Toyota 4Runner: 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 assembly*2 or radio and display receiver assembly*3 |
|
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
|
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 assembly*2 or radio and display receiver assembly*3 |
|
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 ...
Other materials about Toyota 4Runner:
Power Steering Warning Light Circuit
DESCRIPTION
The power steering ECU assembly is connected to the combination meter assembly
via CAN communication. If the power steering ECU assembly detects a malfunction,
the power steering warning light comes on. At this time, the vehicle enters fail-sa ...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT BRAKE BOOSTER ASSEMBLY
(a) Airtightness check
(1) Start the engine and stop it after 1 or 2 minutes. Slowly depress
the brake pedal several times.
If the pedal can be depressed to the floor the f ...
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