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21. Malfunction Indicator Light
This light is part of an onboard diagnostic system
called OBD that monitors engine and automatic
transmission control systems. The light will illu-
minate when the key is in the ON position before engine
start. If the bulb does not come when turning the key
from OFF to ON, have the condition checked promptly.
Certain conditions such as a loose or missing gas cap,
poor fuel quality, etc. may illuminate the light after
engine start. The vehicle should be serviced if the light
stays on through several of your typical driving cycles. In
most situations the vehicle will drive normally and will
not require towing.
The Malfunction Indicator Light flashes to alert to serious
conditions that could lead to immediate loss of power or
severe catalytic converter damage. The vehicle should be
serviced as soon as possible if this occurs. (See page 399
for more information.)
22. Trac Off Indicator — If Equipped
This display indicator should illuminate for approxi-
mately four seconds as a bulb check when the ignition
switch is first turned ON.
The “TRAC OFF” Indicator will flash if the traction
control is in use.
The “TRAC OFF” Indicator will illuminate if:
•
The Traction Control switch has been used to turn
the system OFF.
•
There is a Traction Control System malfunction
•
The system has been deactivated to prevent damage
to the brake system due to overheated brake tem-
peratures.
NOTE: Extended heavy use of Traction Control may
cause the system to deactivate and turn on the TRAC and
the OFF indicators located in the instrument cluster.
210 UNDERSTANDING YOUR INSTRUMENT PANEL