TOYOTA AVENSIS 2005 Service Repair Manual


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

\f



 H42231
Airbag
Sensor
Assy
Center
LSP+ LSP±
Floor Wire
Seat Position
Airbag Sensor A
B
C
D
\f



\f


\bH42468
DLC3
CGTC
Airbag
Sensor
Assy
Center
Seat
Position
Airbag
Sensor
DTC B1153/25
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1307
AVENSIS REPAIR MANUAL (RM1018E)
6CHECK 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 LSP+ and LSP± of the connector ºBº.
OK:
Resistance: 1 M
or Higher
NGREPAIR OR REPLACE FLOOR WIRE
OK
7CHECK SEAT POSITION AIR BAG SENSOR
(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 connectors to the seat position airbag sensor and the airbag sensor assy center.
(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 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 8
OK
USE SIMULATION METHOD TO CHECK




\b


H42468
DLC3
CGTC
Airbag
Sensor
Assy
Center
Seat
Position
Airbag
Sensor
DTC B1153/25
05±1308
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
8REPLACE SEAT POSITION AIRBAG SENSOR
(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)Replace the seat position airbag sensor (See page 60±70).
9RECHECK DTC
(a)Connect the negative (±) terminal cable to the battery, and wait for at least 2 seconds.
(b)Turn the ignition switch to the ON position, and wait for at least 10 seconds.
(c)Clear the stored DTCs in the memory (See page
05±1184).
(d) Turn the ignition switch to the LOCK position.
(e) Turn the ignition switch to the ON position, and wait for at least 10 seconds.
(f)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 REPLACE AIR BAG SENSOR ASSY CENTER
OK
USE SIMULATION METHOD TO CHECK


 H43089
Airbag
Sensor
Assy
Center Seat Position
Airbag Sensor
RSP±
RSP+
Floor Wire No. 2
A
B C D
RSP± RSP+
H41028
Airbag
Sensor
Assy
Center
Seat Position
Airbag SensorRSP±
RSP+Floor Wire No. 2
A
B C D
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05±1309
AVENSIS REPAIR MANUAL (RM1018E)
10 CHECK FLOOR WIRE NO.2(OPEN)
(a) Disconnect the connectors from the airbag sensor assy
center and the seat position airbag sensor.
(b) Using a service wire, connect between RSP+ and RSP±
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 RSP+ and RSP± of the
connector ºBº.
OK:
Resistance: Below 1

NG REPAIR OR REPLACE FLOOR WIRE NO.2
OK
11 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 RSP+ and RSP± of the connector ºBº.
OK:
Voltage: Below 1 V
NG REPAIR OR REPLACE FLOOR WIRE NO.2
OK

H41028
Airbag
Sensor
Assy
Center
Seat Position
Airbag Sensor RSP±
RSP+Floor Wire No. 2
A
B
C
D
H42477
DLC3
CGTC DTC B1153/25
Airbag
Sensor
Assy
Center
Seat
Position
Airbag
Sensor
05±1310
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
12CHECK 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 RSP+ and RSP± of the connector ºBº.
OK:
Resistance: 1 M
or Higher
NGREPAIR OR REPLACE FLOOR WIRE NO.2
OK
13CHECK SEAT POSITION AIR BAG SENSOR
(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 connectors to the seat position airbag sensor and the airbag sensor assy center.
(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 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 14
OK
USE SIMULATION METHOD TO CHECK

H42477
DLC3
CGTC DTC B1153/25
Airbag
Sensor
Assy
Center
Seat
Position
Airbag
Sensor
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1311
AVENSIS REPAIR MANUAL (RM1018E)
14REPLACE SEAT POSITION AIR BAG SENSOR
(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)Replace the seat position airbag sensor (See page 60±70).
15 RECHECK DTC
(a) Connect the negative (±) terminal cable to the battery,
and wait for at least 2 seconds.
(b) Turn the ignition switch to the ON position, and wait for at least 10 seconds.
(c)Clear the stored DTCs in the memory (See page
05±1184).
(d) Turn the ignition switch to the LOCK position.
(e) Turn the ignition switch to the ON position, and wait for at least 10 seconds.
(f)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 REPLACE AIR BAG SENSOR ASSY CENTER
OK
USE SIMULATION METHOD TO CHECK

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






 \b 




 \bH42119
Airbag
Sensor
Front LH Airbag
Sensor
Assy
Center
DLC3
CG TC DTC B1149/37
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1299
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 B1149/37 is not output.
HINT:
Codes other than code B1149/37 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 airbag sensor front LH.
OK:
The connectors are connected.
NG CONNECT CONNECTORS
OK




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