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Home >> Mercury >> 2008 >> Milan Base, 2.3 Z, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1419 (Automatic Transmission External Controls) >> Diagnostic Tests >> External Controls >> Pinpoint Tests >> Pinpoint Test C: Key Stuck In The Ignition Cylinder Or Does Not Lock The Ignition Cylinder When The Selector Lever Is Not In Park

Pinpoint Test C: Key Stuck In The Ignition Cylinder Or Does Not Lock The Ignition Cylinder When The Selector Lever Is Not In Park

WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
  1. C1 TEST Battery Junction Box (BJB) FUSE 14 (15A) 
    • Check fuse: BJB Fuse 14 (15A)
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  C2.
    2. NO  : REPAIR the circuit. INSTALL a new fuse. TEST the system for normal operation.
  2. C2 TEST THE INHIBIT SOLENOID POWER CIRCUIT FOR AN OPEN 
    • Disconnect: Ignition Switch Electrical C250
      • Fig 1: Testing Inhibit Solenoid Power Circuit For An Open
      GF0041474Courtesy of FORD MOTOR CO.
    • Measure the resistance between the output side of BJB fuse 14 (15A) and ignition switch electrical C250-4, circuit SBB14 (BN/RD), vehicle harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  C3.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  3. C3 TEST FOR VOLTAGE AT THE SELECTOR LEVER CONNECTOR 
    • Select PARK.
    • Key in OFF position.
    • Disconnect: Selector Lever Electrical C3245 (2.3L/3.0L engine) or C3233 (3.5L engine)
    • Visually inspect the connector and wires for damage.
    • Key in ON position.
      • Fig 2: Testing For Voltage At Selector Lever Connector - 3.0L Or 2.3L
      GF0029874Courtesy of FORD MOTOR CO.
    • Vehicles equipped with a 3.0L or a 2.3L engine, measure the voltage between selector lever harness C3245-2, circuit CET22 (GY/BN), vehicle harness side and ground.
      • Fig 3: Testing For Voltage At Selector Lever Connector - 3.5L
      GF0029875Courtesy of FORD MOTOR CO.
    • Vehicles equipped with a 3.5L engine, measure the voltage between selector lever harness C3233-2, circuit CET22 (GY/BN), vehicle harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  C6.
    2. NO  : Go to  C4.
  4. C4 TEST FOR AN OPEN CIRCUIT 
    • Key in OFF position.
    • Disconnect: Ignition Switch Electrical C250
      • Fig 4: Testing For An Open Circuit - 3.0L or 2.3L
      GF0029876Courtesy of FORD MOTOR CO.
    • Vehicles equipped with a 3.0L or a 2.3L engine, measure the resistance between selector lever harness C3245-2, circuit CET22 (GY/BN), vehicle harness side and ignition switch electrical C250-3, circuit CET22 (GY/BN), vehicle harness side.
      • Fig 5: Testing For An Open Circuit - 3.5L
      GF0029877Courtesy of FORD MOTOR CO.
    • Vehicles equipped with a 3.5L engine, measure the resistance between selector lever harness C3233-2, circuit CET22 (GY/BN), vehicle harness side and ignition switch electrical C250-3, circuit CET22 (GY/BN), vehicle harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  C5.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  5. C5 TEST FOR A SHORT TO GROUND 
      Fig 6: Testing For A Short To Ground - 3.0L or 2.3L
      GF0029878Courtesy of FORD MOTOR CO.
    • Vehicles equipped with a 3.0L or a 2.3L engine, measure the resistance between selector lever harness 3245-2, circuit CET22 (GY/BN), vehicle harness side and ground.
      • Fig 7: Testing For A Short To Ground - 3.5L
      GF0029879Courtesy of FORD MOTOR CO.
    • Vehicles equipped with a 3.5L engine, measure the resistance between selector lever harness 3233-2, circuit CET22 (GY/BN), vehicle harness side and ground.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : INSTALL a new steering column lock module. REFER to STEERING COLUMN SWITCHES article.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  6. C6 TEST THE VEHICLE HARNESS GROUND CIRCUIT 
      Fig 8: Testing Shift Interlock Actuator Ground Circuit - 3.0L or a 2.3L
      GF0029867Courtesy of FORD MOTOR CO.
    • Vehicles equipped with a 3.0L or a 2.3L engine, measure the resistance between selector lever harness C3245-4, circuit GD116 (BK/VT), vehicle harness side and ground.
      • Fig 9: Measuring Resistance
      GF0029868Courtesy of FORD MOTOR CO.
    • Vehicles equipped with a 3.5L engine, measure the resistance between selector lever harness C3233-5, circuit GD116 (BK/VT), vehicle harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  C7.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  7. C7 TEST THE PARK DETECT SWITCH 
      Fig 10: Testing Park Detect Switch - 3.0L or 2.3L
      GF0029880Courtesy of FORD MOTOR CO.
    • Vehicles equipped with a 3.0L or a 2.3L engine, measure the resistance between selector lever harness C3245-2 and C3245-4, component side, with the selector lever in PARK and DRIVE.
      • Fig 11: Testing Park Detect Switch - 3.5L
      GF0029881Courtesy of FORD MOTOR CO.
    • Vehicles equipped with a 3.5L engine, measure the resistance between selector lever harness C3233-2 and C3233-5, component side, with the selector lever in PARK and DRIVE.
    • Is the resistance greater than 10,000 ohms in PARK and less than 5 ohms in DRIVE? 
    1. YES  : INSTALL a new steering column lock module. REFER to STEERING COLUMN SWITCHES article.
    2. NO  : INSTALL a new selector lever assembly. REFER to Selector Lever .
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