Removing and Installing Wire Harness In Transmission

WM 381819 Removing and installing wire harness in transmission





Information about wire harness





Overview of wiring harness

-1- - Shift solenoid valve (S1)

-2- - Plug connection for output shaft speed inductive pickup

-2a- - Cable routing for output shaft speed inductive pickup

-3- - Oil pressure switch 2 for transmission (omit in MY 2006)

-4- - Oil pressure switch 1 for transmission (omit in MY 2006)

-5- - Shift solenoid valve UK (modulation pressure)

-6- - Input shaft speed (turbine speed) inductive pickup

-7- - ATF temperature sensor

-8- - Modulation pressure solenoid valve (main)

-9- - Shift solenoid valve C1 (modulation pressure)

-10- - Shift solenoid valve C3 (modulation pressure)

-11- - Shift solenoid valve B1 (modulation pressure)

-12- - Shift solenoid valve C2 (modulation pressure)

-13- - Shift solenoid valve (S2)

Preliminary work for wire harness

1. Remove ATF filter.

Removing wire harness in transmission





Overview of wire harness

Information:
- The adaptation values of the Tiptronic control unit must be reset using the Porsche System Tester when replacing/renewing the wire harness.

1. Remove fastening screw from both connectors .





Connector installation

2. Pull off connectors -Arrows- on the solenoid valves -8-12-.





Solenoid valves

3. Pull off cable plugs -1,5,13-.
4. Remove wire harness for solenoid valves through opening in the housing .





Removing wire harness

5. Pull off plug for input shaft inductive pickup -6-.





Cable plug for input shaft inductive pickup

6. Pull off cable plugs from the oil pressure switches -4,3-.
7. Unscrew fastening screw for ATF temperature sensor -7- and remove sensor.





ATF temperature sensor

8. Pull off cable plug -2- for output shaft speed inductive pickup .





Cable plug for output shaft inductive pickup

9. Remove wire harness for sensors through opening in the housing .





Removing wire harness

10. Remove electrohydraulic control unit. To do this, unscrew fastening screws -Arrows- and take out the control unit.





Fastening screws for control unit

11. Remove output shaft speed inductive pickup. To do this, unscrew fastening screw .





Output shaft inductive pickup

Installing wire harness in transmission





Overview of wiring harness

Information:
- The adaptation values of the Tiptronic control unit must be reset using the Porsche System Tester when replacing/renewing the wire harness.

1. Install output shaft speed inductive pickup. To do this, screw in fastening screw . - Tightening torque: 7.5 ftlb.





Output shaft inductive pickup

Information:
- Screws which are tightened with a torque angle must be replaced with new ones.

2. Install electrohydraulic control unit and screw in new fastening screws -arrows-. - Initial tightening: 6 ftlb. - Final tightening: 90 angular degrees





Fastening screws for control unit

3. Plug in cable plug -2- for output shaft speed inductive pickup.





Cable plug for output shaft inductive pickup

4. Install wire set for sensors through opening in the housing.
5. Insert ATF temperature sensor -7- and screw in fastening screw . - Tightening torque: 7.5 ftlb.





ATF temperature sensor

6. Plug in cable plug for oil pressure switch -3,4- and inductive pickup for input shaft -6- .





Cable plug for input shaft inductive pickup

7. Install wire set for solenoid valves through opening in the housing.
8. Push in the cable plug for the solenoid valves -1,5,8-13-.
9. Screw in the fastening screw from both plugs . - Tightening torque: 7.5 ftlb.





Plug installation

Subsequent work

Reworking wiring harness

1. Install ATF filter.
2. Unscrew ATF control screw -A- and fill in ATF until a constant discharge is visible at the lifting tube.





Oil inspection plug and oil drain plug

3. Screw in ATF control screw with a new sealing ring. - Tightening torque: 52 ftlb.
4. Check and if necessary, top up the ATF.