Toyota 4Runner manuals

Toyota 4Runner: Terminals Of Ecu

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

Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are lis ...

Data List / Active Test
DATA LIST / ACTIVE TEST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether ...

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