Dakota Digital DHC 2000 User Manual

DHC-2000/DHC-2100 rev. C  
Digital Height Control System  
GREEN  
BROWN  
Left Front  
SEN-03-1  
Right Rear  
Bag  
SEN-03-1  
SEN-03-1  
Bag  
OPTIONAL  
REMOTE  
CONTROL  
ANTENNA  
Left Rear  
Bag  
PURPLE  
ORANGE  
SEN-03-1  
Right Front  
Bag  
ONLY USED WITH  
PRESSURE ONLY OR  
HEIGHT-PRESSURE  
COMBINATION  
Do not bundle or route the solenoid  
and sensor wires together!  
Dakota Digital  
DHC-2000  
DIGITAL HEIGHT  
CONTROL SYSTEM  
To FRONT air  
solenoid block  
RIGHT FRONT DOWN (+) GREEN  
LEFT FRONT DOWN (+) RED  
RIGHT FRONT UP (+) BLACK  
LEFT FRONT UP (+) WHITE  
Display  
RIGHT REAR DOWN (+) GREEN  
LEFT REAR DOWN (+) RED  
RIGHT REAR UP (+) BLACK  
LEFT REAR UP (+) WHITE  
To REAR air  
solenoid block  
CONNECT TO GROUND BLACK  
PARK/NEUTRAL INPUT (-) [ground if not used] WHITE/BLUE  
FUSED, CONSTANT 12 VOLT POWER RED  
FUSED, 12 VOLT ACCESSORY POWER YELLOW  
DISPLAY DIMMING INPUT (+) BLUE  
TANK PRESSURE SENDER GRAY  
ONLY USED WITH  
Air  
Tank  
SEN-03-5  
HEIGHT ONLY OR  
HEIGHT-PRESSURE  
COMBINATION  
GROUND  
LEFT FRONT  
RIGHT REAR  
HEIGHT SENSOR  
HEIGHT SENSOR  
RIGHT FRONT  
LEFT REAR  
HEIGHT SENSOR  
HEIGHT SENSOR  
Wiring Overview  
IMPORTANT: Make sure to always disconnect the negative cable from the battery if you are going to  
be working on or under the vehicle. Failure to do so can result in serious injury if the system is  
accidentally activated.  
MAN# 650031C  
1
OPERATION / PROGRAMMING  
The auto height control system is active when both the large red power wire and the yellow accessory power  
wire are on. When the accessory power is off the display and height control will shut down to prevent draining  
the battery.  
The display unit has a 2 line, full character display with three switches on the left side and four switches on the  
right side. The left side switches select the presets. The right side switches allow manual control, change the  
display, and are used for setup.  
Preset Select Switches  
Manual Control / Setup Switches  
MANUAL RAISE  
HI AUTO  
MID AUTO  
LO AUTO  
LEFT SWITCH  
RIGHT SWITCH  
MANUAL LOWER  
Changing the display:  
Pressing the left and right manual control switches at the same time will toggle the display between the height  
values, the tank pressure, and the corner pressures.  
Manual control:  
When manual control is active, the set of 4 manual control switches will be lit brightly. The function of these  
switches are as follows:  
Pressing the left or right switch will change which readings on the display that are  
highlighted(all four, front two, rear two, or individual)  
Pressing the top switch will raise the corners that are highlighted  
Pressing the bottom switch will lower the corners that are highlighted  
The Park/Neutral input (white/blue wire) is used to disable manual down when the vehicle is in gear. This  
should be connected to a vehicle wire that is grounded when the vehicle is in park or neutral (or to a Dakota  
Digital GSS-2000 output) where required by law. To disable this feature connect the white/blue wire directly to  
ground.  
If the down switch is pressed and the white/blue wire is not grounded the display will show “LOCK”.  
Auto control:  
The three switches on the left select the three preset heights: High, Medium, and Low. When one of the auto  
presets are active, that switch will be lit brightly. To select one of the presets, press the corresponding button.  
