P0970

P0970

Diagnosis information - PDK

Pressure regulator 3 (lubrication pressure/cooling pressure), short circuit to ground

Diagnostic conditions
The control unit initially tests internal function sequences when the ignition is switched on (terminal 15). If they are OK, all diagnosable outputs are then tested and any faults are stored.

- Ignition on
- The following fault is not detected: P1831
- The following fault is not detected: P1839

Possible fault causes
- Line between pressure regulator 3 and PDK control unit, short circuit to ground
- Pressure regulator 3 faulty
- PDK control unit faulty

Fault setting conditions
- Internal current measurement, actuator solenoid RIP: current consumption =0 mA
- Pressure regulator 3, internally measured control current =0 mA
- Pressure regulator 3, measured voltage =0 V

Fault effects
- Power supply switch-off for pressure regulator
- Pressure regulator, clutch 2, switch-off
- Pressure regulator for lubrication pressure, switch-off
- Engaged gear is held until vehicle stops.
- Moving off possible only in 3rd gear
- Transmission limp-home indication in instrument cluster control unit