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 |
Test yourself
A quick Toyota 4Runner quiz: every answer comes with an explanation and a link to the manual page.