Signal too low: Verification

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

Fig 1: Identifying Ignition On Position

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Connectors

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off
• Reconnect connectors, reinstall components
• Ignition on
• Read off the heater element resistance in the front heated oxygen sensor (HO2S).

  The resistance should be 0.5-3 Ω at 20°C.

  Fig 3: Identifying VCT2000

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Is the value correct? 

• YES 

  VERIFIED:  Troubleshooting has been completed.

• NO 

  Refer to Information