Engine Coolant Temperature
Warning Light
Malfunction Indicator Lamp
(Service Engine Soon Light)
This red light tells you that
the engine has overheated.
You should stop the car and
turn the engine
off
as soon
as possible.
A
warning
chime should also sound if
this light comes on.
SERVICE
ENGINE
SOON
Your Cadillac is equipped
i
with a computer which
monitors operation
of
the
l
fuel, ignition and emission
1
control systems.
As
a
check, the light should come on for a few seconds
when you start your engine.
In
the section “Problems on
the Road,” this manual explains what to
do.
See “Engine
Overheating”
in
the Index.
This system is called
OBD
I1
(On-Board
Diagnostics-Second Generation) and is intended
to assure that emissions are at acceptable levels for
the life of the vehicle, helping
to
produce a cleaner
environment. (In Canada, OBD
I1
is replaced by
Enhanced Diagnostics.) The SERVICE ENGINE
SOON
light comes on to indicate that there is a problem and
service is required. Malfunctions often will be indicated
by the system before any problem is apparent, which
may prevent more serious damage to your vehicle. This
system is also designed to assist your service technician
in correctly diagnosing any malfunction.
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