o2 sensor TOYOTA HIGHLANDER 2001 Service Repair Manual

H43063
Airbag Sensor Assy Center
D Squib
A20
Spiral Cable
Sub-assyY-G Y-R
D2+
D2- 4A17
3A171716D+
D- A17
A171314
Y Y-B
1
2 2
1
1
2 05-1416
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1606 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B1180/17 SHORT IN D SQUIB (DUAL STAGE - 2ND
STEP) CIRCUIT
CIRCUIT DESCRIPTION
The D squib (Dual stage - 2nd step) circuit consists of the airbag sensor assy center, the spiral cable sub-
assy and the horn button assy.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B1180/17 is recorded when a short circuit is detected in the D squib (Dual stage - 2nd step) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1180/17

Short circuit between D2+ wire harness and D2- wire
harness of D squib (Dual stage - 2nd step)

D squib (Dual stage - 2nd step) malfunction

Spiral cable sub-assy malfunction

Airbag sensor assy center malfunction
Horn button assy (D squib, Dual stage - 2nd step)

Spiral cable sub-assy

Airbag sensor assy center

Cowl wire
WIRING DIAGRAM
05IWA-01

H01001
C91344H41439
Airbag
Sensor
Assy
CenterSpiral
Cable
Sub-assy
Color: Orange
A
FE
DC B
D2- D2+
D Squib
(Dual stage
- 2nd step)
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-1417
1607 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK 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 horn button assy.
(d) Check that the spiral cable sub-assy connectors (on the horn button assy side) are not damaged.
OK:
The lock button is not disengaged, or the claw of the lock is not deformed or damaged.
NG REPLACE SPIRAL CABLE SUB-ASSY
(SEE PAGE 60-26)
OK
2 CHECK D SQUIB CIRCUIT(DUAL STAGE - 2ND STEP, AIRBAG SENSOR ASSY
CENTER - HORN BUTTON ASSY)
(a) Disconnect the connector from the airbag sensor assy
center.
(b) Release the activation prevention mechanism built into
connector ºBº (see page 05-1207).
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified condition
D2+ - D2-Always1 MW or Higher
NG Go to step 5
OK

H01002H10600C89246H01002H10600C89246H42137
Airbag
Sensor
Assy
CenterSpiral
Cable
Sub-assy
DLC3
CG
TCDTC B1180/17
FE
DC
D Squib
(Dual stage
- 2nd step)
05-1418
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1608 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK AIR BAG SENSOR ASSY CENTER
(a) Connect the connector to the airbag sensor assy center.
(b) Connect the negative (-) terminal cable to the battery,
and wait for at least 2 seconds.
(c) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(d) Clear the DTCs stored in memory (see page 05-1215).
(e) Turn the ignition switch to the LOCK position.
(f) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(g) Check the DTCs (see page 05-1215).
OK:
DTC B1180/17 is not output.
HINT:
Codes other than code B1180/17 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

H01003H10600C89246H01003H10600C89246H42138
Airbag
Sensor
Assy
CenterSpiral
Cable
Sub-assy
DLC3
CGTCDTC B1180/17
FE
DC
D Squib
(Dual stage
- 2nd step)
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-1419
1609 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
4 CHECK HORN BUTTON ASSY(D SQUIB, DUAL STAGE - 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 connectors to the horn button 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 60 seconds.
(f) Clear the DTCs stored in memory (see page 05-1215).
(g) Turn the ignition switch to the LOCK position.
(h) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(i) Check the DTCs (see page 05-1215).
OK:
DTC B1180/17 is not output.
HINT:
Codes other than code B1180/17 may be output at this time, but
they are not related to this check.
NG REPLACE HORN BUTTON ASSY
(SEE PAGE 60-17)
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).

H41440H41440H43066
Airbag
Sensor
Assy
CenterSpiral
Cable
Sub-assy
Cowl Wire
FE
DC
B
D Squib
(Dual stage
- 2nd step)
A
D2+
D2-
A20
H41441H43065
Airbag
Sensor
Assy
CenterSpiral
Cable
Sub-assy
Color: Orange
A
B C D E F
D2- D2+
D Squib
(Dual stage
- 2nd step)
05-1420
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1610 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
5 CHECK COWL WIRE
(a) Disconnect the cowl wire connector from the spiral cable
sub-assy .
HINT:
The activation prevention mechanism of connector ºBº has al-
ready been released.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified condition
A20-4 (D2+) -
A20-3 (D2-)Always1 MW or Higher
NG REPAIR OR REPLACE COWL WIRE
OK
6 CHECK SPIRAL CABLE SUB-ASSY
(a) Release the activation prevention mechanism built into
connector ºDº (see page 05-1207).
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified condition
D2+ - D2-Always1 MW or Higher
NG REPLACE SPIRAL CABLE SUB-ASSY
(SEE PAGE 60-26)
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).

