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ABS Trouble Code Charts For Warning Light Codes

TROUBLE CODE 29 - ABNORMAL ABS SENSOR SIGNAL (ANY ONE OF FOUR) -





8J1: CHECK IF THE WHEELS HAVE TURNED FREELY FOR A LONG TIME.





8J2: CHECK TIRE SPECIFICATIONS.





8J3: CHECK WEAR OF TIRE.





8J4: CHECK TIRE PRESSURE.





8J5: CHECK INSTALLATION OF ABS SENSOR.





8J6: CHECK INSTALLATION OF REAR TONE WHEEL.





8J7: CHECK ABS SENSOR GAP.





8J8: PREPARE OSCILLOSCOPE.





8J9: CHECK ABS SENSOR SIGNAL.





8J10: CHECK CONTAMINATION OF ABS SENSOR OR TONE WHEEL.





8J11: CHECK DAMAGE OF ABS SENSOR OR TONE WHEEL.





8J12: CHECK HUB RUNOUT.





8J13: CHECK ABSCM&H/U.





8J14: CHECK ANY OTHER TROUBLE CODES APPEARANCE.

DIAGNOSIS:
- Faulty ABS sensor signal (noise, irregular signal, etc.)
- Faulty tone wheel
- Wheels turning freely for a long time
TROUBLE SYMPTOM:
- ABS does not operate.





Wiring diagram