Overview - Transmission Control Module
- Component location: The diagnostic connection for the Vehicle Diagnostic Tester in inside the footwell on the driver side.
- Before servicing the transmission, determine as best as possible the cause of the fault using the Vehicle Diagnostic Tester in Guided Fault Finding , Vehicle Self-Diagnosis and Test Instruments .
S Tronic Transmission Mechatronic -J743-, Valves, Sensor And Transmission Input RPM Sensor
- Component location: The S tronic Transmission Mechatronic -J743- is attached to the transmission housing at the bottom and covered by the transmission fluid pan.
The Mechatronic unit incorporates the hydraulic control, the transmission control module, the multifunction transmission range switch and the sensors and actuators as a complete synchronized unit.
OBD checks all the components named.
Refer to MECHATRONIC, REMOVING AND INSTALLING .
Gear Selector, Mechatronic Temperature Sensor In The Overview
- Circuit Board 1 --
- Gear selector module
- Gear Position Distance Sensor 1 -G487- for gear position 2-R
- Gear Position Distance Sensor 2 -G488- for gear position 1-3
- Gear Position Distance Sensor 3 -G489- for gear position 7-5
- Gear Position Distance Sensor 4 -G490- for gear position 4-6
- Clutch Oil Temperature Sensor -G509-
- Transmission Input Speed Sensor 3 -G641- for the clutch input speed sensor
- Circuit Board 2 --
- Electro-hydraulic control module
The Circuit Board 1 -- and Circuit Board 2 -- can be individually removed and installed. Refer to MECHATRONIC CIRCUIT BOARD, REMOVING AND INSTALLING .
Mechatronic Connectors And Sensor Module
Mechatronic connectors:
- Circuit board connector 1 on the transmission control module
- Circuit board connector 2 on the transmission control module
- Circuit Board 2
- Sensor Module -- connector at the wiring harness
- Drive Position Sensor -G676-
- Circuit board 3 in the sensor module
- Transmission Input Speed Sensor 1 -G632-
- Transmission Input Speed Sensor 2 -G612-
- Wiring harness with wiring channel
- Transmission control module to vehicle wiring harness
- Transmission control module at the sensor module
- Transmission control module
The components -4 through 8- are marked as sensor module --.
The Sensor Module -- -2- is installed in the transmission intermediate housing.
The following components are integrated on the sensor module -- :
- Drive Position Sensor -G676-
- Transmission Input Speed Sensor 1 -G632-
- Transmission Input Speed Sensor 2 -G612-
- Circuit board 3
-- Sensor Module -- Removing and Installing. Refer to Sensor Module --, WITH INTEGRATED TRANSMITTERS AND SENSORS -G612-, -G632-, -G676 - AND Circuit Board 3 --, REMOVING AND INSTALLING .
- Component location: The Selector Lever Sensor System Control Module -J587- -2- is clipped to the gearshift mechanism function unit -arrows-.
Refer to Selector Lever Sensor System Control Module -J587-, REMOVING AND INSTALLING .
- Component location: The Shift Lock Solenoid -N110- -1- is clipped to the selector mechanism.
Refer to Shift Lock Solenoid -N110-, REMOVING AND INSTALLING .
- Component location: The Transmission Park Selector Switch -F305-, which consists of two reed contacts -1- and -2-, is installed on the circuit board -B- on the Shift Lock Solenoid -N110- -item A-.
The Transmission Park Selector Switch -F305- can only be replaced together with the Shift Lock Solenoid -N110-.
Refer to Shift Lock Solenoid -N110-, REMOVING AND INSTALLING .
Transmission Fluid Temperature Sensor 2 -G754-
The 7-speed S tronic transmission 0B5 (S tronic) has an additional Transmission Fluid Temperature Sensor 2 -G754- to monitor the transmission fluid temperature of the wheel set on certain engine versions.
- Installed location: Depending on the date of manufacture, there are 2 different versions and component locations, either on the side or in place of the transmission fluid drain plug (Manual Transmission Fluid). Refer to ATF DRAIN PLUG, FILL PLUG AND CHECK PLUG ASSEMBLY OVERVIEW .
Transmission Fluid Cooling Valve -N509-
Component location: Depending on the engine types installed at the subframe or at the transmission housing. Removing and installing the Transmission Fluid Cooling Valve -N509-. Refer to Transmission Fluid Cooling Valve -N509-, REMOVING AND INSTALLING .
Transmission Range Display -Y6-
- Installed location: the Transmission Range Display -Y6- -arrow- is integrated inside the instrument cluster.
Replace the instrument cluster if one of the transmission range displays is faulty. Refer to OVERVIEW - INSTRUMENT CLUSTER .
- Component location: The Selector Lever Transmission Range Position Display Unit -Y26- -item 1- is clipped inside the Multimedia System Control Head -E380-.
Removing and Installing. Refer to LAMPS . .
A programmed value from the Accelerator Pedal Position Sensor -G79- and Accelerator Pedal Position Sensor 2 -G185- (integrated in accelerator pedal module) are saved in the engine control module as a kick-down signal.
- Component location: The accelerator pedal position sensors are integrated inside the accelerator pedal module -arrow-.
The accelerator pedal module must be replaced if the accelerator pedal position sensor is faulty, for the removal and Installation. Refer to ACCELERATOR PEDAL POSITION SENSORS -G79- / -G185-, REMOVING AND INSTALLING .