Troubleshooting

DTC P0500 VEHICLE SPEED SENSOR "A"

CIRCUIT DESCRIPTION

DTC Detection Condition:

The vehicle equipped with ABS detects a vehicle speed using the stability control ECU and wheel speed sensor. This sensor monitors a wheel rotation speed and sends the signal to the ECU.

The stability 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.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

The ECM monitors the vehicle speed signal from the combination meter while the vehicle is running. If there is no signal from the combination meter even though the vehicle is driven, the ECM interprets this as a malfunction in the vehicle speed sensor circuit and sets a DTC.

Wiring Diagram:

Step 1 - 2:

INSPECTION PROCEDURE

HINT: Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the engine conditions when a 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.