2005 TOYOTA AVENSIS Circuit

H42515
Side Airbag Sensor Assy LHAirbag Sensor Assy Center C15
Airbag Sensor Rear LH
L±B
1S14
BCL±
BBL±
22
1
S14 S14 GR±R
BCL+ BBL+S143
4LG±B
GR±LBBL±
BBL+ A2618
A2616
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05±1317
AVENSIS REPAIR MANUAL (RM1018E)
DTC B1155/39 AIRBAG SENSOR REAR (LH)
MALFUNCTION
CIRCUIT DESCRIPTION
The airbag sensor rear LH consists of the diagnosis circuit and the lateral deceleration sensor, etc.
If the airbag sensor assy center receives the signal from the lateral deceleration sensor signal in the airbag
sensor rear LH, it judges whether or not the SRS should be activated.
DTC B1155/39 is recorded when a malfunction in the airbag sensor rear LH is detected.
DTC No.DTC Detection ConditionTrouble Area
B1155/39

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

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

Open circuit in BCL+ wire harness or BCL± wire harness
of airbag sensor rear LH

Airbag sensor rear LH malfunction

Side airbag sensor assy LH malfunction

Airbag sensor assy center malfunction

Airbag sensor rear LH

Side airbag sensor assy LH

Airbag sensor assy center

Floor wire
HINT:
DTC B1155/39 is indicated only for the vehicle equipped with the curtain shield airbag.
WIRING DIAGRAM
056MK±04

H42515
C16
Airbag Sensor Rear RHSide Airbag Sensor Assy RH
Airbag Sensor Assy Center
BBR±
BBR+ P
GR BCR±
BCR+BBR±
BBR+ LG
L 1
2S1523
4 1
17 15
A28
S15S15
S15A28 05±1312
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC B1154/38 AIRBAG SENSOR REAR (RH)
MALFUNCTION
CIRCUIT DESCRIPTION
The airbag sensor rear RH consists of the diagnosis circuit and the lateral deceleration sensor, etc.
If the airbag sensor assy center receives the signal from the lateral deceleration sensor signal in the airbag
sensor rear RH, it judges whether or not the SRS should be activated.
DTC B1154/38 is recorded when a malfunction in the airbag sensor rear RH is detected.
DTC No.DTC Detection ConditionTrouble Area
B1154/38

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

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

Open circuit in BCR+ wire harness or BCR± wire harness of
airbag sensor rear RH

Airbag sensor rear RH malfunction

Side airbag sensor assy RH malfunction

Airbag sensor assy center malfunction

Airbag sensor rear RH

Side airbag sensor assy RH

Airbag sensor assy center

Floor wire No.2
HINT:
DTC B1154/38 is indicated only for the vehicle equipped with the curtain shield airbag.
WIRING DIAGRAM
05A6E±03

H42514
B12
Buckle SW (Driver's Seat)Airbag Sensor Assy Center
Seat Position
Airbag Sensor2
4L±B
GR±B
*1: LHD
*2: RHDLSP+
RSP+(*1)
(*2) 4
A261
A28
LSP±
RSP±(*1)
(*2) A26 A2832 (*1) (*2)
(*1) (*2) 05±1304
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC B1153/25 SEAT POSITION AIRBAG SENSOR
MALFUNCTION
CIRCUIT DESCRIPTION
The seat position airbag sensor circuits consists of the airbag sensor assy center and the seat position airbag
sensor.
DTC B1153/25 is recorded when a malfunction is detected in the seat position airbag sensor circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1153/25

Open circuit in LSP+ (RSP+) wire harness or LSP± (RSP±)
wire harness of seat position airbag sensor

Short circuit in seat position airbag sensor wire harness
(to ground)

Short circuit in seat position airbag sensor wire harness
(to B+)

Seat position airbag sensor malfunction

Airbag sensor assy center malfunction

Seat position airbag sensor

Airbag sensor assy center

Floor wire (LHD)

Floor wire No.2 (RHD)
WIRING DIAGRAM
05C62±01

H17182
Airbag Sensor Assy Center
SL+
SL± A27
A2715
26 IO3
4 3
2
1 SL+
SL± A9
Airbag Sensor Front LH
W±R
BR IE73
4
IO3 IE7
(*3) (*4)(*3) (*4)
BR (*2) Y±R (*1)
*1: LHD 1CD±FTV
*2: Except LHD 1CD±FTV W±R
*3: LHD
*4: RHD 05±1298
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC B1149/37 FRONT AIRBAG SENSOR (LH)
MALFUNCTION
CIRCUIT DESCRIPTION
The airbag sensor front LH circuit consists of the diagnosis circuit and the frontal deceleration sensor, etc.
If the airbag sensor assy center receives signals from the frontal deceleration sensor, it judges whether or
not the SRS should be activated.
DTC B1149/37 is recorded when malfunction is detected in the airbag sensor front LH circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1149/37

