Toyota 4Runner: System Diagram

Toyota 4Runner Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Smart Key System(for Start Function) / System Diagram

SYSTEM DIAGRAM

Communication Table

Transmitting ECU (Transmitter)	Receiving ECU (Receiver)	Signal	Line
ECM	Power management control ECU	Crankshaft position sensor signal	CAN/Serial communication
Combination meter	Power management control ECU	Vehicle speed signal	CAN/Serial communication
Steering lock ECU	Power management control ECU	Steering lock/unlock signal	LIN/Serial communication
Certification ECU	Power management control ECU	LIN master signal	LIN
Power management control ECU	Certification ECU	ID required signal	LIN
Power management control ECU	Certification ECU	Key existence condition signal	CAN

System Description

SYSTEM DESCRIPTION 1. PUSH-BUTTON START DESCRIPTION (a) The push-button start function uses a push-type engine switch, which the driver can operate by merely carrying the key. This system consists ...

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT HINT: Use these procedures to troubleshoot the push-button start function. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT T ...

Other materials about Toyota 4Runner:

Data List / Active Test
DATA LIST / ACTIVE TEST 1. DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful bec ...

Power Seat Position is not Memorized
DESCRIPTION When the seat memory SET switch and a memory switch (M1 or M2) are pressed simultaneously, the main body ECU commands the position control ECU through CAN communication to record the value of each position sensor. WIRING DIAGRAM CAUTION / ...