TT Coupe L4-1.8L Turbo (ATC) (2001)
Information Bus: Component Tests and General Diagnostics
Data Exchange, Motronic / ABS (CAN - Bus), Checking
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Check DTC memory of ABS control module (w/EDL).
If there is a DTC related to the CAN - bus/data - bus power train stored:
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Connect VAG 1598/31 test box at wiring harness to ECM, do not connect ECM.
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Check the following wire connections for open circuit and short circuit to Ground and B+:
Test box VAG 1598/31 socket
ABS control module(w/EDL) -J104- or Data bus capable system terminals
58
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60
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77
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79
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Repair open circuit or short circuit if necessary.
If wire connection is OK:
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Replace ABS control module or Engine Control Module (ECM) as a test.