Page 1369 of 5135

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 malfunctionFront 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
Page 1370 of 5135

\b
H40957
P/T Squib LHDLC3 TC
CG
DTC B0138/72
Airbag
Sensor
Assy
Center
PL±
PL+
Floor Wire
Service Wire
C
D
05±1280
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
2 CHECK AIR BAG SENSOR ASSY CENTER
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (±) terminal cable from the bat- tery, and wait for at least 90seconds.
(c) Connect the connector to the airbag sensor assy center.
(d) Using a service wire, connect PL+ and PL± of the connec- tor ºCº.
NOTICE:
Do not forcibly insert a service wire into the terminal of the
connector when connecting.
(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:
DTC B0138/72 is not output.
HINT:
Codes other than code B0138/72 may be output at this time, but
they are not related to this check.
NG REPLACE AIR BAG SENSOR ASSY CENTER
OK
Page 1371 of 5135

H40064
P/T Squib LHDLC3
DTC B0138/72
CG TC Airbag
Sensor
Assy
Center
C
D
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1281
AVENSIS REPAIR MANUAL (RM1018E)
3 CHECK FRONT SEAT OUTER BELT ASSY LH(P/T SQUIB 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 front seat outer belt assy LH.
(d) Connect the negative (±) terminal cable to the battery, and wait for at least 2 seconds.
(e) Turn the ignition switch to the ON position, and wait for at least 10 seconds.
(f)Clear the stored DTCs in the memory (See page 05±1184).
(g) Turn the ignition switch to the LOCK position.
(h) Turn the ignition switch to the ON position, and wait for at least 10 seconds.
(i)Check the DTCs (See page 05±1184). OK:
DTC B0138/72 is not output.
HINT:
Codes other than code B0138/72 may be output at this time, but
they are not related to this check.
NG REPLACE FRONT SEAT OUTER BELT ASSY LH
OK
4 USE SIMULATION METHOD TO CHECK
NG Go to step 1
OK
REPLACE ALL SRS COMPONENTS INCLUDING WIRE HARNESS
Page 1372 of 5135

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 malfunctionInstrument 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
Page 1373 of 5135
\bH42251
Airbag
Sensor
Assy
Center
P2+
P2±
DLC3 DTC B1187/55
TC
CGP Squib
(2nd step)Instrument Panel Wire
SST
C
D
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1369
AVENSIS REPAIR MANUAL (RM1018E)
2CHECK AIR BAG SENSOR ASSY CENTER
(a)Connect the connector to the airbag sensor assy center.
(b)Using SST, connect P2+ and P2± of the connector ºCº.
SST09843±18040
(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 B1187/55 is not output.
HINT:
Codes other than code B1187/55 may be output at this time, but
they are not related to this check.
NG REPLACE AIR BAG SENSOR ASSY CENTER
OK
Page 1374 of 5135

\b\b\bH42150
DTC B1187/55
DLC3 Airbag
Sensor
Assy
Center
TC
P Squib
(2nd step)
CG C
D
05±1370
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
3CHECK INSTRUMENT PANEL PASSENGER AIR BAG ASSY(P SQUIB, 2ND STEP)
(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 instrument panel passen- ger airbag assy.
(d)Connect the negative (±) terminal cable to the battery, and wait for at least 2 seconds.
(e)Turn the ignition switch to the ON position, and wait for at least 10 seconds.
(f)Clear the stored DTCs in the memory (See page 05±1184).
(g) Turn the ignition switch to the LOCK position.
(h) Turn the ignition switch to the ON position, and wait for at least 10 seconds.
(i)Check the DTCs (See page 05±1184). OK:
DTC B1187/55 is not output.
HINT:
Codes other than code B1187/55 may be output at this time, but
they are not related to this check.
NG REPLACE INSTRUMENT PANEL PASSENGER AIR BAG ASSY
OK
4 USE SIMULATION METHOD TO CHECK
NG Go to step 1
OK
REPLACE ALL SRS COMPONENTS INCLUDING WIRE HARNESS
Page 1375 of 5135

\bH40583
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 malfunctionInstrument 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
Page 1376 of 5135
\bH42250
Airbag
Sensor
Assy
Center
P2+
P2±
DTC B1186/58
DLC3
TC
CGP Squib
(2nd step)
Instrument Panel Wire
SST
C
D
05±1366
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
2CHECK AIR BAG SENSOR ASSY CENTER
(a)Connect the connector to the airbag sensor assy center.
(b)Using SST, connect P2+ and P2± of the connector ºCº. SST09843±18040
(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 B1186/58 is not output.
HINT:
Codes other than code B1186/58 may be output at this time, but
they are not related to this check.
NG REPLACE AIR BAG SENSOR ASSY CENTER
OK