Master Warning Light - Toyota Supra User Booklet

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3. Master Warning Light

The master warning light is connected to the ECUs and sensors for all of the systems on the vehicle, as are the rest
of the warning lights. In case any malfunction occurs, signals are output from any of these systems to turn on the
corresponding warning light and the master warning light. After that system reverts to normal operation, the light
will turn off after the ignition switch is turned off.
Wiring DiagramA
The warning lights which may cause the master warning light to come on.
BODY ELECTRICAL — METER