SERVICE MANUAL
  Applies to: Hyundai Coupe/Tiburon 1998-2000
GROUP
Brake Systems Anti-lock Brake System
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CIRCUIT INPECTION (SPEED SENSOR CIRCUIT - SHORT GND) 

At each wheel hub there is a tone wheel and an inductive sensor, which supplies the wheel speed information to the ABSCM. The sensor is comprised of a magnet and a pole piece surrounded by a coil. When the tone wheel rotates adjacent to the sensor pole piece, an alternating current signal is generated in the coil with a frequency proportional to wheel speed.

A special integrated circuit in the ABSCM translates the generated AC signal to a square wave.

This square wave is used by the microprocessor to operate the ABS.

DTC
Code
 DISPLAY ON
SCAN TOOL
 Symptom
 Possible cause
66
 LF WHEEL SENSOR - SHORT GND
 Sensor LF circuit short to ground
  • Wheel speed sensor
  • Harness or connector between the wheel speed sensor and ABSCM
  • ABSCM
67
 RF WHEEL SENSOR - SHORT GND
 Sensor RF circuit short to ground
68
 LR WHEEL SENSOR - SHORT GND
 Sensor LR circuit short to ground
69
 RR WHEEL SENSOR - SHORT GND
 Sensor RR circuit short to ground
WIRING DIAGRAM
INSPECTION PROCEDURE
  1. Check Wheel Speed Sensor

  1. Check the harness and the connector between the ABSCM and each wheel speed sensor

SNSR.: SENSOR