Ford Ranger EV (2001 year). Manual — part 86
412-03-11
412-03-11
Air Conditioning
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST F: A/C COMPRESSOR DOES NOT OPERATE (NO COOLING)
TEST STEP
ACTION TO TAKE
•
With key OFF, disconnect IAA module from BOB; leave BOB
Yes =
REPLACE the IAA module.
connected to IAA module C1945.
REFER to
•
With key OFF, disconnect A/C inverter motor controller (IMC) C1947
No =
REPAIR the R/PK wire.
and measure the resistance between BOB pin 46 and ground (BOB pin
80).
•
Is the resistance greater than 10,000 ohms?
F9 CHECK CIRCUIT 3026 (R/PK) FOR OPEN
•
With key OFF, disconnect A/C inverter motor controller (IMC) C1947
Yes =
GO to F10.
and measure the resistance of the R/PK wire between pin 8 on A/C IMC
C1947 and BOB pin 46.
•
Is the resistance less than 5 ohms?
No =
REPAIR the R/PK wire.
F10 CHECK HIGH-VOLTAGE POWER TO A/C IMC
•
Disconnect the 12-volt auxiliary battery negative cable.
Yes =
REPLACE the A/C IMC.
•
Remove the high-voltage power distribution box (HVPDB) cover.
No =
GO to F11.
WARNING: The following test steps contain high-voltage
procedures. High-voltage insulated safety gloves and face shield must
be worn when performing the following steps. Failure to follow this
warning may result in severe personal injury or death.
•
Disconnect HVPDB A/C IMC high-voltage C1917F.
•
Reinstall the HVPDB cover.
•
Reconnect the 12-volt auxiliary battery negative cable.
•
With key ON, measure the voltage between circuit 3150 (DB wire) and
circuit 3151 (W wire) on HVPDB A/C IMC high-voltage C1917.
•
Is the voltage greater than 300 volts?
F11 CHECK HIGH-VOLTAGE FUSE
•
With key OFF, disconnect the 12-volt auxiliary battery negative cable.
Yes =
REPLACE the 25A A/C
fuse. GO to F12.
•
Disconnect high-voltage auxiliary load in-line C1935 on the traction
No =
REPLACE the HVPDB.
battery support tray.
REFER to
•
Disconnect all HVPDB high-voltage connectors.
or
•
Disconnect power steering assembly high-voltage C1895.
•
Measure the resistance of the 25A A/C fuse.
•
Is the resistance greater than 1,000 ohms?
F12 CHECK A/C IMC FOR SHORT
•
Connect the Capacitor Discharge Tool to the digital volt/ohmeter
Yes =
REPLACE the A/C IMC.
(DVOM) and set the DVOM to volts.
•
Connect the probes of the Capacitor Discharge Tool to circuit 3150 (DB
No =
GO to F13.
wire) and circuit 3151 (W wire) on HVPDB A/C IMC C1917M and
allow the voltage on the DVOM to discharge to 0 volt.
•
Measure the resistance between circuit 3150 (DB wire) and circuit 3151
(W wire) on HVPDB A/C IMC C1917M.
•
Is the resistance less than 30 ohms?
F13 CHECK HVPDB FOR SHORT
•
Measure the resistance between circuit 3150 (DB wire) and circuit 3151
Yes =
(W wire) on HVPDB A/C IMC high-voltage C1917F.
•
Is the resistance greater than 10,000 ohms?
No =
REPLACE the HVPDB.
REFER to
F14 CHECK SYSTEM
(Continued)
412-03-12
412-03-12
Air Conditioning
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST F: A/C COMPRESSOR DOES NOT OPERATE (NO COOLING)
TEST STEP
ACTION TO TAKE
•
With key OFF, reconnect A/C IMC C1947 and HVPDB A/C IMC
Yes =
REPLACE the A/C IMC.
high-voltage C1917.
REPLACE the 25A A/C
fuse. REFER to
Section
or
Section
•
With key ON, set the mode select knob to the A/C position, the
No =
System OK.
temperature control knob to full cool position, and the blower control
knob to HIGH speed position.
•
Does the 25A A/C high-voltage fuse fail again?
REMOVAL AND INSTALLATION
A/C Compressor
Removal
1. Disconnect the traction battery auxiliary load
high-voltage connector. Refer to
2. Evacuate the A/C system. For additional
information, refer to Section 412-00 of the
2001 Ranger Workshop Manual.
3. Remove the electric cooling fan.
1 Release the coolant hose from the clips.
2 Remove the bolts.
3 Disconnect the electrical connector.
4 Remove the fan.
4. Raise and support the vehicle. For additional
information, refer to
412-03-13
412-03-13
Air Conditioning
REMOVAL AND INSTALLATION (Continued)
5. NOTE: The low-voltage electrical connector is
shown, the high-voltage electrical connector is
behind the A/C compressor.
Disconnect the low and the high-voltage
electrical connectors at the A/C compressor.
6. Disconnect the traction battery charger electrical
connectors.
7. Remove the low side A/C line bolts.
8. Remove the high side A/C line bolts.
412-03-14
412-03-14
Air Conditioning
REMOVAL AND INSTALLATION (Continued)
9. NOTE: If the isometric bracket for the
compressor is excessively deteriorated, replace
it during compressor removal and installation.
Remove the four A/C compressor bolts.
10. Lower the vehicle.
11. Remove the A/C compressor.
•
Carefully feed the compressor electrical wire
down with the compressor.
Installation
1.
CAUTION: The compressor uses
Polyolester oil meeting Ford specification
WSS-M2C31-B. This oil is not compatible
with any other A/C oil.
If the service compressor has no warning
tag/label, then it has a full production (system)
charge of oil (170 cc) and the following steps
must be followed.
1 Flush the A/C system to remove all existing
oil.
2 Replace the accumulator.
3 Install the compressor.
2. If the service compressor has a warning
tag/label, then it has no oil charge and 30 cc of
Polyolester oil meeting Ford specification
WSS-M2C31-B must be added to the system
after compressor installation.
3.
CAUTION: Do not add any leak
detection dye to the A/C system.
To install, reverse the removal procedure.
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