System Diagram [09/2014 - 10/2015]
WARNING: This page is about a different car, the 2020 Lexus GS 350, 2019 Lexus GS 350, and 2018 Lexus GS 350. However, it is still accessible from the selected car via links, so may be relevant.
 Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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COMMUNICATION TABLE
| Transmitting ECU |
Receiving ECU |
Signals |
Communication method |
| ECM |
4WD ECU |
- Gear shift signal
- Park/neutral position switch signal (PN signal)
- R range signal (for the meter)
- Gear position fail/gear ratio fail signal
- Gear position signal
- Engine type information signal
- Transmission information signal
- Electronic throttle system sensor malfunction signal
- Accelerator sensor status flag signal
- TC terminal status signal
- Actual output torque signal
- Accelerator pedal depression amount signal
|
CAN Communication System |
| Skid Control ECU |
4WD ECU |
- Wheel speed signal
- Wheel speed sensor malfunction signal
- Wheel speed sensor low voltage status signal
- Wheel speed sensor hardware status signal
- Wheel speed sensor metal interference judgement status signal
- Wheel speed sensor momentary interruption judgement status signal
- Stop light switch signal
- Stop light switch open signal
- VSC brake fluid pressure command signal
- 4WD lock request signal
- 4WD lock release request signal
- Yaw rate follow-up control selection signal
- ABS control in operation signal
- Control tire radius signal
|
CAN Communication System |
| 4WD ECU |
Skid Control ECU |
- 4WD control hydraulic pressure signal
|
CAN Communication System |
| Steering sensor |
4WD ECU |
- Data continuity (valid or invalid) flag signal
- +B open malfunction signal
- Sensor malfunction signal
- Steering angle signal
|
CAN Communication System |
| 4WD ECU |
Combination meter |
- DTC signal
- Diagnostic sender system number signal
- AWD warning illumination and blinking request signal
- Slip indicator light illumination and blinking request signal
|
CAN Communication System |