Checking Intake System

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS CORPORATION

• Ignition off.

  Check the air intake and exhaust system for blockage.

  Check that the exhaust system is leak free.

  Check that the components for the fuel driven additional heater are correctly located and are complete.

  Corrective actions 

  1. Remove any blockage.
  2. In case of exhaust escape by the clamp, tighten the clamp or replace the component. Otherwise, in case of leakage, replace the exhaust system.
  3. Remove any blockage. Otherwise replace the intake system.
  4. In case of incomplete components. In case of incorrect positioning of component.

  Other information: 

  • see LOCATION OF COMPONENTS
  • see FUEL-POWERED PREHEATER, CHECKING
  • see FUEL FIRED BOOSTER HEATER
  Fig 2: Identifying Booster Heater

  Courtesy of VOLVO CARS CORPORATION

Has the fault been remedied? 

• YES 

  Refer to VERIFICATION 

• NO 

  Refer to CHECKING FLAME SENSOR