Cabrio GLX L4-2.0L (ABA) (2001)
Information Bus: Testing and Inspection
CAN-Bus, Checking
Vehicles with automatic transmission only
Function
The engine control module communicates with all control modules capable of data bus via a CAN data bus.
The control modules capable of data bus are connected together via two data bus wires (CAN high and CAN low) and exchange information (messages).
Further information:
Self study program No. 186 "The CAN data bus".
Test conditions
A malfunction has been recognized by the CAN data bus On Board Diagnostic.
Special tools and equipment
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Test box VAG 1598/18
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Test box VAG 1598/22
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Hand multimeter VAG 1526 or multimeter VAG 1715
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Adapter set VAG 1594
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Wiring diagram
Test sequence
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Switch ignition off.
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Disconnect connector -arrow- from transmission control module.
NOTE: The transmission control module is located below the rear seat bench.
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Connect test box VAG 1598/18 to transmission control module wiring harness -1- and lock -2-.
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Check CAN data bus wiring with terminal resistors in engine control modules:
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Perform a resistance measurement between test box sockets 3 + 25.
Specification: 55 to 75 Ohms
If the resistance value is outside the specified range:
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Unlock engine control module connector and pull it off.