LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2013 >> Prius Plug-in >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Audio / Video System (Diagnostics - Introduction) (Plug-In) >> Audio And Visual System >> Operation Check >> Operation Check
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Operation Check

  1. CHECK PANEL & STEERING SWITCH 

    HINT: 

    • The radio and display receiver assembly panel switches and steering switches are checked in the following procedure.
    • Illustrations may differ from the actual vehicle screen depending on the device settings and options. Therefore, some detailed areas may not be shown exactly the same as on the actual vehicle screen.
    1. Enter diagnostic mode. Refer to DTC CHECK / CLEAR .
    2. Select "Function Check/Setting" from the "Service Menu" screen.
      Fig 1: Screen Display - Function Check/Setting
      GTY318658Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Select "Panel & Steering Switch" from the "Function Check/Setting I" screen.
      Fig 2: Screen Display - Panel & Steering Switch
      GTY321046Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Panel & Steering Switch Check Mode
      Fig 3: Screen Display - Panel & Steering Switch Check Mode
      GTY320716Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      SCREEN DESCRIPTION

      Display Content
      *a: Switch condition "Pushed" is displayed when any switch is pushed
      *b: Number of switches pushed
      • Number of switches pushed at once is displayed
      • If more than 3 switches are pushed at once, "More than 3" is displayed
      *c: Rotary switch direction Direction of rotary switch is displayed
      1. Operate each switch and check that the switch conditions are correctly displayed.
        NOTE:

        When the "SETUP" switch is pressed and held for 3 seconds or more, diagnostic mode will be canceled.

  2. CHECK TOUCH SWITCH 

    HINT: 

    • The touch switches on the screen are checked in the following procedure.
    • Illustrations may differ from the actual vehicle screen depending on the device settings and options. Therefore, some detailed areas may not be shown exactly the same as on the actual vehicle screen.
    1. Enter diagnostic mode. Refer to DTC CHECK / CLEAR .
    2. Select "Function Check/Setting" from the "Service Menu" screen.
      Fig 4: Screen Display - Function Check/Setting
      GTY318658Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Select "Touch Switch" from the "Function Check/Setting I" screen.
      Fig 5: Screen Display - Touch Switch
      GTY321044Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Touch Switch Check
      Fig 6: Screen Display - Touch Switch Check
      GTY180423Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Touch the display anywhere in the open area to perform the check when the "Touch Switch Check" screen is displayed.

        HINT: 

        • A "+" mark is displayed where the display is touched.
        • The "+" mark remains on the display even after the finger is removed.
  3. CHECK MICROPHONE & VOICE RECOGNITION 

    HINT: 

    • The microphone and microphone input level are checked in the following procedure.
    • Illustrations may differ from the actual vehicle screen depending on the device settings and options. Therefore, some detailed areas may not be shown exactly the same as on the actual vehicle screen.
    1. Enter diagnostic mode. Refer to DTC CHECK / CLEAR .
    2. Select "Function Check/Setting" from the "Service Menu" screen.
      Fig 7: Screen Display - Function Check/Setting
      GTY318658Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Select "Mic & Voice Recognition" from the "Function Check/Setting I" screen.
      Fig 8: Screen Display - Mic & Voice Recognition
      GTY321042Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Microphone & Voice Recognition Check
      Fig 9: Screen Display - Microphone & Voice Recognition Check
      GTY337256Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      SCREEN DESCRIPTION

      Display Content
      *a: Microphone input level meter Monitors the microphone input level every 0.1 seconds and displays the results in 8 different levels.
      1. When speaking into the microphone, check that the microphone input level meter changes according to the input level.

        HINT: 

        The microphone is active at all times when this screen is displayed.

  4. CHECK COLOR BAR 

    HINT: 

    • The display color on the screen is checked in the following procedure.
    • Illustrations may differ from the actual vehicle screen depending on the device settings and options. Therefore, some detailed areas may not be shown exactly the same as on the actual vehicle screen.
    1. Enter diagnostic mode. Refer to DTC CHECK / CLEAR .
    2. Select "Function Check/Setting" from the "Service Menu" screen.
      Fig 10: Screen Display - Function Check/Setting
      GTY318658Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Select "Color Bar" from the "Function Check/Setting I" screen.
      Fig 11: Screen Display - Color Bar
      GTY321043Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Color Bar Check Mode
      Fig 12: View Of Color Bar Check Mode Screen
      GTY320543Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Select a color bar from the "Color Bar Check Mode" screen.
      2. Check the display color.

