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Automatic Transmission Shift Interlock Systems: Overview Toyota Avalon XX20

Automatic Trans 10 illustrations ~191 words

DESCRIPTION & OPERATION

Transmission/transaxle is equipped with an electronically controlled shift lock and key lock system. (Scheme 142)and (Scheme 143). Shift lock system prevents shift lever from being moved from Park unless brake pedal is depressed. In case of a malfunction, shift lever can be released by depressing shift lock override button, located near shift lever under small plastic cover. Key lock system prevents ignition key from being moved from ACC to LOCK position on ignition switch unless shift lever is in Park.

System consists of brakelight switch, key interlock solenoid, shift lock control switch, shift lock control Electronic Control Unit (ECU), shift lock solenoid and shift lock release button. All models may not be equipped with all components.

Note. Sienna and Tundra models are equipped with cable operated shift lock system. See CABLE OPERATED SHIFT LOCK SYSTEM CHECK and ADJUSTMENTS .

Scheme 142

Scheme 142: DESCRIPTION & OPERATION

Scheme 143

Scheme 143

CONNECTOR IDENTIFICATION

Note. For connector and terminal identification, refer to appropriate illustration. (Scheme 144)- (Scheme 151). The following connector views are model specific.

Scheme 144

Scheme 144: CONNECTOR IDENTIFICATION

Scheme 145

Scheme 145

Scheme 146

Scheme 146

Scheme 147

Scheme 147

Scheme 148

Scheme 148

Scheme 149

Scheme 149

Scheme 150

Scheme 150

Scheme 151

Scheme 151