Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 05 rs cib11003
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DI-453
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
DI4D8-06
DTC B1100/31 Airbag Sensor Assembly Malfunction
CIRCUIT DESCRIPTION
The airbag sensor assembly consists of a airbag sensor, safing sensor, drive circuit, diagnosis circuit and
ignition control, etc.
It receives signals from the airbag sensor, judges whether or not the SRS must be activated, and detects
diagnosis system malfunction.
DTC B1100/31 is recorded when occurrence of a malfunction in the airbag sensor assembly is detected.
DTC No. DTC Detecting Condition Trouble Area
B1100/31 S Airbag sensor assembly malfunction S Airbag sensor assembly
INSPECTION PROCEDURE
HINT:
When a malfunction code other than code B1100/31 is displayed at the same time, first repair the malfunction
indicated by the malfunction code other than code B1100/31.
1 Prepare for inspection (See step 1 on page DI-486 ).
2 Check voltage at IG2 and ACC of airbag sensor assembly.
Airbag Sensor Assembly CHECK:
ON
(a) Turn the ignition switch to ON.
(b) Measure the voltage between body ground and each of
terminals IG2 and ACC of the airbag sensor assembly
ACC IG2 connector.
(-) (+) OK:
Voltage: 10 - 14 V
AB0119
H01298 H01299 NG Check that an abnormality occurs on the battery
and charging system.
OK
2001 SIENNA (RM787U)
Author : Date : 607
DI-454
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
3 Is DTC B1100/31 output again?
PREPARATION:
ACC ON
Clear the DTC (See step 5 on page DI-358 ).
CHECK:
(a) Turn the ignition switch to LOCK, and wait at least for 20
or
seconds.
(b) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
DLC1 DTC B1100/31 (c) Repeat operation in step (a) and (b) at least 5 times.
(d) Check the DTC (See page DI-358 ).
HINT:
Codes other than code B1100/31 may be output at this time, but
E1 Tc they are not relevant to this check.
AB0118 AB0119
R13006 FI1394 H00022 NO Using simulation method, reproduce malfunc-
tion symptoms (See page IN-21 ).
YES
Replace airbag sensor assembly.
2001 SIENNA (RM787U)
Author : Date : 608
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