Signal too low: Verification

HINT: After carrying out the repair, check that the fault has been remedied. 

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.
• Reconnect connectors, reinstall components
• Start the engine and let it idle.
• Read off the lambda value for the rear heated oxygen sensor (HO2S).
  NOTE: It takes approximately 25 seconds before fuel trim starts.

  Check that the value is within its permitted range. The value should be approximately 0.98-1.02.

  Fig 3: Identifying VCT2000 Diagnostic Tool

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Is the value OK? 

• YES 

  VERIFIED:  Troubleshooting has been completed.

• NO 

  Refer to Information