Operation Manual

61
Appendix
Vehicles that Cannot Obtain
Speed Pulse Data
❒ The speed pulse data comes from the speed
sensing circuit. The location of this speed
sensing circuit depends on your vehicle
model. In some cases, it is impossible to
make a connection to it, and in such a case
we recommend that the ND-PG1 speed pulse
generator (sold separately) be used.
Conditions Likely to Cause
Noticeable Positioning Errors
For various reasons such as the state of the road
you are travelling on and the state of reception of
the GPS signal, the actual position of your vehicle
may differ from the position displayed on the map
screen.
Some types of vehicle may not output a speed
signal while driving at just a few kilometres per
hour. In such a case, the current location of your
vehicle may not be displayed correctly while in a
traffic jam or in a car park.
Troubleshooting
If you have problems operating your Navigation
System, refer to this section. The most common
problems are listed below, along with likely
causes and solutions. While this list is not com-
prehensive, it should answer your most common
problems. If a solution to your problem cannot be
found here, contact your dealer or the nearest
authorised Pioneer service facility.
You cannot position your vehicle on the
map or the positioning error is large.
Possible causes:
(1) The quality of signals from the GPS satellites
is poor, causing reduced positioning accu-
racy.
Such a loss of signal quality may happen for
the following reasons:
•The GPS aerial is in an unsuitable location.
•Obstacles are blocking signals from the
satellites.
•The position of satellites relative to your
vehicle is bad.
•Signals from the GPS satellites have been
modified to reduce accuracy. (GPS satel-
lites are operated by the US Department of
Defense, and the US government reserves
the right to distort positioning data for mili-
tary reasons. This may lead to greater posi-
tioning errors.)
•If a vehicle phone or cellular phone is used
near the GPS aerial, GPS reception may be
lost temporarily.
•Do not cover the GPS aerial with spray
paint or car wax, because this may block
the reception of GPS signals. Snow buildup
can also degrade the signals.
(2) Signals from the vehicle’s speed pulse are
not being picked up properly.
(3) The main unit may not be mounted securely
in your vehicle.
(4) Your vehicle is operating in Simple hybrid
mode.
(5) Setting of the Installation direction lever is
wrong.
(6) Main unit is installed with an extreme angle
exceeding the limitation of the installation
angle.
(7) Indication of the position of your vehicle is
misaligned after a U-turn or reversing.
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