DTC P0500 Vehicle Speed Sensor "A": Description

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

The speed sensor detects the wheel speed and sends the appropriate signals to the skid control ECU. The skid control ECU converts these wheel speed signals into a 4-pulse signal and outputs it to the ECM via the combination meter. The ECM determines the vehicle speed based on the frequency of these pulse signals.

Fig 1: Speed Sensor Pulse Chart

DTC TROUBLE DETECTION CONDITION

DTC No.	DTC Detection Condition	Trouble Area
P0500	The ECM detects following conditions simultaneously for 1 second (1 trip detection logic): No SPD (speed sensor) signal while ECM detects NC (transmission counter gear) signal Park/Neutral position switch is OFF (When shift lever is in other than P and N positions) Transfer lever is in other than N position (4WD)	Open or short in vehicle speed sensor circuit Vehicle speed sensor Combination meter ECM Skid control ECU