Toyota Venza: System Description

Toyota Venza Service Manual / Door Lock / Wireless Door Lock Control System(w/ Smart Key System) / System Description

SYSTEM DESCRIPTION

1. WIRELESS DOOR LOCK CONTROL SYSTEM

The wireless door lock control system can be used to lock and unlock all doors from a distance. The system is controlled by a door control transmitter which sends radio waves to the door control receiver. The certification ECU (smart key ECU assembly) performs an ID code identification process and engages the door lock control.

2. FUNCTION OF MAIN COMPONENTS

Component	Function
Door control transmitter	Has LOCK, UNLOCK, POWER BACK DOOR* and PANIC switches. Transmits weak radio waves (recognition codes and function codes) to the door control receiver. Illuminates indicator light (LED) during transmission.
Door control receiver	Receives weak radio waves from the door control transmitter and sends them to the certification ECU (smart key ECU assembly).
Front door courtesy switch assembly LH/RH Rear door courtesy switch assembly LH/RH Back door courtesy switch	Turns on when a door is opened and turns off when it is closed. Outputs door status signals (open or closed) to the main body ECU (driver side junction block assembly).
Front door lock assembly RH/LH Rear door lock assembly RH/LH Back door lock assembly	Transmits the door lock position of each door to the main body ECU (driver side junction block assembly).
Certification ECU (Smart key ECU assembly)	Sends wireless door lock control signals in response to the code data from the door control receiver and signals from each ECU.

*: w/ Power Back Door System

3. SYSTEM FUNCTION

The door control transmitter has the LOCK, UNLOCK, POWER BACK DOOR* and PANIC switches. Operating these switches activates each function.

The wireless door lock control system has the following functions:

HINT:

The default settings of the following functions are on. Part of these functions can be customized (See page ).

Function	Operation
All door lock	Pressing the LOCK switch locks all doors.
All door unlock (Unlock 2 operation)	Pressing the UNLOCK switch twice within 3 seconds unlocks all the doors after the driver door is unlocked.
Power back door open/close operation*	Pressing the POWER BACK DOOR switch of the transmitter for longer than about 0.8 seconds opens or closes the back door.
Automatic lock	If none of the doors is opened within 60 seconds after they are unlocked by the wireless door lock control, all doors will lock again automatically.
Answer back	When the doors are locked by wireless operation, the hazard warning lights flash once and wireless door lock buzzer sounds once. When the doors are unlocked by wireless operation, the hazard warning lights flash twice and wireless door lock buzzer sounds twice.
Panic alarm	Pressing the PANIC switch of the transmitter for longer than about 0.8 seconds causes the following alarms to activate: Sounds the horn. Flashes the headlights, taillights and hazard warning lights. Illuminates the interior lights (when the switch is in the DOOR position). While the panic alarm is operating, pressing any switch of the transmitter cancels the alarm operation.
Door ajar warning	The buzzer sounds when the LOCK switch is pressed when any of the doors are ajar, and it sounds for 10 seconds continuously. The buzzer stops when all doors are closed or the UNLOCK switch is pressed.
Illuminated entry	When all doors are locked, pressing the UNLOCK switch causes the interior lights to come on simultaneously with the unlock operation.

*: w/ Power Back Door System

Parts Location

PARTS LOCATION ILLUSTRATION ILLUSTRATION ...

System Diagram

SYSTEM DIAGRAM Communication Table Transmitting ECU (Transmitter) Receiving ECU (Receiver) Signal Line Certification ECU (Smart key ...

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