With Generic Scan Tool

COMPONENT DESCRIPTION
The tank fuel 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.


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 Generic Scan Tool
(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".
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 90°C (194°F). If the temperature is already less than 90°C (194°F) before step 4), the result will be OK.
(5) Wait at least 10 seconds.
(6) Select "MODE 7" with GST.






Electrical Diagrams






Circuit Connectors






DIAGNOSTIC PROCEDURE


COMPONENT INSPECTION
Tank fuel temperature sensor






Check resistance as shown in the figure.






If NG, replace tank fuel temperature sensor.