2001 TOYOTA SEQUOIA Page 18

H01002C89252H23353
D2+ D2±
Spiral
Cable D Squib
(Dual stage ±
2nd step)
Color: Black Service Wire
C E
D FAirbag
Sensor
Assembly
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1393
1587 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 D2+ and D2± of 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 B1811, B1812 or B1813 is not output.
HINT:
Codes other than DTC B1811, B1812 and B1813 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

H01003H23354
Spiral
CableAirbag
Sensor
Assembly D Squib
(Dual stage ±
2nd step)
C ED F
DI±1394
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1588 Author: Date:
2005 SEQUOIA (RM1146U)
12 Check steering wheel pad (D squib, dual stage ± 2nd step).
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 B1810, B1811, B1812 or B1813 is not output.
HINT:
Codes other than DTC B1810, B1811, B1812 and B1813 may
be output at this time, but they are not related to this check.
NG
Replace steering wheel pad
(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).

H41479H23350
Spiral
CableAirbag
Sensor
Assembly
D2+
D2±
D Squib
(Dual stage ±
2nd step)
Color: Black
A
B D EC F
DI±1396
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1590 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
D2+ ± D2±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).

H41479H23350
Spiral
CableAirbag
Sensor
Assembly
D2+
D2±
D Squib
(Dual stage ±
2nd step)
Color: Black
A
B D EC F
DI±1398
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1592 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
D2+ ± D2±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).

H41479H23350
Spiral
CableAirbag
Sensor
Assembly
D2+
D2±
D Squib
(Dual stage ±
2nd step)
Color: Black
A
B D EC F
DI±1400
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1594 Author: Date:
2005 SEQUOIA (RM1146U)
18 Check spiral cable (short to ground).
CHECK:
(a) Measure the resistance according to the value(s) in the
table below.
OK:
Tester ConnectionConditionSpecified Condition
D2+ ± Body groundAlways1 MW or higher
D2± ± Body groundAlways1 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).

H41479H23350
Spiral
CableAirbag
Sensor
Assembly
D2+
D2±
D Squib
(Dual stage ±
2nd step)
Color: Black
A
B D EC F
DI±1402
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1596 Author: Date:
2005 SEQUOIA (RM1146U)
20 Check spiral cable (short to B+).
CHECK:
Measure the voltage according to the value(s) in the table be-
low when the ignition switch is in the ON position.
OK:
Tester ConnectionConditionSpecified Condition
D2+ ± Body groundIgnition switch ONBelow 1 V
D2± ± Body groundIgnition switch ONBelow 1 V
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).

H41440H23351
Spiral
CableAirbag
Sensor
Assembly
D2+
D2±
D Squib
(Dual stage ±
2nd step)
B C ED FACowl Wire
A23
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1403
1597 Author: Date:
2005 SEQUOIA (RM1146U)
21 Check cowl wire.
PREPARATION:
(a) Restore the released activation prevention mechanism of
connector ºBº to the original condition.
(b) Disconnect the cowl wire connector from the spiral cable.
(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.
(b) Measure the voltage according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
A23±4 (D2+) ±
Body groundIgnition switch ONBelow 1 V
A23±3 (D2±) ±
Body groundIgnition switch ONBelow 1 V
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.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
A23±4 (D2+) ±
A23±3 (D2±)AlwaysBelow 1 W
A23±4 (D2+) ±
Body groundAlways1 MW or higher
A23±3 (D2±) ±
Body groundAlways1 MW or higher
PREPARATION:
Release the activation prevention mechanism built into con-
nector ºBº (see page DI±1137).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
A23±4 (D2+) ±
A23±3 (D2±)Always1 MW or higher
NG Repair or replace cowl wire.
OK

H41479H23350
Spiral
CableAirbag
Sensor
Assembly
D2+
D2±
D Squib
(Dual stage ±
2nd step)
Color: Black
A
B D EC F
DI±1404
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1598 Author: Date:
2005 SEQUOIA (RM1146U)
22 Check spiral cable.
PREPARATION:
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.
(b) Measure the voltage according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
D2+ ± Body groundIgnition switch ONBelow 1 V
D2± ± Body groundIgnition switch ONBelow 1 V
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.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
D2+ ± D2±AlwaysBelow 1 W
D2+ ± Body groundAlways1 MW or higher
D2± ± body groundAlways1 MW or higher
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
D2+ ± D2±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).