Transmission Temperature Sensor/Switch: Testing and Inspection

Transmission Fluid Temperature Sensor G93, Checking

Special tools, testers and auxiliary items required
- Multimeter
- Wiring diagram

Requirements
- The Transmission Control Module (TCM) J217 fuse OK.
- The battery voltage must be at least 12.5 Volts.
- All electrical consumers must be switched off.
- The parking brake must be engaged.
- The selector lever must be in the "P" position.
- The Ground (GND) connections to transmission must be OK.
- Ignition switched off.

Test procedure
- Perform a preliminary check to verify the customers complaint.

Start diagnosis







- Disconnect the Transmission Fluid Temperature Sensor G93 electrical harness connector - 1 -.
- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
- Repair any damage found to the electrical harness connector.

If the electrical harness connector is OK:

Checking resistance







- Using a multimeter, check the Transmission Fluid Temperature Sensor G93 terminals 1 to 2 for resistance.

ATF Temperature Specified Values
Approx. -30 degrees C 37.0 - 51.0 kohms
Approx. 10 degrees C 5 - 8 kohms
Approx. 25 degrees C 3.0 - 5.0 kohms
Approx. 110 degrees C 230.0 - 265.0 kohms
Approx. 145 degrees C 100.0 - 120.0 kohms

If any of the specified values are not obtained:
- Replace the Transmission Fluid Temperature Sensor G93.

If the specified values are obtained:

Checking wiring
If the manufacturers test box is being used. Perform the following step.
- Install the Adapter F/VAG1598 VAG1598/22.

If the manufacturers test box is not being used. Perform the following step.
- Remove the Transmission Control Module (TCM) J217.







- Using a multimeter, check the Transmission Fluid Temperature Sensor G93 electrical harness connector terminals to the Transmission Control Module (TCM) J217 electrical harness connector T52 terminals for resistance.

Transmission Fluid Temperature Transmission Control Module
Sensor G93 electrical harness (TCM) J217 electrical connector
connector terminal T52 terminals or test box sockets
1 45
2 8

Specified value: 1.5 ohms Max.

If the specification was not obtained:
- Check the wiring for a short circuit to each other, Battery (+), and Ground (GND).
- If necessary, repair the faulty wiring connection.

If no malfunction was found in the wiring and the resistance was not OK:
- Replace the Transmission Fluid Temperature Sensor G93.
- Erase the DTC memory. Clearing Diagnostic Trouble Codes
- Perform a road test to verify repair.

If the DTC does not return:

Repair complete, Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes

- End diagnosis.

If the DTC does return and no malfunction is detected in the wiring and resistance was OK:
- Replace the Transmission Control Module (TCM) J217.
- Assembly is performed in the reverse of the removal.

Final procedures
1. Check the DTC memory. Reading Diagnostic Trouble Codes
2. If necessary, erase DTC memory of the Transmission Control Module (TCM) J217.
3. Generate readiness code.

End diagnosis.