DTC 58-43: SPD Signal Error; DTC 80-43: SPD Signal Error: Procedure

CHECK VEHICLE SENSOR (NAVIGATION CHECK MODE)
1. Enter the "Navigation Check" mode (Vehicle Sensors). Refer to NAVIGATION CHECK MODE .
  
  Fig 1: Diagnostic Tool Display - Vehicle Sensors Screen
  Courtesy 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
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. Refer to PROBLEM SYMPTOMS TABLE .

NEXT → END