To change any of the 3 presets:  
Manually adjust the height and then press and hold the button for that preset (H, M, or L) for about 4  
seconds. The display will display “SET” and store the new setting.  
You can also do a bag dump by pressing the H and L switches at the same time for about 4 seconds. This will  
do a controlled dump to about 3-5% height.  
Tank Warning:  
The tank pressure has a user adjustable low warning point. If the tank pressure drops below the warning point  
the display will automatically switch to displaying the tank pressure and the number will flash.  
MAN# 650031C  
3
Manual Control / Setup Switches  
SETUP UP  
SETUP SELECT  
SETUP DOWN  
Setup Menus:  
To enter the setup mode, press and hold the Setup Select Switch while turning the key on. Use the top and  
bottom Setup Switches to scroll up and down through the menus. Use the Setup Select switch to select a  
menu item.  
The menus are:  
DONE  
REM  
-
-
-
-
-
-
-
exit the setup routine  
Remote system setup (operation mode and transmitter programming)  
Sensor programming (adjusting for mechanical arm travel)  
Solenoid control speed (to slow down fast air systems)  
Tank warning point setup  
Select operation mode when key is turned on.  
Advanced control setup options.  
SENSR  
SPEED  
WARN  
KEYON  
ADVNC  
Programming sensor travel:  
1. Begin with the key off and then hold the left Setup Select Switch in while turning the key on. The display  
will show (“CODE” “AC44B”, aluminum control case)( “CODE” “AC48”, plastic control case).  
2. Release the switch. The display will show “SETUP” “DONE”.  
3. Press the up or down Setup Switch until “SENSR” is displayed.  
4. Press and release the left Setup Select Switch switch. The display will toggle between “DUMP” “ALL” and  
“DONE” “PRS M”.  
5. Use the down Setup Switch to dump the air from all of the bags and then press the M switch (medium  
switch on left side of display)  
6. The display will now toggle between showing a number for each of the four corners, “RAISE” “ALL”, and  
“DONE” “PRS M”. Use the up Setup Switch to raise all bags to their full height. The numbers will begin  
increasing until they reach 100 and then it will stay at 100. If any bag does not get to 100 then that sensor  
may need adjustment to increase the arm travel.  
7. Press the left Setup Select Switch to control front only, the right Setup Select Switch to control rear only, or  
both left and right Setup Select Switches together to control all 4 corners.  
8. When all four corners are fully raised, press the M switch(medium switch on left side of display)  
9. The display will show “SETUP” “DONE”. Press the Setup Select Switch or turn the key off to exit.  
Changing the key on mode:  
When the key is turned on, the system can be set up to go to back to the last mode it was in before the key  
was turned off, it can always start up in the “M” (medium) auto mode, it can always do an auto raise to the “M”  
setting and then turn the auto mode off, or it can always start with the auto mode off.  
1. Begin with the key off and then hold the left Setup Select Switch in while turning the key on. The display  
will show (“CODE” “AC44B”, aluminum control case)( “CODE” “AC48”, plastic control case).  
2. Release the switch. The display will show “SETUP” “DONE”.  
3. Press the up or down Setup Switches until “KEYON” is displayed.  
4. Press and release the switch. The display will show “KEYON” and the current setting  
(“LAST”, “M”, “M OFF”, or “OFF”).  
5. Press the up or down Setup Switches to change the setting. When the desired setting is shown, press and  
release the left Setup Select Switch.  
6. The display will show “SETUP” “DONE”. Press the left switch or turn the key off to exit.  
MAN# 650031C  
4
Changing the output speed:  
The output speed can be used to slow down systems with large air lines or high pressure tanks so that  
the system will operate more reliably and stop at the desired height with minimal overshoot.  
1. Begin with the key off and then hold the left Setup Select Switch in while turning the key on. The display  
will show (“CODE” “AC44B”, aluminum control case)( “CODE” “AC48”, plastic control case).  
