DYNAMIC RADAR CRUISE CONTROL SYSTEM


  1. FUNCTION OF MAIN COMPONENTS


    1. The main components in the dynamic radar cruise control system have the following functions:

      Component Function
      Cruise Control Main Switch ON-OFF Button

      • Turns the cruise control system on and off.

      • Vehicle to vehicle distance control mode becomes be activated immediately after the main switch is turned on. The mode shifts to constant speed control mode by pressing and holding the button more than 1.5 sec from the cruise control system off.
      CANCEL Switch A cancel signal is output to the ECM when this switch is operated.
      +RES Switch The acceleration function and resuming of a preset speed can be performed by operating this switch. A signal is output to the ECM when this switch is operated.
      -SET Switch The deceleration function and vehicle speed setting resume signals are output to the ECM when this switch is operated.
      Steering Pad Switch Assembly Vehicle-to-vehicle Distance Control Switch While the system is in vehicle-to-vehicle distance control mode, the driver can operate the vehicle-to-vehicle distance control switch to select the vehicle-to-vehicle distance in three levels: long, middle and short.
      ECM

      • Controls the dynamic radar cruise control system in accordance with signals from switches, sensors, and the millimeter wave radar sensor assembly.

      • If the ECM detects a malfunction in the dynamic radar cruise control system, it will store DTCs (Diagnostic Trouble Codes).
      Stop Light Switch Assembly Detects brake pedal depression and transmits its signal to the ECM.
      Clutch Pedal Stroke Sensor Assembly*1 Detects the depressing of the clutch pedal and transmits a signal to the ECM.
      Neutral Position Switch*1 Detects the manual transaxle neutral position and transmits a signal to ECM.
      Millimeter Wave Radar Sensor Assembly

      • Radiates millimeter radar waves forward, uses the reflected waves to detect the presence of a vehicle traveling ahead, the vehicle-to-vehicle distance, and the relative speed.

      • While the system is in vehicle-to-vehicle distance control mode, the millimeter wave radar sensor assembly detects the vehicle ahead based on signals from the built-in millimeter wave radar sensor and forward recognition camera (camera sensor). Then, the millimeter wave radar sensor assembly calculates the acceleration or deceleration rate required in order to attain the target vehicle-to-vehicle distance, and outputs a request signal to the ECM.

      • If the ECM detects a malfunction in the dynamic radar cruise control system, it will store DTCs (Diagnostic Trouble Codes).
      Forward Recognition Camera (Camera Sensor) Detects lane markers and objects on the road ahead using the image captured by the monocular camera and sends the information to the millimeter wave radar sensor assembly.
      Camera Heater (Forward Recognition Hood) Heats the sheet heater in accordance with the signals from the forward recognition camera (camera sensor).
      Combination Meter Assembly Cruise Control Indicator Light (Constant Speed Control Mode) Illuminates when constant speed control mode is entered.
      Cruise Control Indicator Light (Vehicle-to-vehicle Distance Control Mode) Illuminates when the cruise control main switch ON-OFF button is pressed to start the cruise control system.
      Cruise SET Indicator Light Illuminates when the vehicle speed is set.
      Buzzer If the ECM detects automatic cancel or warning signals while the vehicle is operating under cruise control, this buzzer sounds to inform the driver.
      Multi-information Display During dynamic radar cruise control operation, the multi-information display receives signals from the ECM in order to display the system conditions.
      Master Warning Light Comes on when there is a malfunction in the system.
      Spiral Cable with Sensor Sub-assembly Steering Sensor Detects the angle and direction of steering and transmits signals to the skid control ECU assembly and millimeter wave radar sensor assembly.
      Airbag Sensor Assembly Yawrate Sensor Detects the yaw rate of the vehicle and transmits signals to the millimeter wave radar sensor assembly.
      Brake Actuator Assembly Skid Control ECU

      • While the system is operating in vehicle-to-vehicle distance control mode, the skid control ECU assembly operates the brake actuator in accordance with the brake request signal received from the ECM.

      • Applies the brakes in accordance with signals from the skid control ECU.

