Toyota Venza: System Diagram

Toyota Venza Service Manual / Theft Deterrent / Keyless Entry / Engine Immobiliser System(w/ Smart Key System) / System Diagram

SYSTEM DIAGRAM

Communication Table

Transmitting ECU (Transmitter)	Receiving ECU (Receiver)	Signal	Communication Method
Certification ECU (smart key ECU assembly)	Power management control ECU	Engine immobiliser system set/unset signal	CAN
Power management control ECU	Certification ECU (smart key ECU assembly)	Key code recognition signal	CAN
Power management control ECU	Certification ECU (smart key ECU assembly)	Shift position P signal	LIN
		ID code certification result request signal
		Power supply ON operation condition signal
		Engine start operation condition signal
		ACC relay drive condition signal
Steering lock ECU (Steering lock actuator assembly)	Certification ECU (Smart key ECU assembly)	Steering lock signal	LIN
		Steering unlock signal
		Steering lock confirmation signal
		Steering unlock confirmation signal
		Diagnosis response signal
		Steering unlock drive relay signal
		Steering lock drive relay signal
		Steering lock motor operation signal
		L code registration status signal
Certification ECU (Smart key ECU assembly)	Steering lock ECU (Steering lock actuator assembly)	Steering lock release signal	LIN
		Matching request random number signal
		L code registration mode signal
		Diagnosis mode request signal
		DTC clear request signal

Precaution

PRECAUTION 1. PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) battery terminal, initialize the following system after ...

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT HINT: Use the following procedure to troubleshoot the engine immobiliser system. *: Using the Techstream. PROCEDURE 1. VEHICLE B ...

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Disassembly
DISASSEMBLY PROCEDURE 1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See page ). 2. REMOVE REAR DOOR INSIDE HANDLE BEZEL PLUG (a) ...