Troubleshooting Quick Tips; Troubleshooting Guide - Dakota Digital GPS-50-2 Manual

Troubleshooting quick tips:

While the GPS-50-2 is operating, the dot in the upper left corner of the display will indicate the status. On steady
indicates it is powered up but not receiving any BIM bus activity. Flashing indicates it is communicating on the BIM bus.
A dot in the upper center indicates that it is receiving a valid GPS signal. A dot in the lower center indicates the
accelerometer is actively correcting the speedometer reading.
When the key is off the dot in the upper left corner will flash very slowly. If the switch on the GPS-50-2 is held, it will flash
rapidly indicating that the key is off.
To see the number of satellites being tracked, signal strength, speed, and heading on the GPS display, press and hold the
switch with the key on. It will toggle between displaying the number of satellites tracked followed by a dash (10-), the
signal strength followed by three dashes, current speed in km/h, and the heading in degrees.

Troubleshooting guide.

Problem
Sensor does not show on
gauge readout.
GPS will not light up at all.
Sensor does not show on
gauge readout.
GPS has a steady dot lit
Sensor does not show on
gauge readout.
GPS display is flashing
SPd, CL, CPS, or ALt
Speed always reads 0.
GPS has a flashing dot in
the upper left corner.
Speed always reads 0.
SPEED terminal is used
for connection.
Speed reading is incorrect.
Speed seems to lag or is
erratic.
Cruise control will not
engage.
Cruise control will not
hold a steady speed.
Possible cause
BATTERY terminal is not powered.
ACC PWR terminal is not powered.
GND terminal does not have a good
ground.
RED wire on BIM-xx-1 adapter
harness is not powered.
BLACK wire on BIM-xx-1 adapter
harness is not grounded.
Module is damaged.
Interface cable is not connected.
Interface cable is loose.
On VHX systems, the BIM display
for this channel is disabled.
Another BIM is set with the same
channel IDs.
Another BIM is set with the same
channel IDs.
GPS data is out-dated.
GPS receiver cannot get a signal.
Broken or loose wire connection.
Wire connected to the wrong output.
Output calibration is incorrect.
Speedometer output is set incorrectly.
Speedometer is not accurate.
Module is not mounted securely and is Mount the module securely using screws or hook and loop tape.
sliding around while driving.
The internal acceleration sensor needs Accelerate or decelerate in a straight line to allow the system to calibrate
to learn which direction is forward.
Speed output rate does not match.
Loose wire connection.
Cruise speed type is set incorrectly.
Speed output rate does not match.
Gain control on cruise incorrect.
GPS mounting location causing
degraded signal.
Speed signal wire is picking up noise.
Solution
Connect to a location that has power at all times.
Connect to a location that has power with the key on.
Connect to a different ground location.
Connect to a location that has power with the key on.
Connect to a solid vehicle ground location.
Return for service. (see instructions)
Connect the supplied power/data cable between the BIM unit and
the gauge control box.
Make sure both ends of the cable are seated in securely.
Follow instructions in VHX manual to enable the BIM display screen.
Test module works when connected to control box alone. Change ID's
on one of the modules so each module uses unique IDs.
Test module works when connected to control box alone. Change ID's
on one of the modules so each module uses unique ID's.
(SPD – speed, CL – clock, CPS – compass, ALT – altimeter)
If the constant power connection has been disconnected, it may take
5 – 15 minutes for it to get valid data from the satellites.
If the car is inside a garage or other structure it may not be able to receive
a signal from the satellites. Move the vehicle to an open area and retest.
Inspect and reconnect wires.
Switch between the #1 and #2 output types and retest.
See "Speedometer output setup" in the manual.
See "Speedometer output setup" in the manual.
Consult your speedometer manual to determine the calibration steps.
itself.
Change either the GPS-50-2 or cruise control speed pulse rate so they
match each other.
Inspect wiring connections.
Make sure the cruise control is set for an ECM type signal.
Change either the GPS-50-2 or cruise control speed pulse rate so they
match each other.
See cruise control manual to adjust gain or sensitivity.
Move the GPS-50-2 to a new location to minimize signal reflections.
Be sure to perform a reset after moving the unit.
Attach an external GPS antenna to the OPTIONAL ANTENNA jack
on the top of the GPS-50-2. The antenna can be secured to the
windshield or rear window for a clear view of the sky.
Isolate the speed signal wire from tachometer or motor wires.
7 MAN #650519:B