R14285
AB0119
H00021
Airbag Sensor Assembly
ON
IG2
ACC
(+)
(
−
)
−
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI
−
265
1996 LAND CRUISER (RM451U)
DTC
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 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 airbag sensor assembly is detected.
DTC No.
DTC Detection Condition
Trouble Area
31
S
Airbag sensor assembly malfunction
S
Airbag sensor assembly
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
−
271
).
2
Check voltage at IG2 and ACC of airbag sensor assembly.
PREPARATION:
Turn ignition switch ON.
CHECK:
Measure voltage between terminals IG2 and ACC of airbag
sensor assembly and body ground.
OK:
Voltage: Below 16 V
NG
Check battery and charging system (See page
CH
−
2
).
OK
DI5QA
−
03
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Version 1.00 - 12/21/2010
