Toyota 4Runner: System Diagram
SYSTEM DIAGRAM
Input and Output Signal of Each ECU
|
Transmitting ECU (Transmitter) |
Receiving ECU (Receiver) |
Signal |
Communication Method |
|---|---|---|---|
|
Power management control ECU |
Steering lock actuator assembly (steering lock ECU) |
Power supply status (to steering lock motor) |
LIN |
|
Steering lock actuator assembly (steering lock ECU) |
|
Sleep available status |
LIN |
|
Steering lock actuator assembly (steering lock ECU) |
|
Lock/unlock sensor status |
LIN |
|
Steering lock actuator assembly (steering lock ECU) |
|
Steering lock status |
LIN |
|
Steering lock actuator assembly (steering lock ECU) |
|
Motor control status |
LIN |
|
Steering lock actuator assembly (steering lock ECU) |
|
Diagnostic response status |
LIN |
|
Steering lock actuator assembly (steering lock ECU) |
|
Lock/unlock sensor malfunction |
LIN |
|
Steering lock actuator assembly (steering lock ECU) |
|
Power supply malfunction (to steering lock motor) |
LIN |
|
Steering lock actuator assembly (steering lock ECU) |
|
Motor driver malfunction |
LIN |
|
Steering lock actuator assembly (steering lock ECU) |
|
Lock bar (stuck) status |
LIN |
|
Steering lock actuator assembly (steering lock ECU) |
|
Push start status |
LIN |
|
Steering lock actuator assembly (steering lock ECU) |
|
Lock/unlock relay drive status |
LIN |
|
Steering lock actuator assembly (steering lock ECU) |
|
Engine start control status |
LIN |
|
Certification ECU |
Steering lock actuator assembly (steering lock ECU) |
Lock/unlock request |
LIN |
|
Main body ECU |
|
Driver side door courtesy switch signal |
CAN |
System Description
SYSTEM DESCRIPTION
1. DESCRIPTION
(a) The steering lock system locks or unlocks the steering by activating the
steering lock bar with a motor. The steering lock ECU activates the motor based
on ...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use the following procedures to troubleshoot the steering lock system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT ...
Other materials about Toyota 4Runner:
Open in One Side of CAN Branch Line
DESCRIPTION
If 2 or more ECUs and/or sensors do not appear on the Techstream "CAN Bus Check"
screen, one side of the CAN branch wire may be open (one side of the CANH [branch
wire]/CANL [branch wire] of the ECU and/or sensor is open).
...
Removal
REMOVAL
PROCEDURE
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-)
battery terminal to disable the SRS system.
NOTICE:
When disconnecting the cable, some systems ne ...
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