Inspection Procedure

WARNING: This page is about a different car, the 2007 Lexus GX 470. However, it is still accessible from the selected car via links, so may be relevant.

CHECK VEHICLE SENSOR (NAVIGATION CHECK MODE)
1. Enter the "NAVIGATION CHECK" MODE (Vehicle Sensors).
  
  Fig 1: Identifying Tester Display - Vehicle Sensors
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the gyro voltage.
  Standard voltage: 0.5 to 4.5 V
  
  NG: REPLACE NAVIGATION ECU
  
  OK: PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE