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Home >> Infiniti >> 2011 >> M37 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 33 (Driver Assistance System) >> DCA >> System Description >> Component Parts >> Component Description
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Component Description

WARNING: This page is about a different car, the 2011 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
COMPONENT DESCRIPTION

Component Description
ADAS control unit
  • ADAS control unit calculates a target distance between vehicles and a target speed, based on signals received from each sensor and switch to transmit a brake fluid pressure control signal to ABS actuator and electric unit (control unit) via CAN communication
  • ADAS control unit transmits the buzzer output signal to the combination meter via CAN communication
  • ADAS control unit transmits an accelerator pedal feedback force control signal to the accelerator pedal actuator via ITS communication
ICC sensor
  • ICC sensor detects light reflected from a vehicle ahead by irradiating laser forward and calculates a distance from the vehicle ahead and a relative speed, based on the detected signal
  • ICC sensor transmits the presence/absence of vehicle ahead and the distance from the vehicle to ADAS control unit via ITS communication
ECM ECM transmits the accelerator pedal position signal, ICC brake switch signal, stop lamp switch signal, ICC steering switch signal, etc. to ADAS control unit via CAN communication
ABS actuator and electric unit (control unit)
  • ABS actuator and electric unit (control unit) transmits the vehicle speed signal (wheel speed), stop lamp signal and VDC/TCS/ABS system operation condition to ADAS control unit via CAN communication
  • ABS actuator and electric unit (control unit) controls the brake, based on a brake fluid pressure control signal received from ADAS control unit via CAN communication
TCM TCM transmits the signal related to A/T control to ADAS control unit via CAN communication
Combination meter Performs the following operations using the signals received from the ADAS control unit via the CAN communication
  • Displays the DCA system operation status using the meter display signal
  • Illuminates the ICC system warning lamp using the ICC warning lamp signal
  • Operates the buzzer (ICC warning chime) using the buzzer output signal
Dynamic driver assistance switch (On the ICC steering switch) ECM receives an ICC steering switch (dynamic driver assistance switch) signal and transmits the signal to ADAS control unit via CAN communication
ICC brake hold relay ICC brake hold relay activates the stop lamp by ICC brake hold relay drive signal (stop lamp drive signal) outputted by the ADAS control unit
ICC brake switch
  • ICC brake switch is turned OFF and stop lamp switch is turned ON, when depressing the brake pedal
  • ICC brake switch signal is input to ECM. These signals are transmitted from ECM to ADAS control unit via CAN communication
  • Stop lamp switch signal is input to ECM and ABS actuator and electric unit (control unit). These signals are transmitted from ECM and ABS actuator and electric unit (control unit) to ADAS control unit via CAN communication
Stop lamp switch
Transfer control unit Transfer control unit transmits a mode selection state of 4WD shift switch to the ADAS control unit via CAN communication
AV control unit AV control unit transmits the system selection signal to the ADAS control unit via CAN communication
Steering angle sensor Measures the rotation amount, rotation speed, and rotation direction of steering wheel, and then transmits them to ADAS control unit via CAN communication
Accelerator pedal actuator Accelerator pedal actuator receives an accelerator pedal feedback force control signal from the ADAS control unit via ITS communication and pushes back the accelerator pedal