2005 TOYOTA AVENSIS sensor

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




\b\b
H42841
Side
Airbag
Sensor
Assy RH
DLC3
CG TC DTC B1154/38Airbag
Sensor
Rear RH
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1313
AVENSIS REPAIR MANUAL (RM1018E)
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 B1154/38 is not output.
HINT:
Codes other than code B1154/38 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
2 CHECK CONNECTION OF CONNECTORS
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (±) terminal cable from the battery, and wait for at least 90 seconds.
(c) Check that the connectors are properly connected to the side airbag sensor as\
sy RH and the airbag sensor rear RH.
OK:
The connectors are connected.
NG CONNECT CONNECTORS
OK





H42511
Airbag Sensor
Rear RHFloor Wire No.2
BCR+BCR±
Side
Airbag
Sensor
Assy RH
A
B
C D
2 1
Service Wire



H42525
Floor Wire No.2
BCR+ BCR±
Airbag Sensor
Rear RH
Side
Airbag
Sensor
Assy RH
A
B C D
05±1314
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
3 CHECK FLOOR WIRE NO.2(OPEN)
(a) Disconnect the connectors from the side airbag sensor
assy RH and the airbag sensor rear RH.
(b) Using a service wire, connect 1 and 2 of the connector
ºCº.
NOTICE:
Do not forcibly insert a service wire into the terminal of the
connector when connecting.
(c) Measure the resistance between BCR+ and BCR± of the
connector ºBº.
OK:
Resistance: Below 1

NG REPAIR OR REPLACE FLOOR WIRE NO.2
OK
4 CHECK FLOOR WIRE NO.2(TO B+)
(a) Disconnect the service wire from the connector ºCº.
(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 BCR+ and BCR± of the connector ºBº.
OK:
Voltage: Below 1 V
NG REPAIR OR REPLACE FLOOR WIRE NO.2
OK

\b\bH42525
Floor Wire No.2BCR+BCR±
Airbag Sensor
Rear RH
Side
Airbag
Sensor
Assy RH
A
B
C
D




 \b

  \b
H42842
Airbag
Sensor
Rear LH
DTC B1154/38
DTC B1155/39
TC
CGSide
Airbag
Sensor
Assy RH
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1315
AVENSIS REPAIR MANUAL (RM1018E)
5CHECK FLOOR WIRE NO.2(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 BCR+ and BCR± of the connector ºBº.
OK:
Resistance: 10 k
or Higher
NGREPAIR OR REPLACE FLOOR WIRE NO.2
OK
6CHECK AIR BAG SENSOR REAR RH
(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 connector to the side airbag sensor assy RH.
(d)Interchange the airbag sensor rear RH with LH and con- nect the connectors to them.
(e)Connect the negative (±) terminal cable to the battery, and wait for at least 2 seconds.
(f)Turn the ignition switch to the ON position, and wait for at least 10 seconds.
(g)Clear the stored DTCs in the memory (See page 05±1184).
(h) Turn the ignition switch to the LOCK position.
(i) Turn the ignition switch to the ON position, and wait for at least 10 seconds.
(j)Check the DTCs (See page 05±1184). OK:
A: DTC B1154/38 is not output.
B: DTC B1155/39 is not output.
NG:A Go to step 7
NG:B REPLACE AIR BAG SENSOR REAR RH
OK
USE SIMULATION METHOD TO CHECK

\b


\b


H42126
Side
Airbag
Sensor
Assy LHDTC B1154/38
DTC B1155/39
TC
CG
Airbag
Sensor
Assy
Center
05±1316
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
7CHECK SIDE AIR BAG SENSOR ASSY RH
(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)Return the interchanged airbag sensor rear RH and LH to the original condition and connect the connectors to
them.
(d)Interchange the side airbag sensor assy RH with LH and
connect the connectors to them.
(e)Connect the negative (±) terminal cable to the battery, and wait for at least 2 seconds.
(f)Turn the ignition switch to the ON position, and wait for at
least 10 seconds.
(g)Clear the stored DTCs in the memory (See page 05±1184).
(h) Tune the ignition switch to the LOCK position.
(i) Turn the ignition switch to the ON position, and wait for at least 10 seconds.
(j)Check the DTCs (See page 05±1184). OK:
A: DTC B1154/38 is not output.
B: DTC B1155/39 is not output.
NG:A REPLACE AIR BAG SENSOR ASSY CENTER
NG:B REPLACE SIDE AIR BAG SENSOR ASSY RH
OK
USE SIMULATION METHOD TO CHECK

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



 


\bH42526
Airbag
Sensor
Assy
Center
DLC3
Seat
Position
Airbag
Sensor
CGTC DTC B1153/25
Airbag
Sensor
Assy
Center
Seat
Position
Airbag
Sensor
LHD:
RHD:
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1305
AVENSIS REPAIR MANUAL (RM1018E)
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 B1153/25 is not output.
HINT:
Codes other than code B1153/25 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
2 CHECK CONNECTION OF CONNECTORS
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (±) terminal cable from the battery, and wait for at least 90 seconds.
(c) Check that the connectors are properly connected to the airbag sensor assy center and the seat posi- tion airbag sensor.
OK:
The connectors are connected.
NG CONNECT CONNECTORS
OK
3 CHECK VEHICLE CONDITION
(a) Check the vehicle steering position. RHD Go to step 10
LHD


H43084
Airbag
Sensor
Assy
Center
Seat Position
Airbag Sensor
LSP+LSP±
Floor Wire
A
B C D
LSP+
LSP±
Service Wire





H42231
Airbag
Sensor
Assy
Center
LSP+LSP±
Floor Wire
Seat Position
Airbag SensorA
B C D
05±1306
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
4 CHECK FLOOR WIRE(OPEN)
(a) Disconnect the connectors from the airbag sensor assy
center and the seat position airbag sensor.
(b) Using a service wire, connect between LSP+ and LSP±
of the connector ºCº.
NOTICE:
Do not forcibly insert a service wire into the terminal of the
connector when connecting.
(c) Measure the resistance between LSP+ and LSP± of the
floor wire connector on the airbag sensor assy center
side.
OK:
Resistance: Below 1

NG REPAIR OR REPLACE FLOOR WIRE
OK
5 CHECK FLOOR WIRE(TO B+)
(a) Disconnect the service wire from the connector ºCº.
(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 LSP+ and LSP± of the connector ºBº.
OK:
Voltage: Below 1 V
NG REPAIR OR REPLACE FLOOR WIRE
OK