2001 TOYOTA SEQUOIA shield
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DIDGQ±01
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1155
1349 Author: Date:
2005 SEQUOIA (RM1146U)
DIAGNOSTIC TROUBLE CODE CHART
1. DTCS FOR SUPPLEMENTAL RESTRAINT SYSTEM
If a trouble code is displayed during the DTC check, check the circuit listed for the code in the table below
(Proceed to the page listed for that circuit).
HINT:
When the SRS warning light remains on and the DTC output is the normal system code, a voltage
source drop is likely to occur. This malfunction is not stored in the memory by the airbag sensor assem-
bly. If the power source voltage returns to normal, the SRS warning light will automatically go off.
When 2 or more codes are indicated, the code with the lower number appears first.
If a code is not listed on the display chart, the airbag sensor assembly may have failed.
In the case of any malfunction concerning an open circuit, short to ground, or short to B+ due to a squib,
other malfunction codes may not be detected. In this case, repair the malfunction currently indicated
and then perform malfunction diagnosis again.
Mark in the check mode column:
ºº: DTC is corresponding to the check mode.
º º: DTC is not corresponding to the check mode.
When the DTC B1650/32 is detected as a result of troubleshooting for the Supplemental Restraint Sys-
tem, perform troubleshooting for the occupant classification system as shown in the chart below.
DTC No.
(See
Page)
Detection ItemTrouble AreaCheck ModeSRS
Warning Light
B1000/31
(DI±1161)Airbag sensor assembly malfunctionAirbag sensor assemblyON
B1610/13
(DI±1162)Front airbag sensor RH malfunction
Front airbag sensor RH
Airbag sensor assembly
Cowl wire
Engine room main wire
ON
B1615/14
(DI±1171)Front airbag sensor LH malfunction
Front airbag sensor LH
Airbag sensor assembly
Cowl wire
Engine room main wire
ON
B1620/21
(*1)
(DI±1180)
Side airbag sensor assembly RH malfunction
Side airbag sensor assembly RH
Airbag sensor assembly
Floor wire
ON
B1625/22
(*1)
(DI±1186)
Side airbag sensor assembly LH malfunction
Side airbag sensor assembly LH
Airbag sensor assembly
Floor wire No. 2
ON
B1630/23
(*1)
(DI±1192)
Curtain shield airbag sensor RH malfunction
Curtain shield airbag sensor assembly RH
Airbag sensor assembly
Floor wire
ON
B1635/24
(*1)
(DI±1198)
Curtain shield airbag sensor LH malfunction
Curtain shield airbag sensor assembly LH
Airbag sensor assembly
Floor wire No. 2
ON
B1650/32
(DI±1204)Occupant classification system malfunction
Occupant classification system
Airbag sensor assembly
Floor wire
Seat wire No. 1
ON
B1653/35
(DI±1213)Seat position sensor assembly malfunction
Seat position airbag sensor assembly
Airbag sensor assembly
Floor wire No. 2
ON
Page 1359 of 4323
± 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
Page 1360 of 4323
DI±1158
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1352 Author: Date:
2005 SEQUOIA (RM1146U)B1831/57
(*1)
(DI±1436)
Open in curtain shield airbag RH squib circuit
Curtain shield airbag assembly RH
(Curtain shield airbag RH squib)
Airbag sensor assembly
Floor wire
ON
B1832/57
(*1)
(DI±1436)Short in curtain shield airbag RH squib circuit
(to ground)
Curtain shield airbag assembly RH
(Curtain shield airbag RH squib)
Airbag sensor assembly
Floor wire
ON
B1833/57
(*1)
(DI±1436)Short in curtain shield airbag RH squib circuit
(to B+)
Curtain shield airbag assembly RH
(Curtain shield airbag RH squib)
Airbag sensor assembly
Floor wire
ON
B1835/58
(*1)
(DI±1447)
Short in curtain shield airbag LH squib circuit
Curtain shield airbag assembly LH
(Curtain shield airbag LH squib)
Airbag sensor assembly
Floor wire No. 2
ON
B1836/58
(*1)
(DI±1447)
Open in curtain shield airbag LH squib circuit
Curtain shield airbag assembly LH
(Curtain shield airbag LH squib)
Airbag sensor assembly
Floor wire No. 2
ON
B1837/58
(*1)
(DI±1447)Short in curtain shield airbag LH squib circuit
(to ground)
Curtain shield airbag assembly LH
(Curtain shield airbag LH squib)
Airbag sensor assembly
Floor wire No. 2
ON
B1838/58
(*1)
(DI±1447)Short in curtain shield airbag LH squib circuit
(to B+)
Curtain shield airbag assembly LH
