Toyota Sequoia (2005). Manual — part 418
H01020
H43107
H23605
P/T Squib RH
PR–
PR+
Floor Wire
Service Wire
C
D
Airbag
Sensor
Assembly
P11
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–1467
1661
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 P11–1 (PR+) and P11–2
(PR–) of connector ”C”.
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
(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 B1901, B1902 or B1903 is not output.
HINT:
Codes other than DTC B1901, B1902 and B1903 may be out-
put at this time, but they are not related to this check.
NG
Replace airbag sensor assembly
(see page
).
OK
H23966
Airbag
Sensor
Assembly
C
D
P/T Squib RH
DI–1468
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
1662
12
Check front seat outer belt RH (P/T squib RH).
PREPARATION:
(a)
Turn the ignition switch to the LOCK position.
(b)
Disconnect the negative (–) terminal cable from the bat-
tery, and wait at least for 90 seconds.
(c)
From the step 11:
Disconnect the service wire from connector ”C”.
(d)
Connect the connector to the front seat outer belt RH.
(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
(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 B1900, B1901, B1902 or B1903 is not output.
HINT:
Codes other than DTC B1900, B1901, B1902 and B1903 may
be output at this time, but they are not related to this check.
NG
Replace front seat outer belt RH
(see page
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
HINT:
Perform the simulation method by selecting the check mode with the hand–held tester (see page
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
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–1469
1663
DTC
B1905/74 Short in P/T Squib (LH) Circuit
DTC
B1906/74 Open in P/T Squib (LH) Circuit
DTC
B1907/74 Short in P/T Squib (LH) Circuit (to Ground)
DTC
B1908/74 Short in P/T Squib (LH) Circuit (to B+)
CIRCUIT DESCRIPTION
The P/T squib LH circuit consists of the airbag sensor assembly and the front seat outer belt LH.
The circuit instructs the SRS to deploy when deployment conditions are met.
These DTCs are recorded when a malfunction is detected in the P/T squib LH circuit.
DTC No.
DTC Detection Condition
Trouble Area
B1905/74
The airbag sensor assembly receives a line short circuit
signal 5 times in the P/T squib LH circuit during primary
check.
P/T squib LH malfunction
Airbag sensor assembly malfunction
Front seat outer belt LH (P/T squib LH)
Airbag sensor assembly
Floor wire No. 2
B1906/74
The airbag sensor assembly receives an open circuit sig-
nal in the P/T squib LH circuit for 2 seconds.
P/T squib LH malfunction
Airbag sensor assembly malfunction
Front seat outer belt LH (P/T squib LH)
Airbag sensor assembly
Floor wire No. 2
B1907/74
The airbag sensor assembly receives a short circuit to
ground signal in the P/T squib LH circuit for 0.5 seconds.
P/T squib LH malfunction
Airbag sensor assembly malfunction
Front seat outer belt LH (P/T squib LH)
Airbag sensor assembly
Floor wire No. 2
B1908/74
The airbag sensor assembly receives a short to B+ circuit
signal in the P/T squib LH circuit for 0.5 seconds.
P/T squib LH malfunction
Airbag sensor assembly malfunction
Front seat outer belt LH (P/T squib LH)
Airbag sensor assembly
Floor wire No. 2
DIDHR–01
H01454
P10
P/T Squib LH
Airbag Sensor Assembly
A19
5
PL+
Y–B
1
2
Y
A19
6
PL–
DI–1470
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
1664
WIRING DIAGRAM
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