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

WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.

DTC DETECTION CONDITION CHART

DTC No.	DTC Detection Condition	Trouble Area
58-43	A difference between the GPS speed and SPD pulse is detected	Speed signal circuit Navigation ECU
80-43	A difference between the GPS speed and SPD pulse is detected	Speed signal circuit Navigation ECU

HINT:

After the inspection is completed, clear the DTCs.

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 if these readings are almost equal.
  OK: The readings are almost equal.
OK: REPLACE NAVIGATION ECU

Fig 1: Identifying Vehicle Sensors Display Screen
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: GO TO NEXT STEP.
CHECK VEHICLE SPEED SIGNAL CIRCUIT BETWEEN NAVIGATION ECU AND COMBINATION METER
Refer to VEHICLE SPEED SIGNAL CIRCUIT BETWEEN NAVIGATION ECU AND COMBINATION METER .

NEXT: END