TE3 - Check TFT Sensor Resistance Change As Fluid Temp Varies

- Key "OFF".

- Breakout box installed, Powertrain Control Module (PCM) disconnected.

- Key "ON", engine "OFF".

- Verify that transmission fluid pan is warm to the touch.

IF IT IS TOO HOT TO TOUCH:

- Measure and record Transmission Fluid Temperature (TFT) sensor resistance between TFT test pin 49 and test pin 46 at breakout box, then let transmission cool down and repeat measurement. The last resistance measurement should be greater than the first.

IF IT IS COLD:

- Measure and record the TFT sensor resistance between TFT test pin 49 and test pin 46 at the breakout box, then reconnect PCM and drive vehicle for short time to elevate oil temperature. Disconnect PCM and repeat the measurements at the breakout box. The last resistance should be less than the first.

- Did resistance measurement differ and was last measurement within specifications?

Refer to applicable chart for the resistance specifications. TE - Sensor Data

Yes -- Replace PCM. Remove breakout box. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)

No -- Remove breakout box. Reconnect PCM.

Refer to Transmission and Drivetrain for TFT sensor service.