A6 Sedan V6-2.8L (ATQ) (2000)
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The wire connection and rough terrain signal are monitored by the Engine Control Module (ECM).
Test requirement:
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Control module coding OK.
Test sequence
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Switch ignition off.
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Connect VAG1598/31 test box at wiring harness to ECM, do not connect ECM.
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Check the following wire connection for open circuit and short circuit to Ground (GND) and B+:
Test box VAG1598/31 Socket
ABS control module (w/EDL) -J104- Terminal
74
If no malfunctions are found in wire:
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Replace ABS control module.
If the malfunction is indicated again after replacing the ABS control module:
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Replace Engine Control Module (ECM).