PARKING ASSIST ECU
Disconnect the F103 and F104 parking assist ECU connectors.
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 off (ACC) | 11 to 14 V |
| F104-7 (BLSW) - F103-4 (GND1) | BR - W-B | Side monitor main switch power source signal | Engine switch on (IG), side monitor main switch on | 11 to 14 V |
Reconnect the F103 and F104 parking assist ECU connectors.
Measure the voltage according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| F104-39 (CANL) - F103-4 (GND1) | L - W-B | CAN communication signal | CAN communication circuit | Pulse generation |
| F104-40 (CANH) - F103-4 (GND1) | Y - W-B | CAN communication signal | CAN communication circuit | Pulse generation |
| F103-10 (TX-) | L | AVC-LAN communication signal | - | - |
| F103-11 (TX+) | P | AVC-LAN communication signal | - | - |
| F104-34 (SCV-) - F104-33 (SGND) | W - Shielded | Side television camera ground | Always | Below 1 V |
| F104-10 (SCV+) - F104-33 (SGND) | R - Shielded | Side television camera display signal input | Engine switch on (IG), side monitor main switch on | Pulse generation (See waveform 1) |
| F104-33 (SGND) - F103-4 (GND1) | Shielded - W-B | Side television camera ground (shield) | Always | Below 1 V |
| F104-32 (SCB+) - F104-33 (SGND) | B - Shielded | Power source to side television camera | Engine switch on (IG), side monitor main switch on | 5.5 to 7.05 V |
| *1 | Waveform A (under normal conditions) |
| *2 | Waveform B (camera lens is covered, blacking out the screen) |
| *3 | Synchronized Signal |
| *4 | Video Waveform |
Reference (Oscilloscope waveform):
Tech Tips
The video waveform changes according to the image sent by the side television camera assembly.
Waveform 1
| Item | Content |
|---|---|
| Terminal No. (Symbol) | F104-10 (SCV+) - F104-33 (SGND) |
| Tool Setting | 200 mV/DIV., 50 μsec./DIV. |
| Condition |
|
SIDE TELEVISION CAMERA ASSEMBLY
Disconnect the side television camera assembly connector.
Measure the voltage according to the value(s) in the table below.
| Terminal No. (Symbol) | Terminal Description | Condition | Specified Condition |
|---|---|---|---|
| 4 - Body ground | Ground | Always | Below 1 V |
| 1 - 4 | Power source | Engine switch on (IG), side monitor main switch on | 5.5 to 7.05 V |
Reconnect the side television camera assembly connector.
Tech Tips
A waterproof connector is used for the front television camera assembly. Therefore, inspect the waveform at the parking assist ECU with the connector connected.
Measure the voltage according to the value(s) in the table below.
| Terminal No. (Symbol) | Terminal Description | Condition | Specified Condition |
|---|---|---|---|
| 3 - 4 | Display signal | Engine switch on (IG), side monitor main switch on | Pulse generation (See waveform 1) |
| 4 - 6 | Side television camera ground | Always | Below 1 V |
| *1 | Waveform A (under normal conditions) |
| *2 | Waveform B (camera lens is covered, blacking out the screen) |
| *3 | Synchronized Signal |
| *4 | Video Waveform |
Reference (Oscilloscope waveform):
Tech Tips
The video waveform changes according to the image sent by the side television camera assembly.
Waveform 1
| Item | Content |
|---|---|
| Terminal No. (Symbol) | 3 - 4 |
| Tool Setting | 200 mV/DIV., 50 μsec./DIV. |
| Condition |
|
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