09L, 6 Speed A/T AWD

Transmission Control Module Voltage Supply, Checking

NOTE: The Transmission Control Module (TCM) J217 is a component of the mechatronic unit in the transmission and cannot be replaced separately.

Special tools, testers and auxiliary items required
- Multimeter V.A.G 1526 A or equivalent.
- Wiring diagrams.

Requirements
- The fuses for the transmission electronics OK. Electrical Wiring Diagrams,
- Troubleshooting and Component Locations.
- The battery voltage must be at least 12.5 volts.
- The Ground (GND) connections at the transmission OK.
- The parking brake engaged.
- The selector lever of automatic transmission in position "P".
- All electrical consumers switched off.
- The ignition switched off.

Test sequence







- Release the electrical connector in the - direction of the arrow - and remove it from the Transmission Control Module (TCM) J217.

Observe safety precautions.
- Check the electrical harness connector for contact corrosion and ingress of water.

If the electrical harness connector is not OK:
- Repair the malfunction.

If the electrical harness connector is OK:
- Check the wiring according to the wiring diagram:

If no malfunctions are found in the wiring:
- Replace the Mechatronic unit in the transmission:

NOTE: The Transmission Control Module (TCM) J217 is a component of the Mechatronic unit and cannot be replaced separately.

Final procedures
1. Check the DTC memory. Diagnostic Mode 03 - Read DTC Memory
2. If necessary, erase DTC memory of the Transmission Control Module (TCM) J217. Diagnostic Mode 04 - Erase DTC Memory
3. Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes