Page 1329 of 5135

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
Page 1330 of 5135

\b\b\b
H42843
Airbag
Sensor
Assy
Rear LHSide
Airbag
Sensor
Assy LH
DLC3
CG TC
DTC B1155/39
05±1318
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
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 B1155/39 is not output.
HINT:
Codes other than code B1155/39 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 LH and the airbag sensor rear LH.
OK:
The connectors are connected.
NG CONNECT CONNECTORS
OK
Page 1331 of 5135

H42511
Airbag Sensor
Rear LHSide
Airbag
Sensor
Assy LH Floor Wire
BCL+
BCL±
A
B
C D
1
2
Service Wire
H42525
Airbag Sensor
Rear LHFloor Wire
Side
Airbag
Sensor
Assy LH
BCL+
BCL±
A
B C D
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05±1319
AVENSIS REPAIR MANUAL (RM1018E)
3 CHECK FLOOR WIRE(OPEN)
(a) Disconnect the connectors from the side airbag sensor
assy LH and the airbag sensor rear LH.
(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 BCL+ and BCL± of the
connector ºBº.
OK:
Resistance: Below 1
NG REPAIR OR REPLACE FLOOR WIRE
OK
4 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 BCL+ and BCL± of the connector ºBº.
OK:
Voltage: Below 1 V
NG REPAIR OR REPLACE FLOOR WIRE
OK
Page 1332 of 5135

\b\bH42525
Airbag Sensor
Rear LHFloor Wire
Side
Airbag
Sensor
Assy LH
BCL+ BCL±
A
B
C
D
\b
\b
H42842
Side
Airbag
Sensor
Assy LH
DLC3
CG TC DTC B1154/38
DTC B1155/39Airbag
Sensor
Rear RH
05±1320
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
5CHECK FLOOR WIRE(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 BCL+ and BCL± of the connector ºBº.
OK:
Resistance: 10 k or Higher
NGREPAIR OR REPLACE FLOOR WIRE
OK
6CHECK AIR BAG SENSOR REAR LH
(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 LH.
(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 LH
OK
USE SIMULATION METHOD TO CHECK
Page 1333 of 5135

\b
\bH42128
Side
Airbag
Sensor
Assy RH
DLC3
CG TC DTC B1154/38
DTC B1155/39
Airbag
Sensor
Assy
Center
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1321
AVENSIS REPAIR MANUAL (RM1018E)
7CHECK SIDE AIR BAG SENSOR ASSY LH
(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 LH
OK
USE SIMULATION METHOD TO CHECK
Page 1334 of 5135

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
Page 1335 of 5135

\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
Page 1336 of 5135

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