Description & Operation: Introduction
Shift interlock system prevents gearshift lever from being moved from Park unless the brake pedal is depressed and accelerator pedal is in the idle position. Voltage is provided to shift lock solenoid when ignition is on. In case of a malfunction, gearshift lever can be released by placing ignition key in key release slot near gearshift lever and pushing down.
Shift interlock system consists of brake pedal position switch, key interlock solenoid and switch, park pin switch, gauge assembly, Engine Control Module (ECM) and shift lock solenoid. See Fig 1.