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Home >> Toyota >> 2003 >> Highlander Limited, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Cruise Control System - Diagnostics >> DTC 21: Open Vehicle Speed Sensor Circuit >> Circuit Description

Circuit Description

The vehicle speed sensor circuit is sent to cruise control ECU as vehicle speed signal. For each rotation of the shaft, the vehicle speed sensor sends a signal through the combination meter to the cruise control ECU. See Fig 1. The ECU calculates the vehicle speed from this pulse frequency.

Fig 1: Vehicle Speed Sensor Flow Chart
G02828796Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Open Vehicle Speed Sensor Circuit - Diagnostic Table
G02828797Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002