Dual DVM179, Installation & Owner'S Manual

Page: 20 / 22

19
DVM179 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