audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

ECM Holding Relay <--> [Main Relay (Computer/Fuel System)] > < LED Test Light|Page 4883
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If LED tester does NOT blink:
-

Check for continuity between terminal 2 of IAC valve harness connector and terminal 4 of Test Box.

If NO continuity:
-

Repair short to GND or open circuit between terminal 2 of IAC valve harness connector and terminal 4 of ECM harness connector.

If NO open circuit or short to GND:
-

Replace ECM.

ECM Holding Relay <--> [Main Relay (Computer/Fuel System)] > < LED Test Light|Page 4883