Electronically Controlled Brake System

DTC C0215/34 Rear Speed Sensor LH Circuit

DESCRIPTION

DTC Detection Condition:

The speed sensors detect wheel speed and transmit the signals to the ECU. These signals are used for control of the ABS control system. Each of the front and rear rotors has 48 serrations.

When the rotors rotate, the magnetic field generated by the permanent magnet in the speed sensor induces 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.

DTCs C1273/73 and C1274/74 can be deleted when the speed sensor sends a wheel speed signal or the Test Mode ends. DTCs C1273/73 and C1274/74 are output only in the Test Mode.

HINT:
- DTCs C0210/33 and C1273/73 are for the rear speed sensor RH.
- DTCs C0215/34 and C1274/74 are for the rear speed sensor LH.
- The BRAKE warning light comes on when speed sensor malfunctions are detected in two or more wheels.

Wiring Diagram:

Step 1-2:

Step 2(Continued)-4:

Step 5-6:

Step 7:

Step 8:

Step 9-10:

Step 10(Continued)-12:

INSPECTION PROCEDURE

NOTE: When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration. Initialization