Solenoid Valve 1 N88 , Checking

Solenoid Valve 1 N88, Checking

NOTE: The Solenoid Valve 1 N88 is a component of the Mechatronic unit and cannot be replaced separately.

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 sequence







- 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.

NOTE: The Solenoid Valve 1 N88 is a component of the Mechatronic unit and cannot be replaced separately.

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