Checking Components And Wiring

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Control Module Disconnected

Courtesy of VOLVO CARS CORPORATION

• Ignition off

  The diagnostic trouble code (DTC) can be caused by low coolant level.

  Check the coolant level.

  Check the connector on the radiator temperature sensor for contact resistance and oxidation.

  Check the radiator visually for external damage and wear.

  Check the radiator temperature sensor's installation on the radiator. It is fixed from factory and shall not be changed.

  Remedy as necessary.

  Other information 

  • see SIGNAL SPECIFICATION
  • see CHECKING WIRING AND TERMINALS
  Fig 3: Identifying Radiator Temperature Sensor

  Courtesy of VOLVO CARS CORPORATION

Was a fault detected? 

• YES 

  Refer to VERIFICATION 

• NO 

  Refer to REPLACING A COMPONENT