Dtc P0180 Fuel Temperature Sensor A Circuit

Двигатель. Toyota Rav4. Aca30, 33, 38 Ala30
Система Управления Двигателем 2Ad-Fhv. Toyota Rav4. Aca30, 33, 38 Ala30

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (FUEL TEMPERATURE SENSOR)

READ VALUE USING INTELLIGENT TESTER (CHECK FOR OPEN IN WIRE HARNESS)

CHECK WIRE HARNESS (FUEL TEMPERATURE SENSOR - ECM)

READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT IN WIRE HARNESS)

CHECK WIRE HARNESS (FUEL TEMPERATURE SENSOR - ECM)

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 (see below). The 5 V power source voltage in the ECM is applied to the fuel temperature sensor from terminal THF via resistor R.
The resistor R and fuel temperature sensor are connected in series. When the resistance value of the fuel temperature sensor changes due to a change of fuel temperature, the voltage at terminal THF also changes. Based on this signal, the ECM corrects the pressure control compensation of the supply pump and determines errors.
Toyota Rav4. Aca30, 33, 38 Ala30.Система Управления Двигателем 2Ad-Fhv.Система Ecd. Dtc P0180 Fuel Temperature Sensor A Circuit

DTC No.
DTC Detection Condition
Trouble Area
P0180
Open or short in 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
  3. ECM
P0182
Short in 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
  3. ECM
P0183
Open in 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
  3. ECM

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Ala30.Система Управления Двигателем 2Ad-Fhv.Система Ecd. Dtc P0180 Fuel Temperature Sensor A Circuit


INSPECTION PROCEDURE

ПРИМЕЧАНИЕ:
After replacing the ECM, the new ECM needs registration (see page RAV4_ACA30 RM000000TJ4007X.html) and initialization (see page RAV4_ACA30 RM000000TIN007X.html).
УКАЗАНИЕ:
If DTCs relating to different systems are output, and they share terminal E2 as their ground, check this ground circuit first.
1.READ VALUE USING INTELLIGENT TESTER (FUEL TEMPERATURE SENSOR)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG) and turn the tester ON.

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

  1. Read the value.

    Standard value:
    Same value as the actual fuel temperature
    Result:
    Temperature Displayed
    		Proceed to
    -40°C (-40°F)
    		A
    140°C (284°F) or more
    		B
    OK (Same as actual fuel temperature)
    		C
    УКАЗАНИЕ:
    1. If there is an open circuit, the tester indicates -40°C (-40°F).
    2. If there is a short circuit, the tester indicates 140°C (284°F) or more.


B
Перейдите к шагу 4

C
CHECK FOR INTERMITTENT PROBLEMS
A


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


    Toyota Rav4. Aca30, 33, 38 Ala30.Система Управления Двигателем 2Ad-Fhv.Система Ecd. Dtc P0180 Fuel Temperature Sensor A Circuit

  1. Disconnect the B47 fuel temperature sensor connector.

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

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG) and turn the tester ON.

  1. Enter the following menu: Powertrain / Engine and ECT / Data List / Fuel Temp.

  1. Read the value.

    Standard value:
    140°C (284°F) or more

  1. Reconnect the fuel temperature sensor connector.



OK
CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE FUEL TEMPERATURE SENSOR
NG


3.CHECK WIRE HARNESS (FUEL TEMPERATURE SENSOR - ECM)


    Toyota Rav4. Aca30, 33, 38 Ala30.Система Управления Двигателем 2Ad-Fhv.Система Ecd. Dtc P0180 Fuel Temperature Sensor A Circuit

  1. Disconnect the B47 fuel temperature sensor connector.

  1. Disconnect the B32 ECM connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    B47-2 - B32-112 (THF)
    		Below 1 Ω
    B47-1 - B32-89 (ETHF)
    		Below 1 Ω

  1. Reconnect the fuel temperature sensor.

  1. Reconnect the ECM connector.



OK
REPAIR OR REPLACE HARNESS AND CONNECTOR
NG

CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM

4.READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT IN WIRE HARNESS)


    Toyota Rav4. Aca30, 33, 38 Ala30.Система Управления Двигателем 2Ad-Fhv.Система Ecd. Dtc P0180 Fuel Temperature Sensor A Circuit

  1. Disconnect the B47 fuel temperature sensor connector.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG) and turn the tester ON.

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

  1. Read the value.

    Standard value:
    -40°C (-40°F) or more.

  1. Reconnect the fuel temperature sensor connector.



OK
REPLACE FUEL TEMPERATURE SENSOR
NG


5.CHECK WIRE HARNESS (FUEL TEMPERATURE SENSOR - ECM)


    Toyota Rav4. Aca30, 33, 38 Ala30.Система Управления Двигателем 2Ad-Fhv.Система Ecd. Dtc P0180 Fuel Temperature Sensor A Circuit

  1. Disconnect the B47 fuel temperature sensor connector.

  1. Disconnect the B32 ECM connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    B47-2 or B32-112 (THF)- Body ground
    		10 kΩ or higher

  1. Reconnect the fuel temperature sensor connector.

  1. Reconnect the ECM connector.



OK
REPAIR OR REPLACE HARNESS AND CONNECTOR
NG

REPLACE ECM