2001 TOYOTA SEQUOIA side step

H41475H23348
D Squib
(Dual stage ±
2nd step)
D2+ D2±
Spiral
CableAirbag
Sensor
Assembly
Color: Black
A
B D EC F
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1387
1581 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check connector.
CHECK:
Check that the spiral cable connectors (on the steering wheel pad side) are not damaged.
OK:
The lock button is not disengaged, or the claw of the lock is not deformed or damaged.
NG Replace spiral cable (see page RS±21).
OK
3 Check D squib (dual stage ± 2nd step) circuit (short).
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
D2+ ± D2±Always1 MW or higher
NG Go to step 13.
OK
Go to step 10.

H41475H23348
D Squib
(Dual stage ±
2nd step)
D2+ D2±
Spiral
CableAirbag
Sensor
Assembly
Color: Black
A
B D EC F
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1389
1583 Author: Date:
2005 SEQUOIA (RM1146U)
6 Check D squib (dual stage ± 2nd step) circuit (short to B+).
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
NG Go to step 19.
OK
Go to step 11.
7 Check connector.
CHECK:
Check that the spiral cable connectors (on the steering wheel pad side) are not damaged.
OK:
The lock button is not disengaged, or the claw of the lock is not deformed or damaged.
NG Replace spiral cable (see page RS±21).
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).

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).