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CHANGED BY EFFECTIVE DATE AFFECTED VIN 6 DIAGNOSIS BRAKE ABS/ESP TROUBLE DIAGNOSIS o: Applied x: N/A Front RH Wheel speed sensor C1021 (5021) C1022 (5022) Wheel speed sensor front right-electrical Wheel speed sensor front right-other Front LH Wheel speed sensor C1011 (5011) C1012 (5012) Wheel speed sensor front left-electrical Wheel speed sensor front left-other 1. C1011 (5011) Cause - Defective front LH wheel speed sensor - Short or poor contact wire to sensor Action - Check the wheel speed sensor connector - Check HECU connector - Check the harness connection 2. C1012 (5012) Cause - Defective front LH wheel speed sensor - No signals from wheel speed sensor and tooth wheel - Too large air gap between wheel speed sensor and tooth wheel - Different number of teeth in tooth wheel Action - Check the wheel speed sensor connector - Check HECU connector - Check air gap and tooth wheel mounting (Specified air gap: 0.335 ~ 0.945 mm) - Check the number of teeth (48) in tooth wheel 1.C1021 (5021) Cause - Defective front RH wheel speed sensor - Short or poor contact wire to sensor Action - Check the wheel speed sensor connector - Check HECU connector - Check the harness connection 2.C1022 (5022) Cause - Defective front RH wheel speed sensor - No signals from wheel speed sensor and tooth wheel - Too large air gap between wheel speed sensor and tooth wheel - Different number of teeth in tooth wheel Action - Check the wheel speed sensor connector and HECU connector - Check air gap and tooth wheel mounting (Specified air gap: 0.335 ~ 0.945 mm) - Check the number of teeth (48) in tooth wheel Sensor Monitoring ABS ESP O O O O Defective Components Descriptions Trouble Code System Function |