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.


Pin assignment on automatic gearbox control unit -J217-:


Pin 01: Term.31 earth

Pin 02: Term.31 earth

Pin 03: Term.30 continuous positive

Pin 04: (+) Solenoid valve -N283

Pin 05: (+) Solenoid valve -N91

Pin 06: (-) Solenoid valve -N92

Pin 08: ATF temperature sensor -

Pin 09: Diagnosis, K-wire

Pin 10: Multi-function switch B switch

Pin 15: Activation solenoid valve -N89

Pin 16: (+) Solenoid valve -N282

Pin 17: (-) Solenoid valve -N93

Pin 18: (-) Solenoid valve -N90

Pin 21: Reversing signal

Pin 22: Multi-function switch PA switch

Pin 27: Term.15 positive switched

Pin 28: Term.15 positive switched

Pin 29: Selector lever lock solenoid -N110

Pin 30: (+) Solenoid valve -N90

Pin 31: (+) Solenoid valve -N93

Pin 32: (-) Solenoid valve -N282

Pin 34: Drive train data bus, CAN-Low

Pin 36: Multi-function switch C switch

Pin 38: Gearbox output speed +12V

Pin 39: Signal input gearbox input speed

Pin 40: Signal for selector lever sensor -J587

Pin 41: Activation solenoid valve -N88

Pin 42: (+) Solenoid valve -N92

Pin 43: (-) Solenoid valve -N91

Pin 44: (-) Solenoid valve -N283

Pin 45: ATF temperature sensor +

Pin 46: Drive train data bus, CAN-High

Pin 47: Multi-function switch A switch

Pin 48: Signal from Tiptronic switch -F189

Pin 50: Signal input gearbox output speed

Pin 51: Gearbox input speed +12V


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