Pinpoint Test Be: DTC U2472

WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

BE1 CHECK THE IC RUN/START VOLTAGE SUPPLY CIRCUIT FOR VOLTAGE WITH THE IGNITION SWITCH IN THE OFF POSITION
- Ignition OFF.
- Disconnect: IC C220.
- Measure the voltage between the IC C220-20, circuit CBP29 (WH/VT), harness side and ground with the ignition switch in the OFF position.
  
  Fig 1: Measuring Voltage Between IC C220-20, Circuit CBP29 (WH/VT), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is any voltage present?
- Yes: GO to BE2 .
- No: GO to BE3.
BE2 CHECK THE IC RUN/START VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE
- Disconnect: Ignition Switch C250.
- Measure the voltage between the IC C220-20, circuit CBP29 (WH/VT), harness side and ground.
  
  Fig 2: Measuring Voltage Between IC C220-20, Circuit CBP29 (WH/VT), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is any voltage present?
- Yes: REPAIR circuit CBP29 (WH/VT) for a short to voltage. CLEAR the DTCs. REPEAT the self-test.
- No: REFER to STEERING COLUMN SWITCHES to diagnose the ignition switch.
BE3 CHECK THE IC RUN/START VOLTAGE SUPPLY CIRCUIT FOR VOLTAGE WITH THE IGNITION SWITCH IN THE ACC POSITION
- Ignition In ACC.
- Measure the voltage between the IC C220-20, circuit CBP29 (WH/VT), harness side and ground with the ignition switch in the ACC position.
  
  Fig 3: Measuring Voltage Between IC C220-20, Circuit CBP29 (WH/VT), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is any voltage present?
- Yes: REFER to STEERING COLUMN SWITCHES to diagnose the ignition switch.
- No: GO to BE4 .
BE4 CHECK THE IC VOLTAGE INPUT WITH THE IGNITION SWITCH IN THE ON POSITION
- Ignition ON.
- Measure the voltage between the IC C220-20, circuit CBP29 (WH/VT), harness side and ground with the ignition switch in the ON position.
  
  Fig 4: Measuring Voltage Between IC C220-20, Circuit CBP29 (WH/VT), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
- Yes: GO to BE5 .
- No: REFER to STEERING COLUMN SWITCHES to diagnose the ignition switch.
BE5 CHECK THE SJB INPUT PIDs FROM THE IGNITION SWITCH
- Enter the following diagnostic mode on the scan tool: SJB DataLogger.
- Monitor the SJB ignition switch accessory (IGN_A_ECU), off (IGN_O_ECU), run (IGN_R_ECU), and start (IGN_S_ECU) while cycling the ignition switch from ACC to OFF, RUN and START.
- Do the SJB PIDs match the ignition switch positions?
- Yes: GO to BE6 .
- No: REFER to STEERING COLUMN SWITCHES to diagnose the ignition switch outputs to the SJB .
BE6 RECHECK THE IC DTCs
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: IC Self-Test.
- Clear all DTCs. Repeat the IC self-test.
- Is DTC U2472 still present?
- Yes: GO to BE7 .
- No: GO to BE8.
BE7 CHECK FOR CORRECT SJB OPERATION
- Disconnect all the SJB connectors.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect all the SJB connectors and make sure they seat correctly.
- Operate the system and verify that the concern is still present.
- Is the concern still present?
- Yes: INSTALL a new SJB . 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. CLEAR the DTCs. REPEAT the self-test.
BE8 CHECK FOR CORRECT IC OPERATION
- Disconnect the IC connector.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect the IC connector 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 IC . REFER to INSTRUMENT CLUSTER (IC) . 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. CLEAR the DTCs. REPEAT the self-test.