Checking the idle air control (IAC) valve connector

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Ignition Switch OFF Position

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Connector(s) Disconnected

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition off.
Disconnect idle air control (IAC) valve.

Fig 3: Identifying Idle Air Control (IAC) Valve Terminals
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 4: Identifying Ohmmeter
Courtesy of VOLVO CARS OF NORTH AMERICA.
- Connect an ohmmeter between idle air control (IAC) valve connector terminals 1 and 2.
- Read off value.
- Connect an ohmmeter between idle air control (IAC) valve connector terminals 2 and 3.
- Read off value.

The ohmmeter should read 9 - 14 Ω at 20°C (68°F) in both cases.

OK
Refer to Checking the idle air control (IAC) valve control slide
NOT OK
Refer to Replacing idle air control (IAC) valve