      • During stop retention control, when this ECU detects that the vehicle is parked through a driver side courtesy light switch signal or driver side seat belt buckle switch signal, or an electric parking brake switch assembly signal is input, the ECU operates the parking brake, then the system control is canceled.*2
      Throttle Body with Motor Assembly Throttle Control Motor Adjusts the throttle valve opening angle in accordance with signals from the ECM.
      Throttle Position Sensor Detects the throttle valve opening angle and outputs it to the ECM.
      Pre-collision City Buzzer Sounds a buzzer when it receives a signal from the forward recognition camera (camera sensor) to alert the driver that the distance between vehicles is short.
      Accelerator Pedal Sensor Assembly Detects the accelerator pedal depression degree and outputs it to the ECM.
      Electric Parking Brake Switch Assembly Electric Parking Brake Switch Outputs a parking brake application signal to the parking brake ECU (skid control ECU).
      VSC OFF (TRC OFF) Switch Detects the VSC OFF (TRC OFF) signals and outputs it to the skid control ECU.
      Parking Brake Actuator Assembly*2 Operates the parking brake actuator according to signals from the parking brake ECU (skid control ECU).
      Speed Sensor Detects the wheel speed and transmits signals to the skid control ECU.
      Park/Neutral Position Switch Assembly*3 Detects the shift lever position and transmits signals to the ECM.
      Shift Lock Control Unit Assembly*3 Transmission Control Switch

      • Detects the shift lever position and transmits signals to the ECM.

      • Informs the ECM of driver upshift or downshift operations while the shift lever is in M.
      Engine Stop and Start ECU*4 Sends either an engine stop or restart signal to the ECM according to the signals from each sensor and switch.
      Network Gateway ECU Relays and transmits each CAN communication data signal.

      *1: Models with manual transaxle

      *2: Models with full-speed range following function

      *3: Models with CVT

      *4: Models with stop and start system

  2. SYSTEM CONTROL


    1. The millimeter wave radar sensor assembly, forward recognition camera (camera sensor) and ECM control this system.

    2. The combination meter assembly informs the driver of the control conditions.

    3. Constant speed control mode is controlled by the ECM, which outputs signals to the throttle control motor.

      A001MT9E01
      *1 Various Sensors and Switches
      *2 Throttle Body with Motor Assembly
      *3 Throttle Control Motor

    4. Vehicle-to-vehicle distance control mode is controlled by the millimeter wave radar sensor assembly and forward recognition camera (camera sensor). Thus, the signals are output to the actuators and the ECU while exchanging data as indicated below.

      A001MRCE01
      *1 Millimeter Wave Radar Sensor Assembly
      *2 Forward Recognition Camera (Camera Sensor)
      *3 CAN Communication Line

  3. FUNCTION


    1. Control of Dynamic Radar Cruise Control System Varies Depending on Mode


      • A: Constant speed control mode

      • B: Vehicle-to-vehicle distance control mode

      • C: Vehicle-to-vehicle distance control mode (models with full-speed range following function)

      Function Outline Mode
      A B C
      Constant Speed Control The ECM compares the actual vehicle speed and the set speed and if the vehicle speed is lower than the set speed, it uses the throttle motor to increase the throttle valve opening angle. ○ ○ ○
      Deceleration Control Performs throttle control and brake control in order to decelerate the vehicle so that the vehicle-to-vehicle distance between the driver's own vehicle and the vehicle ahead equals the set distance. - ○ ○
      Follow-up Control After performing deceleration control, the driver's own vehicle follows the vehicle ahead in order to maintain the proper vehicle-to-vehicle distance in accordance with the vehicle speed. - ○ ○
      Acceleration Control Accelerates the vehicle in order to attain the set vehicle speed if the vehicle ahead or this vehicle has changed lanes. - ○ ○
      Stop Control Detects if the vehicle ahead has stopped, performs motive force control and stops the vehicle while maintaining proper vehicle-to-vehicle distance. - - ○
      Stop Retention Control Judges if the vehicle is stopped, performs brake control and keeps the vehicle stopped through the brake hold function. - - ○
      Start Control Detects that the vehicle ahead starts moving again, displays the message on the multi-information display to urge the driver to perform the start-off operation (to operate the cruise control main switch or depress the accelerator pedal), and resumes follow-up control after the vehicle is started. - - ○
      Set Control

      When the following conditions are met, and the cruise control main switch is pressed to the -/SET side and released, the ECM stores the vehicle speed and maintains the vehicle constantly at the current speed.


      • The ON-OFF button on the cruise control main switch assembly is pressed.

