System Diagram
WARNING: This page is about a different car, the 2007 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Communication table
COMMUNICATION TABLE
| Sender ECU |
Receiver ECU |
Signal |
Line |
| ECM |
Distance Control ECU (Cruise Control ECU) |
- A/T signal
- Cruise control operation signal
- Accelerator pedal idle signal
- Set vehicle distance signal
- Brake demand response signal
- Stored vehicle speed signal
- Current vehicle speed signal
- Cruise control switch signal
- Brake control operation signal
- Dynamic laser cruise designation signal
- Brake control interrupting signal
- Cruise control demand opening angle signal
|
CAN |
| Distance Control ECU (Cruise Control ECU) |
ECM |
- Laser sensor beam axis deviation signal
- Laser sensor malfunction signal
- Dirt present on laser sensor signal
- Bad weather detection signal Communication error signal (from distance control ECU to laser sensor)
- Communication error signal (from ECM to distance control ECU)
- Communication error signal (from skid control ECU to distance control ECU)
- Yaw rate communication error signal
- Steering angle sensor communication error signal
- Distance control ECU voltage signal
- Dynamic laser cruise designation response signal
- Estimated vehicle speed signal
- Vehicle-to-vehicle distance signal
- Vehicle-to-vehicle distance control signal
- Brake control demand signal
- Throttle fully closed demand signal
- Approach warning signal (Skid control buzzer demand signal)
- Cruise target deceleration gradient signal
- Vehicle-to-vehicle distance control acceleration signal
- Down of shift demand signal
|
CAN |
| ECM |
Skid Control ECU |
- Cruise target deceleration gradient signal
- Cruise target deceleration signal
- Throttle fully closed demand signal
- Brake control demand signal
- Cruise control operation signal
|
CAN |
| Skid Control ECU |
Distance Control ECU (Cruise Control ECU) |
- Wheel speed signal
- Speed sensor power drop signal
- Speed sensor condition signal
- Yaw rate sensor signal
- Yaw rate sensor zero point error signal
|
CAN |
| Skid Control ECU |
ECM |
- Brake component malfunction signal
- Brake control malfunction signal
- Drive wheel slip signal
- Cruise control cancel signal
- Skid control buzzer malfunction signal
- Communication logic error signal (from ECM to skid control ECU)
- Brake demand response signal
- Brake control interrupting signal
- Brake control operation signal
|
CAN |
| Steering Angle Sensor |
Distance Control ECU (Cruise Control ECU) |
- +B open circuit malfunction signal
- Sensor malfunction signal
- Steering angle signal
- Sensor zero point signal
|
CAN |
| Yaw Rate Sensor |
Distance Control ECU (Cruise Control ECU) |
- Yaw rate sensor signal
- Yaw rate sensor voltage signal
|
CAN |
| ECM |
Combination Meter (Meter ECU) |
- Cruise control diagnosis signal (DTC)
- Preceding vehicle detection signal
- Approach warning signal
- Vehicle-to-vehicle distance signal
- Dirt present on laser sensor signal
- Bad weather detection signal
- Vehicle-to-vehicle distance control signal
- Vehicle-to-vehicle distance control check mode signal
- Vehicle-to-vehicle distance control standby condition signal
- Constant speed cruise signal CRUISE indicator operation signal
- Cruise control warning signal
- Dynamic laser cruise warning signal
- Cruise control vehicle speed signal
|
- CAN
- BEAN (Instrument Panel Bus)
|
| Distance Control ECU (Cruise Control ECU) |
Combination Meter (Meter ECU) |
- Vehicle-to-vehicle distance signal
- Preceding vehicle detection signal
|
- CAN
- BEAN (Instrument Panel Bus)
|