Shift Lock Operation At "P" Position

WARNING: This page is about a different car, the 2009 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.

When Brake Pedal Is Not Depressed (No Shift Operation Allowed) The shift lock solenoid (A) inside the shift lock unit is not energized if the brake pedal is not depressed while the ignition switch is ON. The lock plate (B) lowers according to the downward movement of the position pin (C) when the selector button (D) is pressed, and presses only slider B (E) into the shift lock unit. Slider A (F) located below the lock plate prevents the downward movement of the lock plate with the spring force. The selector lever cannot be shifted from the "P" position for this reason.

However, slider A is forcibly pressed into the shift lock unit, allowing the selector lever to shift if the shift lock release button is pressed.

Fig 1: Identifying Shift Lock Operation At P Position (No Shift Operation Allowed)

Courtesy of NISSAN MOTOR CO., U.S.A.

When Brake Pedal Is Depressed (Shift Operation Allowed)

The shift lock solenoid (A) inside the shift lock unit is energized and the relative positions of sliders A (B) and B (C) are maintained when the brake pedal is depressed while the ignition switch is ON.

The lock plate (D) lowers according to the downward movement of the position pin (E), thrusting away sliders A and B, when the selector button (F) is pressed.

The position pin lowers to the position that allows shift operation for this reason. As a result, the selector lever can be shifted out of the P position.

Fig 2: Identifying Shift Lock Operation At P Position (Shift Operation Allowed)

Courtesy of NISSAN MOTOR CO., U.S.A.