Communication System. Lexus Gs430, Gs300. Uzs190 Grs190
Can Communication. Lexus Gs430, Gs300. Uzs190 Grs190
Can Communication System -- Fail-Safe Chart |
| FAIL-SAFE FUNCTION |
When communication fails in any of the CAN bus lines (communication lines) due to a short circuit or other causes, the fail-safe function, which is specified for each system, operates to prevent the system from malfunctioning.
Effects on each system when communication is impossible. (For further details, see the pages for each system.)
Function ECM Skid Control ECU Steering Control ECU Yaw Rate Sensor Distance Control ECU Television Camera ECU Condition when communication is impossible DTC detection (Driver detectable) VSC Control (controls driving force while VSC is in operation) ○ ● ○ ○ - - VSC function stops Detectable (Light comes on) VDIM control (steering cooperative control) - ● ○ ○ - - VDIM function stops Can be recognized with abnormal lighting of the light Dynamic Radar Cruise (Maintains vehicle-to- vehicle distance) ○ ○ - - ● - Vehicle-to- Vehicle distance control does not operate Detectable (Light comes on) Pre-collision safety system * AVS control (increases the damping force of the air suspensions when the PCS is activated) - - - - ○ - Control is inoperative None Parking assist monitor system (exterior view from rear of vehicle while reversing) - - ○ - - ● Parking assist monitor system (function stops) Detectable (recognized when vehicle direction is not displayed) Pre-collision safety system (requests braking and seat belt tightening when a vehicle crash is detected) - ○ - - ○ - Pre-collision safety system is inoperative Detectable (Light comes on) Absorber Control (Controls suspension properly based on vehicle conditions) ○ ○ - - - - Control stops Detectable (absorber control is not displayed) Power steering (outputs the assist current) ○ ○ ○ - - - Control continues with assist force for a vehicle speed of 43.5mile/h(100 km/h) or equivalent Detectable (Light comes on) Meter Display (displays operation condition and DTCs) ○ ○ - - ○ - Light does not come on or remains on Can be recognized with abnormal lighting of the light Obstacle position detection (determines the level of contact avoidance based on steering wheel operation) - - ○ - - - Informs the driver of an obstacle in the detection ranges The steering wheel assist mark on the clearance sonar indication blinks Parking assist monitor system detection (there is no ultrasonic sensor if the vehicle is equipped with the rear view monitor ) - - - - - ○ Recognizes the presence of the ultrasonic sensor by mistake and informs the driver The ultrasonic sensor mark on the parking assist-sensor indicator blinks VGRS control (controls the ratio of the steering gear based on the vehicle speed) ○ - ○ - - - VGRS function stops Can be recognized with abnormal lighting of the light Function Seat belt control ECU Absorber control ECU Network gateway ECU Power steering ECU Clearance warning ECU Steering control ECU Condition when communication is impossible DTC detection (Driver detectable) VSC Control (Controls driving force while VSC is in operation) - - - - - - VSC function stops Detectable (Light comes on) VDIM control (steering cooperative control) - - - ○ - ○ VDIM function stops Can be recognized with abnormal lighting of the light Dynamic radar Cruise (maintains vehicle-to- vehicle distance) - - - - - - Vehicle-to- vehicle distance control does not operate Detectable (Light comes on) Pre-collision safety system * AVS control (increases the damping force of the air suspensions when the PCS is activated) - ● - - - - Control is inoperative None Parking assist monitor system (displays exterior view from rear of vehicle while reversing) - - - - - - Parking assist monitor system only (function stops) Detectable (recognized when vehicle direction is not displayed Pre-collision safety system (requests braking and seat belt tightening when a vehicle crash is detected) ● - - - - - Pre-collision safety system is inoperative Detectable (Light comes on) Absorber Control (controls suspension properly based on vehicle conditions) - ● - - - - Control stops Detectable (absorber control is not displayed) power steering (outputs the assist current) - - - ● - - Control continues with assist force for a vehicle speed of 43.5 mile/h(100 km/h)or equivalent Detectable (Light comes on) Meter Display (displays operation condition and DTCs) ○ ○ ● ○ - ○ Light does not come on or remains on Can be recognized with abnormal lighting of the light Obstacle position detection (determines the level of contact avoidance based on steering wheel operation) - - - - ● ○ Informs the driver of an obstacle in the detection ranges The steering wheel assist mark on the clearance sonar indication blinkes Parking assist monitor system or detection (there is no back sonar if the vehicle is equipped with the back monitor) - - - - ● - Recognizes the presence of the ultrasonic sensor by mistake and informs the driver The ultrasonic sensor mark on the parking assist-sensor indicator blinks VGRS control (controls the ratio of the steering gear based on the vehicle speed) - - - ○ - ● VGRS function stops Can be recognized with abnormal lighting of the light - HINT:
- ●: Control master
- ○: System related