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Terminals Of Ecu

  1. TELEVISION CAMERA ASSEMBLY 
    Fig 1: Identifying Television Camera Assembly Terminals
    G04065407Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TELEVISION CAMERA ASSEMBLY TERMINALS RESISTANCE SPECIFICATION

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    CV- (T20-1) - CGND (T20-3) BR - W Display signal (-) Always Below 1 Ω
    CV+ (T20-2) - CGND (T20-3) R - W Display signal (+) Ignition switch ON, shift lever R position Signal waveform 1

    Waveform 1 
    CGND (T20-3) - Body ground W - Body ground Power ground Always Below 1 Ω
    CB+ (T20-4) - CGND (T20-3) B - W Power source Ignition switch ON, shift lever R position 6 V
    1. Reference:

      Oscilloscope waveform

      1. Waveform 1
    Waveform 1

    Item Content
    Measure terminal CV+ - CGND
    Measure set 0.2 V/DIV., 0.2 μsec./DIV
    Condition Ignition switch: ON, shift lever: R position
    Fig 2: Signal Waveform Graph
    G04065408Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. TELEVISION CAMERA ECU 
Fig 3: Identifying Television Camera ECU Terminals
G04065409Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
TELEVISION CAMERA ECU TERMINALS VOLTAGE AND RESISTANCE SPECIFICATION

Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
+B (T22-1) - GND1 (T22-8) L-Y - W-B Battery supply Always 10 to 14 V
Ignition (T22-2) - GND1 (T22-8) B-W - W-B Ignition signal input Ignition switch ON 10 to 14 V
ACC (T22-5) - GND1 (T22-8) GR - W-B ACC signal input Ignition switch ON or ACC 10 to 14 V
GND1 (T22-8) - Body ground W-B - Body ground Power ground Always Below 1 Ω
VG (T21-9) - GND1 (T22-8) Shielded - W-B Display signal output ground (Shielded) Always Below 1 Ω
R (T21-10) - GND1 (T22-8) Y - W-B Display signal output (Red) While displaying map or rear view monitor Signal waveform 2

Waveform 2 
G (T21-11) - GND1 (T22-8) W - W-B Display signal output (Green) While displaying map or rear view monitor Signal waveform 2

Waveform 2 
B (T21-12) - GND1 (T22-8) R - W-B Display signal output (Blue) While displaying map or rear view monitor Signal waveform 2
B1 (T21-13) - GND1 (T22-8) R - W-B Display signal input (Blue) While displaying map Signal waveform 2

Waveform 2 
G1 (T21-14) - GND1 (T22-8) W - W-B Display signal input (Green) While displaying map Signal waveform 2

Waveform 2 
R1 (T21-15) - GND1 (T22-8) Y - W-B Display signal input (Red) While displaying map Signal waveform 2

Waveform 2 
VG1 (T21-16) - GND1 (T22-8) Shielded - W-B Display signal input ground (Shielded) Always Below 1 Ω
CGND (T21-19) - GND1 (T22-8) W - W-B Television camera ground Always Below 1 Ω
CB+ (T21-20) - GND1 (T22-8) B - W-B Power source to television camera Ignition switch ON, shift lever R position 6 V
REV (T21-27) - GND1 (T21-6) R-B - W-B Reverse signal input Ignition switch ON, shift lever R position 10 to 14 V
TX+ (T21-29) P AVC-LAN control bus See "Service check mode" -
TX- (T21-30) L-B AVC-LAN control bus See "Service check mode" -
SYNC (T21-31) - GND1 (T22-8) G - W-B Synchronized signal output While displaying map or rear view monitor Signal waveform 3

Waveform 3 
VR (T22-32) - GND1 (T21-8) B - W-B Display signal output ground Always Below 1 Ω
VR1 (T21-33) - GND1 (T22-8) B - W-B Display signal input ground Always Below 1 Ω
SYN1 (T21-34) - GND1 (T221-8) G - W-B Synchronized signal input While displaying map Signal waveform 3

Waveform 3 
TX1- (T21-35) L-B AVC-LAN control bus See "Service check mode" -
TX1+ (T21-36) P AVC-LAN control bus See "Service check mode" -
CV- (T21-39) - GND1 (T22-8) Shielded - W-B Television camera ground (Shielded) Always Below 1 Ω
CV+ (T21-40) - GND1 (T22-8) R - W-B Display signal of television camera input Ignition switch ON, shift lever R position Signal waveform 1

Waveform 1 
  1. Reference:

    Oscilloscope waveform

    1. Waveform 1
      Waveform 1

      Item Content
      Measure terminal CV+ - GND1
      Measure set 0.2 V/DIV., 0.2 μsec./DIV
      Condition Ignition switch: ON, shift lever: R position
      Fig 4: Signal Waveform Graph (Waveform 1)
      G04065410Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Waveform 2
      Waveform 2

      Item Content
      Terminal R, G, B, R1, G1, B1, - GND1
      Measure set 200 mV/DIV., 10 μsec./DIV
      Condition Image is being displayed (Back guide monitor system or navigation system).
      Fig 5: Signal Waveform Graph (Waveform 2)
      G04065411Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Waveform 3
Waveform 3

Item Content
Terminal SYNC, SYN1 - GND1
Measure set 500 mV/DIV., 10 μsec./DIV
Condition Image is being displayed (Back guide monitor system or navigation system).
Fig 6: Signal Waveform Graph (Waveform 3)
G04065412Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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