100CS Quattro Wagon V6-2.8L (AAH) (1992)
Idle Air Control Valve: Customer Interest
Actuation, Checking
ACTUATION, CHECKING
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Idle Air Control valve electrical function OK
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slip protective boot away from Idle Air Control valve harness connector but do not disconnect.
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perform Output DTM using VAG 1551 scan tool (function 03 - Output Diagnostic Test Mode) until Idle Air Control valve is actuated.
--> Repair Group D2 -30
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connect LED tester VAG 1 527B between terminal -1- and engine ground.
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LED tester must flash
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connect LED tester VAG 15278 between terminal -2- and battery positive.
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LED tester must light up
If NOT
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perform MPI Electrical Test, steps 2.9 and 2.10
--> Repair Group D2
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repair or replace wiring as necessary between
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Idle Air Control valve terminal -1- and MPI control module terminal -11D
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Idle Air Control valve terminal -2- and MPI control module terminal -7D-
If wiring is OK (but there is NO actuation):