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 1362 of 4323
DI±1160
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1354 Author: Date:
2005 SEQUOIA (RM1146U)B1794
(DI±1342)
Occupant classification ECU battery
positive line openBattery
ECU±B Fuse
Floor wire
Seat wire No. 1
Occupant classification ECU
ON
B1795
(DI±1348)Occupant classification ECU circuit
malfunctionOccupant classification ECU
Seat wire No. 1
Front seat inner belt RH
ON
B1796
(DI±1350)Sleep operation failure of occupant
classification ECUOccupant classification ECUON
Page 1366 of 4323
H03353H08016G27651H23623
Front Airbag
Sensor RHAirbag
Sensor
Assembly
+SR
±SR
A
B D F
E
C C
Service Wire
+SR ±SR
A20A12
DI±1164
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1358 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check connection of connectors.
PREPARATION:
(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.
CHECK:
Check that the connectors are properly connected to the airbag sensor assembly and the front airbag sensor
RH.
OK:
The connectors are connected securely.
NG Connect connectors, then go to step 1.
OK
3 Check front airbag sensor RH circuit (open).
PREPARATION:
(a) Disconnect the connectors from the airbag sensor as-
sembly and the front airbag sensor RH.
(b) Using a service wire, connect A12±2 (+SR) and A12±1
(±SR) of connector ºEº.
NOTICE:
Do not forcibly insert a service wire into the terminals of the
connector when connecting.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
A20±29 (+SR) ±
A20±27 (±SR)AlwaysBelow 1 W
NG Go to step 8.
OK
Page 1375 of 4323
H03353H08016G27651H23623
Front Airbag
Sensor LHAirbag
Sensor
Assembly
+SL
±SL
A
B D F
E
C C
Service Wire
+SL
±SL
A20A11
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1173
1367 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check connection of connectors.
PREPARATION:
(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.
CHECK:
Check that the connectors are properly connected to the airbag sensor assembly and the front airbag sensor
LH.
OK:
The connectors are connected securely.
NG Connect connectors, then go to step 1.
OK
3 Check front airbag sensor LH circuit (open).
PREPARATION:
(a) Disconnect the connectors from the airbag sensor as-
sembly and the front airbag sensor LH.
(b) Using a service wire, connect A11±2 (+SL) and A11±1
(±SL) of connector ºEº.
NOTICE:
Do not forcibly insert a service wire into the terminals of the
connector when connecting.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
A20±30 (+SL) ±
A20±28 (±SL)AlwaysBelow 1 W
NG Go to step 8.
OK
Page 1384 of 4323
H01015
C91384G27650H23090
Side Airbag
Sensor Assembly RHFloor Wire
Airbag
Sensor
Assembly
VUPR
ESR
SST
A
B C D
VUPR
ESR A21
S16
DI±1182
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1376 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check connection of connectors.
PREPARATION:
(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.
CHECK:
Check that the connectors are properly connected to the airbag sensor assembly and the side airbag sensor
assembly RH.
OK:
The connectors are connected securely.
NG Connect connectors, then go to step 1.
OK
3 Check floor wire (open).
PREPARATION:
(a) Disconnect the connectors from the airbag sensor as-
sembly and the side airbag sensor assembly RH.
(b) Using SST, connect S16±2 (VUPR) and S16±1 (ESR) of
connector ºCº.
SST 09843±18040
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
A21±22 (VUPR) ±
A21±20 (ESR)AlwaysBelow 1 W
NG Repair or replace floor wire.
OK
Page 1390 of 4323
C91384H01010G27652H23571
Side Airbag Sensor
Assembly LH
Airbag
Sensor
Assembly Floor Wire No. 2
ESL
VUPLSST
A
B
C D
A19S15
ESL
VUPL
DI±1188
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1382 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check connection of connectors.
PREPARATION:
(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.
CHECK:
Check that the connectors are properly connected to the airbag sensor assembly and the side airbag sensor
assembly LH.
OK:
The connectors are connected securely.
NG Connect connectors, then go to step 1.
OK
3 Check floor wire No. 2 (open).
PREPARATION:
(a) Disconnect the connectors from the airbag sensor as-
sembly and the side airbag sensor assembly LH.
(b) Using SST, connect S15±2 (VUPL) and S15±1 (ESL) of
connector ºC.º
SST 09843±18040
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
A19±19 (VUPL) ±
A19±21 (ESL)AlwaysBelow 1 W
NG Repair or replace floor wire No. 2.
OK
Page 1396 of 4323
H01015
C91384G27650H23090
Floor Wire
Airbag
Sensor
Assembly
Curtain Shield
Airbag Sensor
Assembly RH
VUCRESCR
SST
A
B C D
A21
VUCRESCR S27
DI±1194
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1388 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check connections of connectors.
PREPARATION:
(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.
CHECK:
Check that the connectors are properly connected to the airbag sensor assembly and the curtain shield air-
bag sensor assembly RH.
OK:
The connectors are connected securely.
NG Connect connectors, then go to step 1.
OK
3 Check floor wire (open).
PREPARATION:
(a) Disconnect the connectors from the airbag sensor as-
sembly and the curtain shield airbag sensor assembly
RH.
(b) Using SST, connect S27±2 (VUCR) and S27±1 (ESCR)
of connector ºCº.
SST SST 09843±18040
CHECK:
Measure the resistance according to the value(s) in the table
below.
Tester ConnectionConditionSpecified Condition
A21±21 (VUCR) ±
A21±19 (ESCR)AlwaysBelow 1 W
NG Repair or replace floor wire.
OK
Page 1402 of 4323
C91384H01010G27652H23575
Curtain Shield
Airbag Sensor
Assembly LH
Floor Wire No. 2
Airbag
Sensor
Assembly
VUCL
ESCL
A
B C D
VUCL ESCLSST
A19S26
DI±1200
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1394 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check connection of connectors.
PREPARATION:
(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.
CHECK:
Check that the connectors are properly connected to the airbag sensor assembly and the curtain shield air-
bag sensor assembly LH.
OK:
The connectors are connected securely.
NG Connect connectors, then go to step 1.
OK
3 Check floor wire No. 2 (open).
PREPARATION:
(a) Disconnect the connectors from the airbag sensor as-
sembly and the curtain shield airbag sensor assembly LH.
(b) Using SST, connect S26±2 (VUCL) and S26±1 (ESCL) of
connector ºCº.
SST 09843±18040
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
A19±20 (VUCL) ±
A19±22 (ESCL)AlwaysBelow 1 W
NG Repair or replace floor wire No. 2.
OK
