Mazda B2300 2001 Manual page 198

Driving Your Mazda
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Check Gauge Light
This light comes on when the key is in
the ON position and:
1. The engine coolant temperature is
high.
2. The engine oil pressure is low.
3. The fuel level is near empty.
This light will also illuminate for several
seconds after the ignition is turned to the
ON position and serves as a notice that
the system needs your attention and to
check the engine coolant temperature
gauge, the engine oil pressure gauge,
and the fuel level gauge. Please see the
Engine Temperature Gauge, Engine Oil
Pressure Gauge, or Fuel Gauge in this
section for more information.
5-62
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Malfunction
Indicator Light
Your vehicle is equipped with a compu-
ter that monitors the engine's emission
control system. This system is commonly
known as the On Board Diagnostics
System (OBD II). This OBD II system
protects the environment by ensuring that
your vehicle continues to meet govern-
ment emission standards. The OBD II
system also assists the service technician
in properly servicing your vehicle.
The malfunction indicator light illumi-
nates when the ignition is first turned to
the ON position to check the bulb. If it
comes on after the engine is started, one
of the engine's emission control systems
may be malfunctioning. The light may
illuminate without a driveability concern
being noted. The vehicle will usually be
drivable and will not require towing.
If the check engine light turns on solid:
Temporary malfunctions may cause your
malfunction indicator light to illumi-
nate. Examples are:
1. The vehicle has run out of fuel. (The
engine may misfire or run poorly.)
2. Poor fuel quality or water in the fuel.
3. The fuel cap may not have been
securely tightened.