        HINT: 

        • The entire screen turns to the color or stripe selected.
        • Touching the display will return to the "Color Bar Check Mode" screen.
  5. CHECK VEHICLE SIGNALS 

    HINT: 

    • Vehicle signals received by the radio and display receiver assembly are checked in the following procedure.
    • Illustrations may differ from the actual vehicle screen depending on the device settings and options. Therefore, some detailed areas may not be shown exactly the same as on the actual vehicle screen.
    1. Enter diagnostic mode. Refer to DTC CHECK / CLEAR .
    2. Select "Function Check/Setting" from the "Service Menu" screen.
      Fig 13: Screen Display - Function Check/Setting
      GTY318658Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Select "Vehicle Signal" from the "Function Check/Setting I" screen.
      Fig 14: Screen Display - Vehicle Signal
      GTY321037Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Vehicle Signal Check Mode
      Fig 15: Screen Display - Vehicle Signal Check Mode
      GTY319007Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      SCREEN DESCRIPTION

      Display Content
      Battery Auxiliary battery voltage is displayed.
      IG Power switch ON/OFF state is displayed.
      PKB Parking brake ON/OFF state is displayed.
      REV Reverse signal ON/OFF state is displayed.
      SPEED Vehicle speed is displayed in km/h.
      TAIL Tail signal (Light control switch) ON/OFF state is displayed.
      ADIM/TCAN Brightness state DIM (with) / BRIGHT (without) is displayed.

      HINT: 

      • Only items sending vehicle signals will be displayed.
      • This screen displays vehicle signals input to the radio and display receiver assembly.
      • This screen is updated once per second when vehicle input signals change.
      1. When the "Vehicle Signal Check Mode" screen is displayed, check all the vehicle signal conditions.
  6. CHECK HANDS-FREE VOICE QUALITY AND VOLUME SETTING 

    HINT: 

    • The hands-free volume of a "Bluetooth" compatible phone can be adjusted using the following procedure.
    • Illustrations may differ from the actual vehicle screen depending on the device settings and options. Therefore, some detailed areas may not be shown exactly the same as on the actual vehicle screen.
    1. Enter diagnostic mode. Refer to DTC CHECK / CLEAR .
    2. Select "Function Check/Setting" from the "Service Menu" screen.
      Fig 16: Screen Display - Function Check/Setting
      GTY318658Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Select "HF Voice Quality Setting" from the "Function Check/Setting I" screen.
      Fig 17: Screen Display - HF Voice Quality Setting
      GTY321036Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Hands-Free Voice Quality Setting (Receive/Send Voice Level adjustment)
      Fig 18: Screen Display - Hands-Free Voice Quality Setting
      GTY320044Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      SCREEN DESCRIPTION

      Display Content
      *a: Receive voice level adjustment Setting for the voice level received from "Bluetooth" compatible phones.
      *b: Send voice level adjustment Setting for the voice level sent from "Bluetooth" compatible phones.
      NOTE:

      Sound quality may deteriorate when the receive voice or send voice level is changed more than necessary. For this reason, check that the received voice or sent voice quality is still acceptable after changing this setting.

      1. If the voice level is low, press the up button, and if the voice level is loud, press the down button.

        HINT: 

        • Each voice level setting is reflected when going back to the normal mode.
        • The voice level adjustment ranges from -5 to +5.
        • The initial level is "0".
    5. Hands-Free Voice Quality Setting (Voice Quality Type adjustment)
      Fig 19: Screen Display - Hands-Free Voice Quality Setting
      GTY317861Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Numeric keypad
      *b Setting button
      *c Reset button
      1. If necessary, refer to the table below to adjust the voice quality type with the numeric keypad.
      2. When adjusting the settings, use the number pad on the screen to input the voice quality type according to the table.
        SETTING

        Parameter Target Phenomenon Voice Quality Type (FUJITSU TEN) Voice Quality Type (Panasonic) Voice Quality Type (Pioneer) Positive Effects of Changing Voice Quality Negative Effects of Changing Voice Quality
        Echo The other party hears a lot of echo when speaking to you. 1000
        2000
        0001 0001
        0002
        0003
        0004
        0005
        The amount of echo the other party hears of their own voice is reduced. When both parties speak at the same time, your voice suddenly drops in volume, cuts out etc.
        Half Duplex When both parties speak at the same time, your voice suddenly drops in volume, cuts out etc. 0100
        0200
        0002 0010
        0020
        0030
        0040
        0050
        When both parties speak at the same time, the phenomenon by which the other party's voice suddenly drops in volume, cuts out etc. reduces. The amount of echo the other party hears of their own voice increases.
        Noise The other party hears a lot of vehicle noise etc. when listening to your voice. 0010
        0020
        - 0100
        0200
        0300
        0400
        0500
        The amount of vehicle noise etc. the other party hears when listening to your voice reduces. The quality of your voice, that the other party hears, reduces.
        Voice Quality The quality of your voice, that the other party hears, is low. 0001
        0002
        0003 1000
        2000
        3000
        4000
        5000
        The quality of your voice, that the other party hears, increases. The amount of noise etc. the other party hears when listening to your voice increases.

        HINT: 

        • Refer to the "Unit Version Information" screen to confirm radio and display receiver assembly manufacturer information.
        • The type of adjustments that can be made using voice quality type adjustment only adjust the sound quality of your voice that the other party hears. It cannot adjust the sound quality of the other party's voice that you hear.
        • The default value is "0000".
        • Settings will be applied when the normal screen is returned to.
        • When multiple setting values are available, the higher the setting value, the bigger the effect. However, as the positive effects increase, so do the negative effects.
        • If voice quality type values that are not in the table are input, the setting will not be applied and a positive effect may not be gained.
        • If the quality of phone calls decreases due to the changed settings, return the settings to "0000" by pressing the "INIT" switch.
  7. CHECK UNIT VERSION INFORMATION 

    HINT: 

    Illustrations may differ from the actual vehicle screen depending on the device settings and options. Therefore, some detailed areas may not be shown exactly the same as on the actual vehicle screen.

