Pinpoint Test B: Transmission Fluid Temperature (TFT) Sensor

WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The transmission control module (TCM) is integrated into the mechatronic assembly. If installing a new transaxle or a mechatronic assembly, the TCM will need to be checked and recalibrated (reflashed) to the latest level calibration available.

B1 ELECTRONIC DIAGNOSTICS
- Connect the scan tool.
- Check to make sure the transaxle harness connector is fully seated, pins are fully engaged in connector and in good condition before proceeding.
- Key in ON position.
- Enter the following diagnostic mode on the scan tool: PIDs: Diagnostic Data Link, TFT.
- Does the vehicle enter TFT PID?
Yes: GO to B2.

No: REPEAT procedure to enter PID. If vehicle did not enter PID, REFER to INTRODUCTION - GASOLINE article .
B2 TEMPERATURE SIGNAL CHECK
- Key in ON position.
- Enter the following diagnostic mode on the scan tool: TFT.
- Monitor the TFT PID. The temperature value should be within -55°C to 175°C (-65°F to 347°F).
- Is the TFT voltage within specified range?
Yes: GO to B3.

No: INSTALL a new mechatronic assembly. REFER to MECHATRONIC ASSEMBLY . (Refer to the NOTE preceding this pinpoint test.)
B3 WARM-UP/COOL-DOWN CYCLE
- While monitoring PID: TFT, carry out the following test: If transaxle is cold, run transaxle to warm it up. If transaxle is warm, allow transaxle to cool down.
- Does the TFT PIDs increase as the transaxle is warmed up or decrease as the transaxle is cooled.
Yes: CLEAR all DTCs. ROAD TEST to verify if concern is still present. If DTC P0218 is present, see diagnostic routine other concerns - overheating. REFER to DIAGNOSIS BY SYMPTOM . If concern is still present or reappears, INSTALL a new mechatronic assembly.

No: INSTALL a new mechatronic assembly. REFER to MECHATRONIC ASSEMBLY . (Refer to the NOTE preceding this pinpoint test.)