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Section 19 (Navigation System - Diagnosis): Pre-Check

WARNING: This page is about a different car, the 2004 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
  1. USER TROUBLES UNDER NORMAL CONDITION OF THE NAVIGATION SYSTEM 
    1. Voice guidance does not perform in the following situation even if the system is in normal condition.
      1. The destination is not set up.
      2. The vehicle is not driving on the set route. (The remaining distance is not displayed at the lower left of the map screen that tells the current position of the vehicle.)
      3. "Guidance in Other Modes" is not set up. (In this case no voice guidance is given except on the map screen.)
    2. The vehicle icon or map turns around arbitrarily on the screen even when the system is in normal condition.

      If the ignition switch is turned to "ACC" or "ON" while the vehicle is turning around such as being on a turntable, the Navigation System memorizes the angle speed of that moment as the standard figure. To solve this problem, at the vehicle speed of 0 MPH (0 km/h), turn off the ignition switch, and then turn it to "ACC" or "ON" again to see whether any trouble occurs again.

  2. INSPECTION OF THE LOCATION WITH TROUBLE OCCURRENCE 
    1. Check whether the wrong display of the vehicle icon appears in a certain location or in several locations.
      NOTE: It is difficult to determine the accurate vehicle position when driving on a freeway, a looped road or a road which runs in parallel with another, and immediately after going out of the parking area. In such cases the vehicle icon can be displayed off the real position of the vehicle.
  3. OUTLINE OF AVC-LAN 
    1. Each unit of the navigation system connected with AVC-LAN (communication bus) transmits a signal of each switch. When +B or GND shorts out in this AVC-LAN, the navigation system will not function normally as the communication is discontinued. In this AVC-LAN, the radio receiver assy becomes the master of the communication, having resistance necessary for transmitting the signals.
      Fig 1: Identifying AVC-LAN Circuit
      G02934001Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. DIAGNOSIS SYSTEM MODE 
    Fig 2: Identifying Navigation System Diagnosis Mode
    G02934002Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Start-up and finishing of the diagnosis.
      NOTE: Before starting the diagnosis system, make sure that the map appears on the screen after turning the IG switch ON.

      If not, some items cannot be checked.

    2. Diagnosis start-up by the light control switch.
      1. Vehicle speed should be 0 km/h (0 mph).
      2. Turn the ignition switch to ACC or ON.
      3. While pressing the "INFO" switches on the radio receiver assy, turn the light control switch from OFF -> TAIL -> OFF -> TAIL -> OFF -> TAIL -> OFF.
        DISPLAY DESCRIPTION

        Display Description
        System Check By performing system check and collecting data of diagnosis memory, this mode checks the current and past condition of each connection device.
        Display Check It displays the Display Check on the screen.
        Navigation Check It displays the Navigation ECU Check on the screen.
        Fig 3: Locating INFO Switch On Radio Receiver
        G02934003Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE:
        • When the diagnosis system starts, the system check screen is displayed and the system check begins.
        • Select MENU to display diagnosis menu.
          Fig 4: Locating Diagnosis Menu display
          G02934004Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Diagnosis start-up by the touch switch.
        1. Vehicle speed should be 0 km/h (0 mph).
        2. Apply the parking brake.
        3. Turn the ignition switch to ACC or ON.
        4. Activate the screen adjustment screen.
        5. Alternately touch the upper and lower bottom parts of the left end of the screen 3 times.
      5. Finishing the diagnosis system.

        Turn the ignition switch to OFF to finish the mode.

        Fig 5: Locating Canceled Touch Switch
        G02934005Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. SYSTEM CHECK MODE 
      Fig 6: Identifying System Check Mode
      G02934006Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. System Check Mode
        1. Start the diagnosis system.
          DISPLAY ITEM & FUNCTION.

          Display Item Function
          CHECK/*2 Check results are displayed.
          MEMORY CLEAR/*3 Pressing this switch for 3 sec. deletes all the information about master component registration.
          CODE CLEAR/*4 Pressing this switch for 3 sec. deletes diagnosis memory for all the components. It deletes System Check results and the screen displaying the check results.
          RECHECK/*5 Pressing this switch performs System Check again.
          Menu/*6 Pressing this switch activates the Diagnosis Menu screen.
          LAN Mon/*7 Pressing this switch activates the LAN monitor screen.
          Fig 7: Locating System Check Mode Display
          G02934007Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

