Toyota Sequoia (2005). Manual — part 349
C84216
H10600
H43425
C91342
H23573
Side Airbag
Sensor Assembly RH
Airbag
Sensor
Assembly
DTC B1620/21
DTC B1625/22
CG
TC
DLC3
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–1191
1385
7
Check side airbag sensor assembly LH.
PREPARATION:
(a)
Connect the connectors to the airbag sensor assembly.
(b)
Interchange the side airbag sensor assembly RH with LH
and connect the connectors to them.
(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
(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)
OK:
DTC B1625/22 is output.
A
DTC B1620/21 is output.
B
DTC B1620/21 and B1625/22 are not
output.
C
HINT:
Codes other than DTC B1620/21 and B1625/22 may be output
at this time, but they are not related to this check.
A
Replace airbag sensor assembly
(see page
).
B
Replace side airbag sensor assembly LH
(see page
).
C
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
H02751
Airbag Sensor Assembly
S27
Curtain Shield Airbag
Sensor Assembly RH
A21
21
W
2
A21
19
B
1
VUCR
ESCR
VUCR
ESCR
DI–1192
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
1386
DTC
B1630/23 Curtain Shield Airbag Sensor (RH)
Malfunction
CIRCUIT DESCRIPTION
The curtain shield airbag sensor assembly RH consists of the safing sensor the diagnostic circuit, the lateral
deceleration sensor, etc.
If the airbag sensor assembly receives signals from the lateral deceleration sensor, it determines whether
or not the SRS should be activated.
DTC B1630/23 is recorded when a malfunction is detected in the curtain shield airbag sensor RH circuit.
DTC No.
DTC Detection Condition
Trouble Area
B1630/23
The airbag sensor assembly receives a short circuit sig-
nal, an open circuit signal, a short circuit to ground signal
or a short circuit to B+ signal in the curtain shield airbag
sensor RH circuit for 2 seconds.
Curtain shield airbag sensor assembly RH malfunction
Airbag sensor assembly malfunction
Curtain shield airbag sensor assembly RH
Airbag sensor assembly
Floor wire
WIRING DIAGRAM
DIDGW–01
H10600
H01012
H24646
H24648
CG
TC
DTC B1630/23
DLC3
Airbag
Sensor
Assembly
Curtain Shield
Airbag Sensor
Assembly RH
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–1193
1387
INSPECTION PROCEDURE
CAUTION:
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 horn button assembly.
(e)
Disconnect the connectors from the front passenger airbag assembly.
(f)
w/ Side and curtain shield airbag:
Disconnect the connectors from the front seat 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 assembly LH and RH.
1
Check DTC.
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
(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)
OK:
DTC B1630/23 is not output.
HINT:
Codes other than DTC B1630/23 may be output at this time, but
they are not related to this check.
NG
Go to step 2.
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
H01015
C91384 G27650
H23090
Floor Wire
Airbag
Sensor
Assembly
Curtain Shield
Airbag Sensor
Assembly RH
VUCR
ESCR
SST
A
B
C
D
A21
VUCR
ESCR
S27
DI–1194
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
1388
2
Check connections of connectors.
PREPARATION:
(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.
CHECK:
Check that the connectors are properly connected to the airbag sensor assembly and the curtain shield air-
bag sensor assembly RH.
OK:
The connectors are connected securely.
NG
Connect connectors, then go to step 1.
OK
3
Check floor wire (open).
PREPARATION:
(a)
Disconnect the connectors from the airbag sensor as-
sembly and the curtain shield airbag sensor assembly
RH.
(b)
Using SST, connect S27–2 (VUCR) and S27–1 (ESCR)
of connector ”C”.
SST
SST 09843–18040
CHECK:
Measure the resistance according to the value(s) in the table
below.
Tester Connection
Condition
Specified Condition
A21–21 (VUCR) –
A21–19 (ESCR)
Always
Below 1
Ω
NG
Repair or replace floor wire.
OK
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