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.


J151_8E_19_ASN_1_0900.htm
J17_8E_20_ALT_1_0700_21.htm
J17_8E_20_ALT_2_0900_21.htm
J17_8E_20_ALZ_1_0900_21.htm
J17_8E_20_AWA_1_0902_21.htm
J17_8E_20_BBK_1_1002_21.htm
J17_8E_23_BKE_2_0504_21.htm
J17_8E_23_BLB_2_0704_21.htm
J17__8E_20_AKE_1_0800.htm
J17__8E_20_ALZ_1_1202_21_ab_Mj_2002.htm
J17__8E_20_ASN_1_0900_21.htm
J17__8E_20_ASN_2_1100_21.htm
J17__8E_20_AVB_1_0800.htm
J17__8E_20_AWA_1_0802_21.htm
J17__8E_20_AWX_1_0800.htm
J17__8E_20_BBK_1_1202_21.htm
J226_8E_37_01J_1_0202_21.htm
J245_8E_60_____1_0504_21_Allg_Beschreibung.htm
J245_8E_60_____2_0504_21_Allg_Beschreibung.htm
J245_8E_60_____3_0504_21_Allg_Beschreibung.htm
J271_8E_24_ALT_2_0900_21.htm
J271_8E_24_ASN_2_0900_21.htm
J271_8E_24_AWA_2_0802_21.htm
J271_8E_24_BGB_1_0704_21.htm
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J271_8E_24_____1_0802_21.htm
J293_8E_19_AKE_1_1000_21.htm
J293_8E_19_AKE_2_1000_21.htm
J293_8E_19_ASN_1_0201_21.htm
J293_8E_20_ALZ_1_1000_21.htm
J293_8E_20_ALZ_2_1000_21.htm
J299_8E_20_ALZ_1_1202_21_ab_Mj_2002.htm
J299_8E_24_ALT_2_0900_21.htm
J299_8E_24_ALZ_2_0900_21.htm
J299_8E_26_ALT_1_0700_21.htm
J299_8E_26_ALZ_1_0700_21.htm
J299_8E_26_ALZ_3_0700_21.htm
J299_8E_26_BDV_1_1101_21.htm
J317_8E_23_AVB_1_0800_21.htm
J317_8E_23_AVB_2_0800_21.htm
J317_8E_23_AWX_1_0800_21.htm
J317_8E_23_AWX_1_1002_21.htm
J317_8E_23_AWX_2_0800_21.htm
J317_8E_23_BKE_1_0504_21.htm
J322_8E_23_AKE_1_0800.htm
J322_8E_23_AKE_2_0800.htm
J338_8E_15_BNS_1_0605_21.htm
J338_8E_24_ALT_1_0402_21.htm
J338_8E_24_ASN_1_0501_21.htm
J338_8E_24_AWA_1_0402_21.htm
J338_8E_24_BNS_1_1205_21.htm
J338_8E_24_CAJA_1_1107_21.htm
J359_8E_23_BKE_1_0504_21.htm
J359_8E_28_AVB_1_0800.htm
J359_8E_28_AWX_1_0800.htm
J359_8E_82_AKE_1_0800.htm
J359_8E_82_BKN_1_0804_21.htm
J363_8E_24_ALZ_2_0900_21.htm
J363_8E_24_ALZ_2_1202_21_ab_Mj_2002.htm
J363_8E_26_ALZ_1_1202_21_ab_Mj_2002.htm
J810_8E_72_____1_0706_21_MWB_lesen.htm
J810_8E_72_____1_0706_21_RS_Schalensitz.htm

The relay carrier is located in the electronics box in the plenum chamber under the control units.

 

- 1 -  Continued coolant circulation relay open circuit

-J151

 

- 2 -  Motronic current supply relay  -J271

 

- 3 -  Secondary air pump relay - -J299

            

- 5 -  Fuse for engine control unit

-S282

          

- 6 -  Fuse for secondary air inlet

-S130

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