TOYOTA AVALON 2001 Service Repair Manual
Page 1121 of 1897
H01024AB0118AB0119R13006H01078H01205
"u
E1Tc ACC ON
or
DTC B0106/54 DLC1Airbag
Sensor
Assembly P Squib
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-385
541 Author: Date:
2001 AVALON (RM808U)
4 Check P squib.
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect negative (-) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Connect the front passenger airbag assembly connector.
(d) Connect negative (-) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
(b) Clear the DTC stored in memory (See page DI-349).
(c) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(d) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
(e) Check the DTC (See page DI-349).
OK:
DTC B0106/54 is not output.
HINT:
Codes other than code B0106/54 may be output at this time, but
they are not relevant to this check.
NG Replace front passenger airbag assembly.
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.
Page 1122 of 1897
H01227H02145H02254
P Squib
Airbag
Sensor
Assembly
(+)
(-)P+
DI-386
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
542 Author: Date:
2001 AVALON (RM808U)
DTC B0107/51 Short in P Squib Circuit (to Ground)
CIRCUIT DESCRIPTION
The P squib circuit consists of the airbag sensor assembly and front passenger airbag assembly.
It causes the SRS to deploy when the SRS deployment conditions are satisfied.
For details of the function of each component, see OPERATION on page RS-3.
DTC B0107/51 is recorded when ground short is detected in the P squib circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0107/51
Short circuit in P squib wire harness (to ground)
P squib malfunction
Airbag sensor assembly malfunctionFront passenger airbag assembly (P squib)
Airbag sensor assembly
Wire harness
WIRING DIAGRAM
See page DI-379.
INSPECTION PROCEDURE
1 Prepare for inspection (See step 1 on page DI-475).
2 Check P squib circuit.
CHECK:
For the connector (on the front passenger airbag assembly
side) between the front passenger airbag assembly and the air-
bag sensor assembly, measure the resistance between P+ and
body ground.
OK:
Resistance: 1 MW or Higher
NG Repair or replace harness or connector be-
tween front passenger airbag assembly and air-
bag sensor assembly.
OK
DI4CQ-02
Page 1123 of 1897
AB0118
R13006AB0118H01023
H01075 H02144H02255
P Squib
Airbag
Sensor
Assembly
P+
P-ACC
or
DLC1
ON " u
E1 TcDTC B0107/51
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-387
543 Author: Date:
2001 AVALON (RM808U)
3 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connector to the airbag sensor assembly.
(b) Using a service wire, connect P+ and P- of the connector
(on the front passenger airbag assembly side) between
the front passenger airbag assembly and the airbag sen-
sor assembly.
(c) Connect negative (-) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to ACC or ON and wait at least for
20 seconds.
(b) Clear the DTC stored in memory
(See step 5 on page DI-349).
(c) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(d) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
(e) Check the DTC (See page DI-349).
OK:
DTC B0107/51 is not output.
HINT:
Codes other than code B0107/51 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK
Page 1124 of 1897
AB0118
R13006AB0119H01024
H01075H01196
"u
E1Tc ACC ON
or
DTC B0107/51 DLC1Airbag
Sensor
Assembly P Squib
DI-388
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
544 Author: Date:
2001 AVALON (RM808U)
4 Check P squib.
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect negative (-) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Connect the front passenger airbag assembly connector.
(d) Connect negative (-) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
(b) Clear the DTC stored in memory
(See step 5 on page DI-349).
(c) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(d) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
(e) Check the DTC (See page DI-349).
OK:
DTC B0107/51 is not output.
HINT:
Codes other than code B0107/51 may be output at this time, but
they are not relevant to this check.
NG Replace front passenger airbag assembly.
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. If the malfunctioning part can not be
detected by the simulation method, replace all SRS components including the wire harness.
Page 1125 of 1897
H01022
H02146AB0119H04524
P SquibAirbag
Sensor
Assembly
(-) (+)P+
ON
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-389
545 Author: Date:
2001 AVALON (RM808U)
DTC B0108/52 Short in P Squib Circuit (to B+)
CIRCUIT DESCRIPTION
The P squib circuit consists of the airbag sensor assembly and front passenger airbag assembly.
It causes the SRS to deploy when the SRS deployment conditions are satisfied.
For details of the function of each component, see OPERATION on page RS-3.
DTC B0108/52 is recorded when a B+ short is detected in the P squib circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0108/52
Short circuit in P squib wire harness (to B+)
P squib malfunction
Airbag sensor assembly malfunctionFront passenger airbag assembly (P squib)
Airbag sensor assembly
Wire harness
WIRING DIAGRAM
See page DI-379.
INSPECTION PROCEDURE
1 Prepare for inspection (See step 1 on page DI-475).
2 Check P squib circuit.
CHECK:
(a) Turn the ignition switch to ON.
(b) For the connector (on the front passenger airbag assem-
bly side) between the front passenger airbag assembly
and the airbag sensor assembly, measure the voltage be-
tween the P+ and body ground.
OK:
Voltage: 0 V
NG Repair or replace harness or connector be-
tween front passenger airbag assembly and air-
bag sensor assembly.
OK
DI4CR-02
Page 1126 of 1897
AB0118
R13006AB0118H01023
H01076 H02144H02257
P Squib
Airbag
Sensor
Assembly
P+
P-ACC
or
DTC B0108/52 DLC1
ON " u
E1
Tc
DI-390
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
546 Author: Date:
2001 AVALON (RM808U)
3 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connector to the airbag sensor assembly.
(b) Using a service wire, connect P+ and P- of the connector
(on the front passenger airbag assembly side) between
the front passenger airbag assembly and the airbag sen-
sor assembly.
(c) Connect negative (-) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to ACC or ON and wait at least for
20 seconds.
(b) Clear the DTC stored in memory
(See step 5 on page DI-349).
(c) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(d) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
(e) Check the DTC (See page DI-349).
OK:
DTC B0108/52 is not output.
HINT:
Codes other than code B0108/52 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK
Page 1127 of 1897
AB0118
R13006AB0119H01024
H01076H01199
"u
E1Tc ACC ON
or
DTC B0108/52
DLC1Airbag
Sensor
Assembly P Squib
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-391
547 Author: Date:
2001 AVALON (RM808U)
4 Check P squib.
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect negative (-) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Connect the front passenger airbag assembly connector.
(d) Connect negative (-) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
(b) Clear the DTC stored in memory
(See step 5 on page DI-349).
(c) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(d) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
(e) Check the DTC (See page DI-349).
OK:
DTC B0108/52 is not output.
HINT:
Codes other than code B0108/52 may be output at this time, but
they are not relevant to this check.
NG Replace front passenger airbag assembly.
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. If the malfunctioning part can not be
detected by the simulation method, replace all SRS components including the wire harness.
Page 1128 of 1897
H01454
Side Squib (RH)Airbag Sensor Assembly
FR+
FR- Y-R
Y-G 1
21 2
C7
C7 DI-392
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
548 Author: Date:
2001 AVALON (RM808U)
DTC B0110/43 Short in Side Squib (RH) Circuit
CIRCUIT DESCRIPTION
The side squib (RH) circuit consists of the airbag sensor assembly and side airbag assembly (RH).
It causes the SRS to deploy when the SRS deployment conditions are satisfied.
For details of the function of each component, see OPERATION on page RS-3.
DTC B0110/43 is recorded when a short is detected in the side squib (RH) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0110/43
Short circuit between FR+ wire harness and FR- wire
harness of squib
Side squib (RH) malfunction
Airbag sensor assembly malfunctionSide airbag assembly (RH)
Airbag sensor assembly
Wire harness
WIRING DIAGRAM
DI6MS-01
Page 1129 of 1897
H01019H09668H12946
Squib (RH)Airbag
Sensor
Assembly
FR+
(-) (+) FR-
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-393
549 Author: Date:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Prepare for inspection (See step 1 on page DI-475).
2 Check side squib (RH) circuit.
PREPARATION:
Release the airbag activation prevention mechanism of the
connector (on the airbag sensor assembly side) between the
airbag sensor assembly and the side airbag assembly (RH)
(See page DI-349).
CHECK:
For the connector (on the side airbag assembly side) between
the side airbag assembly (RH) and the airbag sensor assembly,
measure the resistance between FR+ and FR-.
OK:
Resistance: 1 MW or Higher
NG Repair or replace harness or connector be-
tween side airbag assembly (RH) and airbag
sensor assembly.
OK
Page 1130 of 1897
AB0118
R13006AB0119H01069
H01020
H07481
Squib (RH)Airbag
Sensor
Assembly
E1
TcACC
or
DTC B0110/43
ON " u
DLC1
DI-394
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
550 Author: Date:
2001 AVALON (RM808U)
3 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connector to the airbag sensor assembly.
(b) Connect negative (-) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to ACC or ON and wait at least for
20 seconds.
(b) Clear the DTC stored in memory (See page DI-349).
(c) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(d) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
(e) Check the DTC (See page DI-349).
OK:
DTC B0110/43 is not output.
HINT:
Codes other than code B0110/43 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK