Page 1345 of 4323

H24023
H24021
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1143
1337 Author: Date:
2005 SEQUOIA (RM1146U)
7. CHECK PASSENGER AIRBAG ON/OFF INDICATOR
(a) Turn the ignition switch to the ON position.
(b) Check that the passenger airbag ON/OFF indicator (ºONº
and ºOFFº) comes on for approximately 4 seconds, then
goes off for approximately 2 seconds.
HINT:
Refer to the table in step 4 regarding the passenger airbag ON/
OFF indicator when the ignition switch is turned to the ON posi-
tion and approximately 6 seconds pass.
8. CHECK RSCA OFF INDICATOR
(a) Check that the RSCA OFF indicator is off when turning
the ignition switch to the ON position.
(b) Check that the RSCA OFF indicator comes on when turn-
ing the RSCA OFF switch on (press the switch for approxi-
mately 2 seconds) with the ignition switch on.
(c) Turn the ignition switch to the LOCK position with the
RSCA OFF indicator is on, and then turn the ignition
switch to the ON position. Check that the RSCA OFF indi-
cator is off.
9. RELEASE METHOD OF ACTIVATION PREVENTION MECHANISM
The activation prevention mechanism is built into the connector for the squib circuit of the SRS.
As explained in the troubleshooting section, insert a piece of paper that is the same thickness as the male
terminal between the terminal and the short spring to release it (Refer to the illustrations on the next 3 pages).
CAUTION:
Never release the activation prevention mechanism on the squib connector even when inspecting
with the squib disconnected.
NOTICE:
Do not release the activation prevention mechanism unless specially directed by the trouble-
shooting procedure.
To prevent the terminal and the short spring from being damaged, always use a piece of paper
that is the same thickness as the male terminal.
Page 1346 of 4323

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 1350 of 4323

DI±1148
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1342 Author: Date:
2005 SEQUOIA (RM1146U)
2. CLEAR DTC (Using SST service wire)
Clear the DTCs.
(1) When the ignition switch is turned off, the DTCs are
cleared.
HINT:
Some DTC may not be cleared by turning off the ignition switch.
In this case, proceed to the next procedure.
(2) Using SST, connect terminals TC and CG of the
DLC3, and then turn the ignition switch to the ON
position.
SST 09843±18040
(3) Disconnect terminal TC of the DLC3 within 3 to 10
seconds after the DTCs are output, and check if the
SRS warning light comes on after 3 seconds of dis-
connecting.
(4) Within 2 to 4 seconds after the SRS warning light
comes on, connect terminals TC and CG of the
DLC3.
(5) The SRS warning light should go off within 2 to 4 se-
conds after connecting terminals TC and CG of the
DLC3. Then, disconnect terminal TC within 2 to 4
seconds after the SRS warning light goes off.
(6) The SRS warning light comes on again within 2 to
4 seconds after disconnecting terminal TC. Then,
reconnect terminals TC and CG within 2 to 4 se-
conds after the SRS warning light comes on.
Page 1351 of 4323
H13049
Ignition
Switch
DLC3
SRS Warning
Light (*)
OFFON
OFFON Open
Short
T1 T4T6
T2T5 T7 0.5 sec.
T1: 0 to 8 second
T2: approx. 6 seconds
T3: 3 to 5 seconds
T4: 3 to 10 seconds
T5: 2 to 4 seconds
T6: 1 to 5 seconds
T7: within 1 secondT31.5 sec.0.25 sec.
T6 T5
T6 T5 T5
0.25 sec.
*: The past trouble code in the illustration shows DTC 21 as an example.0.5 sec. TC
CG
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1149
1343 Author: Date:
2005 SEQUOIA (RM1146U)
(7) Check if the SRS warning light goes off 2 to 4 se-
conds after connecting terminals TC and CG of the
DLC3. Also check if the normal system code is out-
put within 1 second after the SRS warning light goes
off.
If DTCs are not cleared, repeat this procedure until the codes
are cleared.
Page 1352 of 4323
A08841
Hand±held Tester
DLC3
DI±1150
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1344 Author: Date:
2005 SEQUOIA (RM1146U)
3. CHECK DTC (Using hand±held tester)
HINT:
Refer to the hand±held tester operator's manual for further de-
tails.
(a) Check the DTCs.
(1) Connect the hand±held tester to the DLC3.
(2) Turn the ignition switch to the ON position.
(3) Check the DTCs by following the prompts on the
tester screen.
HINT:
When check the DTC of the occupant classification ECU, select
the ºOCCUPANT DETECTº on the hand±held tester.
(b) Clear the DTCs.
(1) Connect the hand±held tester to the DLC3.
(2) Turn the ignition switch to the ON position.
(3) Clear the DTCs by following the prompts on the tes-
ter screen.
HINT:
When clear the DTC of the occupant classification ECU, select
the ºOCCUPANT DETECTº on the hand±held tester.