Test Point 12 - Pressure Regulator

TEST POINT 12 - Pressure regulator - Fault code 34

Possible Causes, Elimination, Remarks
Tiptronic warning lamp comes on, transmission is in emergency mode.

Possible faults: Open circuit, short to ground, short to positive

1) Pull connector off ECU
a) Measure resistance between pin 6 and pin 19.
Nominal value 6 Ohms ±2 Ohms
b) Check pins 6 and 19 for freedom from shorts to ground.

- Check o.k.: ECU faulty

2) Also pull off connector at transmission.
- Check wiring (ECU connector pin 6 to transmission connector pin B and ECU connector pin 19 to transmission connector pin M).

- Wiring o.k.: Transmission fault, refer to mechanical section