Fluid Pressure Sensor/Switch: Testing and Inspection

Senders For Hydraulic Pressure, Automatic Transmission, Checking

- Respective fuses must be OK: Electrical Wiring Diagrams, Troubleshooting & Component Locations
- Battery voltage must be at least 11.5 volts.
- Selector lever must be in -P- position.
- Ground (GND) connections to transmission must be OK.
- Transmission must be OK mechanically.

Test sequence
- Disconnect 20-pin harness connector to Direct Shift Gearbox (DSG) Mechatronic -J743- on transmission.
Observe safety precautions.
- Check harness connector for contact corrosion and ingress of water.

If harness connector is not OK:
- Repair the malfunction.
- Erase DTC memory of Transmission Control Module (TCM), Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 04 - Erase DTC Memory
- Generate readiness code.

If harness connector is OK:
- Replace Direct Shift Gearbox (DSG) Mechatronic -J743-.

NOTE: Sender 1 for hydraulic pressure, automatic transmission -G193- and Sender 2 for hydraulic pressure, automatic transmission -G194- are components of the Mechatronic unit and cannot be replaced individually.