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Audi Workshop Service and Repair Manuals

Variable Induction System > < Wastegate Frequency Valve <--> [Wastegate Solenoid]|Specifications|Page 5046
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Engine Control Module Harness Connector

If NO:

-

Connect Test Box to Engine Control Module (ECM) wiring harness using VAG 1598/5 adapter cable. Refer to VAG 1598 Pin Out Box
Connecting See: Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/Scan Tool
Connecting and Initial Checks/Connecting and Testing VAG 1598 Pin Out Box
^

ECM remains disconnected.

If LED tester lights up continuously:

-

Check wiring between terminal 2 of wastegate bypass regulator valve connector, and terminal 33 of Test Box, for short circuit to GND, using
wiring diagram.

If LED tester does NOT blink:

-

Check continuity between terminal 2 of wastegate bypass regulator valve, and terminal 33 of Test Box, using wiring diagram.
^

Must be 1.0 ohm maximum.

If circuit is grounded or open between terminal 2 of wastegate bypass regulator valve connector, and terminal 33 of ECM connector,

-

Repair as necessary.

If circuit is OK:

-

Replace ECM.

Variable Induction System > < Wastegate Frequency Valve <--> [Wastegate Solenoid]|Specifications|Page 5046