Banks Power Chevy_GMC Trucks: Duramax LLY-LBZ (Diesel ’06 - 07 6.6L) Speed Control- Banks Brake w_ Switch - Manual (Page 23)

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LED separates the sequences. The
LEDs will continue to flash to display
all the errors, and then repeat. Table
1 lists the common diagnostic codes.
For example, if a low relay voltage is
detected (code “2,3”) by the Banks
Brake, the following red and green LED
flashing sequence is observed when
the key is on:
(1) Two times flashing RED LED
(2) One time quick flashing GREEN LED
(3) Three times flashing RED LED
(4) One time longer flashing GREEN LED
The above flashing sequence will
repeat continuously. When the problem
is corrected, the diagnostic code will
be eliminated and replaced by a steady
green light. If problem persists, contact
Banks Technical Service.
Note: If multiple codes are set, they
will be displayed in a series separated
by the longer flashing green LeD. When
reading codes, make sure to watch
the entire series until you see the first
code repeat.
-END, SECTION 4-
Figure 20