o2 sensor TOYOTA HIGHLANDER 2001 Service Repair Manual

H01016H43108H01016H43108H43139
P/T Squib LH
PL- PL+Airbag
Sensor
Assy
CenterFloor Wire No.2
A
B C D
P13
05-1310
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1500 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B0136/74 OPEN IN P/T SQUIB (LH) CIRCUIT
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 instructs the SRS to deploy when deployment conditions are met.
DTC B0136/74 is recorded when an open circuit is detected in the P/T squib LH circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0136/74

Open circuit in PL+ wire harness or PL- wire harness of
P/T squib LH

P/T squib (LH) malfunction

Airbag sensor assy center malfunction
Front seat outer belt assy LH (P/T squib LH)

Airbag sensor assy center

Floor wire No.2
WIRING DIAGRAM
see page 05-1306.
INSPECTION PROCEDURE
1 CHECK FLOOR WIRE NO.2(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) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified condition
P13-1 (PL+) -
P13-2 (PL-)AlwaysBelow 1 W
NG REPAIR OR REPLACE FLOOR WIRE NO.2
OK
0525Y-04

H01017
H10600 H01087H43107H01017
H10600 H01087H43107H43140
P/T Squib LH
DLC3
TC
CG
DTC B0136/74Airbag
Sensor
Assy
Center
PL- PL+
Floor Wire No.2
Service Wire
C D
P13
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-131 1
1501 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
2 CHECK AIR BAG SENSOR ASSY CENTER
(a) Connect the connector to the airbag sensor assy center.
(b) Using a service wire, connect P13-1 (PL+) and P13-2
(PL-) of connector ºCº.
NOTICE:

Twist the end of the service wire in order to insert it
into the connector.

Do not forcibly insert the twisted service wire into the
terminal of the connector when connecting.
(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 60 seconds.
(e) Clear the DTCs stored in memory (see page 05-1215).
(f) Turn the ignition switch to the LOCK position.
(g) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(h) Check the DTCs (see page 05-1215).
OK:
DTC B0136/74 is not output.
HINT:
Codes other than code B0136/74 may be output at this time, but
they are not related to this check.
NG REPLACE AIR BAG SENSOR ASSY CENTER
(SEE PAGE 60-53)
OK

H10600 H01018H01087H10600
H01018H01087H40060
P/T Squib LH
DLC3
CG
DTC B0136/74
TCAirbag
Sensor
Assy
Center C D
05-1312
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1502 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
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) Disconnect the service wire from connector ºCº.
(d) Connect the connector to the front seat outer belt assy
LH.
(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 60 seconds.
(g) Clear the DTCs stored in memory (see page 05-1215).
(h) Turn the ignition switch to the LOCK position.
(i) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(j) Check the DTCs (see page 05-1215).
OK:
DTC B0136/74 is not output.
HINT:
Codes other than code B0136/74 may be output at this time, but
they are not related to this check.
NG REPLACE FRONT SEAT OUTER BELT ASSY LH
(SEE PAGE 61-4)
OK
USE SIMULATION METHOD TO CHECK
HINT:

Before performing the simulation method, check that the airbag sensor assy center is in check mode
(see page 05-1218).

Perform the simulation method by selecting the check mode with the hand-held tester (see page
05-1218).

After selecting the check mode, perform the simulation method by wiggling each connector of the air-
bag system or driving the vehicle on a city or rough road (see page 05-1218).

H01016H43108H01016H43108H43139
P/T Squib LH
PL- PL+Airbag
Sensor
Assy
CenterFloor Wire No.2
A
B C D
P13
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-1313
1503 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B0137/71 SHORT IN P/T SQUIB (LH) CIRCUIT (TO
GROUND)
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 instructs the SRS to deploy when deployment conditions are met.
DTC B0137/71 is recorded when a short to ground is detected in the P/T squib LH circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0137/71

Short circuit in P/T squib (LH) wire harness (to ground)

P/T squib (LH) malfunction

Airbag sensor assy center malfunction
Front seat outer belt assy LH (P/T squib LH)

Airbag sensor assy center

Floor wire No.2
WIRING DIAGRAM
see page 05-1306.
INSPECTION PROCEDURE
1 CHECK FLOOR WIRE NO.2(P/T SQUIB LH CIRCUIT)
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect negative (-) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Disconnect the connector from the airbag sensor assy
center and the front seat outer belt assy LH.
(d) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified condition
P13-1 (PL+) -
Body groundAlways1 MW or Higher
P13-2 (PL-) -
Body groundAlways1 MW or Higher
NG REPAIR OR REPLACE FLOOR WIRE NO.2
OK
0525Z-19

H01017
H10600 H01084H43107H43141
P/T Squib LH
DLC3
TC
CG
DTC B0137/71Airbag
Sensor
Assy
Center
PL- PL+
Floor Wire No.2
Service Wire
C D
P13
05-1314
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1504 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
2 CHECK AIR BAG SENSOR ASSY CENTER
(a) Connect the connector to the airbag sensor assy center.
(b) Using a service wire, connect P13-1 (PL+) and P13-2
(PL-) of connector ºCº.
NOTICE:

Twist the end of the service wire in order to insert it
into the connector.

