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Code 15 - Faulty Wheel Speed Sensor Output

  1. Test each sensor. See WHEEL SPEED SENSOR TEST  under COMPONENT TESTING. If all sensor waveforms, voltages and resistances are within specification, go to next step. If any sensor is malfunctioning, replace sensor. See WHEEL SPEED SENSOR  under REMOVAL & INSTALLATION.
  2. Check each wheel 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.
  3. Inspect all wheel speed sensor rotors for damaged and missing teeth. Replace any damaged rotors. If all rotors are okay, replace ECU, and road test vehicle. Ensure trouble code does not reset.
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