Page 1306 of 5135
H42513
B9
Buckle SW (Driver's Seat)
Buckle SW
3
1G±Y
W±BAirbag Sensor Assy Center
LBE+
LBE± 19
2 A26
A26 05±1254
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC B0126/27 SEAT BELT BUCKLE SWITCH (LH)
MALFUNCTION
DTC B0127/27 SEAT BELT BUCKLE SWITCH (LH)
MALFUNCTION
CIRCUIT DESCRIPTION
The seat belt buckle switch LH circuit consists of the airbag sensor assy center and the front seat inner belt
assy LH (seat belt buckle switch LH).
DTC B0126/27 or B0127/27 is recorded when a malfunction is detected in the seat belt buckle switch LH
circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0126/B0127/
27
Short circuit in seat belt buckle switch LH wire harness (to
ground)
Short circuit in seat belt buckle switch LH wire harness (to
B+)
Front seat inner belt assy LH malfunction
Airbag sensor assy center malfunction
Front seat inner belt assy LH (Seat belt buckle switch LH)
Airbag sensor assy center
Floor wire
HINT:
DTC B0126/27 or B0127/27 is indicated only for the LHD vehicle.
WIRING DIAGRAM
056M6±03
Page 1310 of 5135
H42513
RBE+
RBE± G±Y
W±B 3
1 B9
Buckle SW (Driver's Seat)
Buckle SWAirbag Sensor Assy Center
14
A28
3
A28 05±1250
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC B0121/26 SEAT BELT BUCKLE SWITCH (RH)
MALFUNCTION
DTC B0122/26 SEAT BELT BUCKLE SWITCH (RH)
MALFUNCTION
CIRCUIT DESCRIPTION
The seat belt buckle switch RH circuit consists of the airbag sensor assy center and the front seat inner belt
assy RH (seat belt buckle switch RH).
DTC B0121/26 or B0122/26 is recorded when a malfunction is detected in the seat belt buckle switch RH
circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0121/B0122/
26
Short circuit in seat belt buckle switch RH wire harness (to
ground)
Short circuit in seat belt buckle switch RH wire harness (to
B+)
Seat belt buckle switch RH malfunction
Airbag sensor assy center
Front seat inner belt assy RH (Seat belt buckle switch RH)
Airbag sensor assy center
Floor wire No.2
HINT:
DTC B0121/26 or B0122/26 is indicated only for the RHD vehicle.
WIRING DIAGRAM
056M5±03
Page 1314 of 5135
\b\bH42853
Side Squib LHAirbag
Sensor
Assy
Center
SFL±
SFL+Floor Wire
A
B
C
D
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1247
AVENSIS REPAIR MANUAL (RM1018E)
DTC B0118/46 SHORT IN SIDE SQUIB (LH) CIRCUIT (TO
B+)
CIRCUIT DESCRIPTION
The side squib LH circuit consists of the airbag sensor assy center and the\
separate type front seat back
assy (side squib LH).
This circuit actuates the SRS to deploy when the SRS deployment conditio\
ns are fulfilled.
DTC B0118/46 is recorded when a short to B+ is detected in the side squib LH ci\
rcuit.
DTC No.DTC Detecting ConditionTrouble Area
B0118/46
Short circuit in side squib LH wire harness (to B+)
Side squib LH malfunction
Airbag sensor assy center malfunctionSeparate type front seat back assy (Side squib LH)
Airbag sensor assy center
Floor wire
WIRING DIAGRAM
See page 05±1238.
INSPECTION PROCEDURE
1 CHECK FLOOR WIRE(SIDE 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 separate type front seat back assy (side
squib 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 SFL+ of the connector ºCº.
OK:
Voltage: Below 1 V
NG REPAIR OR REPLACE FLOOR WIRE
OK
054LY±06
Page 1317 of 5135
\b\bH42853
Airbag
Sensor
Assy
Center
SFL±
SFL+
Side Squib LH
Floor Wire
A
B
C
D
05±1244
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC B0117/45 SHORT IN SIDE SQUIB (LH) CIRCUIT (TO GROUND)
CIRCUIT DESCRIPTION
The side squib LH circuit consists of the airbag sensor assy center and the\
separate type front seat back
assy (side squib LH).
This circuit actuates the SRS to deploy when the SRS deployment conditio\
ns are fulfilled.
DTC B0117/45 is recorded when a short to ground is detected in the side squib L\
H circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0117/45
Short circuit in side squib LH wire harness (to ground)
Side squib LH malfunction
Airbag sensor assy center malfunctionSeparate type front seat back assy (Side squib LH)
Airbag sensor assy center
Floor wire
WIRING DIAGRAM
See page 05±1238.
INSPECTION PROCEDURE
1 CHECK FLOOR WIRE(SIDE 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 separate type front seat back assy (side
squib LH).
(d) Measure the resistance between the body ground and
SFL+ of the connector ºCº.
