2001 TOYOTA SEQUOIA terminal TC

H23635
P Squib
Airbag
Sensor
Assembly
P±P+
Cowl Wire
A
B C D
A22
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1379
1573 Author: Date:
2005 SEQUOIA (RM1146U)
6 Check cowl wire (P squib circuit).
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
A22±1 (P+) ±
Body groundIgnition switch ONBelow 1 V
A22±2 (P±) ±
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
A22±1 (P+) ± A22±2 (P±)AlwaysBelow 1 W
A22±1 (P+) ±
Body groundAlways1 MW or higher
A22±2 (P±) ±
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
A22±1 (P+) ± A22±2 (P±)Always1 MW or higher
NG Repair or replace cowl wire.
OK

H10600 H01024H01076H23357
P Squib
Airbag
Sensor
Assembly
DTC 52 DLC3
TC CG
DC
DI±1380
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1574 Author: Date:
2005 SEQUOIA (RM1146U)
7 Replace front passenger airbag assembly (P squib).
PREPARATION:
(a) Replace the front passenger airbag assembly (see page
RS±33).
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 52 is not output.
HINT:
Codes other than DTC 52 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

H01023H23358
P Squib
Airbag
Sensor
Assembly
DC
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1381
1575 Author: Date:
2005 SEQUOIA (RM1146U)
8 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 B1805 is not output.
HINT:
Codes other than DTC B1805 may be output at this time, but
they are not related to this check.
NG Replace airbag sensor assembly
(see page RS±82).
OK
Go to step 10.

H23801H01023H23990
P Squib
Airbag
Sensor
Assembly Cowl Wire
C
D
P±
P+
SST
A22
DI±1382
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1576 Author: Date:
2005 SEQUOIA (RM1146U)
9 Check airbag sensor assembly.
PREPARATION:
(a) From the step 5:
Turn the ignition switch to the LOCK position.
(b) From the step 5:
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 SST, connect A22±1 (P+) and A22±2 (P±) of con-
nector ºCº.
SST 09843±18040
(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 B1806, B1807 or B1808 is not output.
HINT:
Codes other than DTC B1806, B1807 and B1808 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

H01024H23360
P Squib
Airbag
Sensor
Assembly
C D
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1383
1577 Author: Date:
2005 SEQUOIA (RM1146U)
10 Check front passenger airbag assembly (P 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 9:
Disconnect the SST from connector ºCº.
(d) Connect the connector to the front passenger airbag as-
sembly.
(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 B1805, B1806, B1807 or B1808 is not output.
HINT:
Codes other than DTC B1805, B1806, B1807 and B1808 may
be output at this time, but they are not related to this check.
NG Replace front passenger airbag assembly
(see page DI±1137).
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).

DI±1386
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1580 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
Be sure to perform the following procedures before troubleshooting to avoid unexpected airbag de-
ployment.
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (±) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connectors from the airbag sensor assembly.
(d) Disconnect the connectors from the steering wheel pad.
(e) Disconnect the connectors from the front passenger airbag assembly.
(f) w/ Side and curtain shield airbag:
Disconnect the connectors from the side airbag assembly LH and RH.
(g) w/ Side and curtain shield airbag:
Disconnect the connectors from the curtain shield airbag assembly LH and RH.
(h) Disconnect the connectors from the front seat outer belt LH and RH.
1 Check DTC.
CHECK:
(a) Proceed to each step according to how to read DTC.
(1) If using the hand±held tester (read the 5±digit of DTC):
Using the hand±held tester, check the DTCs (see page DI±1147).
RESULT:
DTC B1810 is output.A
DTC B1811 is output.B
DTC B1812 is output.C
DTC B1813 is output.D
(2) If not using the hand±held tester (read the 2±digit of DTC):
Check the DTCs (see page DI±1147).
RESULT:
DTC 53 is output.E
HINT:
Codes other than DTC B1810, B1811, B1812, B1813 and DTC 53 may be output at this time, but they are
not related to this check.
B Go to step 4.
C Go to step 5.
D Go to step 6.
E Go to step 7.
A

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

H41475H23348
D Squib
(Dual stage ±
2nd step)
D2+ D2±
Spiral
CableAirbag
Sensor
Assembly
Color: Black
A
B D EC F
DI±1390
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1584 Author: Date:
2005 SEQUOIA (RM1146U)
8 Check D squib (dual stage ± 2nd step) circuit.
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 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 21.
OK