Vehicle Stability Control System (w/o VDIM)
DTC C1238/38 Foreign Object is Attached on Tip of Rear Speed Sensor RHDESCRIPTION
DTC Detection Condition:
The speed sensor detects wheel speed and sends the appropriate signals to the skid control ECU. These signals are used for the ABS control system. This speed sensor contains a sensor IC, which consists of 2 MREs (Magnetic Resistance Element). The speed sensor rotor, which consists of 48 sets of N and S poles that are arranged in a circle, is integrated with the inner race of the hub bearing.
To detect the rotation direction, the output waves are used to determine the relationship of the pulses that are generated by 2 MREs. Upon receiving this signal, the sensor IC outputs a forward or backward wave to the ECU.
DTCs C1275/75 to C1278/78 can be deleted when the speed sensor sends a vehicle speed signal or the Test Mode ends. DTCs C1275/75 to C1278/78 are output only in the Test Mode.
HINT:
- DTC C1235/35 is for the front speed sensor RH.
- DTC C1236/36 is for the front speed sensor LH.
- DTC C1238/38 is for the rear speed sensor RH.
- DTC C1239/39 is for the rear speed sensor LH.
Wiring Diagram (Part 1):
Wiring Diagram (Part 2):
Step 1:
Step 2-4:
Step 4(Continued)-7:
Step 7(Continued)-8:
INSPECTION PROCEDURE
NOTE: When replacing the brake actuator assembly, perform zero point calibration. Vehicle Stability Control System (W/O VDIM)
HINT: When C0200/31, C0205/32, C0210/33, or C0215/34 is output together with C1235/35, C1236/36, C1238/ 38, or C1239/39, inspect and repair the trouble areas indicated by C0200/31, C0205/32, C0210/33, or C0215/34 first.