Service Check Mode

HINT:

Service Check Mode is operated as follows.

Fig 1: Identifying Service Check Mode Flow Chart

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Service Check Mode
   1. Start the Diagnosis System.
      DIAGNOSIS SYSTEM START
      
      

      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 Result/*2	Check results are displayed.
      Memory Clear switch/*3	Pressing this switch for 3 sec. deletes all the information about master component registration.
      DTC Clear switch/*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.

      Fig 2: Identifying Service Check Mode

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      Service 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.).

   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.

      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 "LAN Check Mode" and "Unit Check Mode" for detail information. Check troubled parts of the components in these modes by referring to the DTC code list.
      Fig 3: Identifying LAN Check Mode

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   LAN CHECK MODE 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.
   DTC clear switch/*7	Pressing this switch for 3 sec. deletes DTC memory of the selected diagnosis component.
   Service check mode screen switch/*8	Pressing this returns to the Service Check Mode screen.
   Unit check mode screen switch/*9	Pressing this switch activates the Unit Check Mode screen, which displays the logical address 01 with DTC 00-CF and the logical address 10 and up with DTC 00-FE.
   Date/Time/*10	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.)
   Unit check mode screen switch/*11	Pressing this switch activates the LAN Check Mode screen, which displays the logical address 01 with DTC 00-D0-FE.
   Current/*12	Up to 6 DTC codes detected during the System Check are displayed.
   Memory/*13	DTC memories stored and current DTC Notification are displayed.

   Fig 4: Identifying Unit Check Mode

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT:

   • Detecting Unit DTC activates the Unit Check Mode on the screen.
   • Detecting no LAN DTC activates the LAN Check Mode on the screen.
   • Use the displayed switch to change to the Unit Check Mode and the LAN Check Mode.
   • The LAN Check Mode chooses and displays the LAN DTC out of DTC of components identified as "CHEK" in the Service Check.
   • In the Unit Check Mode, DTC which is identified as "EHCK" in the Service Check, is displayed as classified into Current DTC and Past DTC.