Transmission Temperature Sensor/Switch: Testing and Inspection

DESCRIPTION
The A/T fluid temperature sensor detects the ATF temperature and sends a signal to the A/T control unit.

Diagnostic Trouble Code (DTC) confirmation procedure
After the repair, perform the following procedure to confirm the malfunction is eliminated.




With Consult
(1) Start engine.
(2) Select "SELF-DIAG RESULTS" mode with CONSULT
(3) Drive vehicle under the following conditions: Selector lever in "D", vehicle speed higher than 10 km/h (6 MPH), throttle opening greater than 1/8 of the full open position, engine speed higher than 450 rpm and driving for more than 10 minutes.

OR




With GST
(1) Start engine.
(2) Drive vehicle under the following conditions: Selector lever in "D", vehicle speed higher than 10 km/h (6 MPH), throttle opening greater than 1/8 of the full open position, engine speed higher than 450 rpm and driving for more than 10 minutes.
(3) Select "MODE 7" with GST.

OR




No Tools
(1) Start engine.
(2) Drive vehicle under the following conditions: Selector lever in "D", vehicle speed higher than 10 km/h (6 MPH), throttle opening greater than 1/8 of the full open position, engine speed higher than 450 rpm and driving for more than 10 minutes.
(3) Perform transmission self-diagnosis.
Refer to How to Display and Read DTCs (Without Scan Tool).







DIAGNOSTIC PROCEDURE


COMPONENT INSPECTION
A/T fluid temperature sensor




- Check resistance between terminals 33 and 35 while changing temperature as shown.

Temperature °C (°F) / Resistance (Approx.)
20 (68) / 2.5 KOhms
80 (176) / 0.3 KOhms