Workshop Manual

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
1A–31
Air Conditioning System
Individual Inspection
Triple Pressure Switch (V6, A/T)
1.Disconnect the connector and check for continuity
between pressure switch side connector terminals (1)
and (2).
2.Reconnect the connector to activate the A/C switch,
and check to see if there is continuity between the
chassis side connector terminals (3) and (4) and the
fan operates.
875RY00010
Condenser Fan
1.Disconnect the condenser fan connector.
2.Connect the battery positive terminal to the
condenser fan side connector terminal No.C-16-1
and negative to the No.C-16-2.
3.Check that condenser fan is rotating correctly.
875R200002
General Repair Procedure
Precautions For Replacement or Repair of
Air Conditioning Parts
There are certain procedures, practices and precautions
that should be followed when servicing air conditioning
systems:
B Keep your work area clean.
B Always wear safety goggles and protective gloves
when working on refrigerant systems.
B Beware of the danger of carbon monoxide fumes
caused by running the engine.
B Beware of discharged refrigerant in enclosed or
improperly ventilated garages.
B Always disconnect the negative battery cable and
discharge and recover the refrigerant whenever
repairing the air conditioning system.
B When discharging and recovering the refrigerant, do
not allow refrigerant to discharge too fast; it will draw
compressor oil out of the system.
B Keep moisture and contaminants out of the system.
When disconnecting or removing any lines or parts,
use plugs or caps to close the fittings immediately.
Never remove the caps or plugs until the lines or parts
are reconnected or installed.
B When disconnecting or reconnecting the lines, use
two wrenches to support the line fitting, to prevent
from twisting or other damage.
B Always install new O-rings whenever a connection is
disassembled.
B Before connecting any hoses or lines, apply new
specified compressor oil to the O-rings.
B When removing and replacing any parts which
require discharging the refrigerant circuit, the
operations described in this section must be
performed in the following sequence:
1. Use the J-39500 (ACR
4
: HFC-134a Refrigerant
Recovery / Recycling / Recharging / System) or
equivalent to thoroughly discharge and recover the
refrigerant.
2. Remove and replace the defective part.
3. After evacuation, charge the air conditioning
system and check for leaks.