Center Airbag Sensor Assembly Malfunction - Toyota T100 1996 Service Manual

DI−394
DTC
CIRCUIT DESCRIPTION
The center airbag sensor assembly consists of a center airbag sensor, safing sensor, drive circuit, diagnosis
circuit and ignition control, etc.
It receives signals from the airbag sensors, judges whether or not the SRS must be activated, and diagnosis
system malfunction.
DTC 31 is recorded when occurrence of a malfunction in the center airbag sensor assembly is detected.
DTC No.
31 S Center airbag sensor assembly malfunction
INSPECTION PROCEDURE
HINT:
When a malfunction code other than code 31 is displayed at the same time, first repair the malfunction indi-
cated by the malfunction code other than code 31.
1 Preparation (See step 1 on page DI−396)
2 Check voltage at IG2 and ACC of center airbag sensor assembly.
Center Airbag
ON
Sensor Assembly
ACC
(−)
(+)
OK
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS
31

Center Airbag Sensor Assembly Malfunction

DTC Detecting Condition
IG2
H18114
− SUPPLEMENTAL RESTRAINT SYSTEM
S Center airbag sensor assembly
PREPARATION:
(a) Disconnect center airbag sensor assembly connector.
(b) Turn ignition switch ON.
CHECK:
Measure voltage between terminals IG
bag sensor assembly and body ground.
OK:
Voltage: Below 16 V
NG Check battery and charging system.
(3RZ−FE: See page CH−2)
(5VZ−FE: See page CH−1)
Trouble Area
and ACC of center air-
2
DI0XW−02