FixVault

DTC P0500 Vehicle Speed Sensor "A": Description

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: Identifying Wheel Speed Sensor Pulses
G04973163Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
DTC TROUBLE DETECTION CONDITION

DTC No. DTC Detection Conditions Trouble Areas
P0500  While vehicle being driven, no vehicle speed sensor signal transmitted to ECM (1 trip detection logic)
  • Open or short in speed signal circuit
  • Vehicle speed sensor
  • Combination meter
  • ECM
  • Skid control ECU