CHECK PARKING ASSIST ECU
Measure the voltage, resistance and check for pulses according to value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| I3-1 (+B) - I3-3 (GND1) | L - W-B | Power source signal | Always | 11 to 14 V |
| I3-3 (GND1) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
| I3-7 (IG) - I3-3 (GND1) | L - W-B | IG power source signal | Ignition switch ON | 11 to 14 V |
| I3-8 (ACC) - I3-3 (GND1) | P - W-B | ACC power source signal | Ignition switch ACC | 11 to 14 V |
| I2-11 (CV-) - I3-3 (GND1) | W - W-B | Rear television camera ground | Always | Below 1 V |
| I2-12 (CV+) - I2-11 (CV-) | R - W | Rear television camera display signal (NTSC) input | Ignition switch ON, shift lever in R | Pulse generation (See waveform 1) |
| Ignition switch ON, shift lever in R, screen blacked out by covering camera lens | Pulse generation (See waveform 2) |
|||
| I2-13 (CGND) - I3-3 (GND1) | GR - W-B | Rear television camera shielded ground | Always | Below 1 V |
| I2-14 (CB+) - I3-3 (GND1) | B - W-B | Power source to rear television camera | Ignition switch ON, shift lever in R | 5.8 to 7.05 V |
Using an oscilloscope, check waveform 1.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | I2-12 (CV+) - I2-11 (CV-) |
| Tool Setting | 0.2 V/DIV., 50 μsec./DIV. |
| Condition | Ignition switch ON, shift lever in R |
Using an oscilloscope, check waveform 2.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | I2-12 (CV+) - I2-11 (CV-) |
| Tool Setting | 0.2 V/DIV., 50 μsec./DIV. |
| Condition | Ignition switch ON, shift lever in R, screen blacked out by covering camera lens |