H41439H43064
Airbag
Sensor
Assy
CenterSpiral
Cable
Sub-assy
Color: Orange
A
FE
DC B
D2+
D Squib
(Dual stage
- 2nd step)
D2-
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-1421
1611 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B1181/18 OPEN IN D SQUIB (DUAL STAGE - 2ND
STEP) CIRCUIT
CIRCUIT DESCRIPTION
The D squib (Dual stage - 2nd step) circuit consists of the airbag sensor assy center, the spiral cable sub-
assy and the horn button assy.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B1182/19 is recorded when a short to ground is detected in the D squib (Dual stage - 2nd step) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1182/19

Short circuit in D squib (Dual stage - 2nd step) wire har-
ness (to ground)

D squib (Dual stage - 2nd step) malfunction

Spiral cable sub-assy malfunction

Airbag sensor assy center malfunction
Horn button assy (D squib, Dual stage - 2nd step)

Spiral cable sub-assy

Airbag sensor assy center

Cowl wire
WIRING DIAGRAM
see page 05-1416.
INSPECTION PROCEDURE
1 CHECK D SQUIB CIRCUIT(DUAL STAGE - 2ND STEP, AIRBAG SENSOR ASSY
CENTER - HORN BUTTON ASSY)
(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 horn button assy.
(d) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified condition
D2+ - D2-AlwaysBelow 1 W
NG Go to step 4
OK
05IWC-01

H01002
C89252
H10600 C91338H44127
Airbag
Sensor
Assy
CenterSpiral
Cable
Sub-assy
Color: Orange
DLC3
CG TCDTC B1182/19
Service WireD2-
D2+
FE
DC
D Squib
(Dual stage
- 2nd step)
05-1422
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1612 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 D2+ and D2- of connector
ºEº.
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
terminals, 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 B1182/19 is not output.
HINT:
Codes other than code B1182/19 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

H01003H10600 C89253H01003H10600 C89253H42142
Airbag
Sensor
Assy
CenterSpiral
Cable
Sub-assy
DLC3
CG
TCDTC B1182/19
D Squib
(Dual stage
- 2nd step)
FE
D
C
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-1423
1613 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK HORN BUTTON ASSY(D SQUIB, DUAL STAGE - 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) Disconnect the service wire from connector ºEº.
(d) Connect the connectors to the horn button assy.
(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 B1182/19 is not output.
HINT:
Codes other than code B1182/19 may be output at this time, but
they are not related to this check.
NG REPLACE HORN BUTTON ASSY
(SEE PAGE 60-17)
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).

H41440H41440H43066
D Squib
(Dual stage
- 2nd step)
A
FE
DC
BAirbag
Sensor
Assy
Center
Spiral
Cable
Sub-assy
D2+
Cowl Wire
D2-
A20
H41441H43065
Airbag
Sensor
Assy
CenterSpiral
Cable
Sub-assy
Color: Orange
D Squib
(Dual stage
- 2nd step)
A
FE
DC B
D2+D2-
05-1424
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1614 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
4 CHECK COWL WIRE
(a) Disconnect the cowl wire connector from the spiral cable
sub-assy .
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified condition
A20-4 (D2+) -
A20-3 (D2-)AlwaysBelow 1 W
NG REPAIR OR REPLACE COWL WIRE
OK
5 CHECK SPIRAL CABLE SUB-ASSY
(a) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified condition
D2+ - D2-AlwaysBelow 1 W
NG REPLACE SPIRAL CABLE SUB-ASSY
(SEE PAGE 60-26)
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).

H41439H43064
Airbag
Sensor
Assy
CenterSpiral
Cable
Sub-assy
Color: Orange
A
FE
DC B
D2+
D Squib
(Dual stage
- 2nd step)
D2-
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-1425
1615 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B1182/19 SHORT IN D SQUIB (DUAL STAGE - 2ND
STEP) CIRCUIT (TO GROUND)
CIRCUIT DESCRIPTION
The D squib (Dual stage - 2nd step) circuit consists of the airbag sensor assy center, the spiral cable sub-
assy and the horn button assy.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B1182/19 is recorded when a short to ground is detected in the D squib (Dual stage - 2nd step) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1182/19

Short circuit in D squib (Dual stage - 2nd step) wire har-
ness (to ground)

D squib (Dual stage - 2nd step) malfunction

Spiral cable sub-assy malfunction

Airbag sensor assy center malfunction
Horn button assy (D squib, Dual stage - 2nd step)

Spiral cable sub-assy

Airbag sensor assy center

Cowl wire
WIRING DIAGRAM
see page 05-1416.
INSPECTION PROCEDURE
1 CHECK D SQUIB CIRCUIT(DUAL STAGE - 2ND STEP, AIRBAG SENSOR ASSY
CENTER - HORN BUTTON ASSY)
(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 horn button assy.
(d) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified condition
D2+ - Body groundAlways1 MW or Higher
D2- - Body groundAlways1 MW or Higher
NG Go to step 4
OK
05IWF-01