Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.

NAVIGATION CHECK MODE (VEHICLE SENSORS CHECK)
1. Enter the "Navigation Check" mode (Vehicle Sensors) (see NAVIGATION CHECK MODE (VEHICLE SENSORS) ).
2. While driving, compare the "Speed" indicator to the reading on the speedometer. Check if these readings are almost the same
  OK: The readings are almost the same.
Fig 1: Navigation Check Mode Screen (Vehicle Sensors)
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1. OK: REPLACE RADIO AND NAVIGATION ASSY (SEE RADIO RECEIVER ASSY )
2. NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN DIAGNOSTIC TROUBLE CODE TABLE