Ford Ranger EV (2001 year). Manual — part 81
412-02-29
412-02-29
Heating and Ventilation
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST R: RECIRCULATION FUNCTION DOES NOT OPERATE
TEST STEP
ACTION TO TAKE
•
Is the outside/recirculation door in the recirculation position?
No =
GO to R4.
R4 CHECK OPERATION OF RECIRCULATION VACUUM
SOLENOID
•
With key ON, set the mode select knob to the FLOOR/PANEL position. Yes =
•
Enter the interface adapter assembly (IAA) module active command
No =
GO to R5.
mode CLIMATE CONTROL COMMAND and set the active commands
MAINT VAC to YES and RECIR SOL to ON.
•
Check the position of the outside/recirculation door.
•
Is the outside/recirculation door in the recirculation position?
R5 CHECK POWER TO IN-LINE C2999
•
With key OFF, disconnect in-line C2999.
Yes =
RECONNECT in-line
C2999. GO to R9.
•
With key ON, measure the voltage between pin 8 (Y/LG wire) and pin 7
No =
GO to R6.
(BK wire) on in-line C2999.
•
Is the voltage greater than 10 volts?
R6 CHECK GROUND TO IN-LINE C2999
•
With key OFF, measure the resistance between pin 7 (BK wire) on
Yes =
GO to R7.
in-line C2999 and ground.
•
Is the resistance less than 5 ohms?
No =
REPAIR the BK wire.
R7 CHECK CIRCUIT 3052 (Y/LG) FOR OPEN
•
Connect 104-Pin Breakout Box (BOB) to IAA module C1945; leave IAA Yes =
GO to R8.
module disconnected.
•
With key OFF, measure the resistance of the Y/LG wire between pin 8
No =
REPAIR the Y/LG wire.
on in-line C2999 and BOB pin 35.
•
Is the resistance less than 5 ohms?
R8 CHECK CIRCUIT 3052 (Y/LG) FOR SHORT TO GROUND
•
With key OFF, measure the resistance between BOB pin 35 and ground
Yes =
REPLACE the IAA module.
(BOB pin 80).
REFER to
•
Is the resistance greater than 10,000 ohms?
No =
REPAIR the Y/LG wire.
R9 CHECK POWER TO RECIRCULATION VACUUM SOLENOID
•
With key OFF, disconnect recirculation vacuum solenoid C2994.
Yes =
GO to R11.
•
With key ON, measure the voltage between the Y/LG wire and BK wire
No =
GO to R10.
on recirculation vacuum solenoid C2994.
•
Is the voltage greater than 10 volts?
R10 CHECK GROUND TO RECIRCULATION VACUUM SOLENOID
•
With key OFF, measure the resistance between the BK wire on
Yes =
GO to R11.
recirculation vacuum solenoid C2994 and ground.
•
Is the resistance less than 5 ohms?
No =
REPAIR the BK wire.
R11 CHECK VACUUM FROM RECIRCULATION VACUUM
SOLENOID
•
With key ON, set the mode select knob to the OFF position, disconnect
Yes =
CHECK the
the white vacuum line from the recirculation vacuum solenoid, and check
fresh/recirculation door
for vacuum.
vacuum motor for vacuum
leak. REPLACE if
necessary.
•
Is vacuum present?
No =
GO to R12.
R12 CHECK VACUUM TO RECIRCULATION VACUUM SOLENOID
(Continued)
412-02-30
412-02-30
Heating and Ventilation
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST R: RECIRCULATION FUNCTION DOES NOT OPERATE
TEST STEP
ACTION TO TAKE
•
With key ON, disconnect the black vacuum line from the recirculation
Yes =
CHECK the white vacuum
vacuum solenoid and check for vacuum.
line to the fresh/recirculation
door vacuum motor for
blockage. REPAIR as
necessary. If OK, REPLACE
the recirculation vacuum
solenoid.
•
Is vacuum present?
No =
GO to Pinpoint Test P.
R13 CHECK CIRCUIT 3053 (BR/W) FOR OPEN
•
Connect 104-Pin Breakout Box (BOB) to IAA module C1945; leave IAA Yes =
GO to R14.
module disconnected.
•
With key OFF, disconnect fresh/recirculation select switch C2998 and
No =
REPAIR the BR/W wire.
measure the resistance of the BR/W wire between pin 4 on
fresh/recirculation select switch C2998 and BOB pin 63.
•
Is the resistance less than 5 ohms?
R14 CHECK CIRCUIT 3053 (BR/W) FOR SHORT TO GROUND
•
With key OFF, measure the resistance between BOB pin 63 and ground
Yes =
GO to R15.
(BOB pin 80).
•
Is the resistance greater than 10,000 ohms?
No =
REPAIR the BR/W wire.
R15 CHECK GROUND TO FRESH/RECIRCULATION SELECT
SWITCH
•
With key OFF, measure the resistance between pin 3 (BK wire) on
Yes =
GO to R16.
fresh/recirculation select switch C2998 and ground.
•
Is the resistance less than 5 ohms?
