5-5
NOTE:
• Before driving, turn OFF the engine warm-up
switch. This deactivates the exhaust brake.
• The exhaust brake is used when the vehicle is
not moving to make the engine warm up more
quickly and to make the heater work more effec-
tively on cold days.
• When the exhaust brake is turned ON, the
engine’s idle speed increases automatically. As
a result, the coolant warms up more quickly.
CAUTION
• Be sure to set the engine idle control to the
AUTO position while driving. Driving with the
engine idle control in any other position can
cause abrupt startups or premature clutch
wear.
• Turn the engine idle control gently. Forcing it
could damage the internal mechanism.
• If the idle speed is set too low, the engine
may become extremely noisy. Make sure the
idle speed is correct.
NOTE:
If the engine idle control is used to increase engine
speed while the engine warm-up switch is ON, the
engine may produce black smoke. Before turning
ON the engine warm-up switch, be sure to set the
engine idle control to AUTO.
• Automatic control
Engine speed is automatically controlled by moni-
toring the engine coolant temperature. The engine
speed automatically decreases as the coolant tem-
perature rises.
• Manual control
Turn the dial on the engine idle control clockwise to
increase engine speed.
Turn it counterclockwise to decrease engine speed.
While driving, keep the engine idle control in the
AUTO position.
Engine idle control
WARNING
Do not attempt to use the engine idle control
to increase engine speed while the vehicle is
in motion. It will be impossible to control the
vehicle’s speed using the accelerator pedal.
This could cause an injury accident or loss of
life.
Engine idle speed
625 to 675 rpm
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