Checking the connector

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
• Intake air temperature (IAT) sensor connector disconnected.

  Connect an ohmmeter between intake air temperature (IAT) sensor connector terminal #1 (control module side) and ground.

  Fig 3: Identifying Ohmmeter

  Courtesy of VOLVO CARS OF NORTH AMERICA.

The ohmmeter should read 3,000-4,500 Ω. 

• OK 

  Refer to Defective intake air temperature (IAT) sensor 

• NOT OK 

  Refer to Checking the cable