LEMON Manuals: Even more car manuals for everyone
Home >> Volvo >> 2003 >> XC90 T-6 >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> AEM, CEM, And AUU - Diagnostic Trouble Codes >> CEM-1A05: 30 Power Supply. Signal Too Low. Permanent Fault (2003-2004) >> Signal Too Low. Permanent Fault >> Checking The Power Supply

Checking The Power Supply

Check the voltage to ground at the following points: 

The voltage must be at least battery voltage minus three volts.

Check for contact resistance and oxidation at the fuses.

Remedy as necessary.

Fig 1: Identifying Voltage Display
GLL101041Courtesy of VOLVO CARS CORPORATION
Fig 2: Fuse Holder (Passenger Compartment)
GLL104037Courtesy of VOLVO CARS CORPORATION

Was a fault detected?