TERMINALS OF ECU
1. CHECK COMBINATION METER ASSEMBLY
(a) Disconnect the F14 combination meter assembly connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
F14-15 (B) - Body ground |
L - Body ground |
Battery power supply |
Always |
11 to 14 V |
F14-17 (IG+) - Body ground |
R - Body ground |
Ignition switch power supply |
Ignition switch off |
Below 1 V |
Ignition switch ON |
11 to 14 V |
|||
F14-20 (E1) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
2. CHECK CENTER AIRBAG SENSOR ASSEMBLY
Terminal No. |
Symbol |
Description |
---|---|---|
O1-10 |
LBE+ |
Front seat inner belt assembly LH (Seat belt buckle switch LH) |
O1-18 |
LBE- |
Front seat inner belt assembly LH (Seat belt buckle switch LH) |
N1-16 |
FSR+ |
Occupant detection ECU |
N1-24 |
FSR- |
Occupant detection ECU |
3. CHECK OCCUPANT DETECTION 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 power supply 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 power supply 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 signal 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 signal line |
Ignition switch ON, load applied to rear occupant classification sensor RH |
0 to 5.1 V |
If the result is not as specified, the occupant detection ECU may have a malfunction.
Inspection
INSPECTION
PROCEDURE
1. INSPECT REAR NO. 1 SEAT OUTER BELT ASSEMBLY
(a) Check the ELR.
(1) When the inclination of the retractor is 15° or less, check that
the belt can be pulled from the retractor. When the inclination of the retractor
...
Tires
Replace or rotate tires in accordance with maintenance schedules and
treadwear.
Checking tires
1. New tread
2. Treadwear indicator
3. Worn tread
The location of treadwear indicators is shown by the “TWI” or “Δ” marks,
etc., molded on the ...