Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 21q2h73z b163886
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05-1029
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM 05NTC-01
DTC B1638/86 SHORT IN CURTAIN SHIELD SQUIB REAR
(LH) CIRCUIT (TO B+)
CIRCUIT DESCRIPTION
The curtain shield squib rear LH circuit consists of the airbag sensor assy center and the curtain shield airbag
assy LH.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B1638/86 is recorded when a short to B+ is detected in the curtain shield squib rear LH circuit.
DTC No. DTC Detecting Condition Trouble Area
S The airbag sensor assy center receives a short circuit to
B+ signal in the curtain shield squib rear LH circuit for 0.5 S Curtain shield airbag assy LH (Curtain shield squib rear LH)
B1638/86 seconds. S Airbag sensor assy center
S Curtain shield squib rear LH malfunction S Floor wire
S Airbag sensor assy center malfunction
WIRING DIAGRAM
See page 05-1019 .
INSPECTION PROCEDURE
1 CHECK FLOOR WIRE(CURTAIN SHIELD SQUIB REAR LH CIRCUIT)
(a) Turn the ignition switch to the LOCK position.
Curtain Shield Floor Wire (b) Disconnect the negative (-) terminal cable from the bat-
Squib Rear LH tery, and wait for at least 90 seconds.
A Airbag (c) Disconnect the connectors from the airbag sensor assy
D C B Sensor
center and the curtain shield airbag assy LH.
Assy
(d) Connect the negative (-) terminal cable to the battery,
Center
C16 and wait for at least 2 seconds.
(e) Turn the ignition switch to the ON position.
CL2+ CL2- (f) Measure the voltage according to the value(s) in the table
below.
Standard:
Tester connection Condition Specified condition
C16-1 (CL2+) -
Ignition switch ON Below 1 V
Body ground
H41469 H43069
C16-2 (CL2-) -
Ignition switch ON Below 1 V
Body ground
NG REPAIR OR REPLACE FLOOR WIRE
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1212
05-1030
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
2 CHECK AIR BAG SENSOR ASSY CENTER
Floor Wire (a) Turn the ignition switch to the LOCK position.
Curtain Shield (b) Disconnect the negative (-) terminal cable from the bat-
Squib Rear LH
tery, and wait for at least 90 seconds.
Airbag (c) Connect the connector to the airbag sensor assy center.
D C Sensor
(d) Using a service wire, connect C16-1 (CL2+) and C16-2
C16 Assy
(CL2-) of connector "C".
CL2+ Center
NOTICE:
CL2- S Twist the end of the service wire in order to insert it
Service Wire into the connector.
S 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,
DLC3 and wait for at least 2 seconds.
DTC B1638/86
(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 ).
CG TC (h) Turn the ignition switch to the LOCK position.
H01017 (i) Turn the ignition switch to the ON position, and wait for at
C89252
H10600 H11647 H42136 least 60 seconds.
(j) Check the DTCs (see page 05-777 ).
OK:
DTC B1638/86 is not output.
HINT:
Codes other than code B1638/86 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 : 1213
05-1031
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
3 CHECK CURTAIN SHIELD AIR BAG ASSY LH(CURTAIN SHIELD SQUIB REAR LH)
Curtain Shield (a) Turn the ignition switch to the LOCK position.
Squib Rear LH (b) Disconnect the negative (-) terminal cable from the bat-
tery, and wait for at least 90 seconds.
Airbag
DC Sensor (c) Disconnect the service wire from connector "C".
Assy (d) Connect the connector to the curtain shield airbag assy
Center LH.
(e) Connect the negative (-) terminal cable to the battery,
DLC3 and wait for at least 2 seconds.
DTC B1638/86 (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 ).
CG TC (h) Turn the ignition switch to the LOCK position.
(i) Turn the ignition switch to the ON position, and wait for at
H01018
H10600 H11647 H40949 least 60 seconds.
(j) Check the DTCs (see page 05-777 ).
OK:
DTC B1638/86 is not output.
HINT:
Codes other than code B1638/86 may be output at this time, but
they are not related to this check.
NG REPLACE CURTAIN SHIELD AIR BAG ASSY LH
(SEE PAGE 60-40 )
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 : 1214
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