Rear View Monitor System (For Navigation Receiver Type) Terminals Of Ecu

Audio Visual Telematics. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
Park Assist Monitoring. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

  1. CHECK NAVIGATION RECEIVER ASSEMBLY

Rear View Monitor System (For Navigation Receiver Type) -- Terminals Of Ecu



CHECK NAVIGATION RECEIVER ASSEMBLY

Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Park Assist Monitoring.Rear View Monitor System (For Radio And Display Type).Rear View Monitor System (For Navigation Receiver Type) Terminals Of Ecu

  1. Disconnect the G105 navigation receiver assembly connector.

  2. Measure the voltage and resistance according to the value(s) in the table below.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specification
    G105-3 (ACC) - G105-7 (GND)
    		GR - BR
    		Accessory (ON)
    		Ignition switch off
    		Below 1 V
    Ignition switch ACC
    		11 to 14 V
    G105-4 (B) - G105-7 (GND)
    		L-Y - BR
    		Battery
    		Always
    		11 to 14 V
    G105-7 (GND) - Body ground
    		BR - Body ground
    		Ground
    		Always
    		Below 1 Ω
    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the G105 navigation receiver assembly connector.

  4. Measure the voltage and waveform according to the value(s) in the table below.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specification
    G152-2 (REV) - G105-7 (GND)
    		R-Y - BR
    		Reverse signal
    		Ignition switch ON, shift lever in R
    		7.5 to 14 V
    Ignition switch ON, shift lever not in R
    		Below 1 V
    G153-7 (CA+) - G153-15 (CGND)
    		B - Shielded
    		Power source
    		Ignition switch ON, shift lever in R
    		5.5 to 7.05 V
    G153-8 (V+) - G153-16 (V-)
    		W - R
    		Display signal
    		Ignition switch ON, shift lever in R
    		Pulse generation (See waveform 1)
    Ignition switch ON, shift lever in R, screen blacked out by covering camera lens
    		Pulse generation (See waveform 2)
    G153-15 (CGND) - Body ground
    		Shielded - Body ground
    		Shielding
    		Always
    		Below 1 V
    If the result is not as specified, the navigation receiver assembly may have a malfunction.


    5. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Park Assist Monitoring.Rear View Monitor System (For Radio And Display Type).Rear View Monitor System (For Navigation Receiver Type) Terminals Of Ecu

  5. Using an oscilloscope, check the waveform.

    1. Waveform 1

      Measurement Condition
      Item
      		Content
      Terminal No. (Symbol)
      		G153-8 (V+) - G153-16 (V-)
      Tool Setting
      		0.2 V/DIV., 50 μs/DIV.
      Condition
      		Ignition switch ON, shift lever in R
      HINT:
      The video waveform changes according to the image sent by the rear television camera assembly.

    2. Waveform 2

      Measurement Condition
      Item
      		Content
      Terminal No. (Symbol)
      		G153-8 (V+) - G153-16 (V-)
      Tool Setting
      		0.2 V/DIV., 50 μs/DIV.
      Condition
      		Ignition switch ON, shift lever in R, screen blacked out by covering camera lens
      HINT:
      The video waveform changes according to the image sent by the rear television camera assembly.
      Text in Illustration
      *a
      		Waveform 1
      *b
      		Waveform 2
      *c
      		Synchronized Signal
      *d
      		Video Waveform