Control of idle air
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.
| 1 | Engine control module (ECM) | 5 | Throttle position sensor (TPS) |
| 2 | Valve for idle RPM | 6 | ECC control panel |
| 3 | Engine speed (RPM) sensor | 7 | A/C pressure sensor |
| 4 | Engine coolant temperature (ECT) sensor | 8 | Transmission control module (TCM) |
Function
Valve defective
If there should be a problem with a valve, the EVAP-valve opens to let in air to the engine through the canister.