Dakota Digital VHX systems, Installation And Operation Manual

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MAN 650314C 32
Symptom Possible Problem Solution
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The check engine
The Engine Control Module Connect a light or similar load
indicator stays on (ECM) needs to see the to the ECM along with the
all of the time. load of a light connected to it. control box.
The Function switches
The push-button switches are Momentary push-button or toggle
do not operate not connected to the control switches must be connected to
properly. box. the SW1 and SW2 terminals
as described in the manual.
The wrong type of switch is The switch terminal connected
being used. to the control box should
normally be open. When the
the switch is activated, the
terminal should make contact
to ground.
The display system starts
SW 2 terminal is constantly Disconnect or replace the
up in the demonstration connected to ground. SW2 switch.
mode and remains in it.
The clock doesn’t keep
Constant power terminal is Ensure constant power terminal
time. loosing power. has 12v even when key is off.
Display is too dark or light.
Contrast need to be adjusted. See manual for contrast adjusting
instructions.
VHX Series Specifications
SUPPLY
Voltage Range(BAT) 8 to 22 V
Ignition > 8 V
INPUTS
Active High
Low Max Min High
High, Left, Right,
Gear, Wait, DIM
3.7 V 8.4 V
Active Low
Low Max Min High
SW1,SW2, Check 2.7 V 6.0 V
Brake, Cruise, 4 X 4 3.7 V 8.4 V
Tachometer
Setting Low Max High Min
Normal 3.0 V 7.6 V
Low-Volt 0.9 V 4.1 V
Speedometer
Square Wave Sin Wave
> 1.2 V
P-P
> 1.4 V
P-P
OUTPUT
WARN, SPD < 600 mA
Current Draw
IGN Off
≈
0.3 mA
IGN On, LIGHT Off
≈
101 mA
IGN On, LIGHT On
≈
280 mA