PREVOST H3-45 VIP Owner's Manual page 162

5-40 Other Features
PROBLEM
The slide-out does not extend.
The slide-out does not retract.
When extending, the slide-out
stops after having extended by
1 inch.
Transmission DRIVE range
or REVERSE cannot
selected (the slide-out telltale
light is illuminating).
CAUSE
The parking brake is not seen
by the controller as being
applied;
Not enough air pressure in the
accessory air tank to permit
proper operation of the vacuum
generator;
Faulty vacuum
connection to the
generator open, seal deflating
valve solenoid open circuit;
I/O-B module output defective,
regulated 5- volt
sensors shorted to ground, "out
limit" sensor shorted to ground,
connection to
negative relay solenoid open
circuit;
Not enough air pressure in the
accessory air tank to permit
proper operation of the vacuum
generator;
Faulty vacuum
connection to the
generator open, seal deflating
valve solenoid open circuit;
I/O-B module output defective,
"in limit" sensor shorted to
ground, connection to the motor
positive relay solenoid open
circuit;
The security pin valve solenoid
circuit is shorted to (+) 24-volt
and the pin remains engaged;
Slide-out not in full "in" position;
be
Faulty "in limit" sensor. The
slide- out is retracted but the
controller doesn't not see it as
retracted.
PA-1619 Owner's Manual H3-45 VIP
CORRECTIVE ACTION
Make sure the parking brake is applied.
Confirm parking brake application with the
parking brake light on the telltale panel.
Run the engine at fast idle a few minutes to
increase air pressure in the accessory air tank
and try again.
Turn the relieving shut- off valve handle
clockwise to deflate the inflatable seal,
generator,
disconnect the pressure transducer. Do not
vacuum
forget to reconnect the pressure transducer
and to close the relieving shut- off valve.
Failure to do so could damage the seal and
lead to water infiltration;
supply to
Operate the slide-out with the manual override
procedures.
the motor
Run the engine at fast idle a few minutes to
increase air pressure in the accessory air tank
and try again.
Turn the relieving shut- off valve handle
clockwise to deflate the inflatable seal,
generator,
disconnect
vacuum
CAUTION, do not forget to reconnect the
pressure transducer and to close the relieving
shut-off valve. Failure to do so could damage
the seal and lead to water infiltration;
Operate the slide-out with the manual override
procedures.
Disconnect air supply from the safety pin
cylinder;
Retract slide-out.
Confirm that all slide-outs are retracted. On
the slide-out control panel, disconnect the 5
pins green connector on the I/O-B module to
disable the transmission inhibit. CAUTION,
this is a temporary measure, the vehicle must
be serviced as soon as possible.
the pressure transducer.