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Section 3
TROUBLESHOOTING
Normal Operation
Your Derringer Tuner has a built-in,
self-diagnostic system. The status of
the diagnostic system is communicated
via the LED on the module. When
the Derringer module is functioning
properly the LED will flash green.
Derringer Not Powered
When the LED is not illuminated, the
Derringer module is not powered on.
If the ignition is on and the LED is not
illuminated, check the connections at
the vehicle sensors and ensure they are
fully engaged.
No Communication with iDash 1.8
Check that your wiring matches
the "Wiring Diagram – iDash 1.8". A
common error is that the wrong cap
is attached to the Derringer. A BLACK
termination cap must be connected
to the Derringer and one an in-cab
termination cable should be attached to
one of the iDash 1.8s.
LED Error Code
When faults are detected, the Derringer
module will flash a diagnostic code.
These diagnostic codes are comprised
of 2 digits. Each digit is expressed by
the flashing red LED.
24
97282 v.3.0
A code can be determined by counting
the number of red flashes displayed
before the LED flashes green. This is the
first digit. The number of red flashes
after the LED flashes green is the
second digit. After the diagnostic code
is displayed, additional codes will be
displayed in sequence.
Once all codes are displayed the system
we begin sending the codes again. The
display of the codes is separated by
a longer period of the LED not being
illuminated. Once you have written
down all diagnostic codes being
displayed, consult the following tables
for a description of the code along with
the action to be taken.
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