Ford Electric Ranger 2001 Manual page 322

412-02-28
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST Q: VACUUM PUMP CYCLES ON AND OFF WITHOUT BRAKE PEDAL ACTIVATION
(CLIMATE CONTROL VACUUM SYSTEM LEAK TEST)/INCORRECT AIRFLOW THROUGH CLIMATE
CONTROL OUTLETS
• With key ON, remove the blue vacuum line from the floor/defrost door
vacuum motor and plug the vacuum line.
• Monitor IAA module PID VACPRES for a change in vacuum pressure
after the vacuum pump shuts off.
• Does the vacuum level remain constant?
Q16 CHECK RED VACUUM LINE TO PANEL/DEFROST DOOR
VACUUM MOTOR
• With key ON, set the mode select knob to the PANEL/FLOOR position,
remove the red vacuum line from the panel/defrost door vacuum motor
and plug the vacuum line.
• Monitor IAA module PID VACPRES for a change in vacuum pressure
after the vacuum pump shuts off.
• Does the vacuum level remain constant?
Q17 CHECK GREEN VACUUM LINE TO RECIRCULATION
VACUUM SOLENOID
• With key ON, set the mode select knob to the OFF position, disconnect
the green vacuum line from the recirculation vacuum solenoid, and plug
the vacuum line.
• Monitor IAA module PID VACPRES for a change in vacuum pressure
after the vacuum pump shuts off.
• Does the vacuum level remain constant?
PINPOINT TEST R: RECIRCULATION FUNCTION DOES NOT OPERATE
R1 CHECK RECIRCULATION FUNCTION (FRESH POSITION)
• With key ON, set the mode select knob to the PANEL/FLOOR position
and check the position of the outside/recirculation door.
• Is the outside/recirculation door in the fresh position?
R2 CHECK FRESH/RECIRCULATION DOOR VACUUM MOTOR
ACTUATOR
• With key ON, set the mode select knob to the PANEL/FLOOR position,
disconnect the white vacuum line from the fresh/recirculation door
vacuum motor, and check the position of the outside/recirculation door.
• Is the outside/recirculation door in the fresh position?
R3 CHECK RECIRCULATION FUNCTION (RECIRCULATION
POSITION)
NOTE: If the LED on the fresh/recirculation select switch does not
illuminate when the fresh/recirculation select switch is depressed, GO to
R17.
• With key ON, set the mode select knob to the PANEL/FLOOR position,
depress the fresh/recirculation select switch, and check the position of the
outside/recirculation door.
(Continued)
Heating and Ventilation
TEST STEP
TEST STEP
ACTION TO TAKE
Yes = RECONNECT the blue
vacuum line to the
floor/defrost door vacuum
motor. GO to Q16.
No = REPLACE the heater
plenum vacuum line
assembly.
Yes = RECONNECT the red
vacuum line to the
panel/defrost door vacuum
motor. GO to Q17.
No = REPLACE the heater
plenum vacuum line
assembly.
Yes = System OK. CHECK for
intermittent vacuum line
connections.
No = REPLACE the heater
plenum vacuum line
assembly.
ACTION TO TAKE
GO to R3.
Yes =
GO to R2.
No =
Yes = GO to R3.
No = CHECK for binding
actuator/linkage. If OK,
CHECK for stuck
recirculation vacuum
solenoid. REPAIR as
necessary.
Yes = System OK. CHECK
wiring/vacuum lines for
intermittent connections.
2001 Ranger EV, 01/2001
412-02-28