Pressure Regulator 1 - Open Circuit/Short Circuit to Ground, Short Circuit to B+

P1813

Pressure regulator 1 - Open circuit/short circuit to ground, short circuit to B+

Function
Pressure regulators (DR) are pressure-control solenoid valves. They transform an electric current into a proportional hydraulic pressure.

Diagnosis condition
- Ignition on

P1813-P1828:

Wiring diagram







Diagnosis procedure







1 Check pressure regulator with wiring.

1. Pull off Tiptronic control module connector.
2. Connect ohmmeter to Tiptronic control module connector:
DR1 = pin 52 and pin 5
DR2 = pin 52 and pin 1
DR3 = pin 52 and pin 29
DR4 = pin 52 and pin 4

Indication: 5... 10 Ohms

2 Check wires from Tiptronic control module to transmission connector for continuity.

1. Additionally disconnect connector on transmission.
2. Connect ohmmeter to Tiptronic control module connector and transmission connector:
DR1 = pin 5 and pin 2
DR2 = pin 1 and pin 3
DR3 = pin 29 and pin 7
DR4 = pin 4 and pin 11

Indication: 0... 5 Ohms

If infinity Ohm is indicated, check wiring harness for crushing and chafing damage.

2 Check wires from Tiptronic control module to transmission connector for short circuit to ground.

1. Connect ohmmeter to Tiptronic control module connector and ground:
DR1 = pin 5 and ground
DR2 = pin 1 and ground
DR3 = pin 29 and ground
DR4 = pin 4 and ground

Indication: infinity Ohm

If 0... 5 Ohms is displayed, check wiring harness for crushing and chafing damage.

2 Check wires from Tiptronic control module to transmission connector for short circuit to B+.

1. Switch on ignition.
2. Connect voltmeter to Tiptronic control module connector and ground.
DR1 = pin 5 and ground
DR2 = pin 1 and ground
DR3 = pin 29 and ground
DR4 = pin 4 and ground

Indication: 0 Volt

If battery voltage is indicated, check wiring harness for crushing and chafing damage.