17
CMR322
OPERATION
Troubleshooting
General
Problem
Cause
Action
Unit will not turn on
(no power)
Yellow wire not connected or incorrect voltage
Red wire not connected or incorrect voltage
Check connections for proper voltage (11~16VDC)
Black wire not connected
Check connection to ground
Fuse blown
Replace fuse(s)
Unit has power
(but no sound)
Speaker wires not connected
Check connections at speakers
One or more speaker wires touching each
other or touching chassis ground
Insulate all bare speaker wires from each other and
chassis ground
Unit blows fuse(s)
Yellow or red wire touching chassis ground
Check for pinched wire
Speaker wires touching chassis ground
Check for pinched wire
Incorrect fuse rating
Use fuses with correct rating
Unit has audio
(but no video)
Parking brake safety circuit not connected
Parking brake not applied
Check connections at parking brake
Apply parking brake as described
on page 26
No video display
(when in reverse)
Reverse circuit not connected
Vehicle is not in reverse
Check connections at reverse lamp
Select reverse gear
IR remote does not work
Dead battery
Replace battery
