Honda Accord 2008 Manual page 2572

07/11/02 09:52:59 61TA0000_230_0128
The accuracy of GPS is reduced during these instances:
• Metallic window tinting above the GPS antenna.
• When only three or less satellite signals can be
received (Four satellite signals are required for
accurate positioning).
• When driving near high tension power lines.
• When the satellite control centers are experiencing
problems.
Muting Logic
Whenever the navigation system is giving guidance,
the front speakers are muted. When the voice control
system is being used, all of the speakers are muted. If
the HandsFreeLink is in use, the voice control system is
unavailable and a message appears onscreen.
LCD Display Unit Limitations
NOTE: The screen is not touch sensitive. Use the
interface dial and buttons to select items on the screen.
• In cold temperatures, the display may stay dark for
the first 2 or 3 minutes until it warms up.
• When the display is too hot because of direct summer
sunlight, it will remain dark until the temperature
drops (you may see an error message displayed
stating this fact).
• When the humidity is high and the interior
temperature is low, the display may appear cloudy.
The display will clear up after some use.
• Fingerprints on the screen may be noticeable. Clean
the screen with a soft, damp cloth. You may use a
mild cleaner intended for eye glasses or computer
screens. To avoid scratching the panel, do not rub too
hard or use abrasive cleaners or shop towels.
Symptom Duplication
• When the symptom can be duplicated, verify that it is
not a characteristic of the system. Review the
navigation system manual and compare it to a
known-good vehicle (with the same software and
database), under the same conditions. If the
symptom is not the same as the known-good, follow
the self-diagnostic procedures and the appropriate
troubleshooting procedures.
• When the symptom does not reappear or only
reappears intermittently, ask the customer about the
conditions when the symptom occurred.
– Always ask the customer to demonstrate the
problem.
– Try to establish possible user error or
misunderstanding of the system.
– Try to establish if outside interference may have
been the cause.
– Try to duplication the symptom under the same
conditions the customer experienced.
– Vibration, temperature extremes, and moisture
(dew, humidity) are factors that are difficult to
duplicate.
– Inspect the vehicle for after-market electronic
devices (vehicle locators, amps, radar detectors,
etc.) that may be hidden.
When troubleshooting navigation system problems,
ensure that the known-good vehicle is the same
software version year and model as the vehicle being
serviced. Mixing incompatible navigation DVDs or
other system components can delay the
troubleshooting process by creating symtoms or issues
causing effects unrelated to the original problem.
(cont'd)
23-127