Checking connector

Fig 1: Engine Start Verification

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Connectors

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off
• Check mass air flow (MAF) sensor connector for contact resistance and oxidation according to Contact resistance and oxidation .
• Reinstall components, reconnect connectors etc.
• Ignition on.
• Check that the air flow corresponds, the value should be approximately 0 kg/h with engine switched off.
• Start the engine and read off the air flow which should be approximately 14 kg/h (30.9 lb) when idling.
• Increase the engine speed (RPM) and check that the air flow increases with increased engine speed.

  If the values correspond it means that the cause of the fault has been loose connections in the connector.

  Other information 

  • To access/replace the mass air flow (MAF) sensor, see Mass air flow sensor (MAF), replacing .
  Fig 3: Identifying Connector

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 4: Identifying VCT2000

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Is the function OK? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to Checking component and wiring