Component description for transmission oil auxiliary pump control unit - GF27.19-P-4030AHS

TRANSMISSION 722.9 in MODEL 216.3 (except 216.374) with CODE (B03) ECO start/stop function as of Model Year 2011/YoM 10 model refinement package

TRANSMISSION 722.9 in MODEL 221.0 (except 221.074) with CODE (B03) ECO start/stop function as of Model Year 2011/YoM 10

TRANSMISSION 722.9 in MODEL 221.1 (except 221.174) with CODE (B03) ECO start/stop function as of Model Year 2011/YoM 10

TRANSMISSION 722.9 in MODEL 221.0 (except 221.095) with CODE (B03) ECO start/stop function

TRANSMISSION 722.9 in MODEL 221.1 (except 221.195) with CODE (B03) ECO start/stop function

Shown: Electric transmission oil pump (M42)

Fig 1: Identifying Suction And Thrust Sides Of Transmission Oil Auxiliary Pump Control Unit

Courtesy of MERCEDES-BENZ USA

Location

The transmission oil auxiliary pump control unit is integrated into the electric transmission oil pump.

Task

General

The transmission oil auxiliary pump control unit controls the electric transmission oil pump. When the internal combustion engine has stopped the electric transmission oil pump takes over the oil supply of the control part and actuator part of the transmission.

CAN data bus

The transmission oil auxiliary pump control unit is connected to the fully integrated transmission control unit (VGS) (Y3/8n4) via the drive train CAN (CAN) and exchanges data with it.

Input and output signals

The following input signals are evaluated by the transmission oil auxiliary pump control unit and the corresponding output signals are output:

Direct input signals
Direct output signals
CAN input signals
CAN output signals

Direct input signals

Terminal 87
Circuit 31

Direct output signals

None

CAN input signals

Fully integrated transmission control unit (VGS) (Y3/8n4)

Electric transmission oil pump, request

CAN output signals

Fully integrated transmission control unit (VGS) (Y3/8n4)

Diagnostic data

	Wiring diagram for transmission oil auxiliary pump control unit	N89 Model 216	PE27.19-P-2104-97CAA
	Wiring diagram for fully integrated transmission control unit	Y3/8 Model 216	PE27.19-P-2103-97CAA