DTC 15 - Faulty Wheel Speed Sensor Output
NOTE:
If after all testing procedures have been completed system is not functioning properly, substitute ECU with known-good unit and retest.
- This DTC normally is set when other wheel speed sensor DTCs are set. Test each sensor. See WHEEL SPEED SENSOR TESTING . If all sensor voltages and resistances are within specification, go to next step. Replace any malfunctioning sensor. See WHEEL SPEED SENSOR R & I .
- Check each wheel speed sensor-to-rotor gap. See WHEEL SPEED SENSOR under ADJUSTMENTS. If all gaps are within specification, go to next step. If any gaps are not within specification, adjust sensor-to-rotor gap or replace senor.
- Inspect all wheel speed sensor rotors for damaged and missing teeth. Replace any damaged rotors. Using an oscilloscope, check waveform patterns. See Fig 1. If all rotors are okay, replace ECU and road test vehicle. Ensure DTC does not reset.