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_8E_37_01J_1_0202_21.htm
J217_8E_37_01J_1_0304_21_TPL20221_Sollwerte.htm
J217_8E_37_01J_1_0304_21_TPL21788_Sollwerte.htm
J217_8E_37_01J_2_1103_21.htm
J217_8E_37_01J_3_0102_21.htm
J217_8E_37_01V_1_0601_21_MWB_lesen.htm
J217_8E_37_____1_1000.htm
J217_8E_37_____1_1101_21.htm
J217_8E_38_01J_1_0303_21_codieren.htm
J217_8E_38_01J_1_0506_21_Pinbelegung.htm
J217_8E_38_01J_2_0303_21_codieren.htm
J217_8E_38_01V_1_0102_21.htm
J217_8E_38_01V_1_0303_21_codieren.htm
J217_8E_38_01V_2_0303_21_codieren.htm
J217_8E_38_09L_1_0503_21_MW_lesen.htm
J217_8E_38_09L_1_0503_21_Pinbelegung.htm
J217_8E_38_09L_1_0503_21_RdW_codieren.htm
J217_8E_38_09L_1_0505_21_MW_lesen.htm
J217_8E_38_09L_2_0503_21_MW_lesen.htm
J217_8E_38_09L_2_0503_21_USA_codieren.htm
J217_8E_38_0AN_1_0506_21_MWB_lesen.htm
J217_8E_38_0AN_1_0506_21_RdW_codieren.htm
J217_8E_38_0AN_1_0506_21_USA_codieren.htm
J217_8E_38_____1_0503_21_SG-Version.htm
J217_8E_38_____2_0503_21_erw-SG-Ident.htm
J217_8E_38_____3_0503_21_Softwareversion.htm
J217_8E_38_____4_0503_21_Hardwarenr.htm
J217_8E_38_____5_0503_21_Fahrgestellnr.htm
J217_8E_38_____6_0503_21_Motornr.htm
J217_8E_38_____7_0503_21_Typpruefnr.htm
J217_8E_38_____8_0503_21_Flashstatus.htm
J217_8E_38_____9_0503_21_Lebenslauf.htm

Coding table

Multitronic control unit 01J in

Audi A4 2001 (A4 Saloon, A4 Avant, A4 Cabriolet)

 

KGeneral note

In coding of the Multitronic control unit -J217 a distinction is made between

I Steering wheels without Tiptronic buttons and without paddles

I Steering wheels with Tiptronic buttons

I Steering wheels with shift paddles

For details of the classification of steering wheel with Tiptronic buttons and with shift paddles refer to the Fitting Location documents in test program J217 - Multitronic control unit, coding

 

 

Model year 2001

 

Coding value 00001         

This coding value applies to all vehicles with Multitronic which do not have control unit part number 01J927156CR.

However, in model year 2001 there are some vehicles which were shipped with coding value 00002. These vehicles are identifiable by the control unit part number 01J927156CR. The actual identifying feature, however, is the index CR

 

Coding value 00002         

In model year 2001 there are some vehicles with control unit part number 01J927156CR which need to be coded with this value.

Vehicles coded with this value must be recoded with the value 00002 in the event of a control unit replacement.                    

 

Coding value 01001

In selector lever position D the steering wheel Tiptronic buttons or shift paddles can be used to switch briefly to manual shift mode (Tiptronic mode), i.e. press the '+' button to shift up and '-' to shift down

This function can by disabled by coding value 01001, i.e. operating the steering wheel Tiptronic buttons or shift paddles can only change gear in the Tiptronic gate.

Only for vehicles which do not have control unit part number 01J927156CR.

KNote The factory coding is: 00001

 

Coding value 01002

Only for vehicles which have control unit part number 01J927156CR.

In selector lever position D the steering wheel Tiptronic buttons or shift paddles can be used to switch briefly to manual shift mode (Tiptronic mode), i.e. press the '+' button to shift up and '-' to shift down

This function can by disabled by coding value 01002, i.e. operating the steering wheel Tiptronic buttons or shift paddles can only change gear in the Tiptronic gate.

KNote The factory coding is: 00002

    

 

From model year 2002

 

Coding value 00001         

This coding value applies as from model year 2002 to all vehicles with Multitronic.

 

Coding value 01001

In selector lever position D the steering wheel Tiptronic buttons or shift paddles can be used to switch briefly to manual shift mode (Tiptronic mode), i.e. press the '+' button to shift up and '-' to shift down

This function can by disabled by coding value 01001, i.e. operating the steering wheel Tiptronic buttons or shift paddles can only change gear in the Tiptronic gate.

KNote The factory coding is: 00001

 

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