Engine Control System

NOTE: This article contains updated data processed from TSB# PG001-05.

P0500 - Vehicle Speed Sensor Malfunction

CIRCUIT DESCRIPTION

DTC Detecting Condition:

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.

Wiring Diagram:

Step 1 - 3:

Step 3(Continued) - 4:

INSPECTION PROCEDURE

HINT: Read freeze frame data using hand-held tester or OBDII scan tool. Because freeze frame records the engine conditions when the malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean or rich, etc. at the time of the malfunction.