Terminals Of Ecu [08/2021 - 09/2022]

1. Disconnect the T1 rear television camera assembly connector.
   Fig 1: Rear Television Camera Assembly Terminals Of ECU [08/2021 - 09/2022]

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage on the wire harness side connector according to the value(s) in the table below.

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   T1-6 (CB+) - Body ground	GR - Body ground	Power source	Engine switch on (ACC)	5.5 to 7.05 V

   If the result is not as specified, there may be a malfunction on the wire harness side.

3. Reconnect the T1 rear television camera assembly connector.
4. Check for pulses between each terminal of the connector.

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   T1-3 (CV+) - T1-2 (CV-)	B - G	Video signal	Engine switch on (IG) Shift lever in R Camera lens not covered, displaying image	Pulse generation (Refer to waveform 1)
   			Engine switch on (IG) Shift lever in R Camera lens covered, blacking out screen	Pulse generation (Refer to waveform 2)
   T1-5 (CGND) - Body ground	BR - Body ground	Camera ground	Always	Below 1 V

   HINT: 

   A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the multi-display assembly with the connector connected.

   If the result is not as specified, the rear television camera assembly may be malfunctioning.

5. Reference (Oscilloscope waveform):
   Fig 2: Waveform 1 & Waveform 2 [08/2021 - 09/2022]

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Waveform 1 (camera lens is not covered, displaying an image)
   *b	Waveform 2 (camera lens is covered, blacking out the screen)
   *c	Synchronization Signal
   *d	Video Waveform

   HINT: 

   A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the multi-display assembly with the connector connected.

   1. Waveform 1 (camera lens is not covered, displaying an image)

      Item	Content
      Measurement terminal	T1-3 (CV+) - T1-2 (CV-)
      Measurement setting	200 mV/DIV., 50 μs./DIV.
      Condition	Engine switch on (IG), shift lever in R

      HINT: 

      • The video waveform changes according to the image sent by the rear television camera assembly.
      • The video waveform is constantly output when the engine switch is on (ACC).
   2. Waveform 2 (camera lens is covered, blacking out the screen)

      Item	Content
      Measurement terminal	T1-3 (CV+) - T1-2 (CV-)
      Measurement setting	200 mV/DIV., 50 μs./DIV.
      Condition	Engine switch on (IG), shift lever in R

      HINT: 

      • The video waveform changes according to the image sent by the rear television camera assembly.
      • The video waveform is constantly output when the engine switch is on (ACC).

Fig 3: Multi-Display Assembly Terminals Of ECU [08/2021 - 09/2022]

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. *: w/ Parking Support Alert System

1. Reference (Oscilloscope waveform):
   1. Waveform 1 (camera lens not covered, displaying an image)

      Item	Content
      Measurement terminal	G22-8 (V+) - G22-13 (GND1)
      Measurement setting	200 mV/DIV., 50 μs/DIV.
      Condition	Engine switch on (IG), shift lever in R

      HINT: 

      • The video waveform changes according to the image sent by the rear television camera assembly.
      • The video waveform is constantly output when the engine switch is on (ACC).
      Fig 4: Waveform 1 (Camera Lens Is Not Covered, Displaying An Image) & Waveform 2 (Camera Lens Is Covered, Blacking Out The Screen) [08/2021 - 09/2022]

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      *a	Waveform 1 (camera lens is not covered, displaying an image)
      *b	Waveform 2 (camera lens is covered, blacking out the screen)
      *c	Synchronization Signal
      *d	Video Waveform

   2. Waveform 2 (camera lens covered, blacking out the screen)

      Item	Content
      Measurement terminal	G22-8 (V+) - G22-13 (GND1)
      Measurement setting	200 mV/DIV., 50 μs/DIV.
      Condition	Engine switch on (IG), shift lever in R

      HINT: 

      • The video waveform changes according to the image sent by the rear television camera assembly.
      • The video waveform is constantly output when the engine switch is on (ACC).

Refer to TERMINALS OF ECU [08/2021 - 09/2022]