OK:
Resistance: 1 M or Higher
NG REPAIR OR REPLACE FLOOR WIRE
OK
054LX±06
Page 1320 of 5135
\b\bH42853
Side Squib LHAirbag
Sensor
Assy
Center
SFL+SFL±Floor Wire
B
DC A
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1241
AVENSIS REPAIR MANUAL (RM1018E)
DTCB0116/48OPEN IN SIDE SQUIB (LH) CIRCUIT
CIRCUIT DESCRIPTION
The side squib LH circuit consists of the airbag sensor assy center and the\
separate type front seat back
assy (side squib LH).
This circuit the SRS to deploy when the SRS deployment conditions are fu\
lfilled.
DTC B0116/48 is recorded when an open circuit is detected in the side squib LH \
circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0116/48
Open circuit in SFL+ wire harness or SFL± wire harness of
side squib LH
Side squib LH malfunction
Airbag sensor assy center malfunctionSeparate type front seat back assy (Side squib LH)
Airbag sensor assy center
Floor wire
WIRING DIAGRAM
See page 05±1238.
INSPECTION PROCEDURE
1 CHECK FLOOR WIRE(SIDE 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 separate type front seat back assy (side
squib LH).
(d) Measure the resistance between SFL+ and SFL± of the connector ºCº.
OK:
Resistance: Below 1
NG REPAIR OR REPLACE FLOOR WIRE
OK
056M4±03
Page 1323 of 5135
\b
H41465
Curtain Shield
Squib RH Airbag
Sensor
Assy
Center
Floor Wire No.2
A
B
C
D
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1325
AVENSIS REPAIR MANUAL (RM1018E)
DTCB1161/84OPEN IN CURTAIN SHIELD SQUIB (RH)
CIRCUIT
CIRCUIT DESCRIPTION
The curtain shield squib RH circuit consists of the airbag sensor assy cent\
er and the curtain shield airbag
assy RH.
This circuit actuates the SRS to deploy when the SRS deployment conditio\
ns are fulfilled.
DTC B1161/84 is recorded when an open circuit is detected in the curtain shiel\
d squib RH circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1161/84
Open circuit in ICR+ wire harness or ICR± wire harness of
curtain shield squib RH
Curtain shield squib RH malfunction
Airbag sensor assy center malfunctionCurtain shield airbag assy RH (Curtain shield squib RH)
Airbag sensor assy center
Floor wire No.2
HINT:
DTC B1161/84 is indicated only for the vehicle equipped with the curtain shiel\
d airbag.
WIRING DIAGRAM
See page 05±1322.
INSPECTION PROCEDURE
1 CHECK FLOOR WIRE NO.2(CURTAIN SHIELD SQUIB RH 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 curtain shield airbag assy RH.
(d) Measure the resistance between ICR+ and ICR± of the connector ºCº.
OK:
Resistance: Below 1
NG REPAIR OR REPLACE FLOOR WIRE NO.2
OK
056MM±03
Page 1326 of 5135
H01454
Airbag Sensor Assy Center
C18
Curtain Shield Squib RH
8
A28 ICR+ Y±V
7
A28ICR± Y±R 1
2(*1)
(*1)
*1: w/ Curtain Shield Airbag 05±1322
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC B1160/83 SHORT IN CURTAIN SHIELD SQUIB (RH)
CIRCUIT
CIRCUIT DESCRIPTION
The curtain shield squib RH circuit consists of the airbag sensor assy center and the curtain shield airbag
assy RH.
This circuit actuates the SRS to deploy when the SRS deployment conditions are fulfilled.
DTC B1160/83 is recorded when a short circuit is detected in the curtain shield squib RH circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1160/83
Short circuit between ICR+ wire harness and ICR± wire har-
ness of curtain shield squib RH
Curtain shield squib RH malfunction
Airbag sensor assy center malfunctionCurtain shield airbag assy RH (Curtain shield squib RH)
Airbag sensor assy center
Floor wire No.2
HINT:
DTC B1160/83 is indicated only for the vehicle equipped with the curtain shield airbag.
WIRING DIAGRAM
056ML±03
Page 1327 of 5135
\b
H41465
Curtain Shield
Squib RH Airbag
Sensor
Assy
Center
Floor Wire No.2
A
B
C
D
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1323
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1CHECK CONNECTOR
(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)Disconnect the connectors from the airbag sensor assy center and the curtain shiel\
d airbag assy RH.
(d)Check that the floor wire No.2 connector (on the curtain shield airbag assy RH sid\
e) is not damaged.
OK:
The lock button is not disengaged, or the claw of the lock is not deform\
ed or damaged.
NGREPAIR OR REPLACE FLOOR WIRE NO.2
OK
2CHECK FLOOR WIRE NO.2(CURTAIN SHIELD SQUIB RH CIRCUIT)
(a)Release the activation prevention mechanism built in the connector ºBº (See page 05±1184).
(b) Measure the resistance between ICR+ and ICR± of the connector ºCº.
OK:
Resistance: 1 M or Higher
NG REPAIR OR REPLACE FLOOR WIRE NO.2
OK