PARKING ASSIST ECU
Disconnect the F103 parking assist ECU connector.
Measure the voltage and resistance according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| F103-1 (+B) - F103-4 (GND1) | R - W-B | Power source signal | Always | 11 to 14 V |
| F103-4 (GND1) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
| F103-8 (IG) - F103-4 (GND1) | W - W-B | IG power source signal | Engine switch on (IG) | 11 to 14 V |
| F103-9 (ACC) - F103-4 (GND1) | GR - W-B | ACC power source signal | Engine switch on (ACC) | 11 to 14 V |
Reconnect the F103 parking assist ECU connector.
Measure the voltage according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| F103-10 (TX-) | L | AVC-LAN communication signal | - | - |
| F103-11 (TX+) | P | AVC-LAN communication signal | - | - |
| F104-38 (CV-) - F104-37 (CGND) | W - Shielded | Rear television camera ground | Always | Below 1 V |
| F104-15 (CV+) - F104-37 (CGND) | R - Shielded | Rear television camera display signal (NTSC) input | Engine switch on (IG), shift lever in R | Pulse generation (See waveform 1) |
| F104-37 (CGND) - F103-4 (GND1) | Shielded - W-B | Rear television camera ground (shield) | Always | Below 1 V |
| F104-14 (CB+) - F104-37 (CGND) | B - Shielded | Power source to rear television camera | Engine switch on (IG), shift lever in R | 5.8 to 7.0 V |
| *a | Waveform A (camera lens not covered, displaying an image) |
| *b | Waveform B (camera lens covered, blacking out the screen) |
| *c | Synchronized Signal |
| *d | Video Waveform |
Reference (Oscilloscope waveform):
Tech Tips
The video waveform changes according to the image sent by the rear television camera assembly.
Waveform 1
| Item | Content |
|---|---|
| Terminal No. (Symbol) | F104-15 (CV+) - F104-37 (CGND) |
| Tool Setting | 200 mV/DIV., 50 μsec./DIV. |
| Condition |
|
REAR TELEVISION CAMERA ASSEMBLY
Disconnect the Y14 rear television camera assembly connector.
Measure the voltage and resistance according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| Y14-4 (CB+) - Body ground | B - Body ground | Power source | Engine switch on (IG), shift lever in R | 5.8 to 7.0 V |
Reconnect the Y14 rear television camera assembly connector.
Tech Tips
A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the parking assist ECU y with the connector connected. If the result is not as specified, the rear television camera assembly may have a malfunction.
Measure the voltage according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| Y14-2 (CV+) - Body ground | R - Body ground | Display signal | Engine switch on (IG), shift lever in R | Pulse generation (See waveform 1) |
| Y14-1 (CV-) - Body ground | W - Body ground | Rear television camera ground | Always | Below 1 V |
| *a | Waveform A (camera lens not covered, displaying an image) |
| *b | Waveform B (camera lens covered, blacking out the screen) |
| *c | Synchronized Signal |
| *d | Video Waveform |
Reference (Oscilloscope waveform):
Tech Tips
The video waveform changes according to the image sent by the rear television camera assembly.
Waveform 1
| Item | Content |
|---|---|
| Terminal No. (Symbol) | Y14-2 (CV+) - Body ground |
| Tool Setting | 200 mV/DIV., 50 μsec./DIV. |
| Condition |
|
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