Checking manifold absolute pressure (MAP) sensor signal

Fig 1: Identifying Ignition Switch ON Position

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Connector(s) Reinstallation

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.
• Reinstall components, reconnect connectors etc.
• Ignition on.
• Read off the manifold absolute pressure (MAP) sensor signal.

  Check that the signal is within its permitted range. The manifold absolute pressure (MAP) sensor signal voltage is compared to the table value:Air pressure sensor intake manifold (MAP) .

  If signal is now OK this indicates that the fault was caused by poor contact in the connector.

  Other information: 

  • For information about signals, see Signal specification .
  • Manifold Absolute Pressure Sensor (MAP Sensor), table values, see Air pressure sensor intake manifold (MAP) .
  Fig 3: Identifying VCT2000 Diagnostic Tool

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Is the signal OK? 

• YES 

  Refer to Verification 

• NO 

  Refer to Checking wiring and components