Section 306 (LEXUS Navigation System - Diagnosis): Pre-Check

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.)

HINT:

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 a out of the parking area. In such cases the vehicle icon can be displayed off the real position of the vehicle.

HINT:

Before starting the Diagnosis System, make sure that the map appears on the screen after turning on the IG switch.

If not, some items cannot be checked.

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. While pressing the "INFO" switches on the Multi Display, turn the Light Control switch from OFF --> TAIL --> OFF --> TAIL --> OFF --> TAIL --> OFF.
   MULTI DISPLAY DESCRIPTION
   
   

   Display	Description
   Service 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 2: Identifying INFO Switches On Multi Display

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT:

   • When Diagnosis System starts, Service Check screen is displayed and the service check begins.
   • Select MENU to display Diagnosis Check Menu.

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.
   Fig 3: Identifying Touch Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Turn the ignition switch off to finish the mode.

1. Start the Diagnosis System.
   DIAGNOSIS SYSTEM FUNCTION
   
   

   Display Item	Function
   Components Name/*1	List of component names including optional components (15 components max.) are displayed. When the names are not identified, their physical addresses are displayed.
   Check/*2	Check results are displayed.
   Memory CLR/*3	Pressing this switch for 3 sec. deletes all the information about master component registration.
   Code CLR/*4	Pressing this switch for 3 sec. deletes diagnosis memory of all the components. It deletes Service Check results and the screen displaying the check results.
   Recheck/*5	Pressing this switch performs Service Check again.
   Menu/*6	Pressing this switch activates the Diagnosis Menu screen.
   LAN Mon/*7	Pressing this switch activates the LAN monitor screen.

   HINT:

   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 and the LAN Check information that will be displayed on the next screens.).

   Fig 5: Identifying System Check Mode

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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, whereas 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, whereas it responds to the Diagnosis System start-up.
   No Err	No DTC is identified.

   HINT:

   • After repair and check, press "Code CLR" for more than 3 sec. to delete diagnosis memory.
   • After deleting 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.
   UNIT CHECK MODE 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 Service 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.

   HINT:

   • Detecting Unit DTC activates the Unit Check Mode on the screen.
   • In the Unit Check Mode, DTC which is identified as "EXCH" in the Service Check, is displayed as classified into Current DTC and Past DTC.
     Fig 6: Identifying Unit Check Mode

     Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Start the Diagnosis System.
   DIAGNOSIS SYSTEM FUNCTION
   
   

   Display Item	Function
   Components Name/*1	List of component names including optional components (15 components max.) are displayed. When the names are not identified, their physical addresses are displayed.
   Check/*2	Check is displayed.
   Menu/*3	Pressing this switch activates the Diagnosis Menu screen.
   BACK/*4	Pressing this switch activates the System Check Mode screen.

   HINT:

   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.).

   Fig 7: Identifying LAN Monitor

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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, whereas 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, whereas it responds to the Diagnosis System start-up.
   No Err	No DTC is identified.

   HINT:

   • After repair and check, press "Code CLR" for more than 3 sec. to delete diagnosis memory.
   • After deleting diagnosis memory, press "Recheck" and make sure "OK" is displayed on the screen.
3. "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.
   LAN MONITOR 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 check mode screen switch/*7	Pressing this returns to the System Check Mode screen.

   HINT:

   Detecting no LAN DTC activates the LAN Check Mode on the screen.

   Fig 8: Identifying LAN Check Mode On Screen

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

• In the Navigation Check mode, the checks mentioned above can be conducted.
• The Navigation ECU operates each Navigation Check screen.

Fig 16: Display Navigation Check Mode On Screen

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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.)
   Position Data/*2	The latitude and longitude of the current position are displayed in degree, minute and second.
   Time Data/*3	Date and time data obtained from the GPS receiver is displayed.
   Navi Menu	Pressing this switch activates the "Navigation Check".

   Measurement Status: /*4 

   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

   Fig 17: Display GPS Information On Screen

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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.
   ITEMS 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	Pressing this switch activates the "Navigation Check".

   Fig 18: Display Vehicle Sensor On Screen

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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	Pressing this switch activates the "Navigation Check".

   Fig 19: Display Navigation Color Bar Check On Screen

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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	Pressing this switch activates the "Navigation Check".

   Fig 20: Display Parts Information On Screen

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

This function is not available.

Fig 21: Display Memory Copy/Paste On Screen

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002