4 TROUBLESHOOTING
12
ROS LED does
not turn on
Check for 12/24V at pin 3 of connector and ground at pin 8
ROS LED on permanently
Replace faulty ROS
Isolation switch trips
when ROS is connected
repair wiring and retest
Check switch control line is connected to pin 5 of
ROS connector
Dashboard lamp on permanently
Dashboard lamp does not turn on for 1 second when isolation switch
turned on.
ROS LED blinking
Check for blown
bulb
Check for LED on for 1 second after isolation
switch on
replace bulb and retest
Check for:
- short/open circuits on switch wiring - short/open circuits on lamp wiring
- ROS correctly latched down
- ROS securely mounted on vehicle
- ROS mounted horizontally - faulty battery (voltage < 9V)
Repair wiring, etc.
and retest
Isolation switch does not trip during ROS self-test
All OK
OK
OK
OK
Not OK
Not OK
Not OK
Not OK
ROS is OK