Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 21q2h73z b118118a
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05-982
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM 05IWC-03
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 Condition Trouble Area
S The airbag sensor assy center receives an open circuit
signal in the D squib (Dual stage - 2nd step) circuit for 2 S Horn button assy (D squib, Dual stage - 2nd step)
seconds. S Spiral cable sub-assy
B1182/19
S D squib (Dual stage - 2nd step) malfunction S Airbag sensor assy center
S Spiral cable sub-assy malfunction S Instrument panel wire
S Airbag sensor assy center malfunction
WIRING DIAGRAM
See page 05-977 .
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.
D Squib (b) Disconnect the negative (-) terminal cable from the bat-
(Dual stage
Airbag tery, and wait for at least 90 seconds.
- 2nd step) Spiral
Sensor (c) Disconnect the connectors from the airbag sensor assy
Cable A center and the horn button assy.
Sub-assy Assy
F E DC B (d) Measure the resistance according to the value(s) in the
Center
table below.
Standard:
D2+ D2-
Tester connection Condition Specified condition
D2+ - D2- Always Below 1
Color: Black
H41475 H43070
NG Go to step 4
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1165
05-983
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
2 CHECK AIR BAG SENSOR ASSY CENTER
(a) Connect the connector to the airbag sensor assy center.
D Squib
(Dual stage
(b) Using a service wire, connect D2+ and D2- of connector
Airbag "E".
- 2nd step) Spiral
Sensor
Cable NOTICE:
Assy
FE Sub-assy
DC S Twist the end of the service wire in order to insert it
Center
into the connector.
S Do not forcibly insert the twisted service wire into the
D2- terminals of the connector when connecting.
D2+
(c) Connect the negative (-) terminal cable to the battery,
Service Wire and wait for at least 2 seconds.
(d) Turn the ignition switch to the ON position, and wait for at
Color: Black least 60 seconds.
(e) Clear the DTCs stored in memory (see page 05-777 ).
DLC3 DTC B1181/18 (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 05-777 ).
CG TC OK:
H01002
C89252 DTC B1181/18 is not output.
H10600 C89253 H42139
HINT:
Codes other than code B1181/18 may be output at this time, but
they are not related to this check.
NG REPLACE AIR BAG SENSOR ASSY CENTER
(SEE PAGE 60-56 )
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1166
05-984
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
3 CHECK HORN BUTTON ASSY(D SQUIB, DUAL STAGE - 2ND STEP)
(a) Turn the ignition switch to the LOCK position.
D Squib
(Dual stage
(b) Disconnect the negative (-) terminal cable from the bat-
- 2nd step) Spiral
Airbag tery, and wait for at least 90 seconds.
Sensor (c) Disconnect the service wire from connector "E".
Cable
Sub-assy
Assy (d) Connect the connectors to the horn button assy.
FE DC Center
(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
DLC3 DTC B1181/18 least 60 seconds.
(g) Clear the DTCs stored in memory (see page 05-777 ).
(h) Turn the ignition switch to the LOCK position.
(i) Turn the ignition switch to the ON position, and wait for at
CG TC
least 60 seconds.
H01003
H10600 C89253 H42140 (j) Check the DTCs (see page 05-777 ).
OK:
DTC B1181/18 is not output.
HINT:
Codes other than code B1181/18 may be output at this time, but
they are not related to this check.
NG REPLACE HORN BUTTON ASSY
(SEE PAGE 60-19 )
OK
USE SIMULATION METHOD TO CHECK (SEE PAGE 05-770 )
HINT:
S Perform the simulation method by selecting the check mode with the hand-held tester (see page
05-780 ).
S 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 05-780 ).
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1167
05-985
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
4 CHECK INSTRUMENT PANEL WIRE
D Squib Instrument Panel Wire (a) Disconnect the instrument panel wire connector from the
(Dual stage Airbag spiral cable sub-assy.
- 2nd step) Spiral
Sensor (b) Measure the resistance according to the value(s) in the
Cable A
Sub-assy
Assy table below.
F E D C B Center Standard:
Tester connection Condition Specified condition
A24 A24-4 (D2+) -
Always Below 1
A24-3 (D2-)
D2+
D2-
H41440 H43066 NG REPAIR OR REPLACE INSTRUMENT PANEL
WIRE
OK
5 CHECK SPIRAL CABLE SUB-ASSY
(a) Measure the resistance according to the value(s) in the
D Squib
table below.
(Dual stage Standard:
Airbag
- 2nd step) Spiral Tester connection Condition Specified condition
Sensor
Cable A D2+ - D2- Always Below 1
Sub-assy Assy
F E D C B
Center
D2+ D2-
Color: Black
H41479 H43071 NG REPLACE SPIRAL CABLE SUB-ASSY
(SEE PAGE 60-28 )
OK
USE SIMULATION METHOD TO CHECK (SEE PAGE 05-770 )
HINT:
S Perform the simulation method by selecting the check mode with the hand-held tester (see page
05-780 ).
S 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 05-780 ).
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1168
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