DTC 33 Right Rear Wheel Speed Sensor Continuity Fault: Notes

Toothed wheel generates a voltage pulse as it moves past sensor. EBTCM/EBCM uses these pulses to determine wheel speed. EBTCM/EBCM uses wheel speed sensor signal to calculate vehicle reference speeds and speed, acceleration and slip values for each wheel. These values are used to determine when anti-lock control is needed.

EBTCM/EBCM will only set one wheel speed sensor DTC at a time, even if multiple faults exist. Detection is prioritized accordingly: LF, RR, LR and RF. Check for additional stored DTCs after making repairs.

DTC 33 will set if there is a short to battery voltage or an open in circuits No. 882 or 883, or a faulty wheel speed sensor. DTC 31 may set if circuits No. 882 or 883 lose continuity and wheel speed sensor signal is lost while driving. DTC 33 should accompany this DTC on next ignition cycle. If DTCs 31 and 33 are set concurrently, diagnose DTC 33 first.

1. Checks for correct resistance in sensor.
2. Checks for a short to battery voltage in either speed sensor circuit wire.
3. Checks for an open circuit in both speed sensor circuit wires.
4. This step manipulates wiring and connections to induce an intermittent fault.
5. Checks if DTC resets on key on.
6. Checks if DTC 31 sets during a road test.
7. DTC 33 sets when vehicle is not moving. If DTC 31 sets during road test, use DTC 31 diagnosis.
8. Wheel speed sensor may be causing an intermittent fault.