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:
DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE
NOTE: If "DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE" has been previously conducted, always turn ignition switch "OFF" and wait at least 5 seconds before conducting the next test.
With Consult
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.
NOTE: If "COOLAN TEMP/S" is already less than 60 °C (140 °F) before step 4), the result will be OK.
If "COOLAN TEMP/S" is above 60 °C (140 °F), go to the following step.
4. Cool engine down until "COOLAN TEMP/S" is less than 60 °C (140 °F).
5. Wait at least 10 seconds.
6. If 1st trip DTC is detected, go to "Diagnostic Procedure" below.
OR
With Generic Scan Tools
1. Turn ignition switch "ON" and wait at least 10 seconds.
2. Select "MODE 7" with GST.
If the result is NG, go to "Diagnostic Procedure" below.
If the result is OK, go to following step.
3. Select "MODE 1" with GST and check for the engine coolant temperature.
4. Cool engine down until the engine coolant temperature is less than 60 °C (140 °F). If the temperature is already less than 60 °C (140 °F) before step 4), the result will be OK.
5. Wait at least 10 seconds.
6. Select "MODE 7" with GST.
7. If 1st trip DTC is detected, go to "Diagnostic Procedure" below.
WIRING DIAGRAM
EC-FTTS-01:
EC-FTTS-01 Connector View:
DIAGNOSTIC PROCEDURE
COMPONENT INSPECTION
Fuel Tank Temperature Sensor:
