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ECD SYSTEM, Diagnostic DTC:P0180, P0182, P0183

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DTC Code DTC Name
P0180 Fuel Temperature Sensor "A" Circuit
P0182 Fuel Temperature Sensor "A" Circuit Low Input
P0183 Fuel Temperature Sensor "A" Circuit High Input
Table 1. *1 (Fig. 1) *2 Resistance kΩ *3 Acceptable *4 Temperature °C (°F)
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DESCRIPTION

The fuel temperature sensor monitors the fuel temperature. The fuel temperature sensor has a thermistor that varies its resistance depending on the fuel temperature. When the fuel temperature is low, the resistance of the thermistor is high. When the temperature is high, the resistance is low. The variations of resistance are communicated to the ECM as changes of voltage (See Fig. 1).

The fuel temperature sensor is connected to the ECM. The 5 V power source voltage in the ECM is applied to the fuel temperature sensor from terminal THF via resistor R.

Resistor R and the fuel temperature sensor are connected in series. When the resistance value of the fuel temperature sensor changes due to a change in fuel temperature, the voltage at terminal THF also changes. Based on this signal, the ECM corrects the pressure control compensation of the fuel supply pump assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0180 Fuel Temperature Sensor "A" Circuit Open or short in the fuel temperature sensor circuit for 0.5 seconds (1 trip detection logic).

  • Open or short in fuel temperature sensor circuit

  • Fuel temperature sensor (fuel supply pump assembly)

  • ECM

 Comes on DTC stored
P0182 Fuel Temperature Sensor "A" Circuit Low Input Short in the fuel temperature sensor circuit for 0.5 seconds (1 trip detection logic).

  • Short in fuel temperature sensor circuit

  • Fuel temperature sensor (fuel supply pump assembly)

  • ECM

 Comes on DTC stored
P0183 Fuel Temperature Sensor "A" Circuit High Input Open in the fuel temperature sensor circuit for 0.5 seconds (1 trip detection logic).

  • Open in fuel temperature sensor circuit

  • Fuel temperature sensor (fuel supply pump assembly)

  • ECM

 Comes on DTC stored
Table 2. Related Data List
DTC No. Data List
P0180 Fuel Temp
P0182
P0183
Tip:

  • If DTC P0180, P0182 and/or P0183 is stored, the following symptoms may appear:


    • Misfire

    • Combustion noise

    • Black smoke

    • Lack of power

  • When DTC P0180, P0182 and/or P0183 is stored, check the intake air temperature by entering the following menus: Powertrain / Engine / Data List / Fuel Temp.

    Table 3. Reference
    Temperature Displayed Malfunction
    -40°C (-40°F) Open circuit
    140°C (284°F) or higher Short circuit
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CONFIRMATION DRIVING PATTERN

Table 4. P0180, P0182, P0183
DTC Detection Drive Pattern Ignition switch to ON for 0.5 seconds
Table 5. *a Fuel Temperature Sensor
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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

After replacing the ECM, the new ECM needs registration (See page ) and initialization (Click here).

Tip:

Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

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PROCEDURE


  1. Click here

    READ VALUE USING GTS (FUEL TEMPERATURE)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Enter the following menus: Powertrain / Engine / Data List / Fuel Temp.


      1. Powertrain > Engine > Data List
        Tester Display
        Fuel Temperature




    4. Read the value.

      OK
      Same as the actual fuel temperature
      Result
      Result Proceed to
      -40°C (-40°F) A
      140°C (284°F) or higher B
      OK (Same as actual fuel temperature) C
      Tip:

      • If there is an open circuit, the GTS indicates -40°C (-40°F).

      • If there is a short circuit, the GTS indicates 140°C (284°F) or higher.


  2. Click here

    READ VALUE USING GTS (CHECK FOR OPEN IN WIRE HARNESS)


    1. B0028XGC24
      *1 Fuel Temperature Sensor
      *2 ECM
      *a

      Front view of wire harness connector

      (to Fuel Temperature Sensor)

      Disconnect the fuel temperature sensor connector.

    2. Connect terminals 2 and 1 of the fuel temperature sensor connector.

    3. Connect the GTS to the DLC3.

    4. Turn the ignition switch to ON and turn the GTS on.

    5. Enter the following menus: Powertrain / Engine / Data List / Fuel Temp.


      1. Powertrain > Engine > Data List
        Tester Display
        Fuel Temperature




    6. Read the value.

      OK
      140°C (284°F) or higher

    7. Reconnect the fuel temperature sensor connector.

      Result
      Proceed to
      OK
      NG

  3. Click here

    REPLACE FUEL SUPPLY PUMP ASSEMBLY (FUEL TEMPERATURE SENSOR)


    1. Replace the fuel supply pump assembly.

      Click here

      Result
      Proceed to
      NEXT

  4. Click here

    CHECK HARNESS AND CONNECTOR (FUEL TEMPERATURE SENSOR - ECM)


    1. Disconnect the fuel temperature sensor connector.

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      C78-2 - C55-29 (THF) Always Below 1 Ω
      C78-1 - C55-28 (E2) Always Below 1 Ω

    4. Reconnect the fuel temperature sensor connector.

    5. Reconnect the ECM connector.

      Result
      Proceed to
      OK
      NG

  5. Click here

    CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM.


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

  6. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR


    1. Repair or replace the harness or connector.

      Result
      Proceed to
      NEXT

  7. Click here

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Clear the DTCs.


      1. Powertrain > Engine > Clear DTCs


    3. Turn the ignition switch to ON for 1 second or more.

    4. Enter the following menus: Powertrain / Engine / Trouble Codes.


      1. Powertrain > Engine > Trouble Codes


    5. Confirm that the DTC is not output again.

      Result
      Proceed to
      NEXT

    • NEXT

      END

  8. Click here

    READ VALUE USING GTS (CHECK FOR SHORT IN WIRE HARNESS)


    1. B0026NRC02
      *1 Fuel Temperature Sensor
      *2 ECM

      Disconnect the fuel temperature sensor connector.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON and turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / Fuel Temp.


      1. Powertrain > Engine > Data List
        Tester Display
        Fuel Temperature




    5. Read the value.

      OK
      -40°C (-40°F)

    6. Reconnect the fuel temperature sensor connector.

      Result
      Proceed to
      OK
      NG

  9. Click here

    REPLACE FUEL SUPPLY PUMP ASSEMBLY (FUEL TEMPERATURE SENSOR)


    1. Replace the fuel supply pump assembly.

      Click here

      Result
      Proceed to
      NEXT

  10. Click here

    BLEED AIR FROM FUEL SYSTEM


    1. Bleed the air from the fuel system.

      Click here

      Result
      Proceed to
      NEXT

  11. Click here

    PERFORM FUEL SUPPLY PUMP INITIALIZATION


    1. Perform fuel supply pump initialization.

      Click here

      Result
      Proceed to
      NEXT

  12. Click here

    CHECK HARNESS AND CONNECTOR (FUEL TEMPERATURE SENSOR - ECM)


    1. Disconnect the fuel temperature sensor connector.

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      C78-2 or C55-29 (THF) - Body ground Always 10 kΩ or higher

    4. Reconnect the fuel temperature sensor connector.

    5. Reconnect the ECM connector.

      Result
      Proceed to
      OK
      NG

  13. Click here

    REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT