Checking the idle air control (IAC) valve
WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
Check that the resistance of the idle air control (IAC) valve is approximately 10 Ω between terminals #1 and #2.
Check the signal cable between idle air control (IAC) valve terminal #2 and engine control module (ECM) terminal #64. Check for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .
Try a new idle air control (IAC) valve if no fault is found during the above fault-tracing.
Other information:
- To connect the breakout box, see Connecting the breakout box. EMS 2000
- To replace the idle air control (IAC) valve, see Replacing the idle air control (IAC) valve .
- Continue
Refer to Verification