Checking The Connector

Fig 1: Identifying Ignition ON

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Fig 2: Connecting Connector

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• Ignition off
• Check the boost pressure sensor connector. Check for contact resistance and oxidation.
  NOTE:

  The intake air temperature (IAT) sensor is integrated in the boost pressure sensor

• Reinstall the components, reconnect the connectors etc.
• Ignition on
• Read off the intake air temperature (IAT).

  Check that the intake air temperature (IAT) is within its permitted range. If the intake air temperature (IAT) is now within its permitted range, the fault was caused by loose connections in the connector.

  Other information: 

  • For B5xx4T, see TEMPERATURE AND PRESSURE SENSORS, REPLACING
  • For B6xx4T, see TEMPERATURE AND PRESSURE SENSORS, REPLACING
  Fig 3: Identifying 4-Bit Connector

  Courtesy of VOLVO CARS CORPORATION
  Fig 4: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

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  Fig 5: Identifying Boost Pressure Sensor

  Courtesy of VOLVO CARS CORPORATION

Is the temperature within its permitted range? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to CHECKING THE WIRING AND COMPONENT