Transmission Fluid Temperature Sensor, Checking

Diagnostic Procedures

Transmission Fluid Temperature Sensor, Checking

Special tools, testers and auxiliary items required

• Multimeter (VAG1526) or Multimeter (VAG1715)

• Connector test kit (VAG1594)

• Wiring diagram

Test requirements

• Respective fuses in fuse box must be OK:

• Battery voltage must be at least 11.5 volts.

• Ground (GND) connections to transmission must be OK.

• Selector lever must be in P position.

• Ignition switched off.

Test sequence

- Disconnect 8-pin harness connector (arrow - 3 -).





Checking resistance

- Measure resistance of Transmission Fluid Temperature Sensor (G93) between terminals 1 + 2 at connector to sensor:





If one of the specified values is not obtained:

- Replace Transmission Fluid Temperature Sensor (G93).

- Erase DTC memory of Transmission Control Module (TCM) , Diagnostic mode 4: Reset/erase diagnostic data.

- Generate readiness code.

If specified values are obtained:

- Check wires to Transmission Control Module (TCM) according to wiring diagram.

Checking wiring

- Connect test box to control module wiring harness , connect test box for wiring test.

- Check wires between test box and 8-pin connector to Transmission Control Module (TCM) for open circuit according to wiring diagram.





Terminal 1 + socket 45

Terminal 2 + socket 8

Wire resistance: max. 1.5 ohms

- Also check wires for short circuit to each other.

Specified value: infinite ohms

If no malfunctions are found in wires:

- Replace Transmission Control Module (TCM) (J217).

Final Procedures

After the repair work, the following work steps must be performed in the following sequence:

1. Check the DTC memory. Refer to --> [ Diagnostic Mode 03 - Read DTC Memory ] Diagnostic Modes 01 - 09.

2. If necessary, erase the DTC memory. Refer to --> [ Diagnostic Mode 04 - Erase DTC Memory ] Diagnostic Modes 01 - 09.

3. If the DTC memory was erased, generate readiness code. Refer to --> [ Readiness Code ] Readiness Code.