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Home >> Volvo >> 2012 >> XC90 Base, FWD >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Accessory Electronic Module (AEM) And Central Electronic Module (CEM) - Diagnostic Trouble Codes - 2 Of 2 >> CEM-8F25: Relay, Windshield Wiper. Signal Too Low. Permanent Fault (2003-2004) >> Signal Too Low. Permanent Fault >> Checking The Cables From The FUSEBOX To The Central Electronic Module (CEM)
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Checking The Cables From The FUSEBOX To The Central Electronic Module (CEM)

Remove windshield wiper relay 2/91 from the fusebox base.

Check the relay base terminals. Check for contact resistance and oxidation.

Check the cable between relay base 2/91 terminal #2 and central electronic module (CEM) terminal #13. Check for an open-circuit.

Install the relay.

Activate the relay.

Other information: 

Fig 1: Identifying Ohm Meter
GLL101042Courtesy of VOLVO CARS CORPORATION
Fig 2: Identifying Connectors
GLL106083Courtesy of VOLVO CARS CORPORATION

Was the function OK?