TSRM/MK4 Supra/Repair Manual
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SRS/Supplemental Restraint System — Inspection Procedures, page 53

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p.054
Inspection Procedures — MK4 Supra Supplemental Restraint System, page 53
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Page text (OCR transcript)
RS–53
SUPPLEMENTAL RESTRAINT SYSTEM – TROUBLESHOOTING

INSPECTION PROCEDURES
[P] Preparation [C] Check

1 Preparation.

ON

Center Airbag Sensor Assembly

ACC  IG2

AB0119
RO5262

P (1) Turn ignition switch to LOCK.
(2) Disconnect center airbag sensor assembly con–
nector.
(3) Turn ignition switch ON. But do not start engine.
(4) Measure voltage at IG2 or ACC on connector
wire harness side of center airbag sensor as–
sembly and operate electric system (defogger,
wiper, headlight, heater blower, etc.).
Voltage: 6 V — 11.5 V at IG2 and ACC.
(5) Turn electric system switch OFF.
(6) Turn ignition switch to LOCK.
(7) Remove voltmeter and connect center sensor
assembly connector.

2 Does SRS warning light turn off?

ON

AB0119
AB0234

P Turn ignition switch ON.

C Operate electric system checked in [1] (4) and
check that SRA warning light goes off.

Turn ignition switch ON.

YES

NO Check diagnostic trouble code, and if a malfunction code is output, perform troubleshooting according to malfunction code. If a normal code is output, replace center airbag sensor assembly.

Check battery and charging system.
(See charging system section)