09G Automatic Transmission
Electrical and Electronic Components and Locations
1 Transmission Control Module (J217)
• The Transmission Control Module (TCM) sends and receives data from the data bus.
• Installed location, refer to => [ Transmission Control Module ].
• Can be checked in "Guided Fault Finding" using the vehicle diagnostic tester.
2 Diagnostic Connection
• Installed location: The diagnostic connection is located on the driver's side under the storage compartment.
3 Shift Lock Solenoid (N110)
• Installed location: Is integrated permanently inside the selector mechanism and cannot be replaced separately.
• Can be checked in "Guided Fault Finding" using the vehicle diagnostic tester.
4 Multifunction Transmission Range Switch (F125)
• Installed location, refer to => [ Multifunction Transmission Range Switch ].
• Can be checked in "Guided Fault Finding" using the vehicle diagnostic tester.
• Removing and installing, refer to => [ Multifunction Transmission Range Switch (F125) ] Service and Repair.
• Adjusting, refer to => [ Multifunction Transmission Range Switch (F125), Adjusting ] Adjustments
5 Valve Body
• Installed location, refer to => [ Valve Body ].
• The components can be checked in "Guided Fault Finding" using the vehicle diagnostic tester.
• For the correct allocation, refer to the Parts Catalog.
6 Sensor Wiring Harness
• With the transmission fluid temperature sensor (G93).
• Installed location, refer to => [ Sensor Wiring Harness ].
• Removing and installing, refer to => [ Wiring Harness, with 8 Pin Connector ] Wiring Harness, with 8 Pin Connector.
• For the correct allocation, refer to the Parts Catalog.
7 Solenoid Valve Wiring Harness
• Installed location, refer to => [ Solenoid Valve Wiring Harness ].
• Removing and installing, refer to => [ Wiring Harness, with 14 Pin Connector ] Wiring Harness, with 14 Pin Connector.
• For the correct allocation, refer to the Parts Catalog.
8 Selector Mechanism Cover with Selector Lever Scale Illumination Bulb
• The selector lever scale illumination bulb (L101) is integrated inside the cover.
• Removing and installing, refer to => [ Selector Lever Handle ] Selector Lever Handle.
9 Selector Lever Sensor System Control Module (J587) with Selector Lever (E313) , Tiptronic Switch (F189) , Selector Lever Park Position Lock Switch (F319)
• Installed location: The components are permanently integrated in the selector mechanism circuit board and cannot be replaced separately.
• The components can be checked in "Guided Fault Finding" using the vehicle diagnostic tester.
• The selector mechanism must be replaced if a component is faulty. Refer to => [ Selector Mechanism with Selector Lever Cable ] Selector Mechanism with Selector Lever Cable.
10 Transmission Input Speed Sensor (G182)
• Installed location, refer to => [ Transmission Input Speed Sensor and Transmission Output Speed Sensor ].
• Removing and installing, refer to => [ Transmission Input Speed Sensor (G182) ] Transmission Input Speed Sensor.
• Can be checked in "Guided Fault Finding" using the vehicle diagnostic tester.
11 Transmission Output Speed Sensor (G195)
• Installed location, refer to => [ Transmission Input Speed Sensor and Transmission Output Speed Sensor ].
• Removing and installing, refer to => [ Transmission Output Speed Sensor (G195) ] Transmission Output Speed Sensor (G195).
• Can be checked in "Guided Fault Finding" using the vehicle diagnostic tester.
12 Transmission Range Display (Y6)
• Installed location: The transmission range display is integrated inside the instrument cluster. Refer to => [ Transmission Range Display ].
• Can be replaced only together with the instrument cluster.
13 Kick Down Switch (F8)
• Not a separate component, assumes the function of the accelerator pedal position sensor (G79) and accelerator pedal position sensor 2 (G185) , both are integrated in the accelerator pedal module. Installation location, refer to => [ Kick Down Switch ].
• Signal received in the Engine Control Module (ECM).
• Signal transmitted from the ECM to the TCM via the CAN bus.
• Can be checked in "Guided Fault Finding" using the vehicle diagnostic tester.
14 Brake Lamp Switch (F)
• Installed location, refer to => [ Brake Lamp Switch ].
• Can be checked in "Guided Fault Finding" using the vehicle diagnostic tester.
Transmission Control Module
Installed location: The control module - A - is located in the front of the engine compartment on the left side next to the battery.
Removing and installing:
- Unclip the module - A - from the bracket and remove it upward.
- Disconnect the connector from the module.
Install in reverse order of removal.
Multifunction Transmission Range Switch
Installed location: The switch is located on the upper side of the transmission.
Valve Body
Installed location: The valve body is bolted to the underside of the transmission housing and is covered by the transmission fluid pan.
The solenoid valve 1 (N88) , solenoid valve 2 (N89) , solenoid valve 3 (N90) , solenoid valve 4 (N91) , solenoid valve 5 (N92) , solenoid valve 6 (N93) , solenoid valve 9 (N282) and solenoid valve 10 (N283) are attached to the valve body.
Sensor Wiring Harness
• With an integrated transmission fluid temperature sensor - arrow -
• Check the transmission fluid temperature sensor in "Guided Fault Finding" using the vehicle diagnostic tester.
Installed location: The wiring harness is secured to the valve body in the transmission.
Solenoid Valve Wiring Harness
Installed location: The wiring harness is secured to the valve body in the transmission.
Transmission Input Speed Sensor and Transmission Output Speed Sensor
Installed location: inside the transmission housing above the valve body.
1 Transmission input speed sensor
2 Transmission output speed sensor
Transmission Range Display
Installed location: Inside the instrument cluster - 1 -.
Kick Down Switch
A programmed value from the accelerator pedal position sensor and accelerator pedal position sensor 2 (integrated in the accelerator pedal module) are saved in the Engine Control Module (ECM) as a kick down signal.
• Signal transmitted from the ECM to the TCM via CAN bus.
Accelerator pedal module removing and installing.
Brake Lamp Switch
Installed location: The switch - A - is located on the brake master cylinder.
Brake lamp switch removing and installing.