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Home >> Lincoln >> 2014 >> MKX FWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Information Center - Instrumentation, Message Center, And Warning Chimes >> Diagnosis And Testing >> Instrumentation, Message Center and Warning Chimes >> Pinpoint Tests >> Pinpoint Test AL: The Key-In-Ignition Warning Chime Is Inoperative >> Pinpoint Test Al: The Key-In-Ignition Warning Chime Is Inoperative

Pinpoint Test Al: The Key-In-Ignition Warning Chime Is Inoperative

  1. AL1 CHECK THE SAFETY BELT WARNING CHIME OPERATION 
    • Ignition OFF.
    • Ignition ON.
    • Monitor the safety belt warning chime when the ignition switch is transitioned from OFF to RUN for 6 seconds.

      Does the safety belt warning chime operate for approximately 6 seconds? 

  2. AL2 CHECK THE INTERIOR LAMPS OPERATION 
    • Open and close the driver door.
    • Observe the interior lamps.

      Do the interior lamps operate correctly from the driver door? 

  3. AL3 RETRIEVE THE RECORDED DTCs FROM THE BCM SELF-TEST 
    • Check the recorded DTCs from the BCM  self-test.

      Is DTC B10F1:14 present? 

      • Yes  : GO to  AL4.
      • No  : GO to  AL6.
  4. AL4 CHECK THE KEY-IN-IGNITION INPUT CIRCUIT FOR VOLTAGE 
    • Ignition OFF.
    • Insert the key into the ignition cylinder.
    • Disconnect: BCM C2280B  .
    • Measure the voltage between the BCM C2280B-34  , circuit CDC30 (BU/GY), harness side and ground.
      Fig 1: Measuring Voltage Between BCM C2280B-34, Circuit CDC30 (BU/GY) And Ground
      G07406190Courtesy of FORD MOTOR CO.

      Is the voltage greater than 10 volts? 

      • Yes  : GO to  AL6.
      • No  : GO to  AL5.
  5. AL5 CHECK THE IGNITION SWITCH 
    • Ignition OFF.
    • Disconnect: Ignition Switch C250  .
    • Carry out the ignition switch component test.

      Refer to OEM WIRING DIAGRAMS COMPONENT TESTING .

      Is the ignition switch OK? 

      • Yes  : REPAIR circuit CDC30 (BU/GY) for an open. CLEAR the DTCs. REPEAT the self-test.
      • No  : INSTALL a new ignition switch. REFER to STEERING COLUMN SWITCHES . CLEAR the DTCs. REPEAT the self-test.
  6. AL6 CHECK FOR CORRECT BCM OPERATION 
    • Disconnect all the BCM  connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the BCM  connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.

      Is the concern still present? 

      • Yes  : INSTALL a new BCM  . REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation.
      • No  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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