display AUDI A4 1997 B5 / 1.G AFC Engine Idle Air Control Valve Checking Workshop Manual
Page 1 of 5
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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(IAC
) valve, checkin
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