          Components:/*1 

          DISPLAY NAME

          Display Name
          NAVI Navigation ECU assy
          AVX Radio receiver assy
          DSP-AMP Stereo component amplifier assy
          RSE-ECU Multi-display controller sub-assy
          RSA-M Stereo component controller assy
          NOTE: System check displays the check results based on the information obtained from each component's response to "System Check Execution" and "Diagnosis Memory Request", and the information of "Current DTC Notification" (the Unit Check Mode and the LAN Monitor information that will be displayed on the next screens.).
        2. Read Check Result
          CHECK RESULT

          Check Result Meaning
          OK No DTC is identified.
          EXCH One or more DTC requesting for exchange are detected.
          CHEK One or more DTC requesting for check are detected.
          NCON No connection response to Diagnosis System start-up, where as it has the connection response to the AVC-LAN system when the power switch is turned on (when IG is turned to ACC).
          Old One or more DTC are detected because of old version.
          NRES No response to the information about the Diagnosis System, where as it responds to the Diagnosis System start-up.
          No Err No DTC is identified.
          NOTE:
          • After repair and check, press "CODE CLEAR" for more than 3 sec. to delete the diagnosis memory.
          • After deleting the diagnosis memory, press "RECHECK" and make sure "OK" is displayed on the screen.
        3. "EXCH", "CHEK" and "Old" can be used as switches to activate "Unit Check Mode" for detail information. Check troubled parts of the components in these modes by referring to the DTC code list.
          DISPLAY ITEM DESCRIPTION

          Display Item Description
          Components name/*1 Names of components to be checked are displayed.
          Code CLR/*2 Pressing this switch for 3 sec. deletes DTC memory of the selected diagnosis component.
          Service/*3 Pressing this returns to the System Check Mode screen.
          Date/Time/*4 The date and time stamped at the time of DTC occurrence are displayed in the order of year-month-day-hour-minute-second. (If the date and time data is invalid, it is displayed as a blank.)
          Current/*5 Up to 6 DTC codes detected during the System Check are displayed.
          Memory/*6 DTC memories stored and current DTC Notification are displayed.
          Fig 8: Locating Unit Check Mode NAVI Display
          G02934008Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
          NOTE:
          • Detecting Unit DTC activates the Unit Check Mode on the screen.
          • In the Unit Check Mode, DTC identified as "EXCH" in the System Check is displayed as classified into Current DTC and Past DTC.
      2. LAN Monitor
        1. Start the Diagnosis System.
        2. Select "LAN Mon".
          DISPLAY ITEM & FUNCTION

          Display Item Function
          CHECK/*1 Check results are displayed.
          MENU/*2 Pressing this switch activates the "System Check Mode.
          BACK/*3 Pressing this switch activates the "System Check Mode."
          Fig 9: Locating LAN Monitor Display
          G02934009Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
          NOTE: System Check displays the check results based on the information obtained from each component's response to "System Check Execution" and "Diagnosis Memory Request", and the information of "Current DTC Notification" (the LAN Monitor that will be displayed on the next screens).
        3. Read Check Result
          CHECK RESULT

          Check Result Meaning
          OK No DTC is identified.
          EXCH One or more DTC requesting for exchange are detected.
          CHEK One or more DTC requesting for check are detected.
          NCON No connection response to Diagnosis System start-up, where as it has the connection response to the AVC-LAN system when the power switch is turned on (when IG is turned to ACC).
          Old One or more DTC are detected because of old version.
          NRES No response to the information about the Diagnosis System, where as it responds to the Diagnosis System start-up.
          No Err No DTC is identified.
          NOTE:
          • After repair and check, press "Code CLR" for more than 3 sec. to delete the diagnosis memory.
          • After deleting the diagnosis memory, press "Recheck" and make sure "OK" is displayed on the screen.
        4. "CHEK" can be used as switches to activate "LAN Monitor" for detail information. Check troubled parts of the components in these modes by referring to the DTC code list.
          LOCATING DISPLAY ITEM DESCRIPTION

          Display Item Description
          Components name/*1 Names of components to be checked are displayed.
          Segment/*2 Logical address codes corresponding to DTC are displayed.
          DTC/*3 DTC is displayed.
          Sub-Code (address numbers of related components)/*4 Physical address codes memorized together with DTC are displayed.
          Sub-code (Connection confirmation number) /*5 Connection confirmation numbers memorized together with DTC are displayed.
          Sub-code (Number of occurrence) /*6 The number of occurrence of the same DTC is displayed.
          Service/*7 Pressing this returns to the "LAN Monitor".
          Fig 10: Locating LAN Monitor NAVI Display
          G02934010Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
          NOTE: Detecting no LAN DTC activates the LAN Monitor on the screen.
    4. DISPLAY CHECK MODE 
      Fig 11: Identifying Checking Mode Display
      G02934011Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Display Check
        1. Start the diagnosis system.
        2. Select "MENU".
        3. Select "Display Check".
          DISPLAY CONTENTS

