Automatic Transmission Pressure Regulating Valves , Checking

Requirements 

• The battery voltage must be at least 12.5 Volts.
• All electrical consumers must be switched off.
• The parking brake must be engaged.
• The elector lever must be in the "P" position.

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

Test procedure 

• Perform a preliminary check to verify the customers complaint. Refer to → General Diagnosis .

Start diagnosis 

Fig 1: Disconnecting Transmission Control Module (TCM) J217 Electrical Harness Connector

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Disconnect the Transmission Control Module (TCM) J217 electrical harness connector - direction of the arrow  -.
• 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: → 38 GEARS, CONTROL .

Final procedures 

1. Check the DTC memory.
2. If necessary, erase the DTC memory. Refer to Diagnostic Mode 04: Reset/delete Diagnostic Data .
3. If the DTC memory was erased, generate readiness code. Refer to Readiness Code .