Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 05 rs cib01021
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DI-380
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
DI4DM-05
DTC B0102/11 Short in D Squib Circuit (to Ground)
CIRCUIT DESCRIPTION
The D squib circuit consists of the airbag sensor assembly, spiral cable and steering wheel pad.
It causes the SRS to deploy when the SRS deployment conditions are satisfied.
For details of the function of each component, see OPERATION on page RS-2 .
DTC B0102/11 is recorded when a ground short is detected in the D squib circuit.
DTC No. DTC Detecting Condition Trouble Area
S Short circuit in D squib wire harness (to ground) S Steering wheel pad (D squib)
S D squib malfunction S Spiral cable
B0102/11
S Spiral cable malfunction S Airbag sensor assembly
S Airbag sensor assembly malfunction S Wire harness
WIRING DIAGRAM
See page DI-371 .
INSPECTION PROCEDURE
1 Prepare for inspection (See step 1 on page DI-486 ).
2 Check D squib circuit.
CHECK:
For the connector (on the spiral cable side) between the spiral
Airbag cable and the steering wheel pad, measure the resistance be-
Spiral
Cable Sensor tween D+ and body ground.
Assembly
D Squib OK:
Resistance: 1 M or Higher
D+
(-) (+)
H01001
NG Go to step 5.
H02145 H02198
OK
2001 SIENNA (RM787U)
Author : Date : 534
DI-381
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
3 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connector to the airbag sensor assembly.
Airbag (b) Using a service wire, connect D+ and D- of the connector
Spiral (on the spiral cable side) between the spiral cable and the
Sensor
Cable
Assembly steering wheel pad.
D Squib
(c) Connect negative (-) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
ACC ON
(a) Turn the ignition switch to ACC or ON, and wait at least
D- D+
for 20 seconds.
(b) Clear the DTC stored in memory
or
(See step 5 on page DI-358 ).
DLC1 DTC B0102/11 (c) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(d) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
(e) Check the DTC (See page DI-358 ).
E1 Tc
H01002 OK:
H02144 AB0069
AB0118 AB0118 DTC B0102/11 is not output.
R13006 W02042 H11569
HINT:
Codes other than code B0102/11 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK
2001 SIENNA (RM787U)
Author : Date : 535
DI-382
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
4 Check D squib.
PREPARATION:
(a) Turn the ignition switch to LOCK.
Airbag
(b) Disconnect negative (-) terminal cable from the battery,
Spiral Sensor and wait at least for 90 seconds.
Cable Assembly (c) Connect the steering wheel pad connector.
D Squib
(d) Connect negative (-) terminal cable to the battery, and
wait at least for 2 seconds.
ACC ON CHECK:
(a) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
or
(b) Clear the DTC stored in memory
DLC1 DTC B0102/11 (See step 5 on page DI-358 ).
(c) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(d) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
E1 Tc
(e) Check the DTC (See page DI-358 ).
H01003 OK:
AB0118 AB0119
R13006 W02042 H01128 DTC B0102/11 is not output.
HINT:
Codes other than code B0102/11 may be output at this time, but
they are not relevant to this check.
NG Replace steering wheel pad.
OK
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check. If the malfunctioning part can not be
detected by the simulation method, replace all SRS components including the wire harness.
2001 SIENNA (RM787U)
Author : Date : 536
DI-383
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
5 Check spiral cable.
PREPARATION:
Disconnect the connector between the airbag sensor assembly
Airbag and the spiral cable.
Spiral Sensor CHECK:
Cable Assembly
D Squib For the connector (on the spiral cable side) between the steer-
ing wheel pad and the spiral cable, measure the resistance be-
tween D+ and body ground.
OK:
Resistance: 1 M or Higher
D+
(-) (+)
H01000
H02200
NG Repair or replace spiral cable.
H02145
OK
6 Check harness between airbag sensor assembly and spiral cable.
CHECK:
For the connector (on the spiral cable side) between the spiral
cable and the airbag sensor assembly, measure the resistance
Spiral Airbag between D+ and body ground.
Sensor
Cable Assembly
OK:
D Squib Resistance: 1 M or Higher
D+
(-) (+)
H01004
R14301 H06304
NG Repair or replace harness between airbag sen-
sor assembly and spiral cable.
OK
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check. If the malfunctioning part can not be
detected by the simulation method, replace all SRS components including the wire harness.
2001 SIENNA (RM787U)
Author : Date : 537
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