2Ad-Fhv Can Communication System (For Lhd) Fail-Safe Chart

Communication System. Lexus Is250, Is220D. Gse20 Ale20
Can Communication. Lexus Is250, Is220D. Gse20 Ale20

  1. FAIL-SAFE FUNCTION

2Ad-Fhv Can Communication System (For Lhd) -- Fail-Safe Chart



FAIL-SAFE FUNCTION

  1. When communication fails in any of the CAN bus lines (communication lines), a fail-safe function(s) will operate. The fail-safe function that is specified for each system operates to prevent those systems from malfunctioning.

  2. Effects on each system when communication is impossible. (For further details, see the pages for each system.)

    Function
    		ECM
    		Skid Control ECU
    		Steering Angle Sensor
    		Yaw Rate Sensor
    		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 (Controls driving force while VDIM is in operation)
    		○
    		●
    		○
    		○
    		VDIM function stops
    		Detectable
    (Light comes on)
    Electric Power Steering (Outputs the assist current)
    		○
    		○
    		○
    		-
    		Control continues with steering assist force based on a vehicle speed of 100 km/h (62.2 mile/h) or equivalent
    		Detectable
    (Light comes on)
    Parking Assist Monitor System (Shows a view behind the rear of the vehicle while reversing)
    		○
    		-
    		○
    		-
    		Parking assist monitor system function stops
    		Detectable (recognized when vehicle direction is not displayed)
    Meter Display (Displays operation condition and DTCs)
    		○
    		○
    		-
    		-
    		Light does not come on or remains on
    		Can be recognized due to abnormal operation of the light

    Function
    		Gateway ECU
    		Power steering 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 (Controls driving force while VDIM is in operation)
    		-
    		-
    		-
    		VDIM function stops
    		Detectable
    (Light comes on)
    Electric Power Steering (Outputs the assist current)
    		-
    		●
    		-
    		Control continues with steering assist force based on a vehicle speed of 100 km/h (62.2 mile/h) or equivalent
    		Detectable
    (Light comes on)
    Parking Assist Monitor System (Shows a view behind the rear of the vehicle while reversing)
    		-
    		-
    		●
    		Parking assist monitor system function stops
    		Detectable (recognized when vehicle direction is not displayed)
    Meter Display (Displays operation condition and DTCs)
    		●
    (Meter)
    		-
    		○
    		Light does not come on or remains on
    		Can be recognized due to abnormal operation of the light

    HINT:
    1. ●: Control master
    2. ○: System related