PARKING ASSIST ECU
Disconnect the F54 connector from the ECU.
Measure the resistance and voltage of each terminal of the wire harness side connector.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| F54-1 (+B) - F54-3 (GND1) | R - W-B | Power source signal | Power switch off | 11 to 14 V |
| F54-3 (GND1) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
| F54-7 (IG) - F54-3 (GND1) | W - W-B | IG Power source signal | Power switch on (IG) | 11 to 14 V |
| F54-8 (ACC) - F54-3 (GND1) | GR - W-B | ACC Power source signal | Power switch off (ACC) | 11 to 14 V |
If the result is not as specified, there may be a malfunction on the wire harness side.
Reconnect the F54 connector to the ECU.
Measure the voltage and check for pulses according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| F54-21 (CANL) - F54-3 (GND1) | L - W-B | CAN communication signal | CAN communication circuit | Pulse generation |
| F54-22 (CANH) - F54-3 (GND1) | Y - W-B | CAN communication signal | CAN communication circuit | Pulse generation |
| F54-23 (BLSW) - F54-3 (GND1) | BR - W-B | Side monitor main switch signal | Power switch on (IG) Side monitor main switch pushed in |
Below 1 V |
| Power switch on (IG) Side monitor main switch not pushed in |
4.0 to 5.5 V | |||
| F54-24 (TX-) - F54-25 (TX+) | L - P | AVC-LAN communication signal | - | - |
| F55-15 (SCV-) - F54-3 (GND1) | W - W-B | Side television camera ground | Always | Below 1 V |
| F55-16 (SCV+) - F54-3 (GND1) | R - W-B | Side television camera display signal (NTSC) input | Power switch on (IG) Side monitor main switch on Under normal conditions |
Pulse generation (See waveform 1) |
| Power switch on (IG) Side monitor main switch on Camera lens is covered, blacking out the screen |
Pulse generation (See waveform 2) | |||
| F55-17 (SGND) - F54-3 (GND1) | Shield - W-B | Side television camera ground (shield) | Always | Below 1 V |
| F55-18 (SCB+) - F54-3 (GND1) | B - W-B | Power source to side television camera | Power switch on (IG) Shift lever in R |
5.8 to 7.0 V |
If the result is not as specified, the ECU may have a malfunction.
| *1 | Waveform 1 (under normal conditions) |
| *2 | Waveform 2 (camera lens is covered, blacking out the screen) |
| *3 | Synchronized Signal |
| *4 | Video Waveform |
Reference (Oscilloscope waveform):
Tech Tips
A waterproof connector is used for the side television camera assembly. Therefore, inspect the waveform at the parking assist ECU with the connector connected.
Waveform 1 (under normal conditions)
| Item | Content |
|---|---|
| Terminal No. (Symbol) | F55-16 (SCV+) - F54-3 (GND1) |
| Tool Setting | 200 mV/DIV., 50 μsec./DIV. |
| Condition | Power switch on (IG), shift lever in R |
Tech Tips
The video waveform changes according to the image sent by the side television camera assembly.
Waveform 2 (camera lens is covered, blacking out the screen)
| Item | Content |
|---|---|
| Terminal No. (Symbol) | F55-16 (SCV+) - F54-3 (GND1) |
| Tool Setting | 200 mV/DIV., 50 μsec./DIV. |
| Condition | Power switch on (IG), shift lever in R |
Tech Tips
The video waveform changes according to the image sent by the side television camera assembly.
SIDE TELEVISION CAMERA ASSEMBLY
Disconnect the connector from the side television camera assembly.
Measure the voltage of each terminal of the wire harness side connector.
| Terminal No. (Symbol) | Terminal Description | Condition | Specified Condition |
|---|---|---|---|
| 4 (SGND) - Body ground | Ground | Always | Below 1 V |
| 1 (SCB+) - 4 (SGND) | Power source | Power switch on (IG) Side monitor main switch on |
5.8 to 7.0 V |
If the result is not as specified, there may be a malfunction on the wire harness side.
Reconnect the connector to the side television camera assembly.
Check for pulses between each terminal of the connector.
| Terminal No. (Symbol) | Terminal Description | Condition | Specified Condition |
|---|---|---|---|
| 3 (SCV+) - 6 (SCV-) | Display signal | Power switch on (IG) Side monitor main switch on Under normal conditions |
Pulse generation (See waveform 1) |
| Power switch on (IG) Side monitor main switch on Camera lens covered, blacking out screen |
Pulse generation (See waveform 2) |
Tech Tips
A waterproof connector is used for the side television camera assembly. Therefore, inspect the waveform at the parking assist ECU with the connector connected.
If the result is not as specified, the camera may have a malfunction.
| *1 | Waveform 1 (under normal conditions) |
| *2 | Waveform 2 (camera lens is covered, blacking out the screen) |
| *3 | Synchronized Signal |
| *4 | Video Waveform |
Reference (Oscilloscope waveform):
Tech Tips
A waterproof connector is used for the side television camera assembly. Therefore, inspect the waveform at the parking assist ECU with the connector connected.
Waveform 1 (under normal conditions)
| Item | Content |
|---|---|
| Terminal No. (Symbol) | 3 (SCV+) - 6 (SCV-) |
| Tool Setting | 200 mV/DIV., 50 μsec./DIV. |
| Condition | Power switch on (IG), side monitor main switch on |
Tech Tips
The video waveform changes according to the image sent by the side television camera assembly.
Waveform 2 (camera lens is covered, blacking out the screen)
| Item | Content |
|---|---|
| Terminal No. (Symbol) | 3 (SCV+) - 6 (SCV-) |
| Tool Setting | 200 mV/DIV., 50 μsec./DIV. |
| Condition | Power switch on (IG), side monitor main switch on |
Tech Tips
The video waveform changes according to the image sent by the side television camera assembly.