Checking the signal cable

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.

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Connector

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition off
Idle air control (IAC) valve disconnected.
Check the cable between idle air control (IAC) valve connector terminal 2 (control module side) and engine control module (ECM) terminal #64. Check for a short-circuit to ground according to Short-circuit to ground, permanent faults .

Remedy as necessary.

Try a new idle air control (IAC) valve if no fault is found during the above fault-tracing.

Other information:
- To replace the idle air control (IAC) valve, see Replacing the idle air control (IAC) valve .
Fig 3: Identifying Idle Air Control (IAC) Valve Connector Terminals
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 4: Identifying Ohmmeter
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 5: Identifying EMS2000
Courtesy of VOLVO CARS OF NORTH AMERICA.

Continue
Refer to Verification