Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 05 rs citcterm
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DI-496
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
DI1BQ-30
Tc Terminal Circuit
CIRCUIT DESCRIPTION
By connecting terminals Tc and CG of the DLC3 the airbag sensor assembly is set in the DTC output mode.
The DTCs are displayed by blinking the SRS warning light.
2001 SIENNA (RM787U)
Author : Date : 650
DI-497
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
WIRING DIAGRAM
Airbag Sensor Assembly
J6 Junction
Connector
F 19
P-B F P-B
C5 Tc
IH2 18
PB
11
Tc
DLC1 Driver Side J/B No. 1
4 3 27
E1 1V 1N C5 E1
W-B
3
BR
W-B
A
J14 Junction
Connector
A
BR
EC Rear Side of the IG Left Coel Side
Surge Tank Pannel
H02754
2001 SIENNA (RM787U)
Author : Date : 651
DI-498
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
INSPECTION PROCEDURE
If the DTC is not displayed, do the following troubleshooting.
1 Does SRS warning light light up for approx. 6 seconds?
PREPARATION:
LOCK ACC ON
Check operation of the SRS warning light after ignition switch
is turned from LOCK position to ACC or ON position.
or
w/ Tachometer:
NO Check SRS warning light system (See page
AB0117 AB0118 AB0119
w/o Tachometer: DI-490 ).
H02719
H02773
YES
2 Check voltage between terminals Tc and CG of DLC3.
ACC ON PREPARATION:
Turn the ignition switch to ACC or ON.
CG
CHECK:
or
Measure the voltage between terminals Tc and CG of DLC3.
OK:
Voltage: 10 - 14 V
Tc
(-) (+)
AB0118 AB0119
H10688 H16613
OK Go to step 4.
NG
2001 SIENNA (RM787U)
Author : Date : 652
DI-499
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
3 Check voltage between terminal Tc of DLC3 and body ground.
ACC ON CHECK:
Measure the voltage between terminal Tc of DLC3 and body
Tc
ground.
or
OK:
Voltage: 10 - 14 V
(-) (+)
OK Check harness between terminal CG of DLC3
AB0118 AB0119
H16614
and body ground.
H10689
NG
4 Check airbag sensor assembly.
PREPARATION:
LOCK ACC ON (a) Turn the ignition switch to LOCK.
(b) Disconnect negative (-) terminal cable from the battery,
or and wait at least for 90 seconds.
Airbag Sensor Assembly (c) Disconnect the airbag sensor assembly connector.
(d) Insert service wire into terminal Tc from back side as
shown in the illustration.
(e) Connect the airbag sensor assembly connector with ser-
vice wire.
(f) Connect negative (-) terminal cable to the battery.
(g) Turn the ignition switch to ACC or ON and wait at least for
20 seconds.
Tc
(h) Connect service wire of terminal Tc to body ground.
AB0117 AB0118 AB0119
H01302 H01303 CHECK:
Check operation of the SRS warning light.
OK:
SRS waning light comes on.
NOTICE:
Pay due attention to the terminal connecting position to
avoid a malfunction.
OK Check harness between the airbag sensor as-
sembly and DLC3.
NG
Replace airbag sensor assembly.
2001 SIENNA (RM787U)
Author : Date : 653
DI-500
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
If the DTC is displayed without a DTC check procedure, perform the following
troubleshooting.
1 Check resistance between terminal Tc of airbag sensor assembly and body
ground.
LOCK Airbag Sensor Assembly PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect negative (-) terminal cable from the battery,
and wait at least for 90 seconds.
Tc (c) Disconnect the airbag sensor assembly connector.
CHECK:
(-) (+) Check resistance between terminal Tc of the airbag sensor as-
sembly connector and body ground.
AB0119
H01304 H01305 OK:
Resistance: 1 M or Higher
NG Repair or replace harness or connector.
OK
Replace airbag sensor assembly.
2001 SIENNA (RM787U)
Author : Date : 654
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