2005 TOYOTA AVENSIS Circuit




H42510
Airbag
Sensor
Assy
CenterAirbag
Front
RH Sensor
SR+SR±
A
B
C
D
E
F

\b\b


  H42118
Airbag
Sensor
Assy
CenterAirbag
Sensor
Front LH
DLC3
CG TC DTC B1148/36
DTC B1149/37
C
D
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1295
AVENSIS REPAIR MANUAL (RM1018E)
5CHECK FRONT AIRBAG SENSOR (RH) CIRCUIT (TO GROUND)
(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)Measure the resistance between the body ground and each of SR+ and SR± of the connector ºBº.
OK:
Resistance: 1 M or Higher
NGGo to step 9
OK
6CHECK AIR BAG FRONT RH SENSOR
(a)Connect the connector to the airbag sensor assy center.
(b)Interchange the airbag front RH sensor with the airbag sensor front LH and connect the connectors to them.
(c)Connect the negative (±) terminal cable to the battery, and wait for at least 2 seconds.
(d)Turn the ignition switch to the ON position, and wait for at least 10 seconds.
(e)Clear the stored DTCs in the memory (See page 05±1184).
(f) Turn the ignition switch to the LOCK position.
(g) Turn the ignition switch to the ON position, and wait for at
least 10 seconds.
(h)Check the DTCs (See page 05±1184). OK:
A: DTC B1148/36 is not output.
B: DTC B1149/37 is not output.
NG:A REPLACE AIR BAG FRONT RH SENSOR
NG:B REPLACE AIR BAG SENSOR ASSY CENTER
OK
USE SIMULATION METHOD TO CHECK

H42521
Side Airbag Sensor Assy LH
Airbag Sensor Assy Center
*1: w/ Curtain Shield Airbag
*2: w/o Curtain Shield AirbagBBL+
BBL± BBL+
BCL±A26 2 4
1 3(*2) (*1)
BBL± BCL+S14 (*1)
(*2)
(*1)
(*2)16
S14
S14S14
(*2) (*1)A2618 GR±L
LG±B 05±1288
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC B1141/33 SIDE AIRBAG SENSOR ASSY (LH)
MALFUNCTION
CIRCUIT DESCRIPTION
The side airbag sensor assy LH consists of the diagnosis circuit and the lateral deceleration sensor, etc.
If the airbag sensor assy center receives signals from the lateral deceleration sensor, it judges whether or
not the SRS should be activated.
DTC B1141/33 is recorded when a malfunction in the side airbag sensor assy LH is detected.
DTC No.DTC Detecting ConditionTrouble Area
B1141/33

Short circuit in side airbag sensor assy LH wire harness
(to B+)

Short circuit in side airbag sensor assy LH wire harness
(to ground)

Open circuit in BBL+ wire harness or BBL± wire harness of
side airbag sensor assy LH

Side airbag sensor assy LH malfunction

Airbag sensor assy center malfunction

Side airbag sensor assy LH

Airbag sensor assy center

Floor wire
WIRING DIAGRAM
05C5Z±01

H42521
Side Airbag Sensor Assy RH
Airbag Sensor Assy Center
*1: w/ Curtain Shield Airbag
*2: w/o Curtain Shield AirbagBBR+
BBR± BBR+
BCR±GR
PA2817
15 S152 4
1 3(*2) (*1)
BBR± BCR+S15
S15 S15 (*1)
(*2)
(*1)
(*2)
A28
(*2) (*1) 05±1284
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC B1140/32 SIDE AIRBAG SENSOR ASSY (RH)
MALFUNCTION
CIRCUIT DESCRIPTION
The side airbag sensor assy RH consists of the diagnosis circuit and the lateral deceleration sensor, etc.
If the airbag sensor assy center receives signals from the lateral deceleration sensor, it judges whether or
not the SRS should be activated.
DTC B1140/32 is recorded when a malfunction in the side airbag sensor assy RH is detected.
DTC No.DTC Detecting ConditionTrouble Area
B1140/32

Short circuit in side airbag sensor assy RH wire harness
(to B+)

Short circuit in side airbag sensor assy RH wire harness
(to ground)

Open circuit in BBR+ wire harness or BBR± wire harness of
side airbag sensor assy RH

Side airbag sensor assy RH malfunction

Airbag sensor assy center malfunction

Side airbag sensor assy RH

Airbag sensor assy center

Floor wire No.2
WIRING DIAGRAM
05C5Y±01




H41086
DLC3
CG TC DTC B1100/31
05±1282
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTCB1100/31AIRBAG SENSOR ASSY CENTER MALFUNCTION
CIRCUIT DESCRIPTION
The airbag sensor assy center consists of the airbag sensor, the safing sensor, the drive circuit, the diagnosis
circuit and the ignition control, etc.
If the airbag sensor assy center receives signals from the airbag sensor, it judges whether or not the SRS
should be activated.
DTC B1100/31 is recorded when a malfunction in the airbag sensor assy center i\
s detected.
DTC No.DTC Detecting ConditionTrouble Area
B1100/31
Airbag sensor assy center malfunction

Half connection detection malfunction
Airbag sensor assy center

Airbag sensor assy center connector
HINT:
When a malfunction code other than code B1100/31 is displayed at the same time, first repair the malfunction
indicated by the malfunction code other than code B1100/31.
INSPECTION PROCEDURE
1CHECK DTC
(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)Connect the negative (±) terminal cable to the battery,
and wait for at least 2 seconds.
(d)Turn the ignition switch to the ON position, and wait for at least 10 seconds.
(e)Clear the stored DTCs in the memory (See page
05±1184).
(f) Turn the ignition switch to the LOCK position.
(g) Turn the ignition switch to the ON position, and wait for at least 10 seconds.
(h)Check the DTCs (See page 05±1184). OK:
DTC B1100/31 is not output.
HINT:
Codes other than code B1100/31 may be output at this time, but
they are not related to this check.
NG Go to step 2
OK
USE SIMULATION METHOD TO CHECK
05C5X±01