No =
REPAIR the BK wire.
R16 CHECK FRESH/RECIRCULATION SELECT SWITCH
•
Measure the resistance between the BR/W wire terminal and BK wire
Yes =
REPLACE the IAA module.
terminal on the fresh/recirculation select switch with the switch
REFER to
depressed.
•
Is the resistance less than 5 ohms?
No =
REPLACE the
fresh/recirculation select
switch.
R17 CHECK POWER TO FRESH/RECIRCULATION SELECT
SWITCH LED
•
With key OFF, disconnect fresh/recirculation select switch C2998.
Yes =
REPLACE the
•
With key ON, measure the voltage between the pin 1 (BK/LG wire) and
fresh/recirculation select
pin 3 (BK wire) on fresh/recirculation select switch C2998.
switch.
•
Is the voltage greater than 10 volts?
No =
GO to R18.
R18 CHECK GROUND TO FRESH/RECIRCULATION SELECT
SWITCH
•
With key OFF, measure the resistance between pin 3 (BK wire) on
Yes =
GO to R19.
fresh/recirculation select switch C2998 and ground.
•
Is the resistance less than 5 ohms?
No =
REPAIR the BK wire.
R19 CHECK CIRCUIT 3054 (BK/LG) FOR OPEN
•
Connect 104-Pin Breakout Box (BOB) to IAA module C1945; leave IAA Yes =
REPLACE the IAA module.
module disconnected.
REFER to
•
With key OFF, measure the resistance of the BK/LG wire between pin 1
No =
REPAIR the BK/LG wire.
on fresh/recirculation select switch C2998 and BOB pin 66.
•
Is the resistance less than 5 ohms?
412-02-31
412-02-31
Heating and Ventilation
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST S: PRE-HEAT FUNCTION DOES NOT OPERATE (POSTAL RANGER EV ONLY)
TEST STEP
ACTION TO TAKE
S1 CHECK PRE-HEAT FOR CORRECT CONDITIONS
•
Key OFF.
Yes =
GO to S2.
•
Power Control Station (PCS) in ACTIVE mode.
•
Vehicle Plugged in.
No =
CORRECT the conditions.
•
Outside ambient temperature <18
°
C (64
°
F)
•
Are the conditions acceptable?
S2 CHECK PRE-HEAT SWITCH
•
Key OFF.
Yes =
GO to S3.
•
Depress pre-heat switch.
•
Does the bulb illuminate?
No =
REPAIR pre-heat switch
and/or circuit(s).
S3 CHECK CIRCUIT X(LG/BK) FOR POWER
•
Key OFF.
Yes =
GO to S4.
•
Disconnect pre-heat switch C262, and measure the voltage between
circuit X(LG/BK) and ground.
•
Is the voltage greater than 0 volts?
No =
REPAIR the circuit.
S4 CHECK THE PRE-HEAT SWITCH
•
Key OFF.
Yes =
GO to S5.
•
Depress the button.
•
Check circuit X(LG/BK) and circuit W(RD/LG).
No =
INSTALL a new switch.
•
Is the resistance less than 3 ohms?
S5 CHECK CIRCUIT W(RD/LG) FOR POWER
•
Key OFF.
Yes =
GO to S6.
•
Disconnect pre-heat C262 and measure the voltage between circuit
W(RD/LG) and ground.
•
Is the voltage greater than 0 volts?
No =
REPAIR the circuit.
S6 CHECK THE PRE-HEAT INVERTER RELAY
•
Disconnect the pre-heat inverter relay C135.
Yes =
GO to S7.
•
Carry out the component test on the pre-heat inverter relay. Refer to the
wiring diagrams section for component testing.
•
Is the pre-heat relay OK?
No =
INSTALL a new relay.
S7 CHECK CIRCUIT Y(WH) POWER
•
Key OFF.
Yes =
GO to S8.
•
Depress the pre-heat switch button.
•
Is the voltage greater than 0 volts?
No =
REPAIR the circuit.
S8 CHECK CIRCUIT Y(BK) FOR POWER
•
Key OFF.
Yes =
INSTALL a new Interface
•
Disconnect the Interface Adapter Assembly C1945 and measure the
Adapter Assembly (IAA).
voltage between Y(BK) and ground.
•
Is the voltage greater than 0 volts?
No =
REPAIR the circuit.
412-02-32
412-02-32
Heating and Ventilation
REMOVAL AND INSTALLATION
PTC Heater Core —Electric Ranger
Removal
1. Disconnect the traction battery auxiliary load
high-voltage connector. Refer to
2. Remove the instrument panel. Refer to the 2001
Ranger Workshop Manual.
3. NOTE: The evaporator housing nut is located
inside the vehicle, on the lower bulkhead, on
the passenger side.
Remove the evaporator housing nut.
4. Position the reservoir aside.
1 Remove the nuts.
2 Remove the bolts.
3 Position the reservoir toward the front of
the vehicle.
5. Remove the high-voltage power distribution box
cover.
1 Remove the screws.
2 Remove the cover.
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