Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 21q2h73z b118755a
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05-1000
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM 05IWK-03
DTC B1187/55 SHORT IN P SQUIB (DUAL STAGE - 2ND
STEP) CIRCUIT (TO GROUND)
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 B1187/55 is recorded when a short to ground 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 short circuit to
S Front passenger airbag assy (P squib, Dual stage - 2nd
ground signal in the P squib (Dual stage - 2nd step) circuit
step)
B1187/55 for 0.5 seconds.
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
See page 05-994 .
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
Airbag tery, and wait for at least 90 seconds.
- 2nd step)
Sensor (c) Disconnect the connectors from the airbag sensor assy
A
Assy center and the front passenger airbag assy.
D C B Center (d) Measure the resistance according to the value(s) in the
table below.
A23 Standard:
Tester connection Condition Specified condition
A23-3 (P2+) -
Always 1 M or Higher
P2- Body ground
A23-4 (P2-) -
Always 1 M or Higher
Body ground
R14286
H41424 P2+ H41932 NG REPAIR OR REPLACE INSTRUMENT PANEL
WIRE
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1183
05-1001
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
2 CHECK AIR BAG SENSOR ASSY CENTER
P Squib Instrument Panel Wire (a) Connect the connector to the airbag sensor assy center.
(Dual stage (b) Using SST, connect A23-3 (P2+) and A23-4 (P2-) of
Airbag connector "C".
- 2nd step)
Sensor
SST 09843-18040
Assy
D C (c) Connect the negative (-) terminal cable to the battery,
Center
and wait for at least 2 seconds.
P2+ (d) Turn the ignition switch to the ON position, and wait for at
A23 least 60 seconds.
(e) Clear the DTCs stored in memory (see page 05-777 ).
P2-
(f) Turn the ignition switch to the LOCK position.
(g) Turn the ignition switch to the ON position, and wait for at
SST
least 60 seconds.
DLC3 DTC B1187/55 (h) Check the DTCs (see page 05-777 ).
OK:
DTC B1187/55 is not output.
HINT:
CG TC Codes other than code B1187/55 may be output at this time, but
H01023
they are not related to this check.
H16853
H10600 H16838 H41983
NG REPLACE AIR BAG SENSOR ASSY CENTER
(SEE PAGE 60-56 )
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1184
05-1002
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) Disconnect the SST from connector "C".
Sensor
Assy (d) Connect the connector to the front passenger airbag
DC Center assy.
(e) Connect the negative (-) terminal cable to the battery,
and wait for at least 2 seconds.
DLC3 DTC B1187/55
(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 05-777 ).
(h) Turn the ignition switch to the LOCK position.
CG TC
(i) Turn the ignition switch to the ON position, and wait for at
H01024
H10600 H16838 H42150 least 60 seconds.
(j) Check the DTCs (see page 05-777 ).
OK:
DTC B1187/55 is not output.
HINT:
Codes other than code B1187/55 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 : 1185
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