2004 MITSUBISHI ENDEAVOR Ac pressure switch

Fig. 101: Installing Oil Filter

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>>E<< ENGINE OIL PRESSURE SWITCH 1. Apply 3M< SD >TM< /SD > AAD Part number 8672 or equivalent to the
thread of engine oil pressure switch.
CAUTION: Be careful not to block the oil passage with sealant.

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Overhaul - Endeavor

Fig. 102: Applying 3M AAD Part Number 8672 To Thread Of Engine Oil Pressure Switch

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2. Tighten the engine oil pressure switch together with the oil filter bracket to the
specified torque, using special tool MD998054.
Tightening torque: 10+/-2 N.m (87+/-17 in-lb)

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Overhaul - Endeavor

Fig. 103: Tightening Engine Oil Pressure Switch

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>>F<< OIL PAN, UPPER INSTALLATION 1. Clean both gasket surfaces of the upper oil pan and cylinder block.
2. Apply a 4 mm (0.2 inch) diameter bead of sealant. (Mitsubishi Genuine Parts
number MD970389 or equivalent) to the upper oil pan.
Apply sealant as indicated by the broken line in the illustration; the grooves
must be traced and the bolt holes must be surrounded with a bead of sealant.
CAUTION: When installing the upper oil pan, be sure not to
expel the sealant from the oil pan flange at

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Overhaul - Endeavor

When metering R-134a into the refrigeration system, keep the supply tank or cans
in an upright position. If the refrigerant container is on its side or upside down,
liquid refrigerant will enter the system and damage the compressor.
Refrigerant will tarnish bright metal and chrome surfaces, and in combination with
moisture can severely corrode all metal surfaces. OPERATION CONDENSER FAN AND RADIATOR FAN CONTROL For the operation of each fan, refer to
SYMPTOM CHART
.
COMPRESSOR CONTROL WHEN OPERATING THE AIR CONDITIONING SWITCH
The air thermo sensor, which senses the temperature of the air flowing out of
the evaporator, deactivates the compressor at 3°C (37.4°F) or below. The dual pressure switch turns OFF when the refrigerant pressure becomes
excessively high or low, thus protecting the compressor circuit. When the air thermo sensor is activated, and the ignition switch, blower switch,
and air conditioning switch are ON, the A/C compressor clutch relay is
energized.
WHEN OPERATING THE MODE SELECTION DIAL
The air conditioning will work when the mode selection dial is set to the
"Defroster" or "Defroster/foot" position, or the temperature control dial is set to
the "MAX A/C" position. In other dial positions, when the air conditioning
switch is turned on, the air conditioning will work.
A/C COMPRESSOR CLUTCH RELAY ON CONDITIONS
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

2. Turn the ignition switch to the "ON" position.
3. Check if the DTC is set.
4. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the check result satisfactory?

YES:
The procedure is complete.
NO:
Return to Step 1 .
Code No. B1031, B1032 A/C Pressure Sensor System Fig. 38: View A/C Pressure Sensor Circuit

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y of MITSUBISHI MOTOR SALES OF AMERICA
.

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

CURRENT TROUBLE
The A/C-ECU, the A/C pressure sensor or the connector(s) or wiring between
the two may be defective
PAST TROUBLE
If DTC B1031 or B1032 is stored as a past trouble, carry out diagnosis with
particular emphasis on wiring and connector(s) between the A/C-ECU and the
A/C pressure sensor. If the connectors and wiring are normal, and obviously
the ECU is the cause of the trouble, replace the ECU. If in doubt, do not
replace the ECU.
TROUBLESHOOTING HINT
Malfunction of connector. Malfunction of the harness. Malfunction of the A/C pressure sensor. Malfunction of the A/C-ECU.
DIAGNOSIS REQUIRED SPECIAL TOOL:

MB991958: Scan Tool (MUT-III Sub Assembly)
MB991824: Vehicle Communication Interface (V.C.I.) MB991827: MUT-III USB Cable MB991910: MUT-III Main Harness A (Vehicles with CAN
communication system)
MB991658: Test Harness Set STEP 1. Using scan tool MB991958, diagnose the CAN bus line.

Use scan tool MB991958 to diagnose the CAN bus lines.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the i
gnition switch to "ON"
position.

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

STEP 2. Recheck for diagnostic trouble code.

Recheck if the DTC is set.
1. Erase the DTC.
2. Turn the ignition switch to "ON" position.
3. Check if the DTC is set.
Q: Is the check result satisfactory?

YES:
It can be assumed that this malfunction is intermittent. Refer to
HOW TO USE TROUBLESHOOTING/ INSPECTION SERVICE POINTS
.
NO:
Go to Step 3.
STEP 3. Using scan tool MB991958, check data list item 04: A/C pressure
sensor.

1. Connect scan tool MB991958 to the data link connector.
2. Assemble a manifold gauge onto the high pressure service valve.
3. Turn ON the engine and then turn ON the air conditioner switch.
4. Check the data list.
Item 04: A/C pressure sensor. Check that the refrigerant pressure matches the displayed value on the
scan tool.
5. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor within the specified range?

CAUTION: To prevent damage to scan tool MB991958,
always turn the ignition switch to the
"LOCK" (OFF) position before connecting or
disconnecting scan tool MB991958.

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

1. Assemble a gauge manifold on the high pressure service valve.
2. Disconnect the A/C pressure sensor connector and connect special tool
MB991658 as shown in the illustration.
3. Turn ON the engine and then turn ON the air conditioner switch.
Fig. 45: Checking A/C Pressure Sensor

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