Off-Vehicle Inspection

WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

A hot the transmission and ATF can cause severe burns. Turn off the engine and wait until they are cool before replacing ATF.

Remove the TFT sensor.
(See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR REMOVAL/INSTALLATION .)
Place the TFT sensor and a thermometer in ATF as shown in the figure, and heat the ATF gradually.

Measure the resistance between the TFT sensor terminals.

Fig 1: Measuring Resistance Between TFT Sensor Terminals

Courtesy of MAZDA MOTORS CORP.

If there is any malfunction, replace the TFT sensor. (See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR REMOVAL/INSTALLATION .)

ATF TEMPERATURE (°C {°F}) AND RESISTANCE (KILOHM) SPECIFICATION

ATF temperature (°C {°F})	Resistance (kilohm)
-20 {-4}	15.87-17.54
0 {32}	5.727-6.329
20 {68}	2.375-2.625
40 {104}	1.102-1.218
60 {140}	0.561-0.620
80 {176}	0.308-0.341
100 {212}	0.181-0.200
120 {248}	0.112-0.123
130 {266}	0.089-0.099

Install the TFT sensor.
(See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR REMOVAL/INSTALLATION .)