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DTC 62 - Miscellaneous Failures

NOTE: If after all testing procedures have been completed system is not functioning properly, substitute ECU with known-good unit and retest.
  1. DTC 62 indicates a problem with wheel speed sensor(s) or a faulty hydraulic unit. A false DTC 62 may be set if parking brake is not fully released, brakes are dragging or vehicle is driven for long periods on snow or ice, left and right tires are different sizes.
  2. Test each wheel speed sensor. See WHEEL SPEED SENSOR TESTING . If all sensor voltages and resistances are within specification, go to next step. If any sensor is malfunctioning, replace sensor. See WHEEL SPEED SENSOR R & I .
  3. 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.
  4. Inspect all wheel speed sensor rotors for damaged and missing teeth. Replace any damaged rotors. Using an oscilloscope, check waveform patterns and output voltage. See Figure. Output voltage should be 0.2 volt (200 mV). If all rotors and wheel speed sensors are okay, go to next step.
  5. If after all testing procedures have been completed system is not functioning properly, substitute known-good Hydraulic Unit (HU) and retest. If DTC 62 does not reset, replace original HU. If DTC 62 resets, replace ECU.
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