LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2023 >> Escape Base, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1127 (Electric Powertrain Control - 3.3L DURATEC-V6 - Hybrid (BP) (Diagnosis & Testing - Removal & Installation)) >> Diagnosis And Testing >> Electric Powertrain Control >> Pinpoint Tests >> Pinpoint Test T: P0A3C:94

Pinpoint Test T: P0A3C:94

WARNING: This page is about a different car, the 2022 Ford Police Interceptor Utility and 2022 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Normal Operation and Fault Conditions 

    Refer to Electric Powertrain Control - System Operation and Component Description .

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    SOBDMC P0A3C:94 Drive Motor "A" Inverter Over Temperature: Unexpected Operation This DTC sets when the module senses an elevated internal temperature

    Possible Sources 

    • Wiring, terminals or connectors
    • Electric powertrain cooling concern
    • Temperature sensor
    • Inverter System Controller (ISC)

  2. T1 CHECK THE COOLING FAN OPERATION

    NOTE: Verify cooling fan operation before proceeding with this test

    • Verify the cooling fan operates.

    Does the cooling fan operate? 

    Yes  GO to  T2
    No  Refer to Electric Powertrain Cooling - Overview .

  3. T2 CHECK THE COOLANT LEVEL

    • Inspect the coolant.

    Is the coolant at the correct level? 

    Yes  GO to  T3
    No  Refer to Cooling System Filling and Bleeding .

  4. T3 INSPECT THE COOLANT FOR CONTAMINATION

    • Inspect the coolant.

    Is the coolant contaminated? 

    Yes  Refer to Cooling System Filling and Bleeding .
    No  GO to  T4

  5. T4 INSPECT THE RADIATOR

    • Inspect the radiator for any obstruction.

    Is the radiator obstructed? 

    Yes  REPAIR as necessary.
    No  GO to  T5

  6. T5 INSPECT THE MOTOR ELECTRONICS COOLING SYSTEM HOSES

    • Inspect the motor electronics cooling system hoses.

    Is a concern present? 

    Yes  REPAIR as necessary.
    No  GO to  T6

  7. T6 INSPECT FOR INTERNAL AND EXTERNAL COOLANT LEAKS

    • Inspect the coolant system for leaks.

    Are any leaks present? 

    Yes  REPAIR as necessary.
    No  GO to  T7

  8. T7 PERFORM THE BECM (BATTERY ENERGY CONTROL MODULE) SELF-TEST

    • Ignition ON.

    • Using a diagnostic scan tool, perform the BECM self-test.

    Are any cooling system DTCs reported? 

    Yes  DIAGNOSE the BECMDTCs.
    No  GO to  T8

  9. T8 CHECK FOR INVERTER SYSTEM CONTROLLER (ISC) TEMPERATURE SENSOR CORRELATION

    • Cold soak the vehicle at ambient temperature for at least 6 hours.

    • Ignition ON.

    • Access the SOBDMC and monitor the G_PHTMP (Deg C) PID

    • Road test the vehicle while monitoring the PID.

    Does the temperature PID indicate greater than 115deg.C (239deg.F)? 

    Yes  Refer to Electric Powertrain Cooling .
    No  GO to  T9

  10. T9 CHECK FOR CORRECT INVERTER SYSTEM CONTROLLER (ISC) OPERATION

    • Ignition OFF.

    • Disconnect and inspect all Inverter System Controller (ISC) connectors.

    • Repair:

      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary

    • Reconnect the Inverter System Controller (ISC) connectors. Make sure they seat and latch correctly.

    • Ignition ON.

    • Clear the Inverter System Controller (ISC) DTCs.

    • Using a diagnostic scan tool, run the Inverter System Controller (ISC) self-test.

    Is DTC P0A3C present? 

    Yes  CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new Inverter System Controller (ISC). Refer to Inverter System Controller [SOBDMC]  .
    No  The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.
scientia non olet · About LEMON Manuals