Transmission Temperature Sensor/Switch: Testing and Inspection

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 Prerequisites

• Respective fuses in fuse box (instrument panel, right) 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 04 - Erase DTC Memory ] .

- Generate readiness code --> [ Readiness Code ] Monitors, Trips, Drive Cycles and Readiness Codes.

If specified values are obtained:

- Check wires according to wiring diagram.

Wiring, Checking

- 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. 1.5ohms

- 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) --> [ Transmission Control Module, Replacing ] Transmission Control Module, Replacing.