(Curtain shield airbag LH squib)
Airbag sensor assembly
Floor wire No. 2
ON
B1900/73
(DI±1458)Short in P/T squib RH circuit
Front seat outer belt RH (P/T squib RH)
Airbag sensor assembly
Floor wire
ON
B1901/73
(DI±1458)Open in P/T squib RH circuit
Front seat outer belt RH (P/T squib RH)
Airbag sensor assembly
Floor wire
ON
B1902/73
(DI±1458)Short in P/T squib RH circuit (to ground)
Front seat outer belt RH (P/T squib RH)
Airbag sensor assembly
Floor wire
ON
B1903/73
(DI±1458)Short in P/T squib RH circuit (to B+)
Front seat outer belt RH (P/T squib RH)
Airbag sensor assembly
Floor wire
ON
B1905/74
(DI±1469)Short in P/T squib LH circuit
Front seat outer belt LH (P/T squib LH)
Airbag sensor assembly
Floor wire No. 2
ON
B1906/74
(DI±1469)Open in P/T squib LH circuit
Front seat outer belt LH (P/T squib LH)
Airbag sensor assembly
Floor wire No. 2
ON
B1907/74
(DI±1469)Short in P/T squib LH circuit (to ground)
Front seat outer belt LH (P/T squib LH)
Airbag sensor assembly
Floor wire No. 2
ON
B1908/74
(DI±1469)Short in P/T squib LH circuit (to B+)
Front seat outer belt LH (P/T squib LH)
Airbag sensor assembly
Floor wire No. 2
ON
Page 1361 of 4323
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1159
1353 Author: Date:
2005 SEQUOIA (RM1146U)Normal
(DI±1480)
Source voltage dropBattery
Airbag sensor assemblyON
NormalSystem normalOFF
*1: w/ Side and curtain shield airbag
2. DTCS FOR OCCUPANT CLASSIFICATION SYSTEM
If a trouble code is displayed during the DTC check, check the circuit listed for the code in the table below
(Proceed to the page listed for that circuit).
HINT:
When the DTC B1650/32 is detected as a result of troubleshooting for the Supplemental Restraint Sys-
tem, perform troubleshooting for the occupant classification system as shown in the chart below.
Use the hand±held tester to check/clear the DTC of the occupant classification ECU, otherwise the
DTC cannot be check/clear.
DTC No.
(See Page)Detection ItemTrouble AreaPassenger Airbag
ON/OFF Indicator
B1771
(DI±1251)Passenger side buckle switch circuit
malfunctionFront seat inner belt RH
Occupant classification ECU
Seat wire No. 1
ON
B1780
(DI±1260)
Occupant classification sensor front
LH circuit malfunctionFront seat assembly RH (Occupant classification sensor
front LH)
Occupant classification ECU
Seat wire No. 1
ON
B1781
(DI±1270)
Occupant classification sensor front
RH circuit malfunctionFront seat assembly RH (Occupant classification sensor
front RH)
Occupant classification ECU
Seat wire No. 1
ON
B1782
(DI±1280)
Occupant classification sensor rear
LH circuit malfunctionFront seat assembly RH (Occupant classification sensor
rear LH)
Occupant classification ECU
Seat wire No. 1
ON
B1783
(DI±1290)
Occupant classification sensor rear
RH circuit malfunctionFront seat assembly RH (Occupant classification sensor
rear RH)
Occupant classification ECU
Seat wire No. 1
ON
B1785
(DI±1300)Occupant classification sensor front
LH collision detectionFront seat assembly RH (Occupant classification sensor
front LH)
Occupant classification ECU
ON
B1786
(DI±1305)Occupant classification sensor front
RH collision detectionFront seat assembly RH (Occupant classification sensor
front RH)
Occupant classification ECU
ON
B1787
(DI±1310)Occupant classification sensor rear
LH collision detectionFront seat assembly RH (Occupant classification sensor
rear LH)
Occupant classification ECU
ON
B1788
(DI±1315)Occupant classification sensor rear
RH collision detectionFront seat assembly RH (Occupant classification sensor
rear RH)
Occupant classification ECU
ON
B1790
(DI±1320)
Airbag sensor assembly communica-
tion circuit malfunctionOccupant classification ECU
Airbag sensor assembly
Floor wire
Seat wire No. 1
ON
B1793
(DI±1332)Occupant classification sensor power
supply circuit malfunctionOccupant classification ECU
Front seat assembly RH (Occupant classification sensors)
Seat wire No. 1
ON
Page 1365 of 4323
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).
Page 1374 of 4323
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).
Page 1383 of 4323
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).
Page 1389 of 4323
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).