Vehicle Position Mark Deviates Greatly

WARNING: This page is about a different car, the 2006 Lexus GS 430 and 2006 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.

CHECK GPS MARK
1. Check that the GPS mark is displayed.
  OK : GPS mark is displayed.
NG : GO TO " GPS MARK IS NOT DISPLAYED " IN PROBLEM SYMPTOMS TABLE

Fig 1: Identifying GPS Mark Displayed
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : GO TO NEXT STEP
CHECK VEHICLE SENSOR (NAVIGATION CHECK MODE)
1. Enter the "Navigation Check" mode (Vehicle Sensors) (see NAVIGATION CHECK MODE ).
2. While driving the vehicle, compare the "SPD" indicator to the reading on the speedometer. Check that these readings are almost equal.
  OK : The readings are almost equal.
NG : GO TO "NO SWITCHES FUNCTION WHILE VEHICLE IS RUNNING" IN PROBLEM SYMPTOMS TABLE

Fig 2: Identifying Vehicle Sensors Display Screen
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : GO TO NEXT STEP

CHECK VEHICLE SENSOR (NAVIGATION CHECK MODE)

Check that the display changes to ON or OFF according to the shift lever operation P and R.

SHIFT LEVER POSITION AND DISPLAY CHART

Shift Lever Position	Display
P	OFF
R	ON

Fig 3: Identifying Vehicle Sensors Display Screen

HINT:

The display is updated once per second. It is normal for the display to lag behind the actual switch operation.

NG : GO TO " REVERSE SIGNAL CIRCUIT " IN PROBLEM SYMPTOMS TABLE

OK : PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE