Toyota Sequoia (2005). Manual — part 345
H03355
G27651
H23624
Front Airbag
Sensor LH
Airbag
Sensor
Assembly
–SL
+SL
A
B
D
E
F
C
A20
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–1175
1369
6
Check front airbag sensor LH circuit (short to ground).
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 Connection
Condition
Specified Condition
A20–30 (+SL) –
Body ground
Always
1 M
Ω
or higher
A20–28 (–SL) –
Body ground
Always
1 M
Ω
or higher
NG
Go to step 11.
OK
H02757
H10600
H40103
W02044
H23363
DTC B1610/13
DLC3
TC
CG
Airbag
Sensor
Assembly
Front Airbag
Sensor RH
DTC B1615/14
DC
DI–1176
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
1370
7
Check front airbag sensor LH.
PREPARATION:
(a)
Connect the connectors to the airbag sensor assembly.
(b)
Interchange the front airbag sensor RH with LH and con-
nect 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 B1615/14 is output.
A
DTC B1610/13 is output.
B
DTC B1610/13 and B1615/14 are not
output.
C
HINT:
Codes other than DTC B1610/13 and B1615/14 may be output
at this time, but they are not related to this check.
A
Replace airbag sensor assembly
(see page
).
B
Replace front airbag sensor 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
H23631
H03352
H23983
H24011
Airbag
Sensor
Assembly
Front Airbag
Sensor LH
Engine Room Main Wire
A
B
C
D
E
F
Service Wire
Cowl Wire
+SL
–SL
A11
IA3
+SL
–SL
H03354
H23983
H24012
Airbag
Sensor
Assembly
+SL
–SL
A
B
D
E
C
F
Front Airbag
Sensor LH
Cowl Wire
Engine Room Main Wire
IA3
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–1177
1371
8
Check engine room main wire (open).
PREPARATION:
Disconnect the engine room main wire connector from the cowl
wire.
HINT:
The service wire has already been inserted into connector ”E”.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester Connection
Condition
Specified Condition
IA3–1 (+SL) –
IA3–2 (–SL)
Always
Below 1
Ω
NG
Repair or replace engine room main wire.
OK
Repair or replace cowl wire.
9
Check engine room main wire (short).
PREPARATION:
Disconnect the engine room main wire connector from the cowl
wire.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester Connection
Condition
Specified Condition
IA3–1 (+SL) –
IA3–2 (–SL)
Always
1 M
Ω
or higher
NG
Repair or replace engine room main wire.
OK
Repair or replace cowl wire.
H03354
H23983
H24012
Airbag
Sensor
Assembly
+SL
–SL
A
B
D
E
C
F
Front Airbag
Sensor LH
Cowl Wire
Engine Room Main Wire
IA3
DI–1178
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
1372
10
Check engine room main wire (short to B+).
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)
Disconnect the engine room main wire connector from the
cowl wire.
(d)
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 Connection
Condition
Specified Condition
IA3–1 (+SL) –
Body ground
Ignition switch ON
Below 1 V
IA3–2 (–SL) –
Body ground
Ignition switch ON
Below 1 V
NG
Repair or replace engine room main wire.
OK
Repair or replace cowl wire.
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