2001 TOYOTA SEQUOIA steering wheel

DIDGL±01
H24009
A19A20A21
17
24 18
23 19
22 20
21 4 8372615
12 13 11 14 10
15 9
16
28 27 26 25 30 294 8372615 4 8372615
10 9 12 13 11 14 15 16 10 9 12 13 11 14 15 16
17 18 19 20 24 23 22 21 17 18 19 20 24 23 22 21
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1133
1327 Author: Date:
2005 SEQUOIA (RM1146U)
TERMINALS OF ECU
1. AIRBAG SENSOR ASSEMBLY
Terminal No.Terminal SymbolDestination
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±5PL+Front seat outer belt LH (P/T squib LH)
A19±6PL±Front seat outer belt LH (P/T squib LH)
A19±9LSP+Seat position airbag sensor assembly
A19±10LBE+Front seat inner belt RH (Seat belt buckle switch LH)
A19±17LSP±Seat position airbag sensor assembly
A19±18LBE±Front seat inner belt RH (Seat belt buckle switch LH)
A19±19 (*1)VUPLSide airbag sensor assembly LH
A19±20 (*1)VUCLCurtain shield airbag sensor assembly LH
A19±21 (*1)ESLSide airbag sensor assembly LH
A19±22 (*1)ESCLCurtain shield airbag sensor assembly LH
A20±1P2+Front passenger airbag assembly (P squib (Dual stage ± 2nd
step))
A20±2P2±Front passenger airbag assembly (P squib (Dual stage ± 2nd
step))
A20±3P±Front passenger airbag assembly (P squib)
A20±4P+Front passenger airbag assembly (P squib)
A20±5D+Steering wheel pad (D squib)
A20±6D±Steering wheel pad (D squib)
A20±7D2±Steering wheel pad (D squib (Dual stage ± 2nd step))
A20±8D2+Steering wheel pad (D squib (Dual stage ± 2nd step))
A20±13PBEWIntegration control and panel (Seat belt warning light)
A20±14LACombination meter (SRS warning light)
A20±15TCDLC3

H24029
Curtain Shield Airbag
Sensor Assembly RH
(*1)
Side Airbag Sensor
Assembly RH (*1)
Front Airbag
Sensor RH
RSCA OFF Switch
(*1)
Airbag Sensor
Assembly
Front Airbag
Sensor LH
Side Airbag Sensor
Assembly LH (*1)
Curtain Shield AIrbag
Sensor Assembly LH
(*1)Spiral CableTo
Occupant
Classification ECU
Front Seat Outer
Belt RH
(P/T Squib RH)
Side Airbag
Assembly RH
(Side Squib RH) (*1)
Front Passenger
Airbag Assembly
(P Squib)
Integration Control
and Panel
(Passenger Airbag
ON/OFF Indicator)
Combination Meter
(SRS Warning Light/
RSCA OFF Indicator
(*1))
Steering Wheel
Pad (D Squib)
Side Airbag
Assembly LH
(Side Squib LH) (*1)
Curtain Shield Airbag
Assembly LH (Curtain
Shield Airbag LH
Squib) (*1)
Front Seat Outer
Belt LH
(P/T Squib LH)
Seat Position AIrbag
Sensor Assembly/
Front Seat Inner Belt LH
(Buckle Switch LH)Curtain Shield Airbag
Assembly RH
(Curtain Shield Airbag
RH Squib) (*1)
9 13
10 14
11
1512
16 15
2 6
37
4 8
25 29
26 30
27 33
28 34
1721
1822
19 23
2024
3
4
7
89
10
13
14 11
1227
28
29
30 31
32
31
32 DI±1144
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1338 Author: Date:
2005 SEQUOIA (RM1146U)

DI±1156
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1350 Author: Date:
2005 SEQUOIA (RM1146U)B1656/38
(DI±1220)

Seat belt buckle switch LH malfunction

Front seat inner belt LH

Airbag sensor assembly

Floor wire No. 2
ON
B1660/43
(DI±1227)
Passenger airbag ON/OFF indicator malfunction

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

Airbag sensor assembly

Cowl wire
ON
B1661/44
(*1)
(DI±1238)

Roll over cut off indicator malfunction

Combination meter (RSCA OFF indicator)

Airbag sensor assembly

Cowl wire
ON
B1662/45
(DI±1247)
SRS warning light circuit malfunction

Combination meter (SRS warning light)

Airbag sensor assembly

Cowl wire
ON
B1800/51
(DI±1352)
Short in D squib circuit

Steering wheel pad (D squib)

Spiral cable

Airbag sensor assembly

Cowl wire
ON
B1801/51
(DI±1352)
Open in D squib circuit

Steering wheel pad (D squib)

Spiral cable

Airbag sensor assembly

Cowl wire
ON
B1802/51
(DI±1352)
Short in D squib circuit (to ground)

Steering wheel pad (D squib)

Spiral cable

Airbag sensor assembly

Cowl wire
ON
B1803/51
(DI±1352)
Short in D squib circuit (to B+)

Steering wheel pad (D squib)

Spiral cable

Airbag sensor assembly

Cowl wire
ON
B1805/52
(DI±1374)
Short in P squib circuit

Front passenger airbag assembly (P squib)

Airbag sensor assembly

Cowl wire
ON
B1806/52
(DI±1374)
Open in P squib circuit

Front passenger airbag assembly (P squib)

Airbag sensor assembly

Cowl wire
ON
B1807/52
(DI±1374)
Short in P squib circuit (to ground)

Front passenger airbag assembly (P squib)

Airbag sensor assembly

Cowl wire
ON
B1808/52
(DI±1374)
Short in P squib circuit (to B+)

Front passenger airbag assembly (P squib)

Airbag sensor assembly

Cowl wire
ON
B1810/53
(DI±1384)
Short in D squib (Dual stage ± 2nd step) circuit

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

Spiral cable

Airbag sensor assembly

Cowl wire
ON
B1811/53
(DI±1384)
Open in D squib (Dual stage ± 2nd step) circuit

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

Spiral cable

Airbag sensor assembly

Cowl wire
ON

± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1157
1351 Author: Date:
2005 SEQUOIA (RM1146U)B1812/53
(DI±1384)

Short in D squib (Dual stage ± 2nd step) circuit
(to ground)

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

Spiral cable

Airbag sensor assembly

Cowl wire
ON
B1813/53
(DI±1384)
Short in D squib (Dual stage ± 2nd step) circuit
(to B+)

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

Spiral cable

Airbag sensor assembly

Cowl wire
ON
B1815/54
(DI±1406)
Short in P squib (Dual stage ± 2nd step) circuit

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

Airbag sensor assembly

Cowl wire
ON
B1816/54
(DI±1406)
Open in P squib (Dual stage ± 2nd step) circuit

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

Airbag sensor assembly

Cowl wire
ON
B1817/54
(DI±1406)
Short in P squib (Dual stage ± 2nd step) circuit
(to ground)

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

Airbag sensor assembly

Cowl wire
ON
B1818/54
(DI±1406)
Short in P squib (Dual stage ± 2nd step) circuit
(to B+)

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

Airbag sensor assembly

Cowl wire
ON
B1820/55
(*1)
(DI±1416)

Short in side squib RH circuit

Side airbag assembly RH (Side squib RH)

Airbag sensor assembly

Floor wire
ON
B1821/55
(*1)
(DI±1416)

Open in side squib RH circuit

Side airbag assembly RH (Side squib RH)

Airbag sensor assembly

Floor wire
ON
B1822/55
(*1)
(DI±1416)

Short in side squib RH circuit (to ground)

Side airbag assembly RH (Side squib RH)

Airbag sensor assembly

Floor wire
ON
B1823/55
(*1)
(DI±1416)

Short in side squib RH circuit (to B+)

Side airbag assembly RH (Side squib RH)

Airbag sensor assembly

Floor wire
ON
B1825/56
(*1)
(DI±1426)

Short in side squib LH circuit

Side airbag assembly LH (Side squib LH)

Airbag sensor assembly

Floor wire No. 2
ON
B1826/56
(*1)
(DI±1426)

Open in side squib LH circuit

Side airbag assembly LH (Side squib LH)

Airbag sensor assembly

Floor wire No. 2
ON
B1827/56
(*1)
(DI±1426)

Short in side squib LH circuit (to ground)

Side airbag assembly LH (Side squib LH)

Airbag sensor assembly

Floor wire No. 2
ON
B1828/56
(*1)
(DI±1426)

Short in side squib LH circuit (to B+)

Side airbag assembly LH (Side squib LH)

Airbag sensor assembly

Floor wire No. 2
ON
B1830/57
(*1)
(DI±1436)

Short in curtain shield airbag RH squib circuit

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

Airbag sensor assembly

Floor wire
ON

H02757H10600H40103H23566
CG
TCDTC B1610/13
DLC3 Front Airbag
Sensor RHAirbag
Sensor
Assembly
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1163
1357 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
CAUTION:
Be sure to perform the following procedures before troubleshooting to avoid unexpected airbag de-
ployment.
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (±) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connectors from the airbag sensor assembly.
(d) Disconnect the connectors from the steering wheel pad.
(e) Disconnect the connectors from the front passenger airbag assembly.
(f) w/ Side and curtain shield airbag:
Disconnect the connectors from the side airbag assembly LH and RH.
(g) w/ Side and curtain shield airbag:
Disconnect the connectors from the curtain shield airbag assembly LH and RH.
(h) Disconnect the connectors from the front seat outer belt LH and RH.
1 Check DTC.
PREPARATION:
(a) Connect the connectors to the airbag sensor assembly.
(b) Connect the negative (±) terminal cable to the battery,
and wait for at least 2 seconds.
CHECK:
(a) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(b) Clear the DTCs stored in memory (see page DI±1147).
(c) Turn the ignition switch to the LOCK position.
(d) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(e) Check the DTCs (see page DI±1147).
OK:
DTC B1610/13 is not output.
HINT:
Codes other than DTC B1610/13 may be output at this time, but
they are not related to this check.
NG Go to step 2.
OK
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check (see page DI±1137).

