AB0119
H01298
H01299
(-)
(+)
ON
Airbag Sensor Assembly
ACC
IG2
-
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI-453
607
Author:
Date:
2001 SIENNA (RM787U)
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
Airbag sensor assembly malfunction
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
).
2
Check voltage at IG2 and ACC of airbag sensor assembly.
CHECK:
(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
connector.
OK:
Voltage: 10 - 14 V
NG
Check that an abnormality occurs on the battery
and charging system.
OK
DI4D8-06
