PARKING ASSIST ECU
Disconnect the P45 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 |
|---|---|---|---|---|
| P45-1 (+B) - P45-4 (GND1) | L - W-B | Power source signal | Always | 11 to 14 V |
| P45-3 (GND1) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
| P45-3 (IG) - P45-4 (GND1) | G - W-B | IG power source signal | Engine switch on (IG) | 11 to 14 V |
| Engine switch off | Below 1 V | |||
| P45-2 (ACC) - P45-4 (GND1) | L - W-B | ACC power source signal | Engine switch on (ACC) | 11 to 14 V |
| Engine switch off | Below 1 V |
Reconnect the P45 parking assist ECU connector.
Measure the voltage, resistance and waveform according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| P46-29 (CV+) - P46-31 (SGND) | W - Shielded | Rear television camera assembly display signal input | Engine switch on (IG), No. 2 combination switch assembly (panoramic view monitor main switch) on, camera lens not covered, displaying image | Pulse generation (See waveform 1) |
| Engine switch on (IG), No. 2 combination switch assembly (panoramic view monitor main switch) on, camera lens covered, blacking out screen | Pulse generation (See waveform 2) | |||
| P46-33 (CB+) - P46-31 (SGND) | B - Shielded | Power source to rear television camera | Engine switch on (IG) | 5.5 to 7.05 V |
| P46-6 (RSW+) - P45-4 (GND1) | P - W-B | Terminal required by law | Panoramic image being displayed | 0 to 2 V |
| Panoramic image not being displayed | 5.5 to 7.05 V | |||
| P45-15 (BLSW) - Body ground | R - Body ground | No. 2 combination switch assembly (panoramic view monitor main switch) switch signal | Engine switch on (IG), No. 2 combination switch assembly (panoramic view monitor main switch) off | 5.5 to 6.5 V |
| Engine switch on (IG), No. 2 combination switch assembly (panoramic view monitor main switch) on | Below 1 V | |||
| P46-31 (SGND) - P45-4 (GND1) | Shielded - W-B | Rear television camera assembly ground (shield) | Always | Below 1 Ω |
| P46-30 (CV-) - P46-31 (SGND) | R - Shielded | Rear television camera assembly ground | Always | Below 1 Ω |
| P46-34 (LCV-) - P46-11 (SGND) | W - Shielded | Side television camera assembly LH ground | Always | Below 1 Ω |
| P46-10 (LCV+) - P46-17 (LGND) | R - Shielded | Side television camera assembly LH display signal input | Engine switch on (IG), No. 2 combination switch assembly (panoramic view monitor main switch) on, camera lens not covered, displaying image | Pulse generation (See waveform 1) |
| Engine switch on (IG), No. 2 combination switch assembly (panoramic view monitor main switch) on, camera lens covered, blacking out screen | Pulse generation (See waveform 2) | |||
| P46-11 (SGND) - P45-4 (GND1) | Shielded - W-B | Side television camera assembly LH ground (shield) | Always | Below 1 Ω |
| P46-12 (LCB+) - P46-11 (SGND) | B - Shielded | Power source to side television camera assembly LH | Engine switch on (IG) | 5.5 to 7.05 V |
| P46-13 (BCV-) - P46-14 (SGND) | W - Shielded | Front television camera assembly ground | Always | Below 1 Ω |
| P46-36 (BCV+) - P46-14 (SGND) | R - Shielded | Front television camera assembly display signal input | Waveform 1: Engine switch on (IG), No. 2 combination switch assembly (panoramic view monitor main switch) on, camera lens not covered, displaying image | Pulse generation (See waveform 1) |
| Waveform 2: Engine switch on (IG), No. 2 combination switch assembly (panoramic view monitor main switch) on, camera lens covered, blacking out screen | Pulse generation (See waveform 2) | |||
| P46-14 (SGND) - P45-4 (GND1) | Shielded - W-B | Front television camera assembly ground (shield) | Always | Below 1 Ω |
| P46-15 (BCB+) - P46-14 (SGND) | B - Shielded | Power source to front television camera | Engine switch on (IG) | 5.5 to 7.05 V |
| P46-16 (RCV-) - P46-39 (SGND) | W - Shielded | Side television camera assembly RH ground | Always | Below 1 Ω |
| P46-38 (RCV+) - P46-39 (SGND) | R - Shielded | Side television camera assembly RH display signal input | Waveform 1: Engine switch on (IG), No. 2 combination switch assembly (panoramic view monitor main switch) on, camera lens not covered, displaying image | Pulse generation (See waveform 1) |
| Waveform 2: Engine switch on (IG), No. 2 combination switch assembly (panoramic view monitor main switch) on, camera lens covered, blacking out screen | Pulse generation (See waveform 2) | |||
| P46-39 (SGND) - P45-4 (GND1) | Shielded - W-B | Side television camera assembly RH ground (shield) | Always | Below 1 Ω |
| P46-40 (RCB+) - P46-39 (SGND) | B - Shielded | Power source to side television camera assembly RH | Engine switch on (IG) | 5.5 to 7.05 V |
Using an oscilloscope, check the waveform.
| *a | Waveform 1 | *b | Waveform 2 |
| *c | Synchronization Signal | *d | Video Waveform |
Waveform 1
| Item | Content |
|---|---|
| Terminal No. (Symbol) |
|
| Tool Setting | 200 mV/DIV., 50 μsec./DIV. |
| Condition |
|
Tech Tips
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 RECEIVER ASSEMBLY (w/ Audio and Visual System [for 10.3 Inch Display])
RADIO RECEIVER ASSEMBLY (w/ Navigation System)