Toyota 4Runner: System Diagram

Toyota 4Runner Service Manual / Power Source / Network / Networking / Can Communication System / System Diagram

SYSTEM DIAGRAM

w/ Smart Key System

No.	ECU/Sensor Name
1	Combination meter assembly
2	Skid control ECU (master cylinder solenoid)*1
3	Main body ECU (multiplex network body ECU)
4	Airbag sensor assembly
5	Steering angle sensor (spiral cable sub-assembly)
6	DLC3
7	Navigation receiver assembly2 or radio and display receiver assembly3
8	Certification ECU (smart key ECU assembly)
9	Power management control ECU
10	Yaw rate sensor assembly
11	Power steering ECU assembly
12	Four wheel drive control ECU*1
13	Skid control ECU (brake actuator assembly)*4
14	ECM
15	Air conditioning amplifier assembly
16	Front power seat switch LH*5

*1: for 4WD
*2: for Navigation Receiver Type
*3: for Radio and Display Receiver Type
*4: for 2WD
*5: w/ Seat Position Memory

w/o Smart Key System

No.	ECU/Sensor Name
1	Combination meter assembly
2	Skid control ECU (master cylinder solenoid)*1
3	Main body ECU (multiplex network body ECU)
4	Airbag sensor assembly
5	Steering angle sensor (spiral cable sub-assembly)
6	DLC3
7	Navigation receiver assembly2 or radio and display receiver assembly3
10	Yaw rate sensor assembly
11	Power steering ECU assembly
12	Four wheel drive control ECU*1
13	Skid control ECU (brake actuator assembly)*4
14	ECM
15	Air conditioning amplifier assembly
17	Stabilizer control ECU*5
18	Drive monitor switch*6

*1: for 4WD
*2: for Navigation Receiver Type
*3: for Radio and Display Receiver Type
*4: for 2WD
*5: w/ Kinetic Dynamic Suspension System
*6: w/ CRAWL Control

1. w/ Smart Key System:

2. w/o Smart Key System:

System Description

SYSTEM DESCRIPTION 1. BRIEF DESCRIPTION (a) The CAN (Controller Area Network) is a serial data communication system for real-time application. It is a vehicle multiplex communication system which ...

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT IMPORTANT POINTS CONCERNING TROUBLESHOOTING CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS syste ...

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