Toyota Venza manuals

Toyota Venza: Terminals Of Ecu

TERMINALS OF ECU

1. CHECK COMBINATION METER ASSEMBLY


(a) Measure the resistance and voltage according to the value(s) in the table below.

Tester Connection

Wiring Color

Terminal Description

Condition

Specified Condition

E2-14 (B) - Body ground

Y - Body ground

Battery power supply

Always

11 to 14 V

E2-13 (IG+) - Body ground

BR - Body ground

Ignition switch power supply

Ignition switch ON

11 to 14 V

E2-13 (IG+) - Body ground

BR - Body ground

Ignition switch power supply

Ignition switch off

Below 1 V

E2-11 (E1) - Body ground

B - Body ground

Ground

Always

Below 1 Ω

E2-24 (ES) - Body ground

W - Body ground

Ground

Always

Below 1 Ω

E1-1 (CANH) - Body ground

LG - Body ground

CAN communication line

Always

200 Ω or higher

E1-9 (CANL) - Body ground

W - Body ground

CAN communication line

Always

200 Ω or higher

E1-5 (P/SB) - Body ground

G - Body ground

Front passenger side seat belt warning light signal

Front passenger side seat occupied, seat belt fastened

11 to 14 V

E1-5 (P/SB) - Body ground

G - Body ground

Front passenger side seat belt warning light signal

Front passenger side seat occupied, seat belt unfastened

Below 1 V

  • If the result is not as specified, the combination meter assembly may have a malfunction.

2. CHECK ACCESSORY METER ASSEMBLY


(a) Measure the resistance and voltage according to the value(s) in the table below.

Tester Connection

Wiring Color

Terminal Description

Condition

Specified Condition

F2-1 (B) - Body ground

P - Body ground

Battery power supply

Always

11 to 14 V

F2-13 (IG+) - Body ground

L - Body ground

Ignition switch power supply

Ignition switch ON

11 to 14 V

F2-13 (IG+) - Body ground

L - Body ground

Ignition switch power supply

Ignition switch off

Below 1 V

F2-12 (E) - Body ground

B - Body ground

Ground

Always

Below 1 Ω

F2-20 (PBEW) - Body ground

G - Body ground

Front passenger side seat belt warning light signal

Front passenger side seat occupied, seat belt fastened

11 to 14 V

F2-20 (PBEW) - Body ground

G - Body ground

Front passenger side seat belt warning light signal

Front passenger side seat occupied, seat belt unfastened

Below 1 V

  • If the result is not as specified, the accessory meter assembly may have a malfunction.

3. CHECK CENTER AIRBAG SENSOR ASSEMBLY


Terminal No.

Terminal Symbol

Destination

M28-16

FSR+

Occupant classification ECU

M28-24

FSR-

Occupant classification ECU

L31-10

LBE+

Front seat inner belt assembly (for driver side)

L31-18

LBE-

Front seat inner belt assembly (for driver side)

4. CHECK OCCUPANT CLASSIFICATION ECU


(a) Measure the voltage according to the value(s) in the table below.

Tester Connection

Wiring Color

Terminal Description

Condition

Specification

S12-1 (+B) - S12-3 (GND)*1

M14-1 (+B) - M14-3 (GND)*2

GR - W-B*1

G - W-B*2

Battery power supply

Always

10 to 14 V

S12-2 (DIA) - S12-3 (GND)*1

M14-2 (DIA) - M14-3 (GND)*2

SB - W-B

Diagnosis (DLC3)

Ignition switch ON

Pulse generation

S12-3 (GND) - Body ground*1

M14-3 (GND) - Body ground*2

W-B - Body ground

Ground

Always

Below 1 V

S12-7 (IG) - S12-3 (GND)*1

M14-7 (IG) - M14-3 (GND)*2

V - W-B

Ignition switch power supply

Ignition switch ON

10 to 14 V

S12-8 (FSR+) - S12-4 (FSR-)*1

M14-8 (FSR+) - M14-4 (FSR-)*2

W - B

Center airbag sensor assembly communication line

Ignition switch ON

Pulse generation

S12-9 (BSW) - S12-5 (BGND)*1

M14-9 (BSW) - M14-5 (BGND)*2

L - GR*1

G - Y*2

Front passenger side buckle switch line

Always

4 to 14 V

S13-1 (SGD1) - S12-3 (GND)*1

S13-1 (SGD1) - M14-3 (GND)*2

R - W-B*1

Y - W-B*2

Front occupant classification sensor LH ground line

Always

Below 1 V

S13-2 (SGD2) - S12-3 (GND)*1

S13-2 (SGD2) - M14-3 (GND)*2

Y - W-B*1

SB - W-B*2

Front occupant classification sensor RH ground line

Always

Below 1 V

S13-3 (SGD3) - S12-3 (GND)*1

S13-3 (SGD3) - M14-3 (GND)*2

BR - W-B*1

L - W-B*2

Rear occupant classification sensor LH ground line

Always

Below 1 V

S13-4 (SGD4) - S12-3 (GND)*1

S13-4 (SGD4) - M14-3 (GND)*2

LG - W-B*1

W - W-B*2

Rear occupant classification sensor RH ground line

Always

Below 1 V

S13-11 (SVC1) - S13-1 (SGD1)

Y - R*1

P - Y*2

Front occupant classification sensor LH power supply line

Ignition switch ON, a load applied to front occupant classification sensor LH

4.9 to 5.1 V

S13-12 (SVC2) - S13-2 (SGD2)

V - Y*1

BR - SB*2

Front occupant classification sensor RH power supply line

Ignition switch ON, a load applied to front occupant classification sensor RH

4.9 to 5.1 V

S13-5 (SVC3) - S13-3 (SGD3)

G - BR*1

R - L*2

Rear occupant classification sensor LH power supply line

Ignition switch ON, a load applied to rear occupant classification sensor LH

4.9 to 5.1 V

S13-6 (SVC4) - S13-4 (SGD4)

GR - LG*1

B - W*2

Rear occupant classification sensor RH power supply line

Ignition switch ON, a load applied to rear occupant classification sensor RH

4.9 to 5.1 V

S13-7 (SIG1) - S13-1 (SGD1)

P - R*1

BE - Y*2

Front occupant classification sensor LH signal line

Ignition switch ON, a load applied to front occupant classification sensor LH

0 to 5.1 V

S13-8 (SIG2) - S13-2 (SGD2)

GR - Y*1

GR - SB*2

Front occupant classification sensor RH signal line

Ignition switch ON, a load applied to front occupant classification sensor RH

0 to 5.1 V

S13-9 (SIG3) - S13-3 (SGD3)

L - BR*1

G - L*2

Rear occupant classification sensor LH signal line

Ignition switch ON, a load applied to rear occupant classification sensor LH

0 to 5.1 V

S13-10 (SIG4) - S13-4 (SGD4)

SB - LG*1

V - W*2

Rear occupant classification sensor RH signal line

Ignition switch ON, a load applied to rear occupant classification sensor RH

0 to 5.1 V

  • *1: w/ Power Seat
  • *2: w/o Power Seat
  • If the result is not as specified, the occupant detection ECU may have a malfunction.
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