P1761

P1761
Shiftlock P/N - discontinuity/short circuit to ground.

P1762
Shiftlock P/N - short circuit to plus.

Function:
With the ignition switched on, shifting from "P" or "N" to a drive position is possible only if the brake pedal is depressed as well.
The locking facility is triggered by a solenoid valve, which activates a detent pawl on the selector lever.
The multi-function switch detects the position "P" or "N" and signals this to the Tiptronic control module. However, the control module does not cause the solenoid to release the selector lever until a signal from the brake-light switch has arrived.

Diagnosis Conditions:
- In the case of open circuit/short circuit to ground =
Ignition on
Operate brake
- In the case of short circuit to B+ =
Ignition on




Wiring Diagram:




Diagnosis Procedure:



1 Check wire from Tiptronic control module to P/N solenoid for continuity.
1. Pull off Tiptronic control module connector.
2. Disconnect selector lever switch connector.
3. Connect ohmmeter to transmission control unit connector pin 2 and selector lever switch connector pin 5.

Indication: 0...5 ohm.

If infinite ohm is indicated, check wiring harness for crushing and chafing damage.

1 Check wire from Tiptronic control module to P/N solenoid for short circuit to ground.
1. Connect ohmmeter to Tiptronic control module connector pin 2 and ground.

Indication: infinite ohm.

If 0...5 ohm is indicated, check wiring harness for crushing and chafing damage.

1 Check wire from Tiptronic control module to P/N solenoid for short circuit to plus.
1. Pull off Tiptronic control module connector.
2. Disconnect selector lever switch connector.
3. Switch on ignition.
4. Connect voltmeter to Tiptronic control module connector pin 2 and ground.

Indication: 0 Volt.

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