2. Release the switch. The display will show “SETUP” “DONE”.  
3. Press the up or down Setup Switch until “SPEED” is displayed.  
4. Press and release the left Setup Select Switch. The display will show “FRONT” “SPEED” and the current  
speed setting.  
5. Use the up or down Setup Switch to change the speed number from 1 to 15 with 15 being the slowest.  
When the desired value is shown press and release the left Setup Select Switch.  
6. The display will now show “REAR” “SPEED” along the current setting for the rear bags.  
7. Use the up or down Setup Switch to change the value and press and release the left Setup Select Switch  
when done.  
8. The display will show “SETUP” “DONE”. Press the left Setup Select Switch or turn the key off to exit.  
Changing the tank warning point:  
The tank warning point can be adjusted from 0 to 248 psi. When the tank pressure drops below this  
point the tank reading will flash and the display will automatically switch to the tank pressure display. If the  
tank pressure sender is disconnected this is disabled.  
1. Begin with the key off and then hold the left Setup Select Switch in while turning the key on. The display  
will show (“CODE” “AC44B”, aluminum control case)( “CODE” “AC48”, plastic control case).  
2. Release the switch. The display will show “SETUP” “DONE”.  
3. Press the up or down Setup Switch until “WARN” is displayed.  
4. Press and release the switch. The display will show “TANK” “WARN” and the current set point.  
5. Press the up or down Setup Switch to change the value. When the desired value is shown, press and  
release the left Setup Select Switch.  
6. The display will show “SETUP” “DONE”. Press the left Setup Select Switch or turn the key off to exit.  
The advanced control options:  
No changes will normally be made to these settings. There are four options under the advanced menu,  
“ADV TIME”, “ADV” “ERR”, “ADV F PSI”, and “ADV R PSI”. The time setting is the minimum time the controller  
must see a corner out of adjustment before it will try to make a correction. This time delay avoids nuisance  
corrections during acceleration, deceleration, and cornering. The error setting is the minimum error that a  
corner must have before it is seen as too low or too high. The F PSI and R PSI menus set limits when both  
pressure and height sensors are used together. They adjust how far the pressures are allowed to differ from  
side to side when trying to make corrections for height. Rigid frame vehicles may need to reduce the R PSI  
setting to keep the rear bags balanced on uneven ground.  
The remote setup options:  
The remote system setup requires the ARR-2000 remote system. This system plugs into a connector  
on the back side of the controller. The remote system is only operational when the key is turned off. The  
remote system has two modes of operation, one for individual corner control and another that controls the front  
bags together and the rear bags together (more information on remote system in the ARR-2000 manual).  
The REM selection has another set of menus underneath it. They are:  
MODE -  
PRGM -  
TEST  
select remote operation mode.  
program the key-chain transmitters into the system.  
-
test the operation of the key-chain transmitters.  
Troubleshooting guide.  
IMPORTANT: Make sure to always disconnect the negative cable from the battery if you are going to  
be working on or under the vehicle. Failure to do so can result in serious injury if the system is  
accidentally activated.  
MAN# 650031C  
5
Problem  
Possible cause  
Solution  
----------------------------------------------------------------------------------------------------------------------------------------------------  
Gauge will not light up  
(red light is off)  
RED wire does not have  
power.  
Connect to a location that has power.  
BLACK wire is not getting  
a good ground.  
Connect ground to a different location.  
Gauge will not light up  
(red light is flashing slowly)  
YELLOW wire does not  
have power.  
Connect to a location that has power  
with the key on.  
The key is not on.  
Display harness is unplugged.  
Gauge is damaged.  
The harness to the display is  
damaged.  
The ignition key must be turned on.  
Seat connectors in tightly at both ends.  
Return gauge for repair. (see instructions)  
Inspect harness, contact factory for  
additional checks or instructions.  
Connect wires from gauge to sender  
terminals.  
