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Home >> Infiniti >> 2014 >> QX80 AWD >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Transmission >> System Description >> System >> A/T Shift Lock System >> A/T SHIFT LOCK SYSTEM: System Description >> Shift Lock Operation At "P" Position
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Shift Lock Operation At "P" Position

When Brake Pedal Is Not Depressed (No Selector Operation Allowed) The shift lock solenoid (A) is turned OFF (not energized) and the solenoid rod (B) is extended with the spring when the brake pedal is not depressed (no selector operation allowed) with the ignition switch ON.

The connecting lock lever (C) is located at the position shown in the figure below when the solenoid rod is extended. It prevents the movement of the detent rod (D). For these reasons, the selector lever cannot be shifted from the "P" position.

Fig 1: Shift Lock Operation At "P" Position When Brake Pedal Is Not Depressed (No Selector Operation Allowed)
G07023001Courtesy of NISSAN NORTH AMERICA, INC.

When Brake Pedal Is Depressed (Shift Operation Allowed)

The shift lock solenoid (A) is turned ON (energized) when the brake pedal is depressed with the ignition switch ON. The solenoid rod (B) is compressed by the electromagnetic force. The connecting lock lever (C) rotates when the solenoid is activated. Therefore, the detent rod (D) can be moved. For these reasons, the selector lever can be shifted to other positions.

Fig 2: Shift Lock Operation At "P" Position When Brake Pedal Is Depressed (Shift Operation Allowed)
G07023002Courtesy of NISSAN NORTH AMERICA, INC.