Checking connector

Fig 1: Engine Start Verification

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Connector(s) Reinstallation

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.
• Check air conditioning (A/C) pressure sensor connector for contact resistance and oxidation according to Contact resistance and oxidation .
• Reinstall components, reconnect connectors etc.
• Ignition on.
• Read off air conditioning (A/C) pressure sensor signal.

  Check that the signal is within its permitted range. The voltage should be between 0.7 - 0.9 V.

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

Is the signal OK? 

• YES 

  Refer to Verification 

• NO 

  Refer to Checking wiring and components