2001 TOYOTA SEQUOIA airbag
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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)
Page 1347 of 4323
H23825
Occupant
Classification ECUFront Seat Inner
Belt RH
(Buckle Switch RH)
Occupant
Classification
Sensor Front LH
Occupant
Classification
Sensor Front RH
Occupant
Classification
Sensor Rear LH
Occupant
Classification
Sensor Rear RH 35
36
37
3839
40
41
42
40
41
40
41
40
41 From
Airbag Sensor Assembly
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1145
1339 Author: Date:
2005 SEQUOIA (RM1146U)
Page 1348 of 4323
H24030
Airbag Sensor Assembly Connector
24 4
Short SpringShort Spring Short Spring
Before Release
After Release
Short Spring
Paper
Short Spring
Paper
Connector18
Short SpringShort SpringShort Spring
PaperPaper
Before Release After Release
Connector26
Short Spring
Short SpringShort Spring
PaperPaperBefore Release After Release
Connector28
Short Spring
Before Release After Release
Short Spring
Short SpringPaperPaper
DI±1146
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1340 Author: Date:
2005 SEQUOIA (RM1146U)
Page 1349 of 4323
DIDGN±01
H10658
DLC3
TC CG
H13050
0.5
2.5 4.0
1.50.5
DTC 11
DTC 31Repeat 0.75
ON
OFF0.25 0.25
ON
OFF
0.25 Normal System Code
(w/o Past Trouble Code)
Normal System Code
(w/ Past Trouble Code)
Trouble Code
(Example Codes 11 and 31)
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1147
1341 Author: Date:
2005 SEQUOIA (RM1146U)
DTC CHECK / CLEAR
1. CHECK DTC (Using SST check wire)
(a) Check the DTCs (Present trouble code).
(1) Turn the ignition switch to the ON position, and wait
for approximately 60 seconds.
(2) Using SST, connect terminals TC and CG of the
DLC3.
SST 09843±18040
NOTICE:
Connect the terminals to the correct positions to avoid a
malfunction.
(b) Check the DTCs (Past trouble code).
(1) Using SST, connect terminals TC and CG of the
DLC3.
SST 09843±18040
NOTICE:
Connect the terminals to the correct positions to avoid a
malfunction.
(2) Turn the ignition switch to the ON position, and wait
for approximately 60 seconds.
(c) Read the DTCs.
Read the blinking patterns of the DTCs. As examples, the
blinking patterns for trouble codes 11 and 31 are shown
in the illustration to the left.
Normal system code (w/o past trouble code)
The light blinks twice per second.
Normal system code (w/ past trouble code)
When the past trouble code is stored in the
airbag sensor assy center, the light blinks
only once per second.
Trouble code
The first blinking indicates the first DTC. The
second blinking occurs after a 1.5±second
pause.
If there are more than 1 code, there will be a 2.5±second pause
between each code. After all codes are shown, there will be a
4.0±second pause, and they all will be repeated.
HINT:
If 2 or more malfunctions are found, the indication begins
with the smallest numbered code.
If DTCs are indicated without connecting the terminals,
proceed to the ºTC terminal circuitº on page DI±1498.
Page 1354 of 4323
DIDGP±01
DI±1152
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1346 Author: Date:
2005 SEQUOIA (RM1146U)
DATA LIST / ACTIVE TEST
HINT:
By accessing the DATA LIST displayed by the hand±held tester, you can perform such functions as reading
the values of the switches and sensors without removing any parts. Reading the DATA LIST is the first step
of troubleshooting and is one method to shorten labor time.
1. DATA LIST FOR AIRBAG SENSOR ASSEMBLY
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Following the display on the tester screen, read the ºDATA LISTº.
ItemMeasurement tem/
Range (Display)Normal ConditionDiagnostic Note
D SEAT POSITION
Seat position (Driver side)/
FORWARD: Seat position
is forward
BKWARD: Seat position is
rearward
FAIL: A failure is detected
FORWARD/BKWARD±
PASSENGER CLASS
Passenger classification/
NG: Data is not deter-
mined
NONE: Vacant
CHILD: Child (less than 36
kg (79.37 lb)) is seated
SMALL: Adult (36 to 54 kg
(79.37 to 119.05 lb)) is
seated
REGULAR: Adult (more
than 54 kg (119.05 lb)) is
seated
FAIL: A failure is detected
NG/NONE/CHILD/SMALL/
REGULAR±
D BUCKLE SW
Buckle switch (Driver side)/
UNSET: The seat belt is
not fastened
SET: The seat belt is fas-
tened
NG: Data is not deter-
mined
UNSET/SET±
P BUCKLE SW
Buckle switch (Passenger
side)/
UNSET: The seat belt is
not fastened
SET: The seat belt is fas-
tened
NG: Data is not deter-
mined
UNSET/SET±
DISPLAY TYPE
Display type identification
information/
LR: The display is indi-
cated by LH/RH
DP: The display is indi-
cated by Driver/Passenger
LR/DPFor this vehicle, the display
is displayed by LH/RH.
Page 1357 of 4323
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 1358 of 4323
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
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