Short Description
The shift lock system is designed to ensure the proper operation of the automatic transmission. The driver must depress the brake pedal in order to move the gear selector from Park to any other range. In addition, the ignition key cannot be turned to the Lock position and removed from the ignition switch unless the gear selector is placed in the Park position.
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Content
There are three systems available in Toyota models; electrical, electrical/ mechanical and mechanical. We will not cover the application by model but rather by system type. For the specifics on a particular model, consult the repair manual.
Electrical Shift Lock Type
The electrical type uses electrical control of the shift lock mechanism, as well as the key lock mechanism.
Shift Lock Mechanism
The shift lock mechanism is made up of a number of components as seen in the illustration below.
The shift position switch (shift lock control switch) is used to detect the position of the shift lever. It has two contacts, P1 and P2. When the select lever is in the Park position, P1 is on (closed) and P2 is off (open). In this position, the key can be removed but the select lever is locked in position. When the select lever is in a position other than Park, P1 is off (open) and P2 is on (closed). In this position, the key cannot be removed.
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