Checking Sun Sensor Signal

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition on
• Go into scrolling values.
• Read off sun sensor signal.

  Mask the sun sensor, and read the value. Remove masking and aim a strong light source at close range at the sun sensor.

  NOTE: The value from the sun sensor is updated slowly, so keep the masking/light source in place for approximately 20 seconds.

  Check that the value changes.

  Fig 2: Identifying Sun Sensor

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 3: Identifying VCT2000

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Does the sun sensor value change? 

• YES 

  FAULT NOT FOUND:  Troubleshooting has been completed.

• NO 

  Refer to Checking Cables