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Home >> Ford >> 2005 >> Escape Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 87 (Steering Column Switches -- F250-F550 Super Duty) >> Diagnosis And Testing >> Steering Column Switches >> Pinpoint Tests >> Pinpoint Test A: The Ignition Switch Is Inoperative

Pinpoint Test A: The Ignition Switch Is Inoperative

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  1. A1 CHECK THE VOLTAGE TO THE IGNITION SWITCH 
    • Key in OFF position.
    • Disconnect: Ignition Switch C250.
    • Measure the voltage between the ignition switch circuits and ground, as follows:
      IGNITION SWITCH CIRCUITS

      Ignition Switch Circuit
      C250-7 37 (YE)
      C250-12 37 (YE)
      C250-2 325 (DB/OG)
      C250-9 1050 (LG/PK)
      Fig 1: Measuring Voltage Between Ignition Switch Circuits And Ground
      G03919738Courtesy of FORD MOTOR CO.
    • Are the voltages greater than 10 volts? 
    • Yes  : INSTALL a new ignition switch. REFER to IGNITION SWITCH . TEST the system for normal operation.
    • No  : REPAIR the circuit(s) in question. TEST the system for normal operation.
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