display AUDI A4 1995 B5 / 1.G AFC Engine Idle Air Control Valve Checking Workshop Manual

24-37


Idle Air Control (IAC) valve,
checking

Note:
To functionally check the idle speed control
system "Read Measuring Value Block"
function 08, display groups 004 through 018.
Electrical checks

- Disconnect Idle Air Control (IAC) valve harness connector.

If the specified resistance is not obtained: - Measure IAC valve resistance by connecting multimeter (Fluke 83 or
equivalent) between connector terminals using jumper wires from
connector test kit VW 1594.

Specified value: 7 to 11 - Replace Idle Air Control (IAC) valve.
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