Checking the control module for short-circuits

Activate the relay driver.

Measure the resistance between terminal #2 and ground when the relay driver is active.

The resistance must be low when the relay driver is active.

Remedy as necessary.

Other information 

• To access and replace the relay, see Central electronic module (CEM), replacing
• For further information about the fuses and relays, see the appropriate SYSTEM WIRING DIAGRAM article.

Fig 2: Identifying VCT2000

Courtesy of VOLVO CARS OF NORTH AMERICA.

Refer to Verification