TERMINALS OF ECU
1. CHECK OCCUPANT CLASSIFICATION ECU
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
a9-1 (+B) - a9-3 (GND) |
W - W-B |
Battery power supply |
Always |
11 to 14 V |
a9-2 (DIA) - a9-3 (GND) |
GR - W-B |
Diagnosis (DLC3) |
Ignition switch ON |
Pulse generation |
a9-3 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 V |
a9-4 (FSR-) - a9-3 (GND) |
LG - W-B |
Center airbag sensor assembly communication line |
Always |
Below 1 V |
a9-5 (BGND) - a9-3 (GND) |
P - W-B |
Front passenger side buckle switch ground line |
Always |
Below 1 V |
a9-7 (IG2) - a9-3 (GND) |
B - W-B |
Ignition switch power supply |
Ignition switch ON |
11 to 14 V |
a9-8 (FSR+) - a9-4 (FSR- ) |
L - LG |
Center airbag sensor assembly communication line |
Ignition switch ON |
Pulse generation |
a9-9 (BSW) - a9-5 (BGND) |
G - P |
Front passenger side buckle switch line |
Always |
Pulse generation |
a10-1 (SGD1) - a9-3 (GND) |
G - W-B |
Front occupant classification sensor LH ground line |
Always |
Below 1 V |
a10-2 (SGD2) - a9-3 (GND) |
LG - W-B |
Front occupant classification sensor RH ground line |
Always |
Below 1 V |
a10-3 (SGD3) - a9-3 (GND) |
W - W-B |
Rear occupant classification sensor LH ground line |
Always |
Below 1 V |
a10-4 (SGD4) - a9-3 (GND) |
BR - W-B |
Rear occupant classification sensor RH ground line |
Always |
Below 1 V |
a10-11 (SVC1) - a10-1 (SGD1) |
R - G |
Front occupant classification sensor LH power supply line |
Ignition switch ON, load applied to front occupant classification sensor LH |
4.9 to 5.1 V |
a10-12 (SVC2) - a10-2 (SGD2) |
W - LG |
Front occupant classification sensor RH power supply line |
Ignition switch ON, load applied to front occupant classification sensor RH |
4.9 to 5.1 V |
a10-5 (SVC3) - a10-3 (SGD3) |
GR - W |
Rear occupant classification sensor LH signal line |
Ignition switch ON, load applied to rear occupant classification sensor LH |
4.9 to 5.1 V |
a10-6 (SVC4) - a10-4 (SGD4) |
V - BR |
Rear occupant classification sensor RH signal line |
Ignition switch ON, load applied to rear occupant classification sensor RH |
4.9 to 5.1 V |
a10-7 (SIG1) - a10-1 (SGD1) |
P - G |
Front occupant classification sensor LH signal line |
Ignition switch ON, load applied to front occupant classification sensor LH |
0 to 5.1 V |
a10-8 (SIG2) - a10-2 (SGD2) |
L - LG |
Front occupant classification sensor RH signal line |
Ignition switch ON, load applied to front occupant classification sensor RH |
0 to 5.1 V |
a10-9 (SIG3) - a10-3 (SGD3) |
SB - W |
Rear occupant classification sensor LH power supply line |
Ignition switch ON, load applied to rear occupant classification sensor LH |
0 to 5.1 V |
a10-10 (SIG4) - a10-4 (SGD4) |
B - BR |
Rear occupant classification sensor RH power supply line |
Ignition switch ON, load applied to rear occupant classification sensor RH |
0 to 5.1 V |
No Response from ID BOX (B2789)
DESCRIPTION
This DTC is stored when LIN communication between the certification ECU and ID
code box stops for 10 seconds or more.
DTC Code
DTC Detection Condition
Trouble Area
B2789
No communicat ...
Removal
REMOVAL
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for the RH and LH sides.
The procedure listed below is for the LH side.
PROCEDURE
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION:
Wait at least 90 seconds after d ...