      		 ○ ○ ○
      The vehicle is traveling at a speed within the range of approximately 50 km/h to 200 km/h (30 mph to 125 mph). ○ - -
      The vehicle is traveling at a speed within the range of approximately 50 km/h to 180 km/h (30 mph to 110 mph). - ○ ○
      Low Speed Limit Control The low speed limit is the lowest speed that cruise control can be set at and it is designed to be approximately 40 km/h (25 mph). The cruise control system cannot be set below that speed. If the vehicle speed drops below that speed while driving using cruise control, speed control by the cruise control system will be canceled automatically. The set vehicle speed is kept in memory. ○ ○ -
      COAST (-) Switch Control While the cruise control main switch is held to the SET/- side, the vehicle speed and the set vehicle speed change as follows, according to the mode: ○ ○ ○

      • The vehicle decelerates constantly.

      • The set vehicle speed changes to the speed at which the switch is released.

      		 ○ - -

      • The set vehicle speed decreases in increments of 5 km/h or 5 mph. [Example: 103 → 100 → 95 → 90 → 85 km/h (mph)]

      • The vehicle decelerates rapidly due to ETCS-i. The vehicle will remain at the speed that the vehicle is traveling at when the COAST switch is released.

      		 - ○ ○
      Tap-down Control When the cruise control main switch is moved momentarily (approximately 0.6 seconds or less) to the -SET side, the vehicle speed and the set vehicle speed change as follows, according to the mode: ○ ○ ○

      • The vehicle will decelerate in increments of approximately 1 km/h (1 mph) each time the switch is moved.

      • However, if the difference between the actual vehicle speed and the set vehicle speed is greater than 5 km/h or 3 mph, the set vehicle speed will change to the speed at which the vehicle was being driven at the time the switch was operated.

      		 ○ - -

      • The vehicle will decelerate in increments of approximately 1 km/h or 1 mph for each time the switch is moved.*1

      • The vehicle will decelerate in increments of approximately 5 km/h or 5 mph for each time the switch is moved.*2

      		 - ○ ○
      ACC (+) Switch Control When the cruise control main switch is held to the RES/+ side, the vehicle speed and the set vehicle speed change as follows, according to the mode: ○ ○ ○

      • The vehicle accelerates constantly.

      • The set vehicle speed changes to the speed at which the switch is released.

      		 ○ - -

      • The set vehicle speed increases in increments of 5 km/h or 5 mph. [Example: 83 → 85 → 90 → 95 → 100 km/h (mph)]

      • The vehicle will accelerate to the speed that is set at the time the switch is released. However, only the set vehicle speed will change during follow-up control.

      		 - ○ ○
      Tap-up Control When the cruise control main switch is moved momentarily (approximately 0.6 seconds or less) to the +RES side, the vehicle speed and the set vehicle speed change as follows: ○ ○ ○

      • The vehicle will accelerate in increments of approximately 1 km/h (1 mph) for each time the switch was moved.

      • However, if the difference between the actual vehicle speed and the set vehicle speed is greater than 5 km/h (3 mph), the set vehicle speed will not change.

      		 ○ - -

      • The vehicle will accelerate in increments of approximately 1 km/h or 1 mph for each time the switch is moved.*1

      • The vehicle will accelerate in increments of approximately 5 km/h or 5 mph for each time the switch is moved.*2

      		 - ○ ○
      RES Switch Control If the vehicle speed is above the low speed limit, the cruise control resumes operation (subsequently pushes the cruise control main switch assembly to the +RES side) to reach the vehicle speed that was set at the time the driver canceled cruise control. ○ ○ ○
      Even if the vehicle speed drops below the low speed limit, resumption can be performed when the vehicle speed increases to above the low speed limit. However, resumption can be performed even if the vehicle speed is below the low speed limit when the vehicle is running in mode B and there is a vehicle ahead. - - ○
      If the vehicle ahead changes driving lanes during follow-up control, the vehicle speed is gradually increased to the set vehicle speed. At this time, the vehicle speed can be increased promptly by pushing the cruise control main switch to the +RES side. - ○ ○
      After the vehicle ahead has started running again under stop retention control and then the message that urges the driver to perform the start-off operation has been displayed, when the cruise control main switch is pushed to the +RES side, follow-up control is resumed and the vehicle can be accelerated up to the set speed. - - ○
      Manual Cancel Control

      If any of the following signals are sent to the ECM, the cruise control is canceled accordingly:


      • Stop light switch assembly is turned on other than under stop retention control (brake pedal is depressed).

      • Shift lever is moved from D to any other position.*3

      • Move the shift lever to 1st gear or reverse gear.

      • Neutral position switch is detecting neutral for more than a specified time.

      • Cruise Control Main Switch(ON-OFF button) off signal.

      • CANCEL switch on signal (cruise control main switch is moved to CANCEL side).

