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Home >> Volvo >> 2004 >> S80 Base, 2.5 59, FWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Cables And Fuses - Symptom Related Diagnostic Procedures - 1 Of 2 >> Checking Rest Current (2005-2006) >> Checking rest current >> Fault tracing by successive elimination

Fault tracing by successive elimination

During fault tracing by successive elimination, try to localize the problem by measuring the power consumption at the same time as removing one fuse at a time in the vehicle.

Procedure 

Expose the integrated relay/fusebox in the engine compartment and the fuses in the Central electronic module (CEM).

Use the multimeter and check that the relays and fuses have the correct voltage. Measure between fuses and suitable ground terminals. If any problem is detected, troubleshoot the system in question.

Remove a fuse and read off the standby consumption according to the instructions above. If the power consumption has dropped to less than 25 mA, fault trace the system that the fuse corresponds to. If the power consumption has not dropped, reinstall the fuse and repeat the procedure with another fuse.

NOTE: The vehicle is woken from "sleep mode" when certain fuses are affected. If this is the case, repeat the preparations for standby measurement before continuing successive elimination.

If the fault has not occurred, continue with successive elimination on relays and the connectors for the vehicle's control modules.

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