the panel dimmer switch to the full illumination position.
    • Measure the voltage between the upper clockspring terminal 6, component side and ground.
      Fig 2: Measuring Voltage Between Upper Clockspring Terminal 6, Component Side And Ground
      G03859726Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. Yes  : GO to E3.
    2. No  : INSTALL a new clockspring. refer to SUPPLEMENTAL RESTRAINT SYSTEM . TEST the system for normal operation. DISCONNECT the battery. REFER to BATTERY, MOUNTING AND CABLES . INSTALL the air bag. refer to SUPPLEMENTAL RESTRAINT SYSTEM .
  3. E3 CHECK THE STEERING WHEEL CONTROL SWITCH HARNESS 
    • Inspect the steering wheel control switch harness for shorts, opens or any damage.
    • Is the steering wheel control switch harness OK? 
    1. Yes  : INSTALL new steering wheel control switch(es). REFER to SPEED CONTROL or AUDIO UNIT . TEST the system for normal operation. DISCONNECT the battery. REFER to BATTERY, MOUNTING AND CABLES . INSTALL the air bag. Refer to SUPPLEMENTAL RESTRAINT SYSTEM .
    2. No  : INSTALL a new steering wheel control switch harness. TEST the system for normal operation. DISCONNECT the battery. REFER to BATTERY, MOUNTING AND CABLES . INSTALL the air bag. refer to SUPPLEMENTAL RESTRAINT SYSTEM .
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