H10600 H02757W02044H23570
CG TCDTC B1615/14
DLC3 Front Airbag
Sensor LHAirbag
Sensor
Assembly
DI±1172
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1366 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
CAUTION:
Be sure to perform the following procedures before troubleshooting to avoid unexpected airbag de-
ployment.
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (±) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connectors from the airbag sensor assembly.
(d) Disconnect the connectors from the steering wheel pad.
(e) Disconnect the connectors from the front passenger airbag assembly.
(f) w/ Side and curtain shield airbag:
Disconnect the connectors from the side airbag assembly LH and RH.
(g) w/ Side and curtain shield airbag:
Disconnect the connectors from the curtain shield airbag assembly LH and RH.
(h) Disconnect the connectors from the front seat outer belt LH and RH.
1 Check DTC.
PREPARATION:
(a) Connect the connectors to the airbag sensor assembly.
(b) Connect the negative (±) terminal cable to the battery,
and wait for at least 2 seconds.
CHECK:
(a) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(b) Clear the DTCs stored in memory (see page DI±1147).
(c) Turn the ignition switch to the LOCK position.
(d) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(e) Check the DTCs (see page DI±1147).
OK:
DTC B1615/14 is not output.
HINT:
Codes other than DTC B1615/14 may be output at this time, but
they are not related to this check.
NG Go to step 2.
OK
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check (see page DI±1137).

C84208H10600H43425H24649
CG
TCDTC B1620/21
DLC3
Side Airbag Sensor
Assembly RH
Airbag
Sensor
Assembly
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1181
1375 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
CAUTION:
Be sure to perform the following procedures before troubleshooting to avoid unexpected airbag de-
ployment.
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (±) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connectors from the airbag sensor assembly.
(d) Disconnect the connectors from the steering wheel pad.
(e) Disconnect the connectors from the front passenger airbag assembly.
(f) w/ Side and curtain shield airbag:
Disconnect the connectors from the side airbag assembly LH and RH.
(g) w/ Side and curtain shield airbag:
Disconnect the connectors from the curtain shield airbag assembly LH and RH.
(h) Disconnect the connectors from the front seat outer belt LH and RH.
1 Check DTC.
PREPARATION:
(a) Connect the connectors to the airbag sensor assembly.
(b) Connect the negative (±) terminal cable to the battery,
and wait for at least 2 seconds.
CHECK:
(a) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(b) Clear the DTCs stored in memory (see page DI±1147).
(c) Turn the ignition switch to the LOCK position.
(d) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(e) Check the DTCs (see page DI±1147).
OK:
DTC B1620/21 is not output.
HINT:
Codes other than DTC B1620/21 may be output at this time, but
they are not related to this check.
NG Go to step 2.
OK
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check (see page DI±1137).

C91342C84216H10600H24647
CG
TCDTC B1625/22
DLC3 Side Airbag Sensor
Assembly LHAirbag
Sensor
Assembly
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1187
1381 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
CAUTION:
Be sure to perform the following procedures before troubleshooting to avoid unexpected airbag de-
ployment.
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (±) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connectors from the airbag sensor assembly.
(d) Disconnect the connectors from the steering wheel pad.
(e) Disconnect the connectors from the front passenger airbag assembly.
(f) w/ Side and curtain shield airbag:
Disconnect the connectors from the side airbag assembly LH and RH.
(g) w/ Side and curtain shield airbag:
Disconnect the connectors from the curtain shield airbag assembly LH and RH.
(h) Disconnect the connectors from the front seat outer belt LH and RH.
1 Check DTC.
PREPARATION:
(a) Connect the connectors to the airbag sensor assembly.
(b) Connect the negative (±) terminal cable to the battery,
and wait for at least 2 seconds.
CHECK:
(a) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(b) Clear the DTCs stored in memory (see page DI±1147).
(c) Turn the ignition switch to the LOCK position.
(d) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(e) Check the DTCs (see page DI±1147).
OK:
DTC B1625/22 is not output.
HINT:
Codes other than DTC B1625/22 may be output at this time, but
they are not related to this check.
NG Go to step 2.
OK
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check (see page DI±1137).