Checking Components And Connectors

Check the boost pressure sensor connector. Check for contact resistance and oxidation.

Check that the boost pressure sensor is correctly installed and has not come loose.

HINT: The fault may be due to a defective boost pressure sensor. The boost pressure sensor may be defective if the above fault tracing and corrective action does not remedy the fault. 

Remedy as necessary.

Other information: 

• For B5xx4T, see TEMPERATURE AND PRESSURE SENSORS, REPLACING
• For B6xx4T, see TEMPERATURE AND PRESSURE SENSORS, REPLACING
• see CHECKING WIRING AND TERMINALS .

Fig 2: Identifying 4-Bit Connector

Courtesy of VOLVO CARS CORPORATION

Fig 3: Identifying Ohm Meter

Courtesy of VOLVO CARS CORPORATION

Fig 4: Identifying Boost Pressure Sensor

Courtesy of VOLVO CARS CORPORATION

Refer to VERIFICATION