Circuit Description

The speed sensor for skid control ECU 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: Vehicle Speed Sensor Circuit Description

DTC P0500

DTC No.	DTC Detection Condition	Trouble Area
P0500	The ECM Detects Following Conditions Simultaneously For 1 Sec (1 Trip Detection Logic: A/T) (2 Trip Detection Logic: M/T): No SPD (speed Sensor) Signal To ECM Park/Neutral Position Switch Is OFF (Shift Lever Is In Other Than P And N Positions)	Open Or Short In Speed Sensor Circuit Speed Sensor Combination Meter ECM Skid Control ECU