Toyota Venza: System Description

Toyota Venza Service Manual / Door / Hatch / Back Door Closer System / System Description

SYSTEM DESCRIPTION

1. BACK DOOR CLOSER SYSTEM DESCRIPTION

(a) Operating any power back door switch when the back door is fully closed inputs a request signal to the power back door ECU*1 or back door closer ECU*2. The power back door ECU*1 or back door closer ECU*2 outputs a "latch release" command to the back door lock in response to the input.

(b) The latch can be released only when the back door is unlocked.

(c) 3 switches are built into the back door lock, and the power back door ECU*1 or back door closer ECU*2 monitors each switch status. The power back door ECU*1 or back door closer ECU*2 controls latch "release/ close" operations in response to the inputs from each switch.

Switch	Function
Back door courtesy switch	Detects whether back door is open or closed. This switch turns on when back door is open or ajar and turns off when it is fully closed.
Latch switch	Detects fully closed position of latch. This switch turns on when latch is in over-latch position.
Sector switch	Detects ajar position of latch. This switch turns on when latch is in open-latch position.

*1: w/ Power Back Door System
*2: w/o Power Back Door System

System Diagram

SYSTEM DIAGRAM Communication Method Transmitting ECU Receiver Signal Communication Method Main body ECU (Driver Side Junction Block Asse ...

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT HINT: The back door closer system troubleshooting procedure is based on the premise that the power back door system is operating normally. Check the power bac ...

Other materials about Toyota Venza:

Back Door Closer Switch Malfunction (B2251)
DESCRIPTION The power back door ECU (power back door motor unit)*1 or back door closer ECU (multiplex network door ECU)*2 receives signals from the latch switch, sector switch and back door courtesy switch, which are built into the back door lock. Based o ...

Lost Communication with ECM (U0100-U0142,U0155)
DESCRIPTION DTC No. DTC Detecting Condition Trouble Area U0100 No communication with ECM CAN communication system ECM U0131 No commu ...

Fuel Pump Control Circuit
DESCRIPTION 1. w/o Smart Key System When the engine is cranked, the starter relay drive signal output from the ignition switch is input into the STA terminal of the ECM, and the NE signal generated by the crankshaft position sensor is also input into the ...