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Pinpoint Test Bi: DTC U3003:16

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, BATTERY MOUNTING & BATTERY CABLES Article.
  1. BI1 RECHECK THE IPC DTCs 
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: IPC Self-Test.
    • Clear the DTCs. Repeat the IPC self-test.
    • Is DTC U3003:16 still present? 
    • Yes  : GO to BI2.
    • No  : The system is operating correctly at this time. The DTC may have been set due to a previous low battery voltage condition.
  2. BI2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM 
    • Enter the following diagnostic mode on the scan tool: PCM Self-Test.
    • Carry out the PCM Key ON Engine OFF (KOEO) self-test.
    • Retrieve the continuous memory DTCs from all modules.
    • Is DTC P0620, P0622, P0625, P0626 or P065B set in the PCM? 
  3. BI3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE 
  4. BI4 CHECK THE IPC VOLTAGE PID 
    • Ignition ON.
    • Measure and record the voltage at the battery.
    • Enter the following diagnostic mode on the scan tool: IPC DataLogger.
    • Monitor the IPC voltage PID (MODULE_VOLT).
    • Is the voltage within 0.2 volt of the recorded battery voltage? 
    • Yes  : GO to  BI7.
    • No  : GO to BI5.
  5. BI5 CHECK THE IPC VOLTAGE SUPPLY 
    • Ignition OFF.
    • Disconnect: IPC C220.
    • Ignition ON.
    • Measure the voltage between the IPC C220-21, circuit SBP26 (YE/RD), harness side and ground.
      Fig 1: Measuring Voltage Between IPC C220-21, Circuit SBP26 (YE/RD) And Ground
      G06257862Courtesy of FORD MOTOR CO.
    • Is the voltage within 0.2 volt of the recorded battery voltage? 
    • Yes  : GO to BI6.
    • No  : REPAIR circuit SBP26 (YE/RD) for high resistance. CLEAR the DTC. REPEAT the self-test.
  6. BI6 CHECK THE IPC GROUND CIRCUIT 
    • Ignition OFF.
    • Disconnect: Negative Battery Cable.
    • Measure the resistance between the IPC C220-5, circuit GD114 (BK/BU), harness side and ground.
      Fig 2: Measuring Resistance Between IPC C220-5, Circuit GD114 (BK/BU) And Ground
      G06257863Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to BI7.
    • No  : REPAIR circuit GD114 (BK/BU) for high resistance. CLEAR the DTCs. REPEAT the self-test.
  7. BI7 CHECK FOR CORRECT IPC OPERATION 
    • Disconnect the IPC connector.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect the IPC 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 IPC. REFER to INSTRUMENT PANEL CLUSTER (IPC) . 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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