Checking the wiring and component

Check the Intake Air Temperature (IAT) sensor resistance.

Check the signal cable between control module terminal #A5 (#A5) and intake air temperature sensor terminal #1. Check for a short-circuit to ground.

HINT: With the ignition on and the intake air temperature (IAT) sensor connector disconnected, the voltage between terminal #1 and ground must be approximately 5 V. 

Remedy as necessary.

Other information 

• To connect the breakout box / access the control module, see Connecting the breakout box
• To access or replace the intake air temperature (IAT) sensor, see Temperature and pressure sensor, replacing
• For resistance values, see Component specifications
• For information about signals, see ELECTRICAL SYSTEM
• See Contents .

Fig 1: Identifying Camshaft Reset Valve Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Temperature Sensor - Intake (Turbocharged Engines Only, 2002-2004)

Courtesy of VOLVO CARS OF NORTH AMERICA.

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  Refer to Verification