Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 21q2h73z b118017a
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05-977
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM 05IWA-03
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 Condition Trouble Area
S The airbag sensor assy center receives a line short circuit
signal 5 times in the D squib (Dual stage - 2nd step) cir- S Horn button assy (D squib, Dual stage - 2nd step)
cuit during primary check. S Spiral cable sub-assy
B1180/17
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
Airbag Sensor Assy Center
D Squib
16
Y-V
A21 D2+
1 4
17
Y-O
A21 D2-
2 3
A24
Spiral Cable
Sub-assy
H01451
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1160
05-978
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
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 60-28 )
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
D Squib center.
(Dual stage
Airbag (b) Release the activation prevention mechanism built into
- 2nd step)
Spiral connector "B" (see page 05-770 ).
Sensor
Cable A (c) Measure the resistance according to the value(s) in the
Sub-assy Assy
F E DC B table below.
Center
Standard:
Tester connection Condition Specified condition
D2+ D2-
D2+ - D2- Always 1 M or Higher
Color: Black
NG Go to step 5
H41475 H43070
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1161
05-979
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
3 CHECK AIR BAG SENSOR ASSY CENTER
D Squib (a) Connect the connector to the airbag sensor assy center.
(Dual stage
Airbag (b) Connect the negative (-) terminal cable to the battery,
- 2nd step) Spiral
Sensor and wait for at least 2 seconds.
Cable (c) Turn the ignition switch to the ON position, and wait for at
Assy
F E Sub-assy
DC Center least 60 seconds.
(d) Clear the DTCs stored in memory (see page 05-777 ).
(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.
DLC3 DTC B1180/17
(g) Check the DTCs (see page 05-777 ).
OK:
DTC B1180/17 is not output.
CG TC HINT:
H01002
H10600 C89246 H42137 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 60-56 )
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1162
05-980
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
4 CHECK HORN BUTTON ASSY(D SQUIB, DUAL STAGE - 2ND STEP)
D Squib (a) Turn the ignition switch to the LOCK position.
(Dual stage
Airbag (b) Disconnect the negative (-) terminal cable from the bat-
- 2nd step) Spiral
Sensor tery, and wait for at least 90 seconds.
Cable
Assy (c) Connect the connectors to the horn button assy.
Sub-assy
FE DC 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 60 seconds.
DLC3 DTC B1180/17 (f) Clear the DTCs stored in memory (see page 05-777 ).
(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.
CG TC (i) Check the DTCs (see page 05-777 ).
H01003
H10600 C89246 H42138 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 60-19 )
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 : 1163
05-981
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
5 CHECK INSTRUMENT PANEL WIRE
D Squib Instrument Panel Wire (a) Disconnect the instrument panel wire connector from the
(Dual stage spiral cable sub-assy.
Airbag
- 2nd step) Spiral
Cable Sensor HINT:
A
Sub-assy Assy The activation prevention mechanism of connector "B" has al-
F E D C B
Center ready been released.
(b) Measure the resistance according to the value(s) in the
A24 table below.
Standard:
Tester connection Condition Specified condition
D2+ A24-4 (D2+) -
Always 1 M or Higher
A24-3 (D2-)
D2-
H41440 H43066 NG REPAIR OR REPLACE INSTRUMENT PANEL
WIRE
OK
6 CHECK SPIRAL CABLE SUB-ASSY
(a) Release the activation prevention mechanism built into
D Squib
connector "D" (see page 05-770 ).
(Dual stage (b) Measure the resistance according to the value(s) in the
Airbag
- 2nd step) Spiral table below.
Sensor
Cable A Standard:
Sub-assy Assy
F E D C B Tester connection Condition Specified condition
Center
D2+ - D2- Always 1 M or Higher
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 : 1164
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