    1. Enter diagnostic mode. Refer to DTC CHECK / CLEAR .
    2. Select "Service Information" from the "Service Menu" screen.
      Fig 20: Screen Display - Service Information
      GTY318415Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Select "Version Information" from the "Service Information" screen.
      Fig 21: Screen Display - Version Information
      GTY321529Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Press the "Push" switch.
      Fig 22: Screen Display - Push
      GTY340056Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Unit Version Information
      Fig 23: Screen Display - Unit Version Information
      GTY317184Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      SCREEN DESCRIPTION

      Display Content
      *a: Device name Target device
      *b: Manufacturer name Manufacturer of the ECU (target device)
      *c: Component name Component name of the ECU (target device)
      *d: Version Version of the ECU (target device)

      HINT: 

      Depending on the manufacturer, some component names and versions will be displayed differently.

  8. CHECK SOFTWARE ERROR HISTORY 

    HINT: 

    This function is used to check the cause when the radio and display receiver assembly screen is blacked out.

    1. Check software error history.
      1. Connect the Techstream to the DLC3.
      2. Turn the power switch on (READY).
      3. Turn the Techstream on.
      4. Enter the following menus: Body Electrical / Navigation System / Utility / Software Error History.
      5. When an item is stored for Software Error History, record it before repairing the radio and display receiver assembly.
        SOFTWARE ERROR HISTORY SCREEN DESCRIPTION

        Error Description Trigger Detail
        Software Reset Navi Microcomputer Hexadecimal Number
        Audio Microcomputer
        CAN Microcomputer
        No Video Signal Front Monitor
        Rear Monitor
        MOST Cold Restart Always

        HINT: 

        • Software Error History can store up to 5 history data items. If a new software error occurs when 5 data items have already been stored, the oldest data is cleared and the new data is stored.
        • If an error that is unsupported by the Techstream occurs, a "-" is displayed for the display items.
    2. Clear software error history.
      1. When DTCs are cleared using any of the following operations, Software Error History will be cleared as well. Refer to DTC CHECK / CLEAR .
        • Cleared using the Techstream.
        • Cleared using the system check mode screen.
        • Cleared using the unit check mode screen.
  9. CHECK OPTICAL DISC ERROR HISTORY 

    HINT: 

    This function is used to check the cause of an optical disc error.

    1. Check optical disc error history.
      1. Connect the Techstream to the DLC3.
      2. Turn the power switch on (READY).
      3. Turn the Techstream on.
      4. Enter the following menus: Body Electrical / Navigation System / Utility / Optical Disc Error History.
      5. When an item is stored for Optical Disc Error History, record it before proceeding with troubleshooting.
        OPTICAL DISC ERROR HISTORY SCREEN DESCRIPTION

        Display Content
        Error Type Displays the type of error.
        Device Displays the malfunctioning device.
        Date Displays the date and time that the malfunction occurred.
        "ERROR TYPE" SCREEN DESCRIPTION

        Error Type Detection Condition Action
        Read Error When a disc read error occurs. Proceed to next suspected area shown in Problem Symptoms Table. Refer to PROBLEM SYMPTOMS TABLE 
        Disc damaged/upside down/dirty When it is determined that any of the following is the cause of the disc read error:
        • The disc cannot be read.
        • The disc cannot be read because of dirt or scratches.
        • The disc cannot be read because it is inserted upside down.
        Cannot determine disc type An unsuitable disc is inserted.
        DPS error When an error occurs while decoding MP3/WMA files.
        Some files are corrupt
        • When MP3/WMA files cannot be played back because they are unsupported.
        • Even though the file extensions are MP3 or WMA, files cannot be played back because the header information cannot be read.
        Some files cannot be found
        • When a disc without music data is played back.
        • When there are no playable MP3/WMA files.
        Copy protection violation When a file with copyright protection that cannot be played back is played back.
        "DEVICE" SCREEN DESCRIPTION

        Device Component
        DVD-P Not available
        CD-P Radio and display receiver assembly
        R-Seat DVD-P Not available

        HINT: 

        • Optical Disc Error History can store up to 7 history data items. If a new optical disc error occurs when 7 data items have already been stored, the oldest data is cleared and the new data is stored.
        • If an error that is unsupported by the Techstream occurs, a "-" or blank is displayed for the display items.
    2. Clear optical disc error history.
      1. When DTCs are cleared using any of the following operations, Optical Disc Error History will be cleared as well. Refer to DTC CHECK / CLEAR .
        • Cleared using the Techstream.
        • Cleared using the system check mode screen.
        • Cleared using the unit check mode screen.