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Home >> Volvo >> 2007 >> S60 Base, AWD >> Repair and Diagnosis (Single Page) >> Electrical >> Body Electrical >> Central Electronic Module (CEM), Rear Electronic Module (Rem), Upper Electronics Module (UEM) - Diagnostic Trouble Codes - 7 Of 13 >> CEM-6A04: Rear Right Door Locked. Signal Too Low. Permanent Fault (2001-2004) >> Signal too low. Permanent fault >> Checking Rear Right Door >> Checking Relay Supply
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Checking Relay Supply

Remove the locking relay (2/113).

Measure the voltage between 5 in the relay socket and ground.

The voltmeter should display battery voltage.

HINT: If the value is OK but the fault still remains, connect the contacts to the lock module and link between 3 and 5 in the relay socket to force-feed the lock motor while continuing to test. 

Additional information 

Fig 1: Identifying Voltmeter
GLL101041Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Relays
GLL104090Courtesy of VOLVO CARS OF NORTH AMERICA.

Does the voltmeter show the battery voltage?