Checking The Sensor

Fig 1: Checking Traffic Load On CAN Cables

Courtesy of VOLVO CARS CORPORATION

Power Operated Tailgate Module (POT) checks the hydraulic operation of the tailgate with a hall sensor. Hall sensor shall only be active when there is over-pressure in the hydraulic system, e. g., in case of clamping something or just when the tailgate reaches completely open position.

Check hall sensor by:

• Ignition on.
• Click on the symbol for VCT2000 and read out status for hall sensor.
• If status for hall sensor shows short-circuiting or open circuit the next two steps can be skipped.
• If status for hall sensor shows active, when the hydraulic motor is not run, the hydraulic pump is damaged. Then replace Power Operated Tailgate Module (POT) and its hydraulic parts.
• Check that the hall sensor works by closing the tailgate and hold down until it opens again. Status shall change just before the tailgate opens again.

Other information 

• see LOCATION OF COMPONENTS
• see POWER LIFTGATE MODULE
• see LOAD SENSOR, TAILGATE
• see LUGGAGE COMPARTMENT LID LIFT CYLINDER (2008) or LUGGAGE COMPARTMENT LID LIFT CYLINDER (2009-2010)

Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

Courtesy of VOLVO CARS CORPORATION

Does the sensor work? 

• YES 

  Refer to VERIFICATION 

• NO 

  Refer to CHECKING THE COMPONENTS AND WIRING