      • During shift operation, the clutch pedal is depressed for more than the specified amount of time. (only during vehicle-to-vehicle distance control mode)*4

      • Depress the clutch pedal. (Constant speed control mode)*4

      • Electric parking brake is applied (only during vehicle-to-vehicle distance control mode).

      		 ○ ○ ○
      Automatic Cancel Control When an automatic cancel signal is sent to the ECM, cruise control operation is canceled. At this time, the type of warning sent to the driver and the control resumption condition varies according to the cancel signal. ○ ○ ○
      Mode Switching Control

      The following operations switch modes:


      • Vehicle to vehicle distance control mode becomes be activated immediately after the main switch is turned on. The mode shifts to constant speed control mode by pressing and holding the button more than 1.5 sec from the cruise control system off.

      		 ○ ○ ○
      Other Control Cancellation Conditions

      If any of the following conditions occur during cruise control driving, the speed control by the cruise control system is canceled.

      However, the set speed remains in the memory:


      • VSC operates during cruise control driving.

      • TRC operates for a certain period of time during cruise control driving.

      • TRC is off or VSC is off.

      • DSC operates during cruise control driving.

      		 ○ ○ ○

      ○: Available

      -: Not available

      *1: Except models for Europe

      *2: Models for Europe

      *3: Models with CVT

      *4: Models with manual transaxle

    2. Constant Speed Control Mode


      1. The ECM compares the set vehicle speed and the actual vehicle speed, and performs constant speed control by regulating the throttle in order to attain the set vehicle speed. The ECM compares the set vehicle speed and the actual vehicle speed, and performs constant speed control by regulating the throttle in order to attain the set vehicle speed. The millimeter wave radar sensor assembly uses the millimeter wave radar sensor signal and information from the forward recognition camera (camera sensor) to determine the condition in front of the vehicle and sends acceleration/deceleration requests to the ECM.

        A001N5CE01

    3. Vehicle-to-vehicle Distance Control Mode


      • In vehicle-to-vehicle distance control mode, the ECM performs deceleration control function, follow-up control function, acceleration control function, stop control function*, stop retention control function* or start control function* based on the information about the vehicle ahead transmitted from the millimeter wave radar sensor assembly and forward recognition camera (camera sensor).


        • *: Models with full-speed range following function


      1. Deceleration Control Function


        • The millimeter wave radar sensor assembly calculates the target deceleration rate in accordance with signals from the millimeter wave radar sensor, forward recognition camera (camera sensor) and transmits a deceleration request signal to the ECM. Upon receiving this signal, the ECM closes the throttle valve in order to cause the vehicle to decelerate.

        • This control is not performed in the presence of a parked vehicle or object or below the settable vehicle speed range.

          A001N7EE01

        • If the millimeter wave radar sensor assembly determines that further deceleration is necessary, it transmits a brake request signal to the ECM. Upon receiving this signal, the ECM transmits a brake request signal to the skid control ECU. The skid control ECU then controls the brake actuator to apply the brakes.

        • At this time, if the deceleration rate is higher than a predetermined value, the skid control ECU outputs a stop light illumination request signal to the stop lights in order to warn any vehicles behind.

          A001MVTE01

        • If the vehicle is not decelerating adequately, the forward recognition camera (camera sensor) sounds a pre-collision city buzzer to prompt the driver to apply the brakes.

          A001NAGE01

      2. Follow-up Control Function


        • After performing deceleration control, the millimeter wave radar sensor assembly transmits a request signal to the ECM so that the vehicle can follow the vehicle ahead while maintaining the proper vehicle-to-vehicle distance according to the vehicle speed. Upon receiving this signal, the ECM regulates the throttle in order to perform follow-up control.

        • 3 stages (long, middle and short) of vehicle-to-vehicle distance can be selected by operating the vehicle-to-vehicle distance control switch.

          A001N8TE01

      3. Acceleration Control Function


        • If the millimeter wave radar sensor assembly detects (based on the millimeter wave radar sensor and forward recognition camera (camera sensor)) that either the vehicle ahead or the driver has changed lanes, an acceleration request signal is transmitted to the ECM in order to attain the set vehicle speed. Upon receiving this signal, the ECM regulates the throttle in order to perform acceleration control.

          A001MIKE01

      4. Stop Control Function (Models with Full-speed Range Following Function)


        • During vehicle-to-vehicle distance control mode, if the vehicle ahead stops, the millimeter wave radar sensor assembly maintains an appropriate vehicle-to-vehicle distance while at the same time calculating the necessary driving force to stop the vehicle, and sends a drive request signal to the ECM and skid control ECU. When the ECM and skid control ECU receive this signal, they control the driving force and stop the vehicle.

