Digital | OBD2 | Troubleshooting guide | Digital OBD2 Troubleshooting guide

Digital OBD2 Troubleshooting guide
STA-1000
Speed/Tach Interface Module for OBD-II vehicle interface
Connect to vehicle
diagnostic port
STA-1000
www.dakotadigital.com
techsupport@dakotadigital.com
605-332-6513
OBDII
INPUT
GROUND
POWER
TACH 1
TACH 2
ENGINE
SPEED 2
SPEED 1
OBDII INTERFACE
VSS INPUT FROM TRANS
CRUISE 4K OUTPUT
OBD-II
Cruise Control 4k ppm output.
Vehicle speed signal from transmission.
setup/status switch
Connect to main
chassis ground
+12V
KEY ON POWER
(fused 5 - 20 AMP max)
Standard 0-12V tachometer output.
Optional
cruise control
connections.
High voltage tachometer output.
to engine lamp
keyed power
bulb
AC speedometer output.
Standard speedometer output.
This unit has an input to read engine information from vehicles using the GM 1996-up OBD-II protocol, Ford 1996-up
OBD-II protocol, some Chrysler 2000-up OBD-II protocol, or CAN OBD-II protocol. CAN OBD-II is used on all vehicles
2008 and newer and some vehicles from 2004 – 2008. It provides speedometer, tachometer, and engine indicator
outputs. Do not mount this in the module in the engine compartment; it should be mounted in interior of the vehicle.
Operation
The RPM and speed can be provided by this unit instead of trying to find a compatible connection somewhere in the
vehicle wiring harness. These outputs can be calibrated to match the gauge being connected.
The malfunction indicator lamp (MIL) or service engine soon indicator will be activated from the data bus when there is
an engine code set. This will not turn on the indicator for a lamp test function when the key is on, but the engine is not
running.
Since a cruise control will typically not work well with the speed data from the diagnostic bus, a connection is provided
to connect a VSS signal directly from the transmission and then provide a calibrated 4000 ppm output. The output is
self calibrated by reading the incoming transmission VSS signal and comparing it with the speed data from the
diagnostic bus.
MAN #650387
Setup Menu
-Id
61,62,F1,F2
CYL
4,6,8
CAL
3.0 – 20.0
ADJ
Cod
Rst
no,YES
set the J1850 device ID.
set the engine cylinder count
set the speedometer calibration
fine adjustment of the speedometer calibration
display the revision code
reset all settings to factory default values.
Tachometer Setup
• Hold the switch beside the STA-1000 terminal strip while turning the key on. The display will show “888” while
this is held.
• Release the switch. The display will show “-ID”.
• Press and release the switch until “CYL” is shown.
• Press and hold the switch until “ -ñ” is shown.
• Release the switch. The current engine cylinder setting will be shown: 4, 6, or 8. The tachometer output will
also be generating a 2000 rpm signal to verify the reading on your gauge.
• Press and release the switch to change the setting.
• Press and hold the switch until “ -ñ” is shown to save the setting.
• Release the switch.
• Turn the key off to exit.
Speedometer Setup
There are two methods of setting or calibrating the speedometer. The first is “CAL” and this allows you to select a
signal from 3,000 – 20,000 pulse per mile calibration in steps of 1,000. The second is “ADJ” and this allows the signal
to be finely adjusted up or down.
“CAL” Setup
• Hold the switch beside the STA-1000 terminal strip while turning the key on. The display will show “888” while
this is held.
• Release the switch. The display will show “-ID”.
• Press and release the switch until “CAL” is shown.
• Press and hold the switch until “ -ñ” is shown.
• Release the switch. The current speedometer calibration setting will be shown. The speedometer output will
also be generating 60 mph (96 km/h) signal to verify the reading on your gauge.
• Press and release the switch to change the setting from 3.0 – 20.0 (3,000 – 20,000 ppm).
• Press and hold the switch until “ -ñ” is shown to save the setting.
• Release the switch.
• Turn the key off to exit.
“AdJ” Setup
• Hold the switch beside the STA-1000 terminal strip while turning the key on. The display will show “888” while
this is held.
