Park Lock System (Console Shift)

The park lock control system is a safety device that prevents an inadvertent shift out of Park when the ignition switch is in OFF position. The system consists of the following components:

• The automatic transmission park lock solenoid.
• The Transmission Range (TR) switch, also called Park/Neutral Position (PNP) switch.

With the ignition switch in the OFF position, the park lock solenoid is de-energized. This mechanically locks the gearshift lever in the Park position. With the ignition switch in the ON position, battery voltage is supplied to the park lock control solenoid. The PNP switch provides a path to ground in the Park position. This energizes the park lock solenoid and releases the mechanical lock.