        • At this time, the skid control ECU outputs a stop light illumination request signal in order to inform anyone who might be following the vehicle.

        • The distance between the driver's own vehicle and the preceding vehicle when the vehicles are stopped is set to approximately 3 m to 6 m (10 ft. to 20 ft.) regardless of the vehicle-to-vehicle distance preset by using the distance control switch.

          A001N0GE01

      5. Stop Retention Control Function (Models with Full-speed Range Following Function)


        • After the vehicle has stopped under stop control, the ECM transmits a stop retention request signal to the skid control ECU. Upon receiving this signal, the skid control ECU activates the brake hold function and keeps the vehicle stopped.

        • When the vehicle is stopped by brake hold function, the idle stop control may occur by stop and start system.

          A001MV5E01

      6. Start Control Function (Models with Full-speed Range Following Function)


        • When the millimeter wave radar sensor assembly detects that the vehicle ahead starts moving again, it displays the messages "Operate Cruise Lever or Accelerator Pedal to Resume" on the multi-information display to urge the driver to perform the start-off operation (to push the cruise control main switch to the +RES side or to depress the accelerator pedal).

        • Upon receiving the start-off operation signal generated by pushing the cruise control main switch assembly to the +RES side or by depressing the accelerator pedal, the millimeter wave radar sensor assembly transmits a motive force request signal to the ECM. Upon receiving this signal, the ECM controls the motive force, starts the vehicle and resumes follow-up control.

        • During idle stop status, engine starts automatically when the ECU detects the movement of preceding vehicle.

          A001NARE01

      7. Automatic Cancel Control


        • If one of the conditions listed below occurs while the vehicle is being driven using cruise control, speed control by the cruise control system will be canceled. Then, the following warning items will appear for the driver.

          Constant Speed Control Mode
          Description of Malfunction Warning
          Multi-information Display Master Warning Light Buzzer

          If the condition listed below occurs, the ECM clears the set vehicle speed and cancels speed control by the cruise control system.


          • An open or short circuit in the stop light switch.

          Speed control by the cruise control system is disabled until the conditions are corrected or the cruise control system is turned off and back on again using the ON-OFF button on the cruise control main switch.

          Check Cruise Control System.

          Visit Your Dealer.

          		 Illuminates Sounds

          If the condition listed below occurs, the ECM clears the set vehicle speed and cancels speed control by the cruise control system.


          • Malfunction in SFI system

          Speed control by the cruise control system is disabled until the condition is corrected or the cruise control system is turned off and back on again using the ON-OFF button on the cruise control main switch.

          		 - Illuminates -

          If either of the conditions listed below occurs, the ECM clears the set vehicle speed and cancels speed control by the cruise control system.


          • Stop light switch assembly input signal is abnormal.

          • Cancel circuit malfunction.

          • Brake control system malfunction.

          • Communication malfunction between the skid control ECU and ECM.

          Speed control by the cruise control system is disabled until the ignition switch is turned ON again.

          Check Cruise Control System.

          Visit Your Dealer.

          		 Illuminates Sounds

          If the condition listed below occurs, the ECM clears the set vehicle speed and cancels speed control by the cruise control system.


          • The vehicle speed drops more than 16 km/h (10 mph) below the set vehicle speed.

          		 - - -

          If the condition listed below occurs, the ECM cancels speed control by the cruise control system while retaining the set vehicle speed in its memory.


          • The vehicle speed drops below the low speed limit [approximately 40 km/h (25 mph)].

          		 - - -

          If either of the conditions listed below occurs, the ECM clears the set vehicle speed and cancels speed control by the cruise control system.


          • VSC operates during cruise control driving.

          • TRC operates for a certain period of time during cruise control driving.

          • TRC is off or VSC is off.

          • DSC operates during cruise control driving.

          		 - - -
          Vehicle-to-vehicle Distance Control Mode
          Description of Malfunction Warning
          Multi-information Display Master Warning Light Buzzer

          If the condition listed below occurs, ECM clears the set vehicle speed and cancels speed control by the cruise control system.


          • An open or short circuit in the stop light switch.

          Cruise control is prohibited until the normal operating conditions are met or the cruise control system is turned off and back on again using the ON-OFF button on the cruise control main switch.

          Check Cruise Control System.

          Visit Your Dealer.

