2004 MITSUBISHI ENDEAVOR Ac compressor

ADJUSTMENT 1. Select a quiet area for testing. Duplicate conditions as much as possible.
Switch the compressor on and off several times to clearly identify compressor
noise. To duplicate high ambient conditions (high head pressure), restrict air
flow through the condenser. Install a manifold gauge set to make sure
discharge pressure doesn't exceed 2,070 kPa (300.2 psi).
2. Tighten all compressor mounting bolts, clutch mounting bolt, and compressor
drive belt. Check to assure clutch coil is tight (no rotation or wobble).
3. Check refrigerant hoses for rubbing or interference that can cause unusual
noises.
4. Check refrigerant charge. (Refer to
CHARGING
and
DISCHARGING
).
5. Recheck compressor noise as in Step 1 .
6. If noise still exists, loosen compressor mounting bolts and retighten. Repeat
Step 1 .
7. If noise continues, replace compressor and repeat from Step 1 .
POWER RELAY CHECK FRONT BLOWER RELAY CONTINUITY CHECK
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

A/C COMPRESSOR CLUTCH RELAY CONTINUITY CHECK BATTERY VOLTAGE
TESTER
CONNECTION
SPECIFIED
CONDITION
Not applied
4 - 5
Open circuit
Connect terminal 1 to the
positive battery terminal

Connect terminal 3 to the
negative battery terminal
4 - 5
Less than 2 ohms

2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

Fig. 278: Identifying A/C Compressor Clutch Relay

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

A/C COMPRESSOR CLUTCH RELAY CONTINUITY CHART

FAN CONTROL RELAY CONTINUITY CHECK BATTERY VOLTAGE
TESTER
CONNECTION
SPECIFIED
CONDITION
Not applied
1 - 4
Open circuit
Connect terminal 2 to the
positive battery terminal

Connect terminal 3 to the
negative battery terminal
1 - 4
Less than 2 ohms

2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

Fig. 281: Removing And Installing Heater Uni
t
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

REMOVAL SERVICE POINTS << A >> SUCTION PIPE AND LIQUID PIPE DISCONNECTION To prevent the entry of dust or other foreign bodies, plug the dismantled hose and
the nipples of the expansion valves. Fig. 282: Identifying Connectors

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.CAUTION: As the compressor oil and receiver are highly
moisture absorbent, use a non-porous material to
plug the hose and nipples.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

Measure the resistance between the sensor terminals under at least two
temperatures. The resistance values should meet the values shown. Fig. 295: Temperature Resistance Graph

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

COMPRESSOR ASSEMBLY AND TENSION PULLEY REMOVAL AND INSTALLATION NOTE: The temperature should be within the shown range.
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

Fig. 296: Pre Removal And Post Installation Operation Chart

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig. 297: Removing And Installing Compressor Assembly

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

REMOVAL SERVICE POINTS << A >> FLEXIBLE SUCTION HOSE AND FLEXIBLE DISCHARGE HOSE DISCONNECTION
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

To prevent the entry of dust or other foreign bodies, plug the dismantled hoses and
compressor nipples. << B >> COMPRESSOR REMOVAL Take care not to spill any compressor oil when removing the compressor. INSTALLATION SERVICE POINT >> A << COMPRESSOR INSTALLATION If a new compressor is installed, first adjust the amount of oil according to the
procedures described below, and then install the compressor.
1. Measure the amount [X cm
3 (X fl.oz) of oil within the removed compressor.
2. Drain (from the new compressor) the amount of oil calculated according to the
following formula, and then install the new compressor.
New compressor oil amount = 140cm
2 (4.7 fl.oz)
140 cm
3 - X cm
3 = Y cm
3 (4.7 fl.oz. - X fl.oz. = Y fl.oz)
Quantity:

Eva
porator
: 60 c
m3 (2.0 fl.oz
)
CAUTION: As the compressor oil and receiver are highly
moisture absorbent, use a non-porous material to
plug the hose and nipples.
NOTE:
Y cm
3 (Y fl.oz) indicates the amount of oil in the refrigerant
line, the condenser, the evaporator, etc.
NOTE: When replacing the following parts at the same times as the
compressor, subtract the rated oil amount of each part from
Y cm3 (Y fl.oz) and discharge from the new compressor.

2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

Condenser:
15 cm
3 (0.5 fl.oz)
Suction hose:
10 cm
3 (0.3 fl.oz)
Receiver:
10 cm
3 (0.3 fl.oz)
INSPECTION COMPRESSOR AIR CONDITIONING COMPRESSOR CLUTCH OPERATION CHECK Connect the compressor connector terminal to the battery positive (+) terminal and
ground the battery's negative (-) terminal to the compressor unit. At that time, the
air conditioning compressor clutch should make a definite operating sound. Fig. 298: Checking A/C Compressor Clutch

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

DISASSEMBLY AND ASSEMBLY
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor