Toyota Sequoia Limited

2007 RESTRAINTS Supplemental Restraint System - Sequoia

6. Confirm that the beginning sensor reading is within the standard value.

7. Place a 30 kg (66.14 lb) weight (eg. a 30 kg (66.14 lb) of lead mass) onto the passenger seat.

8. Confirm that the sensitivity is within the standard value.

standard value: 27 to 33 kg (59.52 to 72.75 lb)

HINT:

• When performing the sensitivity check, use a solid metal weight (the check result may not appear properly if the weight made from liquid is used).

• When the sensitivity deviates from the standard value, retighten the bolts of the passenger seat taking care not to deform the seat rail. After performing this procedure, if the sensitivity is not within the standard value, replace the front seat assembly RH.

• When zero point calibration has not finished normally, replace the front seat assembly RH.

2007 RESTRAINTS Supplemental Restraint System - Sequoia

Fig. 35: Zero Point Calibration Procedure Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2007 RESTRAINTS Supplemental Restraint System - Sequoia

Fig. 36: Sensitivity Check Procedure

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 36: Sensitivity Check Procedure

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

PROBLEM SYMPTOMS TABLE

Proceed with troubleshooting of each circuit in the table below.

PROBLEM SYMPTOMS CHART

Symptom

Suspected area

See page

The front passenger seat condition differs from the indication by the passenger airbag ON/OFF indicator (DTC is not output).

Trouble in passenger airbag ON / OFF indicator

TROUBLE IN PASSENGER AIRBAG ON / OFF INDICATOR

With the ignition switch is in ON position, the SRS warning light sometimes comes on after approximately 6 seconds.

SRS warning light remains ON

SRS WARNING LIGHT REMAINS ON

The SRS warning light always comes on even when DTC is not output.

SRS warning light remains ON

SRS WARNING LIGHT REMAINS ON

With the ignition switch is in the ON position, the SRS warning light does not come on.

SRS warning light does not come ON

SRS WARNING LIGHT DOES NOT COME ON

Although an SRS warning light operates

2007 RESTRAINTS Supplemental Restraint System - Sequoia

normally, DTC or a normal system code is not display.

TC and CG terminal circuit

TC AND CG TERMINAL CIRCUIT

Although terminals TC and CG of DLC3 are not connected, DTC or a normal system code is display.

TC and CG terminal circuit

TC AND CG TERMINAL CIRCUIT

TERMINALS OF ECU

1. CENTER AIRBAG SENSOR ASSEMBLY

Ign1 Fuse Location Toyota Tacoma
Fig. 37: Identifying Center Airbag Sensor Assembly Connector Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
CENTER AIRBAG SENSOR ASSEMBLY REFERENCE

Terminal No.

Terminal Symbol

Destination

A19-1 ((1))

SFL+

Side airbag assembly LH (Side squib LH)

A19-2 ((1))

SFL-

Side airbag assembly LH (Side squib LH)

A19-3 ((1))

ICL-

Curtain shield airbag assembly LH (Curtain shield airbag LH squib)

A19-4 ((1))

ICL+

Curtain shield airbag assembly LH (Curtain shield airbag LH squib)

A19-5

PL+

Front seat outer belt LH (P/T squib LH)

A19-6

PL-

Front seat outer belt LH (P/T squib LH)

A19-9

LSP+

Seat position sensor

A19-10

LBE+

Front seat inner belt RH (Seat belt buckle switch LH)

A19-17

LSP-

Seat position sensor

A19-18

LBE-

Front seat inner belt RH (Seat belt buckle switch LH)

A19-19

((1))

VUPL Side airbag sensor LH

A19-20

((1))

VUCL Rear airbag sensor LH

2007 RESTRAINTS Supplemental Restraint System - Sequoia

A19-21

((1))

ESL Side airbag sensor LH

A19-22

((1))

ESCL Rear airbag sensor LH

A20-1

P2+

Front passenger airbag assembly (P squib (Dual stage - 2nd step))

A20-2

P2-

Front passenger airbag assembly (P squib (Dual stage - 2nd step))

A20-3

P-

Front passenger airbag assembly (P squib)

A20-4

P+

Front passenger airbag assembly (P squib)

A20-5

D+

Steering wheel pad (D squib)

A20-6

D-

Steering wheel pad (D squib)

A20-7

D2-

Steering wheel pad (D squib (Dual stage - 2nd step))

A20-8

D2+

Steering wheel pad (D squib (Dual stage - 2nd step))

A20-13

PBEW

Integration control and panel (Seat belt warning light)

A20-14

LA

Combination meter (SRS warning light)

A20-15

TC

DLC3

A20-16

SIL

DLC3

A20-17

P-AB

Integration control and panel (Passenger airbag ON/OFF indicator)

A20-18

GSW

Main Body ECU

A20-19 ((1))