Do not forcibly insert the twisted service wire into the
terminal of the connector when connecting.
(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 60 seconds.
(e) Clear the DTCs stored in memory (see page 05-1215).
(f) Turn the ignition switch to the LOCK position.
(g) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(h) Check the DTCs (see page 05-1215).
OK:
DTC B0137/71 is not output.
HINT:
Codes other than code B0137/71 may be output at this time, but
they are not related to this check.
NG REPLACE AIR BAG SENSOR ASSY CENTER
(SEE PAGE 60-53)
OK

H10600 H01018H01084H40062
P/T Squib LH
DLC3
CG
DTC B0137/71
TCAirbag
Sensor
Assy
Center C D
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-1315
1505 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
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) Disconnect the service wire from connector ºCº.
(d) Connect the connector to the front seat outer belt assy
LH.
(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 60 seconds.
(g) Clear the DTCs stored in memory (see page 05-1215).
(h) Turn the ignition switch to the LOCK position.
(i) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(j) Check the DTCs (see page 05-1215).
OK:
DTC B0137/71 is not output.
HINT:
Codes other than code B0137/71 may be output at this time, but
they are not related to this check.
NG REPLACE FRONT SEAT OUTER BELT ASSY LH
(SEE PAGE 61-4)
OK
USE SIMULATION METHOD TO CHECK
HINT:

Before performing the simulation method, check that the airbag sensor assy center is in check mode
(see page 05-1218).

Perform the simulation method by selecting the check mode with the hand-held tester (see page
05-1218).

After selecting the check mode, perform the simulation method by wiggling each connector of the air-
bag system or driving the vehicle on a city or rough road (see page 05-1218).

H01016H43108H01016H43108H43139
P/T Squib LH
PL- PL+Airbag
Sensor
Assy
CenterFloor Wire No.2
A
B C D
P13
05-1316
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1506 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
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 instructs the SRS to deploy when deployment conditions are met.
DTC B0137/71 is recorded when a short to ground is detected in the P/T squib LH circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0138/72

Short circuit in seat belt pretensioner (LH) wire harness
(to B+)

P/T squib (LH) malfunction

Airbag sensor assy center malfunction
Front seat outer belt assy LH (P/T squib LH)

Airbag sensor assy center

Floor wire No.2
WIRING DIAGRAM
see page 05-1306.
INSPECTION PROCEDURE
1 CHECK FLOOR WIRE NO.2(P/T SQUIB CIRCUIT)
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the bat-
tery, and wait at least for 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 wait for at least 2 seconds.
(e) Turn the ignition switch to the ON position.
(f) Measure the voltage according to the value(s) in the table
below.
Standard:
Tester connectionConditionSpecified condition
P13-1 (PL+) -
Body groundIgnition switch ONBelow 1 V
P13-2 (PL-) -
Body groundIgnition switch ONBelow 1 V
NG REPAIR OR REPLACE FLOOR WIRE NO.2
OK
05260-19

H01017
H10600 H01085H43107H43142
P/T Squib LH
DLC3
TC
CG
DTC B0138/72Airbag
Sensor
Assy
Center
PL-
PL+
Floor Wire No.2
Service Wire
C
D
P13
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-1317
1507 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
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 at least for 90 seconds.
(c) Connect the connector to the airbag sensor assy center.
(d) Using a service wire, connect P13-1 (PL+) and P13-2
(PL-) of connector ºCº.
NOTICE:

Twist the end of the service wire in order to insert it
into the connector.

Do not forcibly insert the twisted 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 60 seconds.
(g) Clear the DTCs stored in memory (see page 05-1215).
(h) Turn the ignition switch to the LOCK position.
(i) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(j) Check the DTCs (see page 05-1215).
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
(SEE PAGE 60-53)
OK

H10600 H01018H01085H40064
P/T Squib LH
DLC3
CG
DTC B0138/72
TCAirbag
Sensor
Assy
Center C D
05-1318
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1508 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
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) Disconnect the service wire from connector ºCº.
(d) Connect the connector to the front seat outer belt assy
LH.
(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 60 seconds.
(g) Clear the DTCs stored in memory (see page 05-1215).
(h) Turn the ignition switch to the LOCK position.
(i) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(j) Check the DTCs (see page 05-1215).
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
(SEE PAGE 61-4)
OK
USE SIMULATION METHOD TO CHECK
HINT:

Before performing the simulation method, check that the airbag sensor assy center is in check mode
(see page 05-1218).

Perform the simulation method by selecting the check mode with the hand-held tester (see page
05-1218).

After selecting the check mode, perform the simulation method by wiggling each connector of the air-
bag system or driving the vehicle on a city or rough road (see page 05-1218).

05-1448
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1638 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
HINT:

If troubleshooting (wire harness inspection) is difficult to perform, remove the front RH seat assy instal-
lation bolts to see the under surface of seat cushion.

In the above case, hold the seat so that it does not fall down. Holding the seat for a long period of time
may cause a problem, such as seat rail deformation. Hold the seat only as necessary.
1 CHECK DTC
(a) Turn the ignition switch to the ON position.
(b) Clear the DTCs stored in memory (see page 05-1215).
HINT:

First clear DTCs stored in the occupant classification ECU memory and then in the airbag sensor assy
center memory.

Use the hand-held tester to clear the DTC of the occupant classification ECU, otherwise the DTC can-
not be cleared.
(c) Turn the ignition switch to the LOCK position.
(d) Turn the ignition switch to the ON position.
(e) Using the hand-held tester, check the DTCs (see page 05-1215).
OK:
DTC B1771 is not output.
HINT:
Codes other than code B1771 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 (SEE PAGE 05-1207)
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 occupant classification ECU and the front
seat inner belt assy RH.
OK:
The connectors are connected.
NG CONNECT CONNECTORS, THEN GO TO STEP
1
OK