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: 

• For -2004, see: CENTRAL ELECTRONIC MODULE (CEM), REPLACING
• For 2005-, see: CENTRAL ELECTRONIC MODULE (CEM), REPLACING .

Fig 1: Identifying Ohm Meter

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Relays And Terminals

Courtesy of VOLVO CARS CORPORATION

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  Refer to VERIFICATION