RMSW

RSCA cutoff switch

A20-20 ((1))

RMIL

Combination meter (RSCA OFF indicator)

A20-21

IG2

IGN1 Fuse (Power source)

A20-22

GSW2

ECM

A20-23

PAON

Integration control and panel (Passenger airbag ON/OFF indicator)

A20-25

E1

Ground

A20-26

E2

Ground

A20-27

-SR

Front airbag sensor RH

A20-28

-SL

Front airbag sensor LH

A20-29

+SR

Front airbag sensor RH

A20-30

+SL

Front airbag sensor LH

A21-3

PR-

Front seat outer belt RH (P/T squib RH)

A21-4

PR+

Front seat outer belt RH (P/T squib RH)

A21-5 ((1))

ICR+

Curtain shield airbag assembly RH (Curtain shield airbag RH squib)

A21-6 ((1))

ICR-

Curtain shield airbag assembly RH (Curtain shield airbag RH squib)

A21-7 ((1))

SFR-

Side airbag assembly RH (Side squib RH)

A21-8 ((1))

SFR+

Side airbag assembly RH (Side squib RH)

A21-16

FSR+

Occupant classification ECU

A21-19 ((1))

ESCR

Rear airbag sensor RH

A21-20 ((1))

ESR

Side airbag sensor RH

A21-21 ((1))

VUCR

Rear airbag sensor RH

A21-22 ((1))

VUPR

Side airbag sensor RH

2007 RESTRAINTS Supplemental Restraint System - Sequoia

A21-24 | FSR- ¡Occupant classification ECU (l) with Side and curtain shield airbag

2. OCCUPANT CLASSIFICATION ECU

P H1OO9O0LO6

Fig. 38: Identifying Occupant Classification ECU Connector Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

P H1OO9O0LO6

Fig. 38: Identifying Occupant Classification ECU Connector Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

OCCUPANT CLASSIFICATION ECU REFERENCE

Terminal No. (Symbols)

Wiring Color

Terminal Description

Condition

Specification

O6-1 (+B) - O6-3 (GND)

W-R - W-B

Battery

Ignition switch ON

10 to 14 V

O6-2 (DIA) -O6-3 (GND)

G-R - W-B

Diagnosis (DLC3)

Ignition switch ON

Pulse generation

Body ground

Ground

Always

Below 1 V

O6-4 (FSR-) -O6-3 (GND)

B - W-B

Airbag sensor assembly center communication line (-)

Always

Below 1 V

O6-5 (BGND) -O6-3 (GND)

L - W-B

Passenger side buckle switch ground line

Always

Below 1 V

O6-7 (IG) - O6-3 (GND)

B-O - W-B

Power source (IGN1 Fuse)

Ignition switch ON

10 to 14 V

O6-8 (FSR+) -O6-4 (FSR-)

W - B

Airbag sensor assembly center communication line

Ignition switch ON

Pulse generation

O6-9 (BSW) -O6-5 (BGND)

R - L

Passenger side buckle switch line

Always

Pulse generation

O7-1 (SGD1) -O6-3 (GND)

O - W-B

Occupant classification sensor front LH ground line

Always

Below 1 V

O7-2 (SGD2) -O6-3 (GND)

B-Y - W-B

Occupant classification sensor front RH ground line

Always

Below 1 V

O7-3 (SGD3) -O6-3 (GND)

R-B - W-B

Occupant classification sensor rear LH ground line

Always

Below 1 V

2007 RESTRAINTS Supplemental Restraint System - Sequoia

O7-4 (SGD4) -O6-3 (GND)

R-W - W-B

Occupant classification sensor rear RH ground line

Always

Below 1 V

O7-5 (SVC3) -O7-3 (SGD3)

Y-B - R-B

Occupant classification sensor rear LH power supply line

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

4.5 to 5.1 V

O7-6 (SVC4) -O7-4 (SGD4)

Y - R-W

Occupant classification sensor rear RH power supply line

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

4.5 to 5.1 V

O7-7 (SIG1) -O7-1 (SGD1

G - O

Occupant classification sensor front LH signal line

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

0.2 to 4.9 V

O7-8 (SIG2) -O7-2 (SGD2)

LG - B-Y

Occupant classification sensor front RH signal line

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

0.2 to 4.9 V

O7-9 (SIG3) -O7-3 (SGD3)

G-B - R-B

Occupant classification sensor rear LH signal line

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

0.2 to 4.9 V

O7-10 (SIG4) -O7-4 (SGD4)

W

Occupant classification sensor rear RH signal line

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

0.2 to 4.9 V

O7-11 (SVC1) -O7-1 (SGD1)

V - O

Occupant classification sensor front LH power supply line

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

4.5 to 5.1 V

O7-12 (SVC2) -O7-2 (SGD2)

P - B-Y

Occupant classification sensor front RH power supply line

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

4.5 to 5.1 V

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