User guide

96815 v.3.0 27
Six-Gun Troubleshooting
(No Banks iQ Installed)
If you feel that your Six-Gun Diesel
Tuner is not functioning properly,
some diagnostics can be performed.
Your Six-Gun Diesel Tuner is equipped
with diagnostic features that will
detect and display certain errors.
Remove the Six-Gun Diesel Tuner from
its mounting location while keeping all
connectors plugged in, and position
it in such a way that you can view
the end of the Six-Gun housing that
contains the LEDs from the driver’s
seat. Turn the vehicle key to the
ON position. Observe the two LEDs
mounted on the end of the Six-Gun
Diesel Tuner:
• A steady GREEN LED will illuminate
if all wire connections are correct,
the engine is running, and the engine
coolant temperature is within its
normal operating range.
Figure 18
Figure 17