Code 33: Check Rear Sensor

NOTE: On some models, circuit No. 523 (Red/Pink) is used instead of circuit No. 518 (Light Green/Red).

Turn ignition off. Install breakout box. Measure resistance between pins No. 21 and 22. If resistance is not 800-1400 ohms, go to next step. If resistance is 800-1400 ohms, go to step 7).
Disconnect rear sensor wiring harness connector. Measure resistance between sensor terminals. If resistance is not 800-1400 ohms, replace sensor. If resistance is 800-1400 ohms, go to next step.

Check Circuit No. 518 Continuity

Turn ignition off. Measure resistance between pin No. 22 and wheel sensor wiring harness connector Light Green/Red wire terminal. If resistance is not about zero ohms, repair circuit No. 518 (Light Green/Red). If resistance is about zero ohms, circuit is okay, go to step 4).

Check Circuit No. 519 Continuity

Turn ignition off. Measure resistance between pin No. 21 and wheel sensor wiring harness connector Light Green/Black wire terminal. If resistance is not about zero ohms, repair circuit No. 519 (Light Green/Black). If resistance is about zero ohms, go to next step.

Check Circuit No. 518 Short To Ground

Turn ignition off. Leave rear sensor wiring harness connector disconnected. Measure resistance between pins No. 1 and 22 at breakout box. If continuity is present, repair circuit No. 518 (Light Green/Red) short to ground. If continuity is not present, go to next step.

Check Circuit No. 519 Short To Ground

Turn ignition off. Leave rear sensor wiring harness connector disconnected. Measure resistance between pins No. 1 and 21 at breakout box. If continuity is present, repair circuit No. 519 (Light Green/Black) short to ground. If continuity is not present, go to next step.

Check Sensor Cable For Damage

Inspect sensor cable for damage. Repair or replace as necessary. If cable is okay, problem is intermittent and cannot be located at this time. See INTERMITTENT DIAGNOSIS PROCEDURE .