Removing and Installing Wire Harness In Transmission
Removing and installing wire harness in transmission
Information about wiring 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 wiring 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 -Arrow-.
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 -Arrow-.
Removing wire harness
5. Pull off plug -Arrow- 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 -Arrow- for ATF temperature sensor -7- and remove sensor.
ATF temperature sensor
8. Pull off cable plug -2- for output shaft speed inductive pickup -Arrow-.
Cable plug for output shaft inductive pickup
9. Remove wire harness for sensors through opening in the housing -Arrow-.
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 -Arrow-.
Output shaft inductive pickup
Installing wiring 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 -arrow-. -> 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 degree angle
Fastening screws for control unit
3. Plug in cable plug -2- for output shaft speed inductive pickup. -arrow-
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 -arrow-. -> 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- -arrow-.
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 -arrow-. -> 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.