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Home >> Lexus >> 2017 >> ES 300h >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Parking Assist Monitor System (W/O Parallel Parking Assist Function) (Diagnostics - Introduction) >> PARKING ASSIST MONITOR SYSTEM (w/o Parallel Parking Assist Function) >> System Description [08/2016 - ] >> System Description [08/2016 - ]

System Description [08/2016 - ]

  1. GENERAL 
    1. This system has a rear television camera assembly mounted on the luggage compartment door to display an image of the area behind the vehicle on the multi-display. The multi-display also shows a composite view consisting of the area behind the vehicle and parking guide lines to assist the driver in parking the vehicle by monitoring the area behind the vehicle.
    2. This system consists of the following components:
      1. Rear television camera assembly
      2. Radio receiver assembly
      3. Multi-display assembly
      4. Spiral cable with sensor sub-assembly
      5. Main body ECU (multiplex network body ECU)
      6. Brake booster with master cylinder assembly (skid control ECU)
      7. Clearance warning ECU assembly*
      8. Engine room junction block assembly
        • *: w/ Intuitive Parking Assist System
    3. This system is equipped with a self-diagnosis system, which is operated on a designated window that appears on the multi-display.
  2. FUNCTION OF COMPONENTS 
    1. The rear television camera assembly controls the system by using information from the following components.
      Item Function
      Rear television Camera Assembly
      • Mounted on the luggage compartment door to transmit a composite image of the area behind the vehicle and guide lines calculated based on signals received from each ECU, to the multi-display assembly.
      • Has a color video camera that uses a Complementary Metal Oxide Semiconductor (CMOS) and wide-angle lens.
      • Stops displaying the guide lines when an open signal is received for the luggage compartment door.
      • Performs overall control of the system by receiving signals from the sensor and ECUs.
      Multi-display Assembly
      • Receives video signals which contain a composite image of the area behind the vehicle taken with the rear television camera assembly and guide lines calculated based on signals received from each ECU.
      • Performs control of the system by receiving the reverse signal from the engine room junction block assembly.
      • Receives diagnostic mode video signals from the rear television camera assembly.
      • Displays "Back door is open. Do not use the rear view monitor when the back door is not completely closed." on the back camera position setting screen when the luggage compartment door is open.
      Radio Receiver Assembly Transmits a setting information signal to the rear television camera assembly via CAN communication.
      Spiral Cable with Sensor Sub-assembly Detects the angle of the steering wheel and transmits the resulting signals to the rear television camera assembly via CAN communication.
      Hybrid Vehicle Control ECU Assembly Transmits a reverse signal to the engine room junction block assembly.
      Engine Room Junction Block Assembly
      • Receives the reverse signal from the hybrid vehicle control ECU assembly.
      • Transmits a reverse signal to the multi-display assembly.
      Brake Booster with Master Cylinder Assembly (Skid Control ECU) Transmits a vehicle speed signal to the rear television camera assembly via CAN communication.
      Main Body ECU (Multiplex Network Body ECU)
      • Transmits a luggage compartment door courtesy switch signal to the rear television camera assembly via CAN communication.
      • Transmits a vehicle information signal to the rear television camera assembly via CAN communication.
      Clearance Warning ECU Assembly* Transmits a sonar information signal to the rear television camera assembly via CAN communication.
      • *: w/ Intuitive Parking Assist System
  3. OPERATION EXPLANATION 
    1. The multi-display assembly receives the reverse signal when the power switch is on (IG) and the shift lever is moved to R. After receiving the reverse signal, the multi-display switches to the parking assist monitor system.
  4. DISPLAY MODE 
    Fig 1: Display Modes
    GTY670974Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TEXT IN ILLUSTRATION

    *a Estimated Course Line Display Mode *b Parking Assist Guide Line Display Mode
    *c Distance Guide Line Display Mode - -
    1. Parking Assist Monitor Display Mode
      Parking Assist Monitor Display Mode Distance Guide Lines
      (Red)      		 Estimated Course Lines
      (Yellow)      		 Distance Guide Lines
      (Yellow)      		 Vehicle Width Extension Guide Line
      (Blue)      		 Distance Guide Line
      (Blue)      		 Parking Assist Guide Lines
      (Blue)      		 Vehicle Center Line
      (Blue)
      Estimated course line display mode Displayed Displayed Displayed Displayed Displayed Not displayed Displayed
      Parking assist guide line display mode Displayed Not displayed Not displayed Displayed Not displayed Displayed* Displayed
      Distance guide line display mode Displayed Not displayed Not displayed Not displayed Not displayed Not displayed Not displayed
      • *: Depending on the destination, the length of the guide lines may differ.
  5. DIAGNOSTIC FUNCTION OUTLINE 
    1. This parking assist monitor system has a diagnostic function displayed on the multi-display. This function enables calibration (adjustment and verification) of the parking assist monitor system. Refer to DIAGNOSIS SYSTEM [07/2015 - ] 
    2. The following items for the parking assist monitor system can be checked using the Techstream.
      Item Proceed to
      DTC Refer to DTC CHECK / CLEAR [07/2015 - ] 
      Data List / Active Test Refer to DATA LIST / ACTIVE TEST [07/2015 - ] 
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