Circuit Inspection

2004 BRAKES ABS With EBD & BA & TRAC & VSC System - Diagnostics - Sequoia

DTC C0200/31, C0205/32, C0210/33, C0215/34: SPEED SENSOR CIRCUIT CIRCUIT DESCRIPTION

The speed sensor detects wheel speed and sends the appropriate signals to the ECU. These signals are used to control the ABS control system. The front and rear rotors each have 48 serrations.

When the rotors rotate, the magnetic field emitted by the permanent magnet in the speed sensor generates an AC voltage. Since the frequency of this AC voltage changes in direct proportion to the speed of the rotor, the frequency is used by the ECU to detect the speed of each wheel.

2004 BRAKES ABS With EBD & BA & TRAC & VSC System - Diagnostics - Sequoia

Fig. 28: Speed Sensor Signal Representation Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2004 BRAKES ABS With EBD & BA & TRAC & VSC System - Diagnostics - Sequoia

DTC No

DTC Detecting Condition

Trouble Area

CÛ200131 C0205/ 32 C0210/33 CÛ215/ 34

When any of the following is detected:

1. During drilling, speed sensor signals ate not Input for a fixed lime.

2 Momentary interruption in speed 3ensor signals occurs many times during driving.

3. Abnormal signal occurs In pulse signal from speed sensor during driving.

4. Speed sensor signal circuit continues to be open for a fixed time.

• Rig iit front, left front, rigtit rear and left rear speed sensor

• Eacti speed sensor circuit

• Sensor rotor

G&2S21776

G&2S21776

Fig. 29: DTC Detecting Condition Trouble Area Table Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Was this article helpful?

0 0
Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

Get My Free Ebook


Post a comment