2001 TOYOTA AVALON Service Repair Manual

H01021AB0118AB0119R13006H01067H01173
"u
E1
TcACC ON
or Airbag
Sensor
Assembly Squib (RH)
DTC B0112/41 DLC1
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-401
557 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 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 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. If the malfunctioning part can not be
detected by the simulation method, replace all SRS components including the wire harness.

H01019AB0119
H09670H12951
Squib (RH)Airbag
Sensor
Assembly
(-)(+)FR+
ON
DI-402
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
558 Author
: Date
:
2001 AVALON (RM808U)
DTC B0113/42 Short in Side Squib (RH) Circuit (to B+)
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 B0113/42 is recorded when a B+ short is detected in the side squib (RH) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0113/42

Short circuit in side squib (RH) wire harness (to B+)

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-349).
2 Check side squib (RH) circuit.
CHECK:
(a) Turn the ignition switch to ON.
(b) For the connector (on the airbag sensor assembly side)
between the side airbag assembly (RH) and the airbag
sensor assembly, measure the voltage between FR+ and
body ground.
OK:
Voltage: 0 V
NG Repair or replace harness or connector be-
tween side airbag assembly (RH) and airbag
sensor assembly.
OK
DI6MV-01

AB0118
R13006AB0119
H01020
H01068H09671
H12952
Squib (RH)Airbag
Sensor
Assembly
FR+
E1 FR-
TcACC
or
DTC B0113/42 DLC1
ON "u
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-403
559 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 front side airbag assembly side) between
the front side airbag assembly (RH) and the airbag sensor
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 B0113/42 is not output.
HINT:
Codes other than code B0113/42 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK

AB0118
R13006AB0119H01021
H01068H01176
"u
E1
Tc ACC ON
orAirbag
Sensor
Assembly Squib (RH)
DTC B0113/42 DLC1
DI-404
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
560 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 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 B0113/42 is not output.
HINT:
Codes other than code B0113/42 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. If the malfunctioning part can not be
detected by the simulation method, replace all SRS components including the wire harness.

H01454
Side Squib (LH)Airbag Sensor Assembly
FL+
FL- Y-R
Y-G 1
26 5
C5
C5
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-405
561 Author
: Date
:
2001 AVALON (RM808U)
DTC B0115/47 Short in Side Squib (LH) Circuit
CIRCUIT DESCRIPTION
The side squib (LH) circuit consists of the airbag sensor assembly and side airbag assembly (LH).
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 B0115/47 is recorded when a short is detected in the side squib (LH) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0115/47

Short circuit between FL+ wire harness and FL- wire har-
ness of squib

Side squib (LH) malfunction

Airbag sensor assembly malfunction
Side airbag assembly (LH)

Airbag sensor assembly

Wire harness
WIRING DIAGRAM
DI6MW-01

H01019H09668H12953
Squib (LH)Airbag
Sensor
Assembly
FL+
(-) (+) FL-
DI-406
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
562 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Prepare for inspection (See step 1 on page DI-475).
2 Check side squib (LH) 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 (LH)
(See page DI-349).
CHECK:
For the connector (on the side airbag assembly side) between
the side airbag assembly (LH) and the airbag sensor assembly,
measure the resistance between FL+ and FL-.
OK:
Resistance: 1 MW or Higher
NG Repair or replace harness or connector be-
tween side airbag assembly (LH) and airbag
sensor assembly.
OK

AB0118
R13006AB0119H01017
H01073H07483
Squib (LH)Airbag
Sensor
Assembly
E1 TcACC
or
DTC B0115/47
ON " u
DLC1
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-407
563 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 B0115/47 is not output.
HINT:
Codes other than code B0115/47 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK

H01018AB0118AB0119R13006H01073H01190
"u
E1
Tc ACC ON
orAirbag
Sensor
Assembly Squib (LH)
DTC B0115/47 DLC1
DI-408
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
564 Author
: Date
:
2001 AVALON (RM808U)
4 Check side squib (LH).
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 (LH) 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 B0115/47 is not output.
HINT:
Codes other than code B0115/47 may be output at this time, but
they are not relevant to this check.
NG Replace side airbag assembly (LH).
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.