Checking wiring

Check the signal cable between the engine control module (ECM) terminal 48 and the intake air temperature (IAT) sensor terminal 1 for an intermittent short-circuit to ground and remedy according to Short-circuit to ground, intermittent faults .

Other information 

• To connect the breakout box, see Connecting the breakout box. EMS 2000
• To replace the mass air flow (MAF) sensor, see Replacing the intake air temperature sensor .

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.

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