TERMINALS OF ECU
System information
| CHECK CLEARANCE WARNING ECU |
| Symbols (Terminal No.) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
| IG (Q37-8) - E (Q37-27) |
Y - W-B |
IG signal / IG power source |
Engine switch on (IG) |
10 to 14 V |
| E (Q37-27) - Body ground |
W-B - Body ground |
ECU ground |
Always |
Below 1 Ω |
| S1 (Q37-5) - E1 (Q37-18) |
Y - BR |
Ultrasonic sensor (Front right sensor) |
Signals are transmitted from ECU to front right sensor (During OFF sensing) |
Pulse generation (see waveform 1) |
| S4 (Q37-6) - E4 (Q37-19) |
GR- BR |
Ultrasonic sensor (Front left sensor) |
Signals are transmitted from ECU to front left center sensor (During OFF sensing) |
Pulse generation (see waveform 1) |
| S5 (Q37-2) - E5 (Q37-15) |
GR - W |
Ultrasonic sensor (Rear right sensor) |
Signals are transmitted from ECU to front right sensor (During OFF sensing) |
Pulse generation (see waveform 1) |
| S6 (Q37-4) - E6 (Q37-17) |
P - W |
Ultrasonic sensor (Rear left sensor) |
Signals are transmitted from ECU to front left sensor (During OFF sensing) |
Pulse generation (see waveform 1) |
| S7 (Q37-1) - E7 (Q37-14) |
R - W |
Ultrasonic sensor (Rear right center sensor) |
Signals are transmitted from ECU to rear right center sensor (During OFF sensing) |
Pulse generation (see waveform 1) |
| S8 (Q37-3) - E8 (Q37-16) |
G - W |
Ultrasonic sensor (Rear left center sensor) |
Signals are transmitted from ECU to rear left center sensor (During OFF sensing) |
Pulse generation (see waveform 1) |
| E1 (Q37-18) - Body ground |
BR - Body ground |
Ultrasonic sensor (Front right sensor) ground |
Always |
Bellow 1 Ω |
| E4 (Q37-19) - Body ground |
BR - Body ground |
Ultrasonic sensor (Front left sensor) ground |
Always |
Bellow 1 Ω |
| E5 (Q37-15) - Body ground |
W - Body ground |
Ultrasonic sensor (Rear right sensor) ground |
Always |
Bellow 1 Ω |
| E6 (Q37-17) - Body ground |
W - Body ground |
Ultrasonic sensor (Rear left sensor) ground |
Always |
Bellow 1 Ω |
| E7 (Q37-14) - Body ground |
W - Body ground |
Ultrasonic sensor (Rear right center sensor) ground |
Always |
Bellow 1 Ω |
| E8 (Q37-16) - Body ground |
W - Body ground |
Ultrasonic sensor (Rear left center sensor) ground |
Always |
Bellow 1 Ω |
| CBZ (Q37-9) - E (Q37-27) |
O - W-B |
Buzzer output |
Buzzer sounding |
Pulse generation (see waveform 2) |
| M+ (Q37-26) - E (Q37-27) |
BR - W-B |
BEAN communication |
Engine switch on (IG), clearance sonar main switch ON |
Pulse generation |
Reference:
Waveform 1
Item
Content
Symbols
(Terminal No.)
S1 (Q37-5) - E1 (Q37-18)
S4 (Q37-6) - E4 (Q37-19)
S5 (Q37-2) - E5 (Q37-15)
S6 (Q37-4) - E6 (Q37-17)
S7 (Q37-1) - E7 (Q37-14)
S8 (Q37-3) - E8 (Q37-16)
Tool Setting
2 V/DIV., 100 μsec./DIV.
Condition
Signals are transmitted from ECU to sensor (During OFF sensing)
Waveform 2
Item
Content
Symbols
(Terminal No.)
CBZ (Q37-9) - E (Q37-27)
Tool Setting
2 V/DIV., 1 msec./DIV.
Condition
Buzzer sounding