Checking the Control Module For Short-Circuits

Measure the resistance between terminal #2 and ground when the relay driver is active. The resistance should be high when the relay driver is active. Replace the control module if the resistance is low.

Other information: 

• To access or replace the central electronic module (CEM), see Central Electronic Module (CEM), Replacing .

Fig 1: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Relays And Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

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  Refer to Verification