TERMINALS OF ECU
1. REAR TELEVISION CAMERA ASSEMBLY
(a) Disconnect the Y2 rear television camera assembly connector.
(b) Measure the voltage according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
Y2-6 (CB+) - Y2-5 (CGND) |
R - BR |
Power source |
Within 60 seconds of turning the ignition switch to ACC |
5.5 to 7.05 V |
(c) Reconnect the Y2 rear television camera assembly connector.
(d) Measure the voltage and check for pulses between each terminal of the connector.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
Y2-2 (CV-) - Y2-3 (CV+) |
B - W |
Video signal |
Ignition switch ON Shift lever in R Camera lens not covered, displaying an image |
Pulse generation (See waveform 1) |
Ignition switch ON Shift lever in R Camera lens covered, blacking out screen |
Pulse generation (See waveform 2) |
|||
Y2-5 (CGND) - Body ground |
BR - Body ground |
Ground |
Always |
Below 1 V |
HINT:
(e) Reference (Oscilloscope waveform):
HINT:
A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the rear television camera assembly with the connector connected.
(1) Waveform 1 (camera lens is not covered, displaying an image)
Item |
Content |
---|---|
Terminal No. (Symbol) |
Y2-2 (CV-) - Y2-3 (CV+) |
Tool Setting |
200 mV/DIV., 50 μsec./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 (camera lens is covered, blacking out the screen)
Item |
Content |
---|---|
Terminal No. (Symbol) |
Y2-2 (CV-) - Y2-3 (CV+) |
Tool Setting |
200 mV/DIV., 50 μsec./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.
Text in Illustration
*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. RADIO AND DISPLAY RECEIVER ASSEMBLY (See page
)
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