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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 181 (Anti-Lock Brake System) >> Diagnostic Tests >> DTC C0200/ 31, DTC C0205/ 32, DTC C0210/ 33 & DTC C0215/ 34: Speed Sensor Circuit >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2003 Toyota Tundra, 2002 Toyota Tundra, and 2001 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

Speed sensor detects wheel speed and sends appropriate signals to ABS ECU. These signals are used to control ABS system. Front and rear sensor rotors each have 48 teeth. When rotor rotates, magnetic field emitted by permanent magnet in speed sensor generates an AC voltage. Since frequency of this AC voltage changes in direct proportion to speed of rotor, frequency is used by ABS ECU to detect speed of each wheel. If malfunction occurs in speed sensor circuit, ABS ECU cuts off current to ABS solenoid valve relay and prohibits ABS control.

  1. DTC C0200/ 31 -  Right Front Speed Sensor
  2. DTC C0205/ 32 -  Left Front Speed Sensor
  3. DTC C0210/ 33 -  Right Rear Speed Sensor
  4. DTC C0215/ 34 -  Left Rear Speed Sensor
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