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Home >> Volvo >> 2004 >> XC90 Base, AWD >> Repair and Diagnosis (Single Page) >> Electrical >> Body Electrical >> Central Electronic Module (CEM) - Diagnostic Trouble Codes - 1 Of 7 >> CEM-1A56: Communication With The Driver Information Module (Dim). Signal Missing (2003-2004) >> Signal Missing >> Checking The Power Supply And Ground For The Driver Information Module (Dim)
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Checking The Power Supply And Ground For The Driver Information Module (Dim)

Check the fuse in the passenger compartment fusebox for the power supply relay for the driver information module (DIM).

NOTE:

If the fuse has blown, check the circuit after the fuse before replacing the fuse. Check for a short-circuit to ground. Then replace the fuse.

Check the cable between the fusebox and the power supply relay for the driver information module (DIM). Check for an open-circuit.

Check the cable between the power supply relay and the driver information module (DIM). Check for an open-circuit.

Check the ground lead between the driver information module (DIM) and the ground terminal. Check for an open-circuit. Also check the ground terminal. Check for contact resistance and oxidation.

Check the connector and the cable harness behind the dashboard. Check for damage.

Remedy as necessary.

Other information: 

Fig 1: Breakout Box
GLL100304Courtesy of VOLVO CARS CORPORATION
Fig 2: Identifying Ohm Meter
GLL101042Courtesy of VOLVO CARS CORPORATION
Fig 3: Fuse Holder (Passenger Compartment)
GLL104037Courtesy of VOLVO CARS CORPORATION

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