Toyota Sienna Service Manual: Vehicle Position Mark Deviates Greatly
INSPECTION PROCEDURE
1 CHECK GPS MARK
- Check that the GPS mark is displayed.
OK: GPS mark is displayed
2 CHECK VEHICLE SENSOR (NAVIGATION CHECK MODE)
- Enter the "Navigation Check" mode (Vehicle Sensors).
- While driving the vehicle, compare the "Speed" indicator to the reading on the speedometer. Check that these readings are almost equal.
OK: The readings are almost equal.
3 CHECK VEHICLE SENSOR (NAVIGATION CHECK MODE)
- Check that the display changes between ON and OFF according to the shift lever operation (P and R).
OK
HINT: The display is updated once per second. It is normal for the display to lag behind the actual switch operation.
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Map Disc cannot be Inserted
INSPECTION PROCEDURE
1 CHECK RADIO AND NAVIGATION ASSEMBLY
Check if a disc is inserted into the MAP disc slot.
Check if "DISC IN" is displayed.
OK:
"DISC IN&quo ...
Cursor or Map Rotates when Vehicle Stopped
INSPECTION PROCEDURE
1 CHECK CONDITION
Check with the customer if the vehicle has been turned
by a turntable.
OK:
Vehicle has not been turned by turntable.
HINT:
If the vehicle is t ...
Other materials:
Diagnosis system
1. CHECK DLC3
The ECU uses ISO 15765-4 for communication.
The terminal arrangement of the DLC3 complies
with SAE J1962 and matches the ISO 15765-4
format.
NOTICE:
*: Before measuring the resistance, leave the
vehicle as is for at least 1 minute and do not
operate the ig ...
CD cannot be Ejected
INSPECTION PROCEDURE
1 PRESS "EJECT" AND CHECK OPERATION
Press the CD EJECT switch of the radio receiver for 2
seconds or more and check that the CD is ejected.
OK:
CD is ejected
2 REPLACE CD WITH ANOTHER AND RECHECK
Insert another CD and check if it is ejected.
OK:
CD ...
Poor Sound Quality in All Modes (Low Volume)
INSPECTION PROCEDURE
1 CHECK AUDIO SETTINGS
Set "BASS", "MID" and "TREB" to the initial values and
check that sound is normal.
OK:
Malfunction disappears.
2 COMPARE WITH ANOTHER VEHICLE OF SAME MODEL
Compare with another vehicle of the same model.
...