          		 Illuminates Sounds

          If one of the conditions listed below occurs, the ECM clears the set vehicle speed and cancels speed control by the cruise control system.


          • Malfunction of the millimeter wave radar sensor assembly.

          • Misalignment of the axis of the millimeter wave radar sensor assembly.

          • Malfunction in the electric parking brake system.*

          • Stop light switch assembly input signal is abnormal.

          • Cancel circuit malfunction.

          Speed control by the cruise control system is disabled until the ignition switch is turned ON again.

          Check Cruise Control System.

          Visit Your Dealer.

          		 Illuminates Sounds

          If the condition listed below occurs, the ECM cancels speed control by the cruise control system while retaining the set vehicle speed in its memory.


          • The millimeter wave radar sensor assembly or the emblem are dirty.

          Speed control by the cruise control system is prohibited until the condition is corrected or the cruise control system is turned off and back on again using the ON-OFF button on the cruise control main switch.

          		 Clean Radar Sensor. Illuminates Sounds

          If either of the conditions listed below occurs, the ECM cancels speed control by the cruise control system while retaining the set vehicle speed in its memory.


          • The measurement becomes extremely unstable due to poor weather conditions.

          • Brake control by the dynamic radar cruise control system is temporarily unavailable.

          • The beam axis of the millimeter wave radar sensor assembly is being aligned.

          • The forward recognition camera (camera sensor) is temporarily unavailable.

          • A system check is being performed after the engine has started.

          Speed control by the cruise control system is prohibited until the condition is corrected or the cruise control system is turned off and back on again using the ON-OFF button on the cruise control main switch.

          		 Cruise Control Unavailable. Illuminates Sounds

          If the condition listed below occurs, the ECM clears the set vehicle speed and cancels speed control by the cruise control system.


          • Malfunction in SFI system

          Speed control by the cruise control system is prohibited until the condition is corrected or the cruise control system is turned off and back on again using the ON-OFF button on the cruise control main switch.

          		 - Illuminates -

          If the condition listed below occurs, the ECM cancels speed control by the cruise control system while retaining the set vehicle speed in its memory.


          • The vehicle speed drops below the low speed limit (approximately 40 km/h [25 mph]).

          		 - - Sounds Twice

          If either of the conditions listed below occurs, the ECM clears the set vehicle speed and cancels speed control by the cruise control system.


          • VSC operates during cruise control driving.

          • TRC operates for a certain period of time during cruise control driving.

          • TRC is off or VSC is off.

          • DSC operates during cruise control driving.

          • Electric parking brake operates.*

          		 - - -

          If any of the following conditions occur while the vehicle stopped, the ECM cancels control of vehicle speed by the dynamic radar cruise control system.*


          • The driver seat belt is unfastened.

          • The driver door is opened.

          • The vehicle is parked for a long period of time.

          • The vehicle is driving on as steep hill.

          • A preceding vehicle is not detected.

          Cruise Control Unavailable.

          Depress The Brake Pedal.

          		 - -

          If either of the conditions listed below occurs, the ECM cancels speed control by the cruise control system while retaining the set vehicle speed in its memory.*


          • Stop light switch assembly input signal is abnormal.

          • Malfunction in the millimeter wave radar sensor assembly.

          • Beam axis of millimeter wave radar sensor assembly misaligned.

          • The electric parking brake system is malfunctioning.

          • An open or short circuit in the stop light switch.

          • Problem with cruise control main switch cancel circuit.

          • Millimeter wave radar sensor assembly becomes dirty.

          • Brake control by the dynamic radar cruise control system is temporarily unavailable.

          • The forward recognition camera (camera sensor) is temporarily unavailable.

          • A system check is being performed after the engine has started.

          Check Cruise Control System.

          Depress The Brake Pedal.

          Visit Your Dealer.

          		 Illuminates Sounds

          *: Models with full-speed range following function

  4. DIAGNOSIS


    1. If a malfunction occurs in the dynamic radar cruise control system during cruise control operation, the ECM and millimeter wave radar sensor assembly cancels cruise control operation, illuminates the master warning light and turns off the cruise control indicator light (constant speed control mode) or cruise control indicator light (vehicle-to-vehicle distance control mode), and cruise SET indicator light. Also, "Cruise Control Malfunction Visit Your Dealer" is displayed on the multi-information display to inform the driver of a malfunction. At the same time, the malfunction is stored in memory as a 7-digit Diagnostic Trouble Code (DTC).

    2. The DTC can be read when the Global TechStream (GTS) is connected to the DLC3. For details, refer to the Repair Manual.