Checking wiring and terminals

Check the cable between intake air temperature (IAT) sensor connector terminal #1 (engine control module (ECM) side) and engine control module (ECM) terminal #48. Check for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .

Remedy as necessary.

Fig 1: Identifying Intake Air Temperature (IAT) Sensor Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Voltage Display

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying EMS2000

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Continue 

  Refer to Verification 

Check the cable between intake air temperature (IAT) sensor connector terminal #1 (engine control module (ECM) side) and engine control module (ECM) terminal #48. Check for an open-circuit according to Open-circuit, permanent faults .

Check the cable between intake air temperature (IAT) sensor connector terminal #2 (engine control module (ECM) side) and engine control module (ECM) terminal #79. Check for an open-circuit according to Open-circuit, permanent faults .

Remedy as necessary.

Fig 1: Identifying Intake Air Temperature (IAT) Sensor Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying EMS2000

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Continue 

  Refer to Verification