Dakota Digital 3X Series Installation And Operation Manual page 15

CHECK ENG (-)
The CHECK ENG terminal is used with fuel injection ECM's to display engine problems
and trouble codes. The CHECK input is activated by a ground signal from the ECM. Whenever
the check input is grounded, the system will display a flashing "E" in the upper left corner of the
message display.
When the ECM is placed into diagnostic mode, trouble codes can be read by counting
the flashes. Consult a service manual for the fuel injection system that you have for further
information on trouble codes.
With some ECM's, a 12 volt light bulb may need to be connected in addition to the
CHECK input in order to provide proper current loading. Connect one wire from the bulb to
keyed power and the other to the CHECK input. In this case, both the bulb and our display
system indicator would come on when the check engine wire is "active".
AUX. I/O
This jack is used to connect bus expansion modules (BIM). Do not attempt to plug in any
other device to this jack or damage to the control box will occur. This connector should be left
open, unless using a Dakota Digital product designed for it. Operation is discussed with BIM
units purchased separately.
DISPLAY RIBBON CABLE
This is where the grey cable from the display system plugs into the control box.
To connect the ribbon cable from the display system to the control box;
First open the two locking tabs on either side of the blue RIBBON CABLE connector.
Next align the red stripe in the ribbon cable with the "STRIPE" text on the control box.
Finally press the ribbon cable into the connector, press firmly to seat the connector.
The two locking tabs should "snap" into place securing the connector.
***Do NOT force the connector, if it is not inserting easily, check alignment of the red
stripe on the ribbon cable with the indicator on the control box.
Locking tabs CLOSED
RED STRIPE
Align stripe
Locking tabs OPEN
Ribbon cable connected
15
LOCKS
CLOSED
MAN 650067:G