AT control module, location / task / design / function - GF27.19-P-5103GF

TRANSMISSION 722.7 

CAN data bus 

Location 

The front-wheel-drive transmission control (FTC) control module (Y3/7n2) is integrated into the electric FTC control module (Y3/7).

Task 

The front-wheel-drive transmission control (FTC) control module (Y3/7n2) determines the instantaneous operating condition of the vehicle and controls all gearshift sequences taking into account the ease of shifting and the driving situation.

It receives operating data in the form of input signals from:

• Transmission output shaft rpm sensor (Y3/7n1)
• Starter lockout contact (Y3/7s1)
• Transmission fluid temperature sensor (integrated into the front- wheel-drive transmission control (FTC) control module (Y3/7n2))

It is also linked over the engine compartment bus with:

• Instrument cluster (A1)
• Transmission range recognition module (A61)
• ECM control module (N3/5)
• Traction systems control module (N47)
• Air conditioning push-button control module (N19)

The PWM solenoid valves 14 (Y3/7y1), 3 (Y3/7y2) 25R (Y3/7y3) and the torque converter lockup clutch (Y3/7y4) and the shift pressure solenoid valve (Y3/7y5) are actuated by the front-wheel-drive transmission control (FTC) control module (Y3/7n2).

Any faults detected can be called up and reset via the data link connector (X11/4).

Function 

The necessary pressure in relation to the torque to be transmitted, is computed from all the input signals. This involves the processing of the following data from other systems:

ECM control module (N3/5) 

• Engine torque
• Engine speed
• Accelerator pedal position
• Shift offset
• Engine status

Transmission range recognition module (A61) 

• Kickdown switch (S16/6)
• Selector lever position
• W/S program switch

Traction systems control module (N47) 

• Wheel speeds
• Shift offset
• Traction status

Air conditioning push-button control module (N19) 

• A/C compressor torque

The following information is output over CAN-C:

Instrument cluster (A1) 

• Detected faults

Traction systems control module (N47) 

• Transmission ratio
• Wheel speeds

ECM control module (N3/5) 

• Kickdown switch (S16/6)
• Engaged drive mode
• Selector lever position "P"/"N"

	Starter lockout contact, location / task / design / function		GF27.19-P-5106GF
	Torque converter lockup clutch PWM solenoid valve, location / task / design / function		GF27.19-P-5112GF
	Shift valve, location / task / design / function		GF27.19-P-5113GF
	Transmission range recognition module, location / task / design / function		GF27.19-P-5114GF
	Wheel speed sensor, location / task / function		GF27.19-P-5127GF
	Shift PWM solenoid valve, location / task / design / function		GF27.19-P-5116GF