Pioneer AVIC-D3 Owner's Manual - Page 144

NAVI/AV 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 comprehensive, it should answer your most common problems. If a solution to your problem cannot be found here, contact your dealer or the nearest authorized Pioneer service facility. Problems in the navigation screen Symptom Power doesn't turn on. The unit doesn't operate. When the ignition switch is turned ON (or turned to ACC), the motor sounds. You cannot position your vehicle on the map or the positioning error is large. Cause Leads and connectors are incorrectly connected. The fuse is blown. Noise and other factors are causing the built-in microprocessor to operate incorrectly. The navigation system confirms whether a disc is loaded or not. Action (See) Confirm once more that all connections are correct. Rectify the reason for the fuse blowing, then replace the fuse. Be very sure to install a correct fuse with the same rate. Press the RESET button. (➞ Refer to page 140 in this manual.) This is a normal operation. The quality of signals from the GPS satellites is poor, causing reduced positioning accuracy. Such a loss of signal quality may happen for the following reasons: • The GPS antenna is in an unsuita- ble 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 satellites are operated by the US Department of Defense, and the US government reserves the right to distort positioning data for military reasons. This may lead to greater positioning errors.) • If a vehicle phone or cellular phone is used near the GPS antenna, GPS reception may be lost temporarily. Something covers the GPS antenna. Signals from the vehicle's speed pulse are not being picked up properly. The navigation system may not be mounted securely in your vehicle. Check the GPS signal reception (➞ Page 68) and the position of the GPS antenna if necessary, or continue driving until reception improves. Keep the antenna clear. Do not cover the GPS antenna with spray paint or vehicle wax, because this may block the reception of GPS signals. Snow buildup can also degrade the signals. Check that the cables are properly connected. If necessary, consult the dealer that installed the system. Check that the navigation system is securely mounted and, if necessary, consult the dealer that installed the system. Appendix 142