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Home >> Ford >> 2023 >> Explorer XLT, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 965 (Engine Cooling - 3.3L DURATEC-V6 - Hybrid (BP)) >> Diagnosis And Testing >> Engine Cooling >> Pinpoint Tests >> Pinpoint Test E: Engine Coolant Temperature Sensor 3

Pinpoint Test E: Engine Coolant Temperature Sensor 3

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. Refer to ELECTRONIC ENGINE CONTROLS - 3.3L TIVCT for schematic and connector information.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    PCM P01E5:00 Engine Coolant Temperature Sensor 3 Circuit Low: No Sub Type Information This DTC sets when the PCM senses low voltage on the ECT sensor 3 circuit, indicating a short to ground.
    PCM P01E4:00 Engine Coolant Temperature Sensor 3 Circuit Range/Performance: No Sub Type Information This DTC sets when the PCM senses voltage out of range on the ECT sensor 3 circuit.
    PCM P01E6:00 Engine Coolant Temperature Sensor 3 Circuit High: No Sub Type Information This DTC sets when the PCM senses high voltage on the ECT sensor 3 circuit, indicating a short to voltage.

    Possible Sources 

    • Wiring, terminals or connectors
    • ECT sensor 3
    • PCM

    WARNING: To prevent the risk of high-voltage shock, always follow precisely all warnings and service instructions, including instructions to depower the system. The high-voltage system utilizes approximately 300 volts DC, provided through high-voltage cables to its components and modules. The high-voltage cables and wiring are identified by orange harness tape or orange wire covering. All high-voltage components are marked with high-voltage warning labels with a high-voltage symbol. Failure to follow these instructions may result in serious personal injury or death.
    NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
    NOTE: Before performing this pinpoint test, ensure the high voltage battery is at least 50 % charged. For charging information, refer to the High Voltage Battery, Mounting and Cables article .

  2. E1 CHECK THE COOLANT HOSE ROUTING

    NOTE: Routing of the coolant hoses is critical to proper engine cooling system operation.

    • Ignition OFF.

    • Check the cabin coolant heater system hose routing. Pay close attention to the diverter valve hose routing and the top and bottom ports of the bulkhead. View the system diagrams. Refer to the appropriate Engine Cooling Description and Operation procedure.

    Are the coolant hoses routed correctly? 

    Yes  CLEAR all Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules. TEST system for normal operation. If the concern is still present, GO to  E2
    No  CORRECT the coolant hose routing. Refer to the appropriate Engine Cooling Description and Operation procedure.

  3. E2 CHECK THE ECT (ENGINE COOLANT TEMPERATURE) SENSOR 3 CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect ECT Sensor 3 C1015 .

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1015-1
      GFD658367Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is there any voltage present? 

    Yes  REPAIR the circuit in question.
    No  GO to  E3

  4. E3 CHECK THE ECT (ENGINE COOLANT TEMPERATURE) SENSOR 3 CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.

    • Disconnect joint connector C1193 .

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1015-1
      GFD658368Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1015-2
      GFD658368Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  E4
    No  REPAIR the circuit in question.

  5. E4 CHECK THE ECT (ENGINE COOLANT TEMPERATURE) SENSOR 3 CIRCUITS FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1015-1
      GFD658368Courtesy of FORD MOTOR COMPANY
      		 C175B-24
      C1015-2
      GFD658368Courtesy of FORD MOTOR COMPANY
      		 C1193-5

    Are the resistances less than 3 ohms? 

    Yes  GO to  E5
    No  REPAIR the circuit in question.

  6. E5 CHECK THE ECT (ENGINE COOLANT TEMPERATURE) SENSOR 3 CIRCUITS FOR A SHORT TOGETHER

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1015-1
      GFD658368Courtesy of FORD MOTOR COMPANY
      		 C1015-2

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  E6
    No  REPAIR the circuits.

  7. E6 CHECK FOR CORRECT POWERTRAIN CONTROL MODULE (PCM) OPERATION

    • Ignition OFF.

    • Disconnect and inspect the PCM connectors.

    • Repair:

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

    • Reconnect the PCM connectors. Make sure they seat and latch correctly.

    • Operate the system and verify the concern is still present.

    Is the concern still 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 PCM. Refer to POWERTRAIN CONTROL MODULE (PCM) .
    No  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
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