Related Diagnostic Procedures

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.




DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE
WITH CONSULT
(1) Turn ignition switch "ON".
(2) Select "DATA MONITOR" mode with CONSULT.
(3) Wait at least 12 seconds.

OR

WITH GST
(1) Turn ignition switch "ON" and wait at least 12 seconds.
(2) Select "MODE 3" with GST.

OR

WITH NO TOOLS
(1) Turn ignition switch "ON" and wait at least 12 seconds.
(2) Turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
(3) Perform "Diagnostic Test Mode II (Self-diagnostic results)" with ECM.

EC-TUFTS-01 Tank Fuel Temperature Sensor (DTC: 0402):

WIRING DIAGRAM




DIAGNOSTIC PROCEDURE

COMPONENT INSPECTION




Check resistance as shown in the figure.




If NG, replace tank fuel temperature sensor.