H40056
P/T Squib LHPL±
PL+ Airbag
Sensor
Assy
CenterFloor Wire
A
B
C
D
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1279
AVENSIS REPAIR MANUAL (RM1018E)
DTC B0138/72 SHORT IN P/T SQUIB (LH) CIRCUIT (TO B+)
CIRCUIT DESCRIPTION
The P/T squib LH circuit consists of the airbag sensor assy center and the \
front seat outer belt assy LH (seat
belt pretensioner LH).
This circuit actuates the SRS to deploy when the SRS deployment conditio\
ns are fulfilled.
DTC B0138/72 is recorded when a short to B+ is detected in the P/T squib\
LH circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0138/72

Short circuit in P/T squib LH wire harness (to B+)

P/T squib LH malfunction

Airbag sensor assy center malfunction
Front seat outer belt assy LH (P/T squib LH)

Airbag sensor assy center

Floor wire
WIRING DIAGRAM
See page 05±1270.
INSPECTION PROCEDURE
1 CHECK FLOOR WIRE(P/T SQUIB LH CIRCUIT)
(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 connectors from the airbag sensor assy center and the front seat outer belt assy LH.
(d) Connect the negative (±) terminal cable to the battery, and turn the ignition switch to the ON position.
(e) Measure the voltage between the body ground and PL+ of the connector ºCº.
OK:
Voltage: Below 1 V
NG REPAIR OR REPLACE FLOOR WIRE
OK
054M6±07




H40584
P Squib
(2nd step)Airbag
Sensor
Assy
Center
P2+
Instrument Panel Wire
A
B
C
D
05±1368
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC B1187/55 SHORT IN P SQUIB (2ND STEP) CIRCUIT (TO GROUND)
CIRCUIT DESCRIPTION
The P squib (2nd step) circuit consists of the airbag sensor assy center \
and the instrument panel passenger
airbag assy.
This circuit actuates the SRS to deploy when the SRS deployment conditio\
ns are fulfilled.
DTC B1187/55 is recorded when a short to ground is detected in the P squib (2\
nd step) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1187/55

Short circuit in P squib (2nd step) wire harness (to ground)

P squib (2nd step) malfunction

Airbag sensor assy center malfunction
Instrument panel passenger airbag assy (P squib, 2nd step)

Airbag sensor assy center

Instrument panel wire
WIRING DIAGRAM
See page 05±1362.
INSPECTION PROCEDURE
1 CHECK INSTRUMENT PANEL WIRE(P SQUIB, 2ND STEP CIRCUIT)
(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 connectors from the airbag sensor assy center and the instrument panel passenger airbag assy.
(d) Measure the resistance between the body ground and
P2+ of the connector ºCº.
OK:
Resistance: 1 M
or Higher
NG REPAIR OR REPLACE INSTRUMENT PANEL WIRE
OK
056MZ±03

\b

H40583
P Squib
(2nd step)Airbag
Sensor
Assy
Center
P2+
P2±Instrument Panel Wire
A
B
C
D
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1365
AVENSIS REPAIR MANUAL (RM1018E)
DTC B1186/58 OPEN IN P SQUIB (2ND STEP) CIRCUIT
CIRCUIT DESCRIPTION
The P squib (2nd step) circuit consists of the airbag sensor assy center \
and the instrument panel passenger
airbag assy.
This circuit actuates the SRS to deploy when the SRS deployment conditio\
ns are fulfilled.
DTC B1186/58 is recorded when an open circuit is detected in the P squib (2nd\
step) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1186/58

Open circuit in P2+ wire harness or P2± wire harness of P
squib (2nd step)

P squib (2nd step) malfunction

Airbag sensor assy center malfunction
Instrument panel passenger airbag assy (P squib, 2nd step)

Airbag sensor assy center

Instrument panel wire
WIRING DIAGRAM
See page 05±1362.
INSPECTION PROCEDURE
1 CHECK INSTRUMENT PANEL WIRE(P SQUIB, 2ND STEP CIRCUIT)
(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 connectors from the airbag sensor assy center and the instrument panel passenger airbag assy.
(d) Measure the resistance between P2+ and P2± of the con- nector ºCº.
OK:
Resistance: Below 1

NG REPAIR OR REPLACE INSTRUMENT PANEL WIRE
OK
056MY±03

H01454
A29
P Squib (2nd step)Airbag Sensor Assy Center
Y
Y±B 3
48
P2+ A27
P2± 7
A27 05±1362
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC B1185/57 SHORT IN P SQUIB (2ND STEP) CIRCUIT
CIRCUIT DESCRIPTION
The P squib (2nd step) circuit consists of the airbag sensor assy center and the instrument panel passenger
airbag assy.
This circuit actuates the SRS to deploy when the SRS deployment conditions are fulfilled.
DTC B1185/57 is recorded when a short circuit is detected in the P squib (2nd step) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1185/57

Short circuit between P2+ wire harness and P2± wire harness
of P squib (2nd step)

P squib (2nd step) malfunction

Airbag sensor assy center malfunction
Instrument panel passenger airbag assy (P squib, 2nd step)

Airbag sensor assy center

Instrument panel wire
WIRING DIAGRAM
056MX±03