          Display Contents
          Color Bar Check/*1 Color display is checked.
          Touch Switch Check/*2 Operating condition of touch switch display is checked.
          Touch Point Check/*3 Operating condition of touch point display is checked.
          Panel Switch Check/*4 Operating condition of switches on both sides of the display is checked.
          Vehicle Signal Check/*5 Status of the vehicle signal which has been loaded into the display is checked.
          MENU/*6 Pressing this switch activates the "Diagnosis MENU".
          Fig 12: Locating Display Check Menu Display
          G02934012Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
          NOTE: In Display Check, above checks can be performed.
      2. Display Color Bar Check
        1. Start the Diagnosis System.
        2. Select "MENU".
        3. Select "Display Check".
        4. Select "Color Bar Check".
        5. Make sure that each color name is corresponding to each color on the bar.
          NOTE: Select Black, Red, Green, Blue, White and Stripe to display selected colors and stripes on the entire screen.
        6. Compare with the Color Bar Check in the Navigation Check and make sure that no difference is found.
          DISPLAY ITEM & MEANING

          Display Item Meaning
          Disp MENU/*1 Pressing this switch activates the "Display Check".
          Fig 13: Locating Color Bar Display check
          G02934013Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Display Touch Switch Check
        1. Start the Diagnosis system.
        2. Select "MENU".
        3. Select "Display Check".
        4. Select "Touch Switch Check".
        5. Touch the screen and make sure that every line reacts to the touch.
          NOTE: After the Touch Switch Check for vertical lines, press "Next" to check horizontal lines.
          DISPLAY ITEM MEANING

          Display Item Meaning
          Disp MENU/*1 Pressing this switch activates the "Display Check".
          Fig 14: Locating Touch SW Check Mode Display Vertical/Horizontal
          G02934014Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Display Touch Point Check
        1. Start the Diagnosis system.
        2. Select "MENU".
        3. Select "Display Check".
        4. Select "Touch Point Check".
        5. The position detected by the pressure sensing touch switch is checked.
          DISPLAY ITEM MEANING

          Display Item Meaning
          Press point/*1 The detected point is indicated by a cross-hair cursor.
          Disp MENU/*2 Pressing this switch activates "Display Check".
          Fig 15: Locating Touch Point Check Display
          G02934015Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      5. Panel Switch Check Mode
        1. Start the Diagnosis system.
        2. Select "MENU".
        3. Select "Display Check".
        4. Select "Panel Switch Check".
        5. Press each switch and make sure that it corresponds to the display on the screen.
          DISPLAY DATA DESCRIPTION

          Display Data Description
          Names of push-button switches/*1 Pressing 2 or more push-button switches is displayed as "MULTIPLE". After that if the number of push-button switches being pressed becomes 1, the name of the push-button switch being pressed is displayed.
          Names of push-button switches/*1 Names of push-button switches pressed are displayed. Pressing 2 or more push-button switches is displayed as "MULTIPLE". After that if the number of push-button switches being pressed becomes 1, the name of the push-button switch being pressed is displayed.
          Disp MENU/*2 Pressing this switch activates "Display Check".
          Names of rotary switches/*3 Names of rotary switches are displayed when being rotated.
          Direction of rotary switches/*4 Direction of rotary switches are displayed when being rotated.
          Fig 16: Locating Panel Switch Check Mode Display
          G02934016Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      6. Vehicle Signal Check Mode
        1. Start the Diagnosis system.
        2. Select "MENU".
        3. Select "Display Check".
        4. Select "Vehicle Signal Check".
        5. Check the status of the vehicle signal (PKB, REV, SPEED, TAIL) loaded into the display.
          NOTE: Vehicle signal data is updated every 1 second.
          DISPLAY ITEM & MEANING

          Display Item Meaning
          PKB IG (Signal State) is displayed by ON/OFF. (IG switch ON)
          REV REV (Signal State) is displayed by ON/OFF. (IG switch ON)
          SPEED SPEED is displayed by calculating the vehicle speed from the pulse signal.
          TAIL TAIL (Signal State) is displayed by ON/OFF.
          Fig 17: Locating Vehicle Check Mode Display
          G02934017Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. NAVIGATION CHECK 
      Fig 18: Identifying Navigation Check Procedure
      G02934018Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Navigation Check
      1. Start the diagnosis system.
      2. Select "MENU".
      3. Select "Navigation Check".
        DISPLAY DESCRIPTION

        Display Description
        GPS Information/*1 Information related to GPS is displayed (updated every 1 second.).
        Vehicle Sensors/*2 Vehicle signal information to be loaded in the Navigation ECU is displayed (updated every 1 second.).
        Color Bar Check/*3 Color display of the Navigation ECU is checked. (Compare with the Color Bar Check results in the Display Check.)
        Memory Copy / Paste/*4 This function is not available.
        Parts Information/*5 Navigation program version and disc version are displayed.
        Menu/*6 Pressing this switch returns to the "Diagnosis MENU".
        Fig 19: Locating Navigation Check Display
        G02934019Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE:
        • In the Navigation Check mode, the checks mentioned above can be conducted.
        • The Navigation ECU operates each Navigation Check screen.
    7. GPS Information
      1. Start the Diagnosis system.
      2. Select "Menu".
      3. Select "Navigation Check".
      4. Select "GPS Information".
      5. Check the GPS-related information.
        DISPLAY DATA DESCRIPTION

        Display Data Description
        Satellite Information/*1 "Angle of elevation", "Azimuth", "Level of Signal" and "Status of Wave Reception" of the Satellite captured by the antenna are displayed (for 8 satellites max.)
        Level of Signal/*2 As the level of signal is higher, the receiving sensitivity becomes better.
        Position Data/*3 The latitude and longitude of the current position are displayed in degree, minute and second.
        Time Data/*4 Date and time data obtained from the GPS receiver is displayed.
        Menu/*5 Pressing this switch returns to the "Navigation Check".
        Fig 20: Locating GPS Information Display
        G02934020Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Status of Wave Reception: /*6 

      DISPLAY CONDITIONS

      Display Conditions
      - Complement no GPS
      T Complement GPS but no using
      P Using GPS

      Measurement Status: /*7 

      DISPLAY CONDITIONS

      Display Conditions
      2D Measurement on 2 dimensions
      3D Measurement on 3 dimensions
      NG GPS information cannot be used
      Error Reception error occurs
      - Other than the above
    8. Vehicle Sensors
      1. Start the Diagnosis system.
      2. Select "MENU".
      3. Select "Navigation Check".
      4. Select "Vehicle sensors".
      5. Check the vehicle signals (ACC, REV, SPD) and the output signal of the gyro sensor introduced into the navigation ECU.
        Fig 21: Locating Vehicle Signal Check Display
        G02934021Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        DISPLAY METHOD

        Items Display Method
        ACC signal status Displayed as ON/OFF.
        REV signal status Displayed as ON/OFF.
        SPD signal status The cumulative value of input pulse count and the vehicle speed [km/h] [mph] are displayed. [The cumulative value of input pulse count is set to be 0 when this screen is displayed. When the vehicle starts to drive, it is counted and displayed continually.]
        Output signal of the gyro sensor Voltage [V] and relative azimuthal angle [degree] are displayed. [The position of the vehicle when this screen is displayed is set to be 0 degree in azimuth. Based on this, relative azimuthal angle is measured and displayed continually.]
        Navi Menu/*1 Pressing this switch returns to the "Navigation Check".
    9. Navigation Color Bar Check
      1. Start the Diagnosis system.
      2. Select "MENU".
      3. Select "Navigation Check".
      4. Select "Color Bar Check".
      5. Make sure that the set color matches the display color.
      6. Compare with the Color Bar Check in the Display Check and make sure that no difference is found.
        DISPLAY ITEM MEANING

        Display Item Meaning
        Navi Menu/*1 Pressing this switch activates the "Navigation Check".
        Fig 22: Locating Navi Color Bar Check
        G02934022Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    10. Parts Information
      1. Start the Diagnosis system.
      2. Select "MENU".
      3. Select "Navigation Check".
      4. Select "Parts Information".
      5. Check the program and disc version.
        DISPLAY ITEM MEANING

        Display Item Meaning
        Navi Menu/*1 Pressing this switch returns to the "Navigation Check".
        Fig 23: Locating Parts Information Display
        G02934023Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    11. Memory Copy/ Paste
      NOTE: This function is not available.
      DISPLAY ITEM MEANING

      Display Item Meaning
      Navi Menu/*1 Pressing this switch returns to the "Navigation Check".
      Fig 24: Locating Memory Copy/Paste Table
      G02934024Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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