Parking Mechanism
When the shaft is in the "P" range, the parking pawl engages with the parking sprag provided on outer circumference of the annulus gear to fasten the output shaft, to prevent the wheels from rotating. In other words, when the select lever is set to the "P" range, the detent plate and the parking sprag rod move in the direction of arrow, causing the cam on the parking sprag rod to push up the parking pawl to engage with the sprag.
In case the parking pawl collides against a crest of the sprag, only the rod moves because the parking pawl cannot be moved upward, and the cam, while pressing the spring, collides with the parking pawl and the support, and is with held in this condition. If the car is moved even slightly in this condition, the turning of wheels causes the annulus gear to turn as well. Since the cam is pressed in the direction of arrow, the parking pawl is pushed up as a bottom of the sprag aligns with the parking sprag to engage with the sprag.
In this way, the parking mechanism eliminates any chances of the vehicle from being.
| No. | Cause | Symptom | Analysis | Remedy |
|---|---|---|---|---|
| 1 | Locking due to cam broken | Forward and / or reverse drive impossible intermittently | Parking sprag locks the annulus gear due to drifted cam | Replace parking sprag rod |
| 2 | Detent ball separated | Looseness of manual lever | Detent plate not fixed properly | Install detent ball |