Current 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 the connectors, reinstall components etc.
• Start the engine and let it idle.
• Read off front heated oxygen sensor (HO2S) signal.

  Check that the signal is within its permitted range according to Signal specification .

  Fig 3: Identifying Heated Oxygen Sensor Terminal Connectors

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

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Is the signal OK? 

• YES 

  VERIFIED:  Troubleshooting has been completed.

• NO 

  Refer to Information