Gauge will not light up  
(red light is flashing rapidly)  
Gauge will not light up  
(red light is on steady)  
Gauge lights up, but  
displays “EE”.  
Sender is not connected  
to gauge.  
Wire between controller and  
sender is broken.  
Test and replace wire.  
Sender is not grounding  
properly.  
PSI senders ground through it’s mounting  
threads. Make sure the threads are  
clean. Do Not Use Tape or Sealant  
on Sender Threads.  
Controller is damaged.  
Sender is damaged.  
Sender wire is shorted to  
ground.  
Return gauge for repair. (contact factory)  
Return for replacement. (see instructions)  
Check wire for damaged insulation, replace  
if necessary.  
Gauge lights up, but  
displays “--”.  
Sender is damaged.  
Loose connection on  
power wire.  
Return sender for repair. (contact factory)  
Reconnect wire going to PWR terminal.  
Gauge lights up, but does  
not read correctly.  
Poor sender ground.  
Make sure sender case is getting a solid  
ground.  
Poor ground connection.  
Incorrect sender type.  
Move ground to different location  
Make sure sender has been replaced with  
the correct type.  
Display will not dim.  
Blue wire is not connected  
correctly.  
Check wiring connections.  
Gauge is damaged.  
Blue wire is getting power  
all of the time.  
Battery is very low.  
Gauge is damaged.  
10A fuse is blown.  
Return gauge for repair. (contact factory)  
Connect blue wire to a location that only  
has power when the headlights are on.  
Recharge or replace vehicle battery.  
Return gauge for repair. (contact factory)  
Replace fuse.  
Display remains dim at all  
times.  
Switches will not operate  
any of the solenoids.  
Compressor will not shut off.  
Tank reading incorrect  
(much higher than actual)  
Compressor wired incorrectly  
Check that 400PSI sensor (has 2 terminals)  
used on tank.  
Please consult service manual for the compressor  
to verify wiring.  
SERVICE AND REPAIR  
DAKOTA DIGITAL offers complete service and repair of its product line. In addition, technical consultation is available to help you work through any questions or  
problems you may be having installing one of our products. Please read through the Troubleshooting Guide. There, you will find the solution to most problems.  
Should you ever need to send the unit back for repairs, please call our technical support line, (605) 332-6513, to request a Return Merchandise Authorization  
number. Package the product in a good quality box along with plenty of packing material. Ship the product by UPS or insured Parcel Post. Be sure to include the RMA  
number on the package, and include a complete description of the problem with RMA number, your full name and address (street address preferred), and a telephone number  
where you can be reached during the day. Any returns for warranty work must include a copy of the dated sales receipt from your place of purchase. Send no money. We will  
bill you after repair.  
Dakota Digital 24 Month Warranty  
DAKOTA DIGITAL warrants to the ORIGINAL PURCHASER of this product that should it, under normal use and condition, be proven defective in material or  
workmanship within 24 MONTHS FROM THE DATE OF PURCHASE, such defect(s) will be repaired or replaced at Dakota Digital’s option.  
This warranty does not cover nor extend to damage to the vehicle’s systems, and does not cover removal or reinstallation of the product. This Warranty does not  
apply to any product or part thereof which in the opinion of the Company has been damaged through alteration, improper installation, mishandling, misuse, neglect, or  
accident.  
This Warranty is in lieu of all other expressed warranties or liabilities. Any implied warranties, including any implied warranty of merchantability, shall be limited to  
the duration of this written warranty. Any action for breach of any warranty hereunder, including any implied warranty of merchantability, must be brought within a period of 24  
months from date of original purchase. No person or representative is authorized to assume, for Dakota Digital, any liability other than expressed herein in connection with  
the sale of this product.  
4510 W. 61ST St. N., Sioux Falls, SD 57107  
Phone: (605) 332-6513 FAX: (605) 339-4106  
©Copyright 2005 Dakota Digital Inc.  
MAN# 650031C  
6

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