2001 TOYOTA AVALON Service Repair Manual

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

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

H01021AB0118AB0119R13006H01069H01179
"u
E1
Tc ACC ON
orAirbag
Sensor
Assembly Squib (RH)
DTC B0110/43 DLC1
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-395
551 Author
: Date
:
2001 AVALON (RM808U)
4 Check side squib (RH).
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 side airbag assembly (RH) connector.
(d) Connect negative (-) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to LOOK, and wait at least for 20
second.
(b) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
(c) Clear the DTC stored in memory (See page DI-349).
(d) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(e) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
(f) 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 side airbag assembly (RH).
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.

H01019H09668H12947
Squib (RH)Airbag
Sensor
Assembly
(-) (+)
FR+ FR-
DI-396
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
552 Author
: Date
:
2001 AVALON (RM808U)
DTC B0111/44 Open 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 B0111/44 is recorded when an open is detected in the side squib (RH) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0111/44

Open circuit in FR+ wire harness or FR- wire harness of
squib

Side squib (RH) malfunction

Airbag sensor assembly malfunction
Side airbag assembly (RH)

Airbag sensor assembly

Wire harness
WIRING DIAGRAM
See page DI-392.
INSPECTION PROCEDURE
1 Prepare for inspection (See step 1 on page DI-475).
2 Check front side squib (RH) circuit.
CHECK:
For the connector (on the front side airbag assembly side) be-
tween the front side airbag assembly (RH) and the airbag sen-
sor assembly, measure the resistance between FR+ and FR-.
OK:
Resistance: Below 1 W
NG Repair or replace harness or connector be-
tween side airbag assembly (RH) and airbag
sensor assembly.
OK
DI6MT-01

AB0118
R13006AB0119
H01020
H01070 H09671H12948
Squib (RH)Airbag
Sensor
Assembly
FR+
E1 FR-
TcACC
or
DTC B0111/44
ON " u
DLC1
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-397
553 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 FR+ and FR- of the con-
nector (on the side airbag assembly side) between the
side airbag assembly (RH) and the airbag sensor assem-
bly.
(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 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 B0111/44 is not output.
HINT:
Codes other than code B0111/44 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK

AB0118
R13006AB0119H01021
H01070H01182
"u
E1 TcACC ON
orAirbag
Sensor
Assembly Squib (RH)
DTC B0111/44 DLC1
DI-398
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
554 Author
: Date
:
2001 AVALON (RM808U)
4 Check side squib (RH).
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 side airbag assembly (RH) 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 B0111/44 is not output.
HINT:
Codes other than code B0111/44 may be output at this time, but
they are not relevant to this check.
NG Replace side airbag assembly (RH).
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.

H01019H09669H12949
Airbag
Sensor
Assembly Squib (RH)
(+)FR+
(-)
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-399
555 Author
: Date
:
2001 AVALON (RM808U)
DTC B0112/41 Short in Side Squib (RH) Circuit (to
Ground)
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 B0112/41 is recorded when ground short is detected in the side squib (RH) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0112/41

Short circuit in side squib (RH) wire harness (to ground)

Side squib (RH) malfunction

Airbag sensor assembly malfunction
Side airbag assembly (RH)

Airbag sensor assembly

Wire harness
WIRING DIAGRAM
See page DI-392.
INSPECTION PROCEDURE
1 Prepare for inspection (See step 1 on page DI-475).
2 Check side squib (RH) circuit.
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 body ground.
OK:
Resistance: 1 MW or Higher
NG Repair or replace harness or connector be-
tween side airbag assembly (RH) and airbag
sensor assembly.
OK
DI6MU-01

H01020
AB0118AB0119R13006H01067 H09671H12950
Squib (RH)Airbag
Sensor
Assembly
FR+
E1 FR-
TcACC
or
DTC B0112/41 DLC1
ON " u
DI-400
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
556 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 FR+ and FR- of the con-
nector (on the side airbag assembly side) between the
side airbag assembly (RH) and the airbag sensor assem-
bly.
(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 B0112/41 is not output.
HINT:
Codes other than code B0112/41 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK