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 ...

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INSTALLATION CAUTION / NOTICE / HINT CAUTION: Wear protective gloves. Sharp areas on the parts may injure your hands. HINT: Use the same procedure for the RH and LH sides. The procedure listed below is for the LH side. PROCEDURE 1. INS ...