TERMINALS OF ECU TELEVISION CAMERA ASSEMBLY (a) Disconnect the P19 television camera assembly connector.
 (b) 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 | |
P19-6 (CB+) - Body ground |
R - 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.
(c) Reconnect the P19 television camera assembly connector. (d) Check for pulses between each terminal of the connector. |
Terminal No. (Symbol) | Wiring Color |
Terminal Description | Condition |
Specified Condition | |
P19-3 (CV+) - P19-2 (CV-) |
B - W | 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) | |
P19-5 (CGND) - Body ground |
G - Body ground | Camera ground |
Always | Below 1 V |
HINT: A
waterproof connector is used for the 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 television camera assembly may be malfunctioning.
(e) Reference (Oscilloscope waveform):
|
*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 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 |
P19-3 (CV+) - P19-2 (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 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 |
P19-3 (CV+) - P19-2 (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 television camera assembly.
- The video waveform is constantly output when the engine switch is on (ACC).
RADIO AND DISPLAY RECEIVER ASSEMBLY
 |
Terminal No. (Symbol) | Wiring Color |
Terminal Description | Condition |
Specified Condition | |
G2-26 (CSLD) - Body ground |
Shield - Body ground |
Shield ground | Always |
Below 1 V | |
G2-27 (CGND) - Body ground |
G - Body ground | Camera ground |
Always | Below 1 V | |
G2-28 (V+) - G3-1 (GND1) |
B - BR | 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) | |
G2-29 (V-) - G3-1 (GND1) |
W - BR | Ground |
Always | Below 1 V | |
G2-30 (CA+) - G3-1 (GND1) |
R - BR | Television camera assembly power supply |
Engine switch on (ACC) |
5.5 to 7.05 V | (a) Reference (Oscilloscope waveform):
(1) Waveform 1 (camera lens not covered, displaying an image) |
Item | Content | |
Measurement terminal |
G2-28 (V+) - G3-1 (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 television camera assembly.
- The video waveform is constantly output when the engine switch is on (ACC).
|
*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 |
G2-28 (V+) - G3-1 (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 television camera assembly.
- The video waveform is constantly output when the engine switch is on (ACC).
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