Page 2449 of 4323
I28265
± DIAGNOSTICSNAVIGATION SYSTEM
DI±2247
2441 Author: Date:
2005 SEQUOIA (RM1146U)
3 Navigation check mode (GPS information).
PREPARATION:
Enter the ºNavigation Checkº mode (GPS information) (See
page DI±2180).
CHECK:
Check how many of the following codes occur in the ºSTSº col-
umn.
For DENSO Models: T, P
For AISIN AW Models: 04H, 08H
Standard: At least 3 codes occur.
OK Replace radio and navigation assy.
NG
Proceed to next circuit inspection shown in problem symptoms table (See page DI±2184).
Page 2450 of 4323
I28266
I28267
DI±2248
± DIAGNOSTICSNAVIGATION SYSTEM
2442 Author: Date:
2005 SEQUOIA (RM1146U)
Voice guidance does not function
INSPECTION PROCEDURE
1 Check navigation system setting.
PREPARATION:
(a) Enter the ºMENUº screen by pressing the ºMENUº switch.
(b) Enter the volume adjustment screen by pressing the ºVol-
umeº switch.
CHECK:
Check that ºOFFº is not selected.
OK:
OFF is not selected.
NG Turn voice guidance volume up to 4 using voice
adjustment switches.
OK
DIDD2±01
Page 2451 of 4323
I28268
I28269
I28258
± DIAGNOSTICSNAVIGATION SYSTEM
DI±2249
2443 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check navigation setting.
PREPARATION:
(a) Enter the ºMENUº screen by pressing the ºMENUº switch.
(b) Enter the ºSetupº screen by pressing the ºSetupº switch.
CHECK:
Check that ºAuto Voice Guidanceº is not OFF.
OK:
Auto voice guidance is not OFF.
CHECK:
Check that ºVoice Guidance in All Modesº is not OFF.
OK:
Voice guidance in all modes is not OFF.
NG Turn auto voice guidance to ºONº.
OK
3 Check map disc.
CHECK:
Check that the map disc is not deformed or cracked.
OK:
No deformations or cracks appear on the map disc.
NG Replace map disc.
OK
Page 2452 of 4323
DI±2250
± DIAGNOSTICSNAVIGATION SYSTEM
2444 Author: Date:
2005 SEQUOIA (RM1146U)
4 Check radio and navigation assy.
CHECK:
Check if audio sound can be heard from the driver's side speaker.
OK:
Audio sound can be heard.
NG Proceed to next circuit inspection shown in
problem symptoms table (See page DI±2184).
OK
Replace radio and navigation assy.
Page 2453 of 4323
I28258
± DIAGNOSTICSNAVIGATION SYSTEM
DI±2251
2445 Author: Date:
2005 SEQUOIA (RM1146U)
Map display incomplete
INSPECTION PROCEDURE
1 Check map disc.
CHECK:
Check that the map disc is not deformed or cracked.
OK:
No deformations or cracks appear on the map disc.
NG Replace map disc.
OK
2 Check display.
CHECK:
Check that displays other than the navigation display are complete.
OK:
No other incomplete displays are found.
NG Replace radio and navigation assy.
OK
Proceed to next circuit inspection shown in problem symptoms table (See page DI±2184).
DIDD4±01
Page 2454 of 4323
I28258
DI±2252
± DIAGNOSTICSNAVIGATION SYSTEM
2446 Author: Date:
2005 SEQUOIA (RM1146U)
Route cannot be calculated
INSPECTION PROCEDURE
1 Check map disc.
CHECK:
Check that the map disc is not deformed or cracked.
OK:
No deformations or cracks appear on the map disc.
NG Replace map disc.
OK
2 Set destination.
CHECK:
Set another destination and check if the system can calculate the route correctly.
OK:
Route can be correctly calculated.
OK Normal operation.
NG
Proceed to next circuit inspection shown in problem symptoms table (See page DI±2184).
DIDD5±01
Page 2455 of 4323
I28270
± DIAGNOSTICSNAVIGATION SYSTEM
DI±2253
2447 Author: Date:
2005 SEQUOIA (RM1146U)
Gyro error
INSPECTION PROCEDURE
1 Navigation check mode (Vehicle sensors check).
PREPARATION:
Enter the ºNavigation Checkº mode (Vehicle Sensors) (See
page DI±2180).
CHECK:
Check the gyro voltage.
OK:
0.1 to 4.5 V
NG Replace radio and navigation assy.
OK
Proceed to next circuit inspection shown in diagnostic trouble code chart (See page DI±2184).
DIDD6±01
Page 2456 of 4323
I28257
I28258
DI±2254
± DIAGNOSTICSNAVIGATION SYSTEM
2448 Author: Date:
2005 SEQUOIA (RM1146U)
Map disc read error
INSPECTION PROCEDURE
1 Check map disc.
CHECK:
Check for dirt on the map disc surface.
OK:
No dirt is on the map disc surface.
HINT:
If dirt is on the map disc surface, wipe it with a soft cloth from
inside to outside in a radial direction.
NOTICE:
Do not use conventional record cleaner or anti±static pre-
servative.
NG Clean map disc.
OK
2 Check map disc.
CHECK:
Check that the map disc is not deformed or cracked.
OK:
No deformations or cracks appear on the map disc.
NG Replace map disc.
OK
Proceed to next circuit inspection shown in diagnostic trouble code chart (See page DI±2184).
DIDD8±01