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 the integrated relay / fusebox in the cargo compartment, see Integrated relay/fuse box cargo compartment/rear electronic module, replacing .

Fig 1: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

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  Refer to Verification