Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 21q2h73z b118557a
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05-994
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM 05IWI-03
DTC B1185/57 SHORT IN P SQUIB (DUAL STAGE - 2ND
STEP) CIRCUIT
CIRCUIT DESCRIPTION
The P squib (Dual stage - 2nd step) 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 B1185/57 is recorded when a short circuit is detected in the P squib (Dual stage - 2nd step) circuit.
DTC No. DTC Detecting Condition Trouble Area
S The airbag sensor assy center receives a line short circuit
S Front passenger airbag assy (P squib, Dual stage - 2nd
signal 5 times in the P squib (Dual stage - 2nd step) cir-
step)
B1185/57 cuit during primary check.
S Airbag sensor assy center
S P squib (Dual stage - 2nd step) malfunction
S Instrument panel wire
S Airbag sensor assy center malfunction
WIRING DIAGRAM
Airbag Sensor Assy Center
A23
P Squib
8
Y-GR
A21 P2+
3
7
Y-P
A21 P2-
4
H01454
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1177
05-995
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
INSPECTION PROCEDURE
1 CHECK INSTRUMENT PANEL WIRE(P SQUIB, DUAL STAGE - 2ND STEP
CIRCUIT)
(a) Turn the ignition switch to the LOCK position.
P Squib Instrument Panel Wire (b) Disconnect the negative (-) terminal cable from the bat-
(Dual stage tery, and wait for at least 90 seconds.
Airbag
- 2nd step) (c) Disconnect the connectors from the airbag sensor assy
Sensor
A
Assy center and the front passenger airbag assy.
D C B
Center (d) Release the activation prevention mechanism built into
connector "B" (see page 05-770 ).
A23 (e) Measure the resistance according to the value(s) in the
table below.
Standard:
P2- Tester connection Condition Specified condition
A23-3 (P2+) -
Always 1 M or Higher
A23-4 (P2-)
R14286
P2+
H41424 H41932 NG REPAIR OR REPLACE INSTRUMENT PANEL
WIRE
OK
2 CHECK AIR BAG SENSOR ASSY CENTER
(a) Connect the connector to the airbag sensor assy center.
P Squib (b) Connect the negative (-) terminal cable to the battery,
(Dual stage Airbag
and wait for at least 2 seconds.
- 2nd step) Sensor (c) Turn the ignition switch to the ON position, and wait for at
Assy least 60 seconds.
D C Center (d) Clear the DTCs stored in memory (see page 05-777 ).
(e) Turn the ignition switch to the LOCK position.
DLC3
(f) Turn the ignition switch to the ON position, and wait for at
DTC B1185/57 least 60 seconds.
(g) Check the DTCs (see page 05-777 ).
OK:
DTC B1185/57 is not output.
CG TC
HINT:
H01023
H10600 H16840 H42145 Codes other than code B1185/57 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 : 1178
05-996
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
3 CHECK FRONT PASSENGER AIRBAG ASSY(P SQUIB, DUAL STAGE - 2ND STEP)
(a) Turn the ignition switch to the LOCK position.
P Squib (b) Disconnect the negative (-) terminal cable from the bat-
(Dual stage tery, and wait for at least 90 seconds.
Airbag
- 2nd step) (c) Connect the connector to the front passenger airbag
Sensor
Assy assy.
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
DLC3
DTC B1185/57 least 60 seconds.
(f) Clear the DTCs stored in memory (see page 05-777 ).
(g) Turn the ignition switch to the LOCK position.
CG TC (h) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
H01024
H10600 H16840 H42146 (i) Check the DTCs (see page 05-777 ).
OK:
DTC B1185/57 is not output.
HINT:
Codes other than code B1185/57 may be output at this time, but
they are not related to this check.
NG REPLACE FRONT PASSENGER AIRBAG ASSY
(SEE PAGE 60-31 )
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 : 1179
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