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Pinpoint Test AJ: DTC U2472 - Unexpected Ignition State

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. AJ1 CHECK THE INSTRUMENT CLUSTER (IC) RUN/START VOLTAGE SUPPLY 
    • Key in OFF position.
    • Disconnect: Instrument Cluster (IC) C220
      • Fig 1: Checking Instrument Cluster (IC) Run/Start Voltage Supply - OFF Position
      GF0047018Courtesy of FORD MOTOR CO.
    • Measure the voltage between the instrument cluster (IC) C220-14, circuit CBP29 (WH/VT), harness side and ground.
    • Key in ON position.
      • Fig 2: Checking Instrument Cluster (IC) Run/Start Voltage Supply - ON Position
      GF0047018Courtesy of FORD MOTOR CO.
    • Measure the voltage between the instrument cluster (IC) C220-14, circuit CBP29 (WH/VT), harness side and ground.
    • Key in START position.
      • Fig 3: Checking Instrument Cluster (IC) Run/Start Voltage Supply - START Position
      GF0047018Courtesy of FORD MOTOR CO.
    • Measure the voltage between the instrument cluster (IC) C220-14, circuit CBP29 (WH/VT), harness side and ground.
    • Is the voltage 0 volts in the OFF position and greater than 10 volts in the RUN and START positions? 
    1. YES  : Go to  AJ2.
    2. NO  : VERIFY the SJB fuse 29 (5A) are OK. If OK, REPAIR the circuit in question. TEST the system for normal operation.
  2. AJ2 CHECK THE INSTRUMENT CLUSTER (IC) DTCs 
    • Repeat the instrument cluster (IC) self-test.
    • Clear the DTCs.
    • Is DTC U2472 still present? 
    1. YES  : Go to  AJ3.
    2. NO  : The system is operating correctly at this time. The DTC may have been set due to high network traffic.
  3. AJ3 CHECK THE SJB INPUT PIDs FROM THE IGNITION SWITCH 
    • Enter the following diagnostic mode on the diagnostic tool: SJB DataLogger
    • Select and monitor the ignition switch ACC (IGN_A_ECU), OFF (IGN_O_ECU), RUN (IGN_R_ECU) and START (IGN_S_ECU) PIDs while cycling the ignition switch from ACC, OFF, RUN and START.
    • Do the SJB PIDs match the ignition switch position? 
    1. YES  : Go to  AJ4.
    2. NO  : REFER to STEERING COLUMN SWITCHES article to diagnose the ignition switch outputs to the SJB.
  4. AJ4 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? 
    1. YES  : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES article. TEST the system for normal operation.
    2. 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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