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Home >> Lexus >> 2008 >> RX 350 FWD >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Navigation >> Navigation System >> DTC 58-43, 80-43: SPD Signal Error >> Inspection Procedure

Inspection Procedure

HINT:

After the inspection is completed, clear the DTCs.

  1. CHECK VEHICLE SENSOR (NAVIGATION CHECK MODE) 
    1. Enter the "Vehicle Sensors" (Navigation Check Mode) (See NAVIGATION CHECK MODE  ).
      Fig 1: Diagnostic Tool Display - Vehicle Sensors Screen
      G04945319Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. While driving the vehicle, compare the "SPD" indicator to the reading on the speedometer. Check if these readings are almost equal.

      OK: 

      The readings are almost equal. 

    OK: REPLACE NAVIGATION ECU 

    NG: Go to Next Step 

  2. PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

    Refer to "Speed signal does not change in the navigation check mode" in the problem symptoms table (See PROBLEM SYMPTOMS TABLE  ).

    NEXT: END