Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - 1VD-FTV ENGINE CONTROL
READ VALUE USING INTELLIGENT TESTER (FUEL TEMPERATURE)
READ VALUE USING INTELLIGENT TESTER (CHECK FOR OPEN IN WIRE HARNESS)
CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE FUEL TEMPERATURE SENSOR
CHECK HARNESS AND CONNECTOR (FUEL TEMPERATURE SENSOR - ECM)
CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM
READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT IN WIRE HARNESS)
REPLACE FUEL TEMPERATURE SENSOR
CHECK HARNESS AND CONNECTOR (FUEL TEMPERATURE SENSOR - ECM)
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 of 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 and determines if there are errors.
| 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). | Open or short in fuel temperature sensor circuit Fuel temperature sensor ECM |
| 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). | Short in fuel temperature sensor circuit Fuel temperature sensor ECM |
| 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). | Open in fuel temperature sensor circuit Fuel temperature sensor ECM |
| DTC No. | Data List |
| P0180 | Fuel Temp |
| P0182 | |
| P0183 |
- HINT:
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- After replacing the ECM, the new ECM needs registration () and initialization ().
- HINT:
| 1.READ VALUE USING INTELLIGENT TESTER (FUEL TEMPERATURE) |
Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON and turn the tester on.
Enter the following menus: Powertrain / Engine / Data List / Fuel Temp.
Read the value.
- OK:
- Same value as the actual fuel temperature.
| Result | Proceed to |
| -40°C (-40°F) | A |
| 140°C (284°F) or more | B |
| OK (Same as actual fuel temperature) | C |
- HINT:
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| A | |
| 2.READ VALUE USING INTELLIGENT TESTER (CHECK FOR OPEN IN WIRE HARNESS) |
Disconnect the fuel temperature sensor connector.
Connect terminals 2 (THF) and 1 (E2) of the fuel temperature sensor connector.
Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON and turn the tester on.
Enter the following menus: Powertrain / Engine / Data List / Fuel Temp.
Read the value.
- OK:
- 140°C (284°F) or higher
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| OK | |
| 3.CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE FUEL TEMPERATURE SENSOR |
Replace the fuel temperature sensor ().
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| 4.CHECK HARNESS AND CONNECTOR (FUEL TEMPERATURE SENSOR - ECM) |
Disconnect the fuel temperature sensor connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance (Check for Open):
for LHD Tester Connection Condition Specified Condition z65-2 (THF) - C45-116 (THF) Always Below 1 Ω z65-1 (E2) - C45-75 (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) - C46-75 (E2) Always Below 1 Ω
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| OK | |
| 5.CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM |
Replace the ECM ().
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| 6.READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT IN WIRE HARNESS) |
Disconnect the fuel temperature sensor connector.
Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON and turn the tester on.
Enter the following menus: Powertrain / Engine / Data List / Fuel Temp.
Read the value.
- OK:
- -40°C (-40°F)
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| OK | |
| 7.REPLACE FUEL TEMPERATURE SENSOR |
Replace the fuel temperature sensor ().
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| 8.CHECK HARNESS AND CONNECTOR (FUEL TEMPERATURE SENSOR - ECM) |
Disconnect the fuel temperature sensor connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance (Check for Short):
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
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| OK | |
| 9.REPLACE ECM |
Replace the ECM ().
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| 10.REPAIR OR REPLACE HARNESS OR CONNECTOR |
| NEXT | |
| 11.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED |
Connect the intelligent tester to the DLC3.
Clear the DTCs ().
Turn the ignition switch off.
Turn the ignition switch to ON for 1 second.
Enter the following menus: Powertrain / Engine / DTC.
Confirm that the DTC is not output again.
| NEXT | ||
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