Pressure Regulator 3 (Lubrication Pressure/Cooling Pressure), Open Circuit
P17A3Diagnosis information - PDK
Pressure regulator 3 (lubrication pressure/cooling pressure), open circuit
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
- Pressure regulator 3 active
Fault setting conditions
- Internal current measurement, pressure regulator 3: current consumption = 0 mA
- Line resistance between pressure regulator 3 and PDK control unit > 1 MOhm
Possible fault causes
- Line between pressure regulator 3 and PDK control unit faulty
- Pressure regulator 3 faulty
- PDK control unit faulty
Fault effects
- Lubrication pressure control switch-off
- Pressure regulator for lubrication pressure, switch-off
- Torque limitation
- Transmission limp-home indication in instrument cluster control unit