Page 1561 of 4323

H01003H10600H01075H23352
D Squib
Spiral
CableAirbag
Sensor
Assembly
DTC 51
DLC3
TC CG
FEDC
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1359
1553 Author: Date:
2005 SEQUOIA (RM1146U)
9 Replace steering wheel pad (D squib).
PREPARATION:
(a) Replace the steering wheel pad (see page RS±21).
HINT:
Perform the inspection using parts from a normal vehicle if pos-
sible.
(b) Connect the connectors to the airbag sensor assembly.
(c) 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 51 is not output.
HINT:
Codes other than DTC 51 may be output at this time, but they
are not related to this check.
NG Replace airbag sensor assembly
(see page RS±82).
OK
END
Page 1562 of 4323
H01002H23349
D Squib
Spiral
CableAirbag
Sensor
Assembly
C D
E F
DI±1360
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1554 Author: Date:
2005 SEQUOIA (RM1146U)
10 Check airbag sensor assembly.
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 B1800 is not output.
HINT:
Codes other than DTC B1800 may be output at this time, but
they are not related to this check.
NG Replace airbag sensor assembly
(see page DI±1137).
OK
Go to step 12.
Page 1563 of 4323

H23975H01002H23988
D Squib
D+ D±
Spiral
Cable
Color: Orange Service Wire
C D
E F
Airbag
Sensor
Assembly
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1361
1555 Author: Date:
2005 SEQUOIA (RM1146U)
11 Check airbag sensor assembly.
PREPARATION:
(a) From the step 6:
Turn the ignition switch to the LOCK position.
(b) From the step 6:
Disconnect the negative (±) terminal cable from the bat-
tery, and wait for at least 90 seconds.
(c) Connect the connectors to the airbag sensor assembly.
(d) Using a service wire, connect D+ and D± of the connector
ºEº.
NOTICE:
Twist the end of the service wire in order to insert it
into the connector.
Do not forcibly insert the twisted service wire into the
terminals of the connector when connecting.
(e) 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 B1801, B1802 or B1803 is not output.
HINT:
Codes other than DTC B1801, B1802 and B1803 may be out-
put at this time, but they are not related to this check.
NG Replace airbag sensor assembly
(see page RS±82).
OK
Page 1564 of 4323

H01003H23354
D Squib
Spiral
Cable
Airbag
Sensor
Assembly
C D
E F
DI±1362
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1556 Author: Date:
2005 SEQUOIA (RM1146U)
12 Check steering wheel pad (D squib).
PREPARATION:
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (±) terminal cable from the bat-
tery, and wait for at least 90 seconds.
(c) From the step 11:
Disconnect the service wire from connector ºEº.
(d) Connect the connectors to the steering wheel pad.
(e) 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 B1800, B1801, B1802 or B1803 is not output.
HINT:
Codes other than DTC B1800, B1801, B1802 and B1803 may
be output at this time, but they are not related to this check.
NG
Replace steering wheel pad
(see page RS±82).
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).
HINT:
Perform the simulation method by selecting the check mode with the hand±held tester (see page
DI±1151).
After selecting the check mode, perform the simulation method by wiggling each connector of the air-
bag system or driving the vehicle on a city or rough road (see page DI±1151).
Page 1565 of 4323
H41440H23351
D Squib
Spiral
CableAirbag
Sensor
Assembly
D+
D±
C
D E FA
B
Cowl Wire
A23
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1363
1557 Author: Date:
2005 SEQUOIA (RM1146U)
13 Check cowl wire (short).
PREPARATION:
Disconnect the cowl wire connector from the spiral cable.
HINT:
The activation prevention mechanism of connector ºBº has al-
ready been released.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
A23±1 (D+) ± A23±2 (D±)Always1 MW or higher
NG Repair or replace cowl wire.
OK
Page 1566 of 4323
H23974H01000H24510
D Squib
Spiral
CableAirbag
Sensor
Assembly
D+
D±
Color: Orange
A
B C D
E F
DI±1364
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1558 Author: Date:
2005 SEQUOIA (RM1146U)
14 Check spiral cable (short).
PREPARATION:
Release the activation prevention mechanism built into con-
nector ºDº (see page DI±1137).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
D+ ± D±Always1 MW or higher
NG Replace spiral cable (see page RS±21).
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).
HINT:
Perform the simulation method by selecting the check mode with the hand±held tester (see page
DI±1151).
After selecting the check mode, perform the simulation method by wiggling each connector of the air-
bag system or driving the vehicle on a city or rough road (see page DI±1151).
Page 1567 of 4323
H41440H23351
D Squib
Spiral
CableAirbag
Sensor
Assembly
D+
D±
C
D E FA
B
Cowl Wire
A23
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1365
1559 Author: Date:
2005 SEQUOIA (RM1146U)
15 Check cowl wire (open).
PREPARATION:
Disconnect the cowl wire connector from the spiral cable.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
A23±1 (D+) ± A23±2 (D±)AlwaysBelow 1 W
NG Repair or replace cowl wire.
OK
Page 1568 of 4323
H23974H01000H24510
D Squib
Spiral
CableAirbag
Sensor
Assembly
D+
D±
Color: Orange
A
B C D
E F
DI±1366
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1560 Author: Date:
2005 SEQUOIA (RM1146U)
16 Check spiral cable (open).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
D+ ± D±AlwaysBelow 1 W
NG Replace spiral cable (see page RS±21).
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).
HINT:
Perform the simulation method by selecting the check mode with the hand±held tester (see page
DI±1151).
After selecting the check mode, perform the simulation method by wiggling each connector of the air-
bag system or driving the vehicle on a city or rough road (see page DI±1151).