1. CHECK OCCUPANT CLASSIFICATION ECU
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Terminal No. (Symbols)
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Wiring Color
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Terminal Description
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Condition
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Specification
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Y2-1 (+B) - Y2-3 (GND)
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W - W-B
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Battery
|
Ignition switch ON
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11 to 14 V
|
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Y2-2 (DIA) - Y2-3 (GND)
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GR - W-B
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Diagnosis (DLC3)
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Ignition switch ON
|
Pulse generation
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Y2-3 (GND) - Body ground
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W-B - Body ground
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Ground
|
Always
|
Below 1 Ω
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Y2-4 (FSR-) - Y2-3 (GND)
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Y - W-B
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Center airbag sensor communication ground line
|
Always
|
Below 1 Ω
|
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Y2-5 (BGND) - Y2-3 (GND)
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P - W-B
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Passenger side buckle switch ground line
|
Always
|
Below 1 Ω
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Y2-7 (IG2) - Y2-3 (GND)
|
B - W-B
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Power source (IGN fuse)
|
Ignition switch ON
|
11 to 14 V
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Y2-8 (FSR+) - Y2-4 (FSR-)
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L - Y
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Center airbag sensor communication line
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Ignition switch ON
|
Pulse generation
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Y2-9 (BSW) - Y2-5 (BGND)
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G - P
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Passenger side buckle switch line
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Ignition switch ON, buckle switch ON
|
0.12 to 0.18 A
|
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Ignition switch ON, buckle switch OFF
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0.4 to 0.7 mA
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Y1-1 (SGD1) - Y2-3 (GND)
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G - W-B
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Front occupant detection sensor LH ground line
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Always
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Below 1 Ω
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Y1-2 (SGD2) - Y2-3 (GND)
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O - W-B
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Front occupant detection sensor RH ground line
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Always
|
Below 1 Ω
|
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Y1-3 (SGD3) - Y2-3 (GND)
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W - W-B
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Rear occupant detection sensor LH ground line
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Always
|
Below 1 Ω
|
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Y1-4 (SGD4) - Y2-3 (GND)
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BR - W-B
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Rear occupant detection sensor RH ground line
|
Always
|
Below 1 Ω
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Y1-11 (SVC1) - Y1-1 (SGD1)
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R - G
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Front occupant detection sensor LH power supply line
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Ignition switch ON, load is applied to front occupant detection sensor
LH
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4.5 to 5.1 V
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Y1-12 (SVC2) - Y1-2 (SGD2)
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W - O
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Front occupant detection sensor RH power supply line
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Ignition switch ON, load is applied to front occupant detection sensor
RH
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4.5 to 5.1 V
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Y1-5 (SVC3) - Y1-3 (SGD3)
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GR - W
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Rear occupant detection sensor LH power supply line
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Ignition switch ON, load is applied to rear occupant detection sensor
LH
|
4.5 to 5.1 V
|
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Y1-6 (SVC4) - Y1-4 (SGD4)
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V - BR
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Rear occupant detection sensor RH power supply line
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Ignition switch ON, load is applied to rear occupant detection sensor
RH
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4.5 to 5.1 V
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Y1-7 (SIG1) - Y1-1 (SGD1)
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P - G
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Front occupant detection sensor LH signal line
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Ignition switch ON, load is applied to front occupant detection sensor
LH
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Pulse generation
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Y1-8 (SIG2) - Y1-2 (SGD2)
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L - O
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Front occupant detection sensor RH signal line
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Ignition switch ON, load is applied to front occupant detection sensor
RH
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Pulse generation
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Y1-9 (SIG3) - Y1-3 (SGD3)
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Y - W
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Rear occupant detection sensor LH signal line
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Ignition switch ON, load is applied to rear occupant detection sensor
LH
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Pulse generation
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Y1-10 (SIG4) - Y1-4 (SGD4)
|
B - BR
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Rear occupant detection sensor RH signal line
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Ignition switch ON, load is applied to rear occupant detection sensor
RH
|
Pulse generation
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