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Home >> Toyota >> 2023 >> 4Runner TRD Pro >> Repair and Diagnosis >> Accessories & Equipment >> Anti-Theft Systems >> Smart Key System (For Start Function) - Diagnostics - Introduction >> SMART KEY SYSTEM (for Start Function) >> System Diagram [08/2015 - 08/2019] >> System Diagram [08/2015 - 08/2019]
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System Diagram [08/2015 - 08/2019]

Fig 1: Identifying Smart Key System Diagram
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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
Key existence condition signal CAN
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