Dtc P0180 Fuel Temperature Sensor A Circuit

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
1Vd-Ftv Engine Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING GTS (FUEL TEMPERATURE)

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

CHECK HARNESS AND CONNECTOR (FUEL TEMPERATURE SENSOR - ECM)

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

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

REPLACE FUEL TEMPERATURE SENSOR

CHECK HARNESS AND CONNECTOR (FUEL TEMPERATURE SENSOR - ECM)

REPLACE ECM

BLEED AIR FROM FUEL SYSTEM

PERFORM SUPPLY PUMP INITIALIZATION

REPAIR OR REPLACE HARNESS OR CONNECTOR

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

DTC P0180 Fuel Temperature Sensor "A" Circuit

DTC P0182 Fuel Temperature Sensor "A" Circuit Low Input

DTC P0183 Fuel Temperature Sensor "A" Circuit High Input


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.
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf). Dtc P0180 Fuel Temperature Sensor A Circuit

P0180
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Ignition switch ON for 0.5 seconds
Open or short in the fuel temperature sensor circuit for 0.5 seconds (1 trip detection logic).
  1. Open or short in fuel temperature sensor circuit
  2. Fuel temperature sensor (fuel supply pump assembly)
  3. ECM

P0182
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Ignition switch ON for 0.5 seconds
Short in the fuel temperature sensor circuit for 0.5 seconds (1 trip detection logic).
  1. Short in fuel temperature sensor circuit
  2. Fuel temperature sensor (fuel supply pump assembly)
  3. ECM

P0183
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Ignition switch ON for 0.5 seconds
Open in the fuel temperature sensor circuit for 0.5 seconds (1 trip detection logic).
  1. Open in fuel temperature sensor circuit
  2. Fuel temperature sensor (fuel supply pump assembly)
  3. ECM

Related Data List
DTC No.
Data List
P0180
P0182
P0183
Fuel Temperature
HINT:
  1. If DTC P0180, P0182 and/or P0183 is stored, the following symptoms may appear:
    1. Misfire
    2. Combustion noise
    3. Black smoke
    4. Lack of power

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf). Dtc P0180 Fuel Temperature Sensor A Circuit


INSPECTION PROCEDURE

NOTICE:
  1. After replacing the ECM, the new ECM needs registration (Click here) and initialization (Click here).
  2. After replacing the fuel supply pump assembly, the ECM needs initialization (Click here).
  3. After replacing an injector assembly, the ECM needs registration (Click here).
HINT:
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.
1.READ VALUE USING GTS (FUEL TEMPERATURE)

  1. Connect the GTS to the DLC3.

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

  1. Enter the following menus: Engine and ECT / Data List / Fuel Temperature.

  1. 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
    HINT:
    1. If there is an open circuit, the GTS indicates -40°C (-40°F).
    2. If there is a short circuit, the GTS indicates 140°C (284°F) or higher.


B
Go to step 5

C
Go to step 12
A


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


    Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf). Dtc P0180 Fuel Temperature Sensor A Circuit

  1. Disconnect the fuel temperature sensor connector.

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

  1. Connect the GTS to the DLC3.

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

  1. Enter the following menus: Engine and ECT / Data List / Fuel Temperature.

  1. Read the value.

    OK:
    140°C (284°F) or higher
    Text in Illustration
    *1
    		Fuel Temperature Sensor
    *2
    		ECM
    *a
    		Front view of wire harness connector
    (to Fuel Temperature Sensor)

  1. Reconnect the fuel temperature sensor connector.



OK
Go to step 6
NG


3.CHECK HARNESS AND CONNECTOR (FUEL TEMPERATURE SENSOR - ECM)

  1. Disconnect the fuel temperature sensor connector.

  1. Disconnect the ECM connector.

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

    Standard Resistance:

    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    z65-2 (THF) - C45-116 (THF)
    		Always
    		Below 1 Ω
    z65-1 (E2) - C45-92 (E2)
    		Always
    		Below 1 Ω

    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    z65-2 (THF) - C46-116 (THF)
    		Always
    		Below 1 Ω
    z65-1 (E2) - C46-92 (E2)
    		Always
    		Below 1 Ω

  1. Reconnect the fuel temperature sensor connector.

  1. Reconnect the ECM connector.



NG
Go to step 11
OK


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

  1. Replace the ECM (Click here).



NEXT
Go to step 12

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


    Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf). Dtc P0180 Fuel Temperature Sensor A Circuit

  1. Disconnect the fuel temperature sensor connector.

  1. Connect the GTS to the DLC3.

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

  1. Enter the following menus: Engine and ECT / Data List / Fuel Temperature.

  1. Read the value.

    OK:
    -40°C (-40°F)
    Text in Illustration
    *1
    		Fuel Temperature Sensor
    *2
    		ECM

  1. Reconnect the fuel temperature sensor connector.



NG
Go to step 7
OK


6.REPLACE FUEL TEMPERATURE SENSOR

  1. Replace the fuel temperature sensor (Click here).



NEXT
Go to step 9

7.CHECK HARNESS AND CONNECTOR (FUEL TEMPERATURE SENSOR - ECM)

  1. Disconnect the fuel temperature sensor connector.

  1. Disconnect the ECM connector.

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

    Standard Resistance:

    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    z65-2 (THF) or C45-116 (THF) - Body ground
    		Always
    		10 kΩ or higher

    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    z65-2 (THF) or C46-116 (THF) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the fuel temperature sensor connector.

  1. Reconnect the ECM connector.



NG
Go to step 11
OK


8.REPLACE ECM

  1. Replace the ECM (Click here).



NEXT
Go to step 12

9.BLEED AIR FROM FUEL SYSTEM

  1. Bleed the air from the fuel system (Click here).

    HINT:
    When fuel lines are disconnected, air may enter the fuel lines, leading to engine starting trouble. Therefore, perform forced regeneration and bleed the air from the fuel lines.

NEXT


10.PERFORM SUPPLY PUMP INITIALIZATION

  1. Perform supply pump initialization (Click here).



NEXT
Go to step 12

11.REPAIR OR REPLACE HARNESS OR CONNECTOR

  1. Repair or replace the harness or connector.


NEXT


12.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

  1. Connect the GTS to the DLC3.

  1. Clear the DTCs (Click here).

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

  1. Enter the following menus: Engine and ECT / Trouble Codes.

  1. Confirm that the DTC is not output again.


NEXT

END