Open circuit in SL+ wire harness or SL± wire harness of air-
bag sensor front LH

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

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

Airbag sensor front LH malfunction

Airbag sensor assy center malfunction

Airbag sensor front LH

Airbag sensor assy center

Instrument panel wire

Engine room main wire
WIRING DIAGRAM
05C61±01




H42523
Airbag
Sensor
Assy
Center
Airbag Sensor
Front LH
Service Wire
SL+
SL±A
B
C
D E F


H42510
Airbag
Sensor
Assy
Center
Airbag Sensor
Front LH
SL+
SL±A
B C
D E F
05±1300
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
3 CHECK FRONT AIRBAG SENSOR (LH) CIRCUIT (OPEN)
(a) Disconnect the connectors from the airbag sensor assy
center and the airbag sensor front LH.
(b) Using a service wire, connect SL+ and SL± of the connec-
tor ºEº.
NOTICE:
Do not forcibly insert a service wire into the terminal of the
connector when connecting.
(c) Measure the resistance between SL+ and SL± of the con-
necter ºBº.
OK:
Resistance: Below 1

NG Go to step 7
OK
4 CHECK FRONT AIRBAG SENSOR (LH) CIRCUIT (TO B+)
(a) Disconnect the service wire from the connector ºEº.
(b) Connect the negative (±) terminal cable to the battery,
and turn the ignition switch to the ON position.
(c) Measure the voltage between the body ground and each
of SL+ and SL± of the connector ºBº.
OK:
Voltage: Below 1 V
NG Go to step 8
OK




H42510
Airbag
Sensor
Assy
Center
Airbag Sensor
Front LH
SL+SL± A
B
C
D
E
F

\b\b


  

\b\b


  H42120
Airbag
Sensor
Assy
CenterAirbag
Front
RH Sensor
DLC3
CGTC DTC B1148/36
DTC B1149/37
DC
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1301
AVENSIS REPAIR MANUAL (RM1018E)
5CHECK FRONT AIRBAG SENSOR (LH) 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 SL+ and SL± of the connector ºBº.
OK:
Resistance: 1 M or Higher
NGGo to step 9
OK
6CHECK AIR BAG SENSOR FRONT LH
(a)Connect the connector to the airbag sensor assy center.
(b)Interchange the airbag front sensor RH 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 SENSOR ASSY CENTER
NG:B REPLACE AIR BAG SENSOR FRONT LH
OK
USE SIMULATION METHOD TO CHECK

H17182
Airbag Sensor Assy Center
SR+
SR± A27
A279
20 IO3
2 1
G
R 2
1 SR+
SR± A10
Airbag Front RH Sensor
G
R IE71
2
IO3 IE7
*1: LHD
*2: RHD(*1) (*2)(*1) (*2) 05±1292
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC B1148/36 FRONT AIRBAG SENSOR (RH)
MALFUNCTION
CIRCUIT DESCRIPTION
The airbag front RH sensor circuit consists of the diagnosis circuit and the frontal deceleration sensor, etc.
If the airbag sensor assy center receives signals from the frontal deceleration sensor, it judges whether or
not the SRS should be activated.
DTC B1148/36 is recorded when a malfunction in the airbag front RH sensor is detected.
DTC No.DTC Detecting ConditionTrouble Area
B1148/36

Open circuit in SR+ wire harness or SR± wire harness of
front airbag sensor RH

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

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

Airbag front RH sensor malfunction

Airbag sensor assy center malfunction

Airbag front RH sensor

Airbag sensor assy center

Instrument panel wire

Engine room main wire
WIRING DIAGRAM
05C60±01




H42523
Airbag
Sensor
Assy
CenterAirbag
Front
RH Sensor
Service Wire
SR+
SR±
A
B
C
D E F


H42510
Airbag
Sensor
Assy
CenterAirbag
Front
RH Sensor
SR+
SR±
A
B
C
D E F
05±1294
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
3 CHECK FRONT AIRBAG SENSOR (RH) CIRCUIT (OPEN)
(a) Disconnect the connectors from the airbag sensor assy
center and the airbag front RH sensor.
(b) Using a service wire, connect SR+ and SR± of the con-
nector ºEº.
NOTICE:
Do not forcibly insert a service wire into the terminal of the
connector when connecting.
(c) Measure the resistance between SR+ and SR± of the
connector ºBº.
OK:
Resistance: Below 1

NG Go to step 7
OK
4 CHECK FRONT AIRBAG SENSOR (RH) CIRCUIT (TO B+)
(a) Disconnect the service wire from the connector ºEº.
(b) Connect the negative (±) terminal cable to the battery,
and turn the ignition switch to the ON position.
(c) Measure the voltage between the body ground and each
of SR+ and SR± of the connector ºBº.
OK:
Voltage: Below 1 V
NG Go to step 8
OK