FUEL
SYSTEM
14 - 7
when
the vehicle is in overdrive, the transmission
will
be downshifted. The transmission thermo-switch
opens
at
134°C
(273°F).
The thermo-switch
will
close
once
the transmission
fluid
temperature drops to
116°C
(240°F).
•
The engine controller
will
turn
on the water-in-
fuel
lamp if a signal is received
from
the water-in-
fuel
sensor.
ACCELERATION
•
The vehicle distance
(speed)
sensor
and throttle po-
sition
sensor
inputs are used to control transmission
overdrive
operation.
•
If the coolant temperature switch is open, the
transmission
will
not be allowed to enter overdrive
(automatic transmission). The switch
opens
when
coolant temperature is below 16°C
(60°F).
•
If intake
manifold
air temperature is below 12°C
(54°F),
the KSB solenoid
will
be energized through
the air temperature switch. The solenoid remains en-
ergized
until
the air temperature switch
opens.
The
switch
opens
when intake
manifold
air temperature
is
above 16°C
(60°F).
•
If the transmission thermo-switch is open, the
transmission
will
not be allowed to enter into over-
drive
(automatic transmission). If the switch
opens
when
the vehicle is in overdrive, the transmission
will
be downshifted. The transmission thermo-switch
opens
at
134°C
(273°F).
The thermo-switch
will
close
once
transmission
fluid
temperature drops to 116°C
(240°F).
•
If the
speed
control system
resume/accelerate
func-
tion
is being used, the engine controller
will
only
al-
low
the vehicle to
accelerate
at a predetermined rate.
If
a
speed
control has
been
set and the resume/accel-
erate
button is momentarily pushed in, the engine
controller
will
increase
vehicle
speed
by two miles
per hour.
• If
the
brakes
are applied, the engine controller
will
disable the
speed
control.
DECELERATION
•
The vehicle distance
(speed)
sensor
and throttle po-
sition
sensor
inputs are used to control transmission
overdrive
operation.
•
If the coolant temperature switch is open, the
transmission
will
not be allowed to enter overdrive
(automatic transmission). The switch
opens
when
coolant temperature is below 16°C
(60°F).
•
If the transmission thermo-switch is open, the
transmission
will
not be allowed to enter into over-
drive
(automatic transmission). If the switch
opens
when
the vehicle is in overdrive, the transmission
will
be downshifted. The transmission thermo-switch
opens
at
134°C
(273°F).
The thermo-switch
will
close
once
transmission
fluid
temperature drops to 116°C
(240°F).
•
If intake
manifold
air temperature is below 12°C
(54°F),
the KSB solenoid
will
be energized through
the air temperature switch. The solenoid remains en-
ergized
until
the air temperature switch
opens.
The
switch
opens
when intake
manifold
air temperature
is
above 16°C
(60°F).
•
If the
speed
control system
coast/set
function
is be-
ing
used, the engine controller
will
only
allow
the ve-
hicle
to
decelerate
at a predetermined rate. If the
coast/set
switch is pushed
while
the system is operat-
ing,
the controller
will
set
speed
control to the
rate
the vehicle is traveling at when the switch is re-
leased.
• If
the
brakes
are applied, the engine controller
will
disable the
speed
control.
IGNITION
SWITCH
OFF
•
When the
ignition
switch is turned to the off posi-
tion,
the engine controller
still
receives battery
volt-
age through the battery input. Battery voltage is
needed
to
keep
engine controller memory alive. The
memory
stores
fault
messages
and the TPS value
from
the previous Key-on.
To Next Page
Loading...
