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Trouble diagnoses
NAEL0427
SYMPTOM CHART
NAEL0427S01
Symptom Diagnoses/service procedure
Reference
page
Any function of the system
does not operate.
Check power supply and ground circuit for display & NAVI control unit. EL-441
Strange screen color or
unusual screen brightness.
1. Check “DISPLAY SETTING”. EL-432
2. Check display in “Diagnosis of Display” MODE. —
The display is not dimmed
when turning lighting switch
to ON.
1. Check “DISPLAY SETTING”. EL-432
2. Check lighting switch signal input to display & NAVI control unit correctly in
“DIAGNOSTIC SIGNAL FROM THE CAR” MODE.
EL-424
No navigation guide voice
are heard from both front
speakers.
1. Check “Voice Guidance Setting”. —
2. Check voice guide operation. EL-442
Beep does not sound when
the system guides route.
Check “BEEP ON/OFF SETTING”. EL-432
Position marker does not
trace along the route being
traveled.
Go to “WORK FLOW FOR NAVIGATION INSPECTION”. EL-439
Position marker does not
indicate forward or backward
movement.
Check reverse signal input to display & NAVI control unit correctly by “DIAGNOS-
TIC SIGNAL FROM THE CAR” MODE.
EL-424
Radio wave of GPS cannot
be received. (GPS marker
on the display does not
become green color.)
1. Is there anything obstructing the GPS antenna on the rear parcel finisher?
(GPS antenna located under the rear parcel finisher.)
—
2. Check GPS radio wave receive condition in “GPS INFORMATION SETTING”. EL-430
3. Check GPS antenna in “Self Diagnosis”. EL-417
Heading direction of position
marker does not match
vehicle direction.
1. Perform “ADJUST CURRENT LOCATION” SETTING. EL-431
2. Go to “WORK FLOW FOR NAVIGATION INSPECTION”. EL-439
Stored location in the
address book and other
memory functions are lost
when battery is disconnected
or becomes discharged.
Stored location in the address book and other memory functions may be lost if the
battery is disconnected or becomes discharged. If this should occur, charge or
replace the battery as necessary and re-enter the information.
—
Map appears grey and can-
not be scrolled.
The current location in the memory is out of the map data area.
Perform “Initialize Location”.
EL-454
NAVIGATION SYSTEM
Trouble diagnoses
EL-438
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