Troubleshooting - Advent ADV38 Installation Manual

Negative Switched Dome Lighting
To 12 pin
connector

Troubleshooting:

SYMPTOM:
No power at Video Monitor
Power but no video or sound
Red / black - Lamp on
Black / red - Lamp common
Purple / brown - Lamp Auto
Factory Door ajar
switch or Body
Control computer
REMEDY:
Verify +12 VDC on Red wire at 2 pin Power Harness
behind video monitor. Verify ground connection with
continuity test from known good ground to black wire at
2 pin Power Harness
Verify that the correct source is selected (i.e.: 1,2,3 or
4). Verify that the source is on and playing a known
good media (such as a videotape). Verify connections at
both ends of the source component harness.
11
To
constant
To
constant