Terminals Of Ecu [10/2022 - ]

1. Disconnect the W16 rear television camera assembly connector.
   Fig 1: Rear Television Camera Assembly [10/2022 - ]

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage of each terminal of the wire harness side connector.

   Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
   W16-6 (CB+) - Body ground	Power source	Ignition switch 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 W16 rear television camera assembly connector.
4. Measure the voltage and check for pulses at each terminal of the connector.

   Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
   W16-3 (CV+) - W16-2 (CV-)	Video signal	Ignition switch ON Reverse (R) selected Camera lens not covered, displaying an image	Pulse generation (Refer to waveform 1)
   		Ignition switch ON Reverse (R) selected Camera lens covered, blacking out the screen	Pulse generation (Refer to waveform 2)
   W16-5 (CGND) - Body ground	Shield ground	Always	Below 1 V

   HINT: 

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

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

5. Reference (Oscilloscope waveform):

   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 radio and display receiver assembly with the connector connected.

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

      Item	Content
      Measurement terminal	W16-3 (CV+) - W16-2 (CV-)
      Measurement setting	200 mV/DIV., 50 μs./DIV.
      Condition	Ignition switch ON, reverse (R) selected

      HINT: 

      • The video waveform changes according to the image sent by the rear television camera assembly.
      • The video waveform is constantly output when the ignition switch is ACC.
      • Make sure that the rear camera is enabled in general settings.
   2. Waveform 2 (camera lens is covered, blacking out the screen)

      Item	Content
      Measurement terminal	W16-3 (CV+) - W16-2 (CV-)
      Measurement setting	200 mV/DIV., 50 μs./DIV.
      Condition	Ignition switch ON, reverse (R) selected

      HINT: 

      • The video waveform changes according to the image sent by the rear television camera assembly.
      • The video waveform is constantly output when the ignition switch is ACC.
      • Make sure that the rear camera is enabled in general settings.

Refer to TERMINALS OF ECU [10/2022 - ]