• Release the switch. The display will show “-ID”.
• Press and release the switch until “AdJ” is shown.
• Press and hold the switch until “ -ñ” is shown.
• Release the switch. “ADJ” will be shown and the speedometer output will also be generating 60 mph (96
km/h) signal to verify the reading on your gauge.
• Press and hold the switch to change the speedometer signal. It will alternate between increasing the signal
and decreasing the signal each time you press the switch.
• After four seconds of not pressing the switch, it will save and exit the adjust setting.
• The display show “CoD”.
• Turn the key off to exit.
MAN #650387
Id Setup
When using the pre-CAN bus GM J1850 or Ford J1850 protocols the unit must have a unique ID to identify itself on the
bus. By default this is set to use a gauge display panel bus ID and should not normally need to be changed. If there is
some other module already using this ID, then another can be selected. Some Chrysler vehicles may require F1 or F2
ID’s to be selected for proper operation. 61 and 62 are gauge ID’s and F1 and F2 are scan tool ID’s.
To set or change the diagnostic bus ID numbers:
• Hold the switch beside the STA-1000 terminal strip while turning the key on. The display will show “888” while
this is held.
• Release the switch. The display will show “-ID”.
• Press the switch. The BIM display will show the currently selected bus ID.
• Release the switch.
• Press and release the switch to change the setting from 61, 62, F1, or F2.
• Press and hold the switch until “ -ñ” is shown to save the setting.
• Release the switch.
• Turn the key off to exit.
Troubleshooting quick tips:
While the BIM is operating, the dot in the upper left corner of the display will indicate the status. On steady indicates it
is powered up and there is no signal on the VSS input. Flashing indicates it is receiving a signal on the VSS input. A
dot in the upper center indicates that there is an engine code set (MIL active).
If the display is sequencing through “-J-”, “-F-”, and “-C-” then it is scanning to try and communicate with the vehicle
bus but cannot get an answer.
To see the signal and channel status on the BIM display, press and hold the switch. If “BUS” is shown, the module
cannot communicate with the vehicle. The display will cycle through several screens. The first will show the bus type
(“J” for GM or Chrysler J1850, “F” for Ford J1850, “C” for CAN) and the number of control modules answering. The
next screens will indicate speed and rpm. “r1.5” for 1,500 rpm and “ 96” for 96 km/h speed.
Troubleshooting guide.
Problem
Outputs do not work and
the display will not light
up at all.
Possible cause
Solution
PWR terminal does not have power.
Connect to a location that has power.
GND terminal does not have a good
Connect to a different ground location.
ground.
Module is damaged.
Return for service. (see instructions)
Outputs do not work and
OBD-II Interface cable is not connected. Connect the supplied OBD-II cable between the STA-1000 unit and
the display is scanning
the vehicle diagnostic plug.
“J”, “F”, “C”
The vehicle bus is not compatible.
Vehicles using the ISO 9141-2 protocol are not compatible with the
STA-1000. This includes some Chrysler and many import vehicles.
Gauge does not read.
Broken or loose wire connection.
Inspect and reconnect wires.
STA-1000 has a steady
Wire connected to the wrong output.
Switch between the #1 and #2 output types and retest.
or flashing dot lit.
Output calibration is incorrect.
See “Tachometer Setup” or “Speedometer Setup” in the manual.
Gauge operates, but does
Loose connection on sensor wires.
Inspect and reconnect wires.
not read correctly.
Output calibration is incorrect.
See “Tachometer Setup” or “Speedometer Setup” in the manual.
Cruise control will not engage. VSS signal is not connected from
Inspect and reconnect wires.
Display has steady dot.
the transmission.
Cruise control will not engage. The vehicle must be driven once to
Drive the vehicle at 30 – 45 mph, stop and shut it down, retest the
Display has a flashing dot.
allow the output to be calibrated.
cruise control.
Cruise control speed input is incorrect. Set the cruise control for a 4000 (4k) ppm signal.
MAN #650387
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 Limited Lifetime 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 for the lifetime of the original
vehicle it was installed in, 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. 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.
MAN #650387
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