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DTC P0500 Vehicle Speed Sensor "A": Description

The speed sensors detect the wheel speed and send 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
G05184080Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
DTC DETECTION CONDITION CHART

DTC No. DTC Detection Condition Trouble Area
P0500 While vehicle being driven, no vehicle speed sensor signal transmitted to ECM
(2 trip detection logic: manual transaxle models)
(1 trip detection logic: automatic transaxle models)
  • Open or short in speed signal circuit
  • Speed meter circuit (wheel speed sensor, skid control ECU)
  • Combination meter
  • ECM