PARKING ASSIST ECU
Disconnect the a2 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 |
|---|---|---|---|---|
| a2-2 (+B) - a2-3 (GND1) | SB - BR | Power source signal | Always | 11 to 14 V*1 10.5 to 16 V*2 |
| a2-3 (GND1) - Body ground | BR - Body ground | Ground | Always | Below 1 Ω |
| a2-6 (IG) - a2-3 (GND1) | G - BR | IG power source signal | Engine switch on (IG) | 11 to 14 V*1 10.5 to 16 V*2 |
| Engine switch off | Below 1 V | |||
| a2-1 (ACC) - a2-3 (GND1) | GR - BR | ACC power source signal | Engine switch on (ACC) | 11 to 14 V*1 10.5 to 16 V*2 |
| Engine switch off | Below 1 V |
*1: w/o Stop and Start System
*2: w/ Stop and Start System
Reconnect the a2 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 |
|---|---|---|---|---|
| a2-9 (TX-) | P | AVC-LAN communication signal | - | - |
| a2-10 (TX+) | SB | AVC-LAN communication signal | - | - |
| a1-1 (CV+) - a1-9 (CGND) | W - Shielded | Rear television camera display signal input | Engine switch on (IG), telltale light assembly (panoramic view monitor main switch) on, camera lens not covered, displaying image | Pulse generation (See waveform 1) |
| Engine switch on (IG), telltale light assembly (panoramic view monitor main switch) on, camera lens covered, blacking out screen | Pulse generation (See waveform 2) | |||
| a1-3 (CB+) - a1-9 (CGND) | B - Shielded | Power source to rear television camera | Engine switch on (IG) | 5.5 to 7.05 V |
| a2-20 (BLSW) - Body ground | BE - Body ground | Telltale light assembly (panoramic view monitor main switch) switch signal | Engine switch on (IG), telltale light assembly (panoramic view monitor main switch) off | 5.5 to 6.5 V |
| Engine switch on (IG), telltale light assembly (panoramic view monitor main switch) on | Below 1 V | |||
| a1-9 (CGND) - a2-3 (GND1) | Shielded - BR | Rear television camera ground (shield) | Always | Below 1 Ω |
| a1-2 (CV-) - a1-9 (CGND) | R - Shielded | Rear television camera ground | Always | Below 1 Ω |
| a1-11 (LCV-) - a1-24 (LGND) | W - BR | Side television camera LH ground | Always | Below 1 Ω |
| a1-10 (LCV+) - a1-24 (LGND) | R - BR | Side television camera LH display signal input | Engine switch on (IG), telltale light assembly (panoramic view monitor main switch) on, camera lens not covered, displaying image | Pulse generation (See waveform 1) |
| Engine switch on (IG), telltale light assembly (panoramic view monitor main switch) on, camera lens covered, blacking out screen | Pulse generation (See waveform 2) | |||
| a1-24 (LGND) - a2-3 (GND1) | BR - BR | Side television camera LH ground (shield) | Always | Below 1 Ω |
| a1-12 (LCB+) - a1-24 (LGND) | B - BR | Power source to side television camera LH | Engine switch on (IG) | 5.5 to 7.05 V |
| a1-14 (BCV-) - a1-27 (BGND) | R - BR | Front television camera ground | Always | Below 1 Ω |
| a1-13 (BCV+) - a1-27 (BGND) | W - BR | Front television camera display signal input | Waveform 1: Engine switch on (IG), telltale light assembly (panoramic view monitor main switch) on, camera lens not covered, displaying image | Pulse generation (See waveform 1) |
| Waveform 2: Engine switch on (IG), telltale light assembly (panoramic view monitor main switch) on, camera lens covered, blacking out screen | Pulse generation (See waveform 2) | |||
| a1-27 (BGND) - a2-3 (GND1) | BR - BR | Front television camera ground (shield) | Always | Below 1 Ω |
| a1-15 (BCB+) - a1-27 (BGND) | B - BR | Power source to front television camera | Engine switch on (IG) | 5.5 to 7.05 V |
| a1-5 (RCV-) - a1-18 (RGND) | R - BR | Side television camera RH ground | Always | Below 1 Ω |
| a1-4 (RCV+) - a1-18 (RGND) | W - BR | Side television camera RH display signal input | Waveform 1: Engine switch on (IG), telltale light assembly (panoramic view monitor main switch) on, camera lens not covered, displaying image | Pulse generation (See waveform 1) |
| Waveform 2: Engine switch on (IG), telltale light assembly (panoramic view monitor main switch) on, camera lens covered, blacking out screen | Pulse generation (See waveform 2) | |||
| a1-18 (RGND) - a2-3 (GND1) | BR - BR | Side television camera RH ground (shield) | Always | Below 1 Ω |
| a1-6 (RCB+) - a1-18 (RGND) | B - BR | Power source to side television camera 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.
NAVIGATION RECEIVER ASSEMBLY (w/ Navigation System)
RADIO AND DISPLAY RECEIVER ASSEMBLY (w/ Audio and Visual System (for Radio and Display Type)