GF27.19-P-4030AHW Transmission Oil Auxiliary Pump Control Unit, Component Description

GF27.19-P-4030AHW Transmission Oil Auxiliary Pump Control Unit, Component Description
TRANSMISSION 722.9 (except 722.930) in MODEL 204.0
as of model year 2012
- with CODE (B03) ECO start/stop function /YoM 11 model refinement package
TRANSMISSION 722.9 (except 722.930) in MODEL 204.2
as of model year 2012
- with CODE (B03) ECO start/stop function /YoM 11 model refinement package
TRANSMISSION 722.9 (except 722.930) in MODEL 204.3
- with CODE (B03) ECO start/stop function
TRANSMISSION 722.9 in MODEL 204.9
- with CODE (B03) ECO start/stop function

Implementation dates and validities for code (B03) ECO start/stop function
- Model 204.0/2 as of model year 2012 /YoM 11 model refinement package with engine 271.8, 276.9, 651.9
- Model 204.025/225 as of 1.6.2011 with engine 642.8
- Model 204.3
- Model 204.9 as of 1.6.2011 with engine 651.9
- Model 204.988 as of 1.1.2011 with engine 276.9
- Model 204.0/2/3 as of 1.6.2012 with engine 274.9





Shown: Electric transmission oil pump (M42)

1 Electrical plug connection

N89 Transmission oil auxiliary pump control unit

A Intake side
B Thrust side

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 is stopped, the electric transmission oil pump takes over the oil supply of the control 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 (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 control unit
- Electric transmission oil pump, request

CAN output signals
Fully integrated transmission control control unit
- Diagnostic data