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

AI1 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.
- Does the safety belt warning chime operate for approximately 6 seconds?
- Yes : GO to AI2.
- No : INSTALL a new IPC. REFER to INSTRUMENT PANEL CLUSTER (IPC) . TEST the system for normal operation.
AI2 CHECK THE INTERIOR LAMPS OPERATION
- Check the operation of the courtesy lamps from the driver door.
- Do the courtesy lamps operate correctly from the driver door?
- Yes : GO to AI3.
- No : REFER to INTERIOR LIGHTING SYSTEM .
AI3 RETRIEVE THE RECORDED DTCs FROM THE IPC SELF-TEST
- Check for recorded DTCs from the IPC self-test.
- Are any DTCs recorded?
- Yes : REFER to DTC CHARTS .
- No : For vehicles with IA, GO to AI4.
  For vehicles without IA, GO to AI5.
AI4 RETRIEVE THE RECORDED DTCs FROM THE RFA MODULE SELF-TEST
- Check the recorded DTCs from the RFA module self-test.
- Are any DTCs present?
- Yes : REFER to MULTIFUNCTION ELECTRONIC MODULES .
- No : INSTALL a new RFA module. REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation.
AI5 RETRIEVE THE RECORDED DTCs FROM THE BCM SELF-TEST
- Check the recorded DTCs from the BCM self-test.
- Are any DTCs present?
- Yes : For all other DTCs, REFER to MULTIFUNCTION ELECTRONIC MODULES .
  For DTC B10F1:23, GO to AI6.
- No : GO to AI9.
AI6 CHECK THE KEY-IN-IGNITION INPUT FOR AN OPEN
- Ignition OFF.
- Disconnect: BCM C2280G.
- Insert the key into the ignition lock cylinder.
- Measure the resistance between the BCM C2280G-9, circuit CDC30 (BU/GY), harness side and ground.
  
  Fig 1: Measuring Resistance Between BCM C2280G-9, Circuit CDC30 (BU/GY) And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes : GO to AI8.
- No : GO to AI7.
AI7 CHECK THE KEY-IN-IGNITION SWITCH OPERATION
- Disconnect: Key-In-Ignition Switch C2112.
- Measure the resistance between the BCM C2280G-9, circuit CDC30 (BU/GY), harness side and the key-in-ignition switch C2112-1, circuit CDC30 (BU/GY), harness side.
  
  Fig 2: Measuring Resistance Between BCM C2280G-9, Circuit CDC30 (BU/GY) And Key-In-Ignition Switch C2112-1
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes : INSTALL a new ignition switch. REFER to STEERING COLUMN SWITCHES . TEST the system for normal operation.
- No : REPAIR circuit CDC30 (BU/GY) for an open. TEST the system for normal operation.
AI8 CHECK THE KEY-IN-IGNITION GROUND CIRCUIT FOR AN OPEN
- Measure the resistance between the key-in-ignition switch C2112-2, circuit GD115 (BK/GY), harness side and ground.
  
  Fig 3: Measuring Resistance Between Key-In-Ignition Switch C2112-2, Circuit GD115 (BK/GY) And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes : GO to AI10.
- No : REPAIR circuit GD115 (BK/GY) for an open. TEST the system for normal operation.
AI9 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.
AI10 CHECK FOR CORRECT KEY-IN-IGNITION SWITCH OPERATION
- Check the key-in-ignition switch C2112 for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect the key-in-ignition switch C2112 and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes : INSTALL a new ignition switch. REFER to STEERING COLUMN SWITCHES . 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.