ECU - Electronic Control Unit

In terminology of VW-group it's any electronic device, which has been carried out some logic function. Sometimes it looks like nonsens - even simple relay can be called ECU.

The coding of Electronic Control Unit used for explain the ECU where it is and what "neighbours" does it have. Very often on modern cars the coding is crossed with adaptation.

Adaptation of the Electronic Control Unit serves to explain to the ECU with whom and how to talk (If we have started to speak allegories) and serves as storehouse of various adjustable parameters. ( part of memory in the Control Unit which can be changed via internal software )

Measured Values Blocks ( MWB ) – various parameters being inbound or calculated. Considering to value of MWB Electronic Control Unit, trying to "control"... Using of MWB allows you ( if you know the basic parameters ) to find out "close to boundary" or temporarily arising ( intermittent, sporadic ) malfunctions and many other useful things at competent use.


J217_8K_34_0B5_1_1108_21_grund.htm
J217_8K_38_06B_1_0407_21_MW_lesen.htm
J217_8K_38_0AW_1_0307_21_MW_lesen.htm
J217_8K_38_0AW_1_0407_21_Pinbelegung.htm
J217_8K_38_0AW_1_0807_21_Bauteile_im_Steuergeraet.htm
J217_8K_38_0B6_1_0407_21_ersetzen.htm
J217_8K_38_0B6_1_0407_21_Pinbelegung.htm
J587_8K_37_____1_0108_21_POSINFO.htm
J587_8K_37_____2_0108_21_TipINFO.htm

J217 - Basic setting on S tronic gearbox 0B5

At present the following basic settings are possible in the automatic gearbox control unit -J217:

YZNote:

A complete gearbox replacement requires no basic setting, only replacement of the automatic gearbox control unit -J217 alone requires basic settings 1-5.

 

1- Calibration of gear sensor -G676.

The gear sensor is a travel/position sensor system which determines the positions of the selector lever. When calibrating the gear sensor -G676, the measured values of the travel sensor and the settings of the selector lever are balanced in the control unit.

Calibration required in case of:

I Replacement of the selector lever

I Replacement of the mechatronics/control unit

I Manipulation of the selector lever/cable/parking lock lever.

Requirement: Engine off, no fault relating to the selector lever in the memory, selector lever in P, electric parking brake active, gearbox oil temperature 20°C - 60°C.

 

2- Calibration of travel sensor -G487...G490.

When calibrating the travel sensors, the respective end positions of the gear actuators are balanced.

Calibration required in case of:

I Removal/replacement/repair of the selector plate

I Removal/replacement/repair of the magnetic clip of a selector plate

I Work on the gear set

I Replacement of the mechatronics/control unit.

Requirement: Engine idling, selector lever in P, no electrical fault in memory, accelerator pedal unpressed, gearbox oil temperature 20°C - 60°C.

 

3- Calibration of partial gearbox valves - N436/N440.

This basic setting is not currently supported.

Calibration required in case of:

I Replacement of valve 4 in partial gearbox 1 - N436 (for pressure regulation of partial gearbox 1) or valve 4 in partial gearbox 2 -N440 (for pressure regulation of partial gearbox 2).

 

4- Calibration of main pressure valve -N472.

This basic setting is not currently supported.

 

5- Adaption of clutch kiss points.

When adapting the clutch kiss points, the learned values from the clutch adaption are reset and the clutch pressure necessary to close the clutch far enough to just begin transmitting a torque is adapted.

Adaption required in case of:

I Replacement of clutch

I Replacement of the mechatronics/control unit.

Requirement: Engine idling, selector lever in P, gearbox oil temperature 40°C - 100°C.

 

6- Resetting the gear actuator activation points.

With the basic setting the adapted activation points of the gear actuators are reset to a factory-set base value. Applicable when carrying out repairs to the gear actuators.

Required in case of:

I Repairs to the gear actuator pistons

Requirement: Engine off, selector lever in P.

 

Site news

November 30, 2012
Content update We are starting big site update. We are sorry for bugs and missed content.
We are especially grateful for financial support of our site

User Name
Password
Forgot your password?
Register
Яндекс.Метрика