Diagnosis System

1. For rear view monitor system diagnosis, signals received by the parking assist ECU can be checked and the rear view monitor system can be calibrated, adjusted and checked using the display and navigation module display*1 or accessory meter assembly*2.
   • *1: w/ Navigation System
   • *2: w/o Navigation System
   NOTE:

   Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as the rear view monitor system may be needed. Refer to INITIALIZATION .

   HINT: 

   The displayed screens and items may differ depending on vehicle specifications.

1. w/o Multi-terrain Monitor
   Fig 1: Identifying Diagnosis Screen Flow Diagram (w/o Multi-Terrain Monitor)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. w/ Multi-terrain Monitor
   Fig 2: Identifying Diagnosis Screen Flow Diagram (w/ Multi-Terrain Monitor)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Start the engine.
2. Turn on the display and navigation module display*1 or accessory meter*2.
   • *1: w/ Navigation System
   • *2: w/o Navigation System
3. Retract the outer rear view mirrors.
4. Operate the light control switch within 10 seconds:

   Off → Turn on → Turn off → Turn on → Turn off → Turn on → Turn off.

HINT: 

There are 2 methods to finish diagnostic mode. Finish the mode by using either of them.

1. Method 1
   1. Turn the engine switch off.
2. Method 2
   1. Press the DISP switch*1 or MODE switch*2 of the display and navigation module display*1 or accessory meter assembly*2.
      • *1: w/ Navigation System
      • *2: w/o Navigation System

1. Start diagnostic mode.
2. SIGNAL CHECK
   Fig 3: Identifying Signal Check Screen

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. On the SIGNAL CHECK screen, it is possible to inspect the state of signals sent to the parking assist ECU and check the settings.

      Item	Inspection Detail	Note
      SPEED	Speed signal input	When "CHK" (red) is displayed, selecting "NEXT" will not change the display to the next screen.
      CAMERA SW	Steering pad switch assembly (wide view front and side monitor switch) signal input
      BCTY	State of CAN communication with main body ECU (multiplex network body ECU)
      MIRROR SW	Outer rear view mirror retract signal input
      SHIFT	Shift signal input
      STR SIG	Steering angle sensor signal input
      HANDLE	Steering wheel position signal input
      BODY	Body size signal
      DEST	Destination information signal input
      MTM	Multi-terrain monitor judgment signal
      T/M	Transmission judgment signal

      HINT: 

      • When "CHK" (red) is displayed, perform inspections based on the result of the following inspections.
      • If performing the adjustment after proceeding to the next screen, confirm that all items display "OK" (blue) before selecting "NEXT".
      1. SPEED inspection

         HINT: 

         If "CHK" (red) is displayed for "SPEED", check for DTCs and perform troubleshooting based on the output DTCs. Refer to DTC CHECK / CLEAR .

      2. CAMERA SW inspection
         1. Check that "OK" (blue) is displayed for "CAMERA SW" and select "OK".
         2. Check that "OK" (blue) changes to "CHK" (red). Press the wide view front and side monitor switch (steering pad switch assembly) and check that "CHK" (red) returns to "OK" (blue).

            HINT: 

            If "CHK" (red) remains displayed or the "CAMERA SW" inspection result is not normal, perform troubleshooting according to Problem Symptoms Table ("CHK" message(s) are displayed on the SIGNAL CHECK screen). Refer to "CHK" message(s) are displayed on the SIGNAL CHECK screen. .

      3. BCTY inspection

         HINT: 

         If "CHK" (red) is displayed for "BCTY", check for DTCs and perform troubleshooting based on the output DTCs. Refer to DTC CHECK / CLEAR .

      4. MIRROR SW inspection

         HINT: 

         If "CHK" (red) is displayed for "MIRROR SW", check for DTCs and perform troubleshooting based on the output DTCs. Refer to "CHK" message(s) are displayed on the SIGNAL CHECK screen. .

      5. SHIFT inspection

         HINT: 

         If "CHK" (red) is displayed for "SHIFT", check for DTCs and perform troubleshooting based on the output DTCs. Refer to DTC CHECK / CLEAR .

      6. STR SIG inspection

         HINT: 

         If "CHK" (red) is displayed for "STR SIG", check for DTCs and perform troubleshooting based on the output DTCs. Refer to DTC CHECK / CLEAR .

      7. HANDLE inspection

         HINT: 

         If "CHK" (red) is displayed for "HANDLE", check for DTCs and perform troubleshooting based on the output DTCs. Refer to DTC CHECK / CLEAR .

      8. BODY inspection

         HINT: 

         If "CHK" (red) is displayed for "BODY", check for DTCs and perform troubleshooting based on the output DTCs. Refer to DTC CHECK / CLEAR .

      9. DEST inspection

         HINT: 

         If "CHK" (red) is displayed for "DEST", check for DTCs and perform troubleshooting based on the output DTCs. Refer to DTC CHECK / CLEAR .

      10. MTM inspection

          HINT: 

          If "CHK" (red) is displayed for "MTM", check for DTCs and perform troubleshooting based on the output DTCs. Refer to DTC CHECK / CLEAR .

      11. T/M inspection

          HINT: 

          If "CHK" (red) is displayed for "T/M", check for DTCs and perform troubleshooting based on the output DTCs. Refer to DTC CHECK / CLEAR .

3. Finish diagnostic mode.