Checking Control Module For Open-Circuits

Remove relay 2/119.

Check the driver circuit for the relay coil for an intermittent open-circuit as follows:

Measure the voltage between terminals #1 and #2 on the relay base.

See Checking wiring and terminals. Intermittent faults

Activate the relay driver for the right rear window down: Click on the VCT2000 symbol.

HINT: The voltage between terminals #1 and #2 should be battery voltage. 

If the value deviates significantly, check voltage between #2 and battery voltage as well as between #1 and ground. Both shall be equal to battery voltage. Check for an intermittent open-circuit. Checking wiring and terminals. Intermittent faults Do not forget to check that the power supply to the control module is OK.

Other information 

• See Central electronic module (CEM), replacing

Fig 1: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Relays

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Continue 

  Refer to Information