P0180

Reference Data:

Component Description
The fuel tank temperature sensor is used to detect the fuel temperature inside the fuel tank. The sensor modifies a voltage signal from the ECM. The modified signal returns to the ECM as the fuel temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.

CAUTION
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

On Board Diagnosis Logic:

DTC Confirmation Procedure

NOTE: If "DTC Confirmation Procedure" has been previously conducted, always turn ignition switch "OFF" and wait at least 5 seconds before conducting the next test.

With CONSULT-II
1. Turn ignition switch "ON".
2. Select "DATA MONITOR" mode with CONSULT-II.




3. Wait at least 10 seconds.
If the result is NG, go to "Diagnostic Procedure" below.
If the result is OK, go to following step.

4. Check "COOLAN TEMP/S" value.

If "COOLAN TEMP/S" is less than 60 °C (140 °F), the result will be OK.

If "COOLAN TEMP/S" is above 60 °C (140 °F), go to the following step.

5. Cool engine down until "COOLAN TEMP/S" is less than 60 °C (140 °F).
6. Wait at least 10 seconds.
7. If 1st trip DTC is detected, go to "Diagnostic Procedure" below.

With GST
Follow the procedure "With CONSULT-II".

EC-TFTS-01:

EC-TFTS-01 Connector View:

Wiring Diagram

Steps 1 - 2:

Steps 3 - 6:

Diagnostic Procedure

Component Inspection







FUEL TANK TEMPERATURE SENSOR
Check resistance by heating with hot water or heat gun as shown in the figure.

If NG, replace fuel tank temperature sensor.