Page 919 of 2572
H41440H41440H43066
D SquibAirbag
Sensor
Assy
CenterSpiral
Cable
Sub-assy
Cowl Wire
A
B
C D
FE
D+
D-
A20
H01000
C89244H41479
D SquibAirbag
Sensor
Assy
CenterSpiral
Cable
Sub-assy
Color: Black
D+A
B C D FE
D-Cowl Wire
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-1245
1435 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
A20-1 (D+) -
Body groundAlways1 MW or Higher
A20-2 (D-) -
Body groundAlways1 MW or Higher
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
D+ - Body groundAlways1 MW or Higher
D- - Body groundAlways1 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).
Page 920 of 2572
H01001
C89244H41475
D SquibAirbag
Sensor
Assy
CenterSpiral
Cable
Sub-assy
Color: Black
D+A
B C D E F
D-
05-1246
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1436 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B0103/12 SHORT IN D SQUIB CIRCUIT (TO B+)
CIRCUIT DESCRIPTION
The D squib 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 B0103/12 is recorded when a short to B+ is detected in the D squib circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0103/12
Short circuit in D squib wire harness (to B+)
D squib malfunction
Spiral cable sub-assy malfunction
Airbag sensor assy center malfunctionHorn button assy (D squib)
Spiral cable sub-assy
Airbag sensor assy center
Cowl wire
WIRING DIAGRAM
see page 05-1233.
INSPECTION PROCEDURE
1 CHECK D SQUIB CIRCUIT(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) 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
D+ - Body groundIgnition switch ONBelow 1 V
D- - Body groundIgnition switch ONBelow 1 V
NG Go to step 4
OK
0525G-17
Page 921 of 2572
H01002
C89252
H10600
H42141
H44122
D SquibAirbag
Sensor
Assy
CenterSpiral
Cable
Sub-assy
Color: Black
CGTC DLC3DTC B0103/12
D+D-
Service Wire C D E F
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-1247
1437 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 for at least 90 seconds.
(c) Connect the connector to the airbag sensor assy center.
(d) Using a service wire, connect D+ and D- 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.
(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 B0103/12 is not output.
HINT:
Codes other than code B0103/12 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
Page 922 of 2572
H01003H10600W02043H01003H10600W02043H40038
D Squib
DLC3DTC B0103/12
CG
TCAirbag
Sensor
Assy
Center
Spiral
Cable
Sub-assy
E FCD
05-1248
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1438 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK HORN BUTTON ASSY(D SQUIB)
(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 B0103/12 is not output.
HINT:
Codes other than code B0103/12 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).
Page 923 of 2572
H41440H41440H43066
D SquibAirbag
Sensor
Assy
CenterSpiral
Cable
Sub-assy
Cowl Wire
A
B
C D
FE
D+
D-A20
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-1249
1439 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
4 CHECK COWL WIRE
(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 cowl wire connector from the spiral cable
sub-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.
(f) Measure the voltage according to the value(s) in the table
below.
Standard:
Tester connectionConditionSpecified condition
A20-1 (D+) -
Body groundIgnition switch ONBelow 1 V
A20-2 (D-) -
Body groundIgnition switch ONBelow 1 V
NG REPAIR OR REPLACE COWL WIRE
OK
Page 924 of 2572
H01000
C89244H41479
D SquibAirbag
Sensor
Assy
CenterSpiral
Cable
Sub-assy
Color: Black
D+A
B C D FE
D-Cowl Wire
05-1250
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1440 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
5 CHECK SPIRAL CABLE SUB-ASSY
(a) Measure the voltage according to the value(s) in the table
below when the ignition switch is in the ON position.
Standard:
Tester connectionConditionSpecified condition
D+ - Body groundIgnition switch ONBelow 1 V
D- - Body groundIgnition switch ONBelow 1 V
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).
Page 925 of 2572
H01454
A19
P SquibAirbag Sensor Assy Center
Y-B
Y 1
210
P+ A17
P- 11
A17
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-1251
1441 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B0105/53 SHORT IN P SQUIB CIRCUIT
CIRCUIT DESCRIPTION
The P squib circuit consists of the airbag sensor assy center and the front passenger airbag assy.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B0105/53 is recorded when a short circuit is detected in the P squib circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0105/53
Short circuit between P+ wire harness and P- wire har-
ness of P squib
P squib malfunction
Airbag sensor assy center malfunctionFront passenger airbag assy (P squib)
Airbag sensor assy center
Cowl wire
WIRING DIAGRAM
0525H-05
Page 926 of 2572
R14286H41424H41932
P SquibAirbag
Sensor
Assy
Center
P-P+ Cowl Wire
A
DC
B
A19
H01023H10600H01077H42107
P Squib
DTC B0105/53
DLC3
CG
TCAirbag
Sensor
Assy
Center DC
05-1252
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1442 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK COWL WIRE(P SQUIB 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 passenger airbag assy.
(d) Release the activation prevention mechanism built into
connector ºBº (see page 05-1207).
(e) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified condition
A19-1 (P+) -
A19-2 (P-)Always1 MW or Higher
NG REPAIR OR REPLACE COWL WIRE
OK
2 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 B0105/53 is not output.
HINT:
Codes other than code B0105/53 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
