2004 MITSUBISHI ENDEAVOR air conditioning

Fig. 167: Checking Air Conditioning Compressor Clutch Operation

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

STEP 20. Check the air thermo sensor.

Measure the resistance between connector terminals 1 and 2 under at least two
different temperatures. The resistance values should generally match those in
the graph.
Q: Is the air thermo sensor in good condition?

YES:
Go to Step 21.
NO:
Replace the air thermo sensor. Check that the air conditioning works
normally.
NOTE: The temperature at the check should not exceed the
range in the graph.

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

Fig. 168: Connector Terminal Resistance (1 Of 2)

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

STEP 21. Check the ambient air temperature sensor.

Measure the resistance between the sensor terminals under at least two
temperatures. The resistance values should meet the values shown.
Q: Is the ambient air temperature sensor in good condition?

YES:
Go to Step 22.
NO:
Replace the ambient air temperature sensor. Check that the air
conditioning works normally.
NOTE: The temperature should be within the shown range.

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

Fig. 169: Connector Terminal Resistance (2 Of 2)

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

STEP 22. Check the A/C pressure sensor operation.

1. Assemble a gauge manifold on the high pressure service valve.
2. Disconnect the A/C pressure sensor connector and connect special tool test
harness MB991658 as shown in the illustration.

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

Fig. 170: Identifying A/C Pressure Sensor Connector

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

3. Turn ON the engine and then turn ON the air conditioner switch.
4. At this time, check to see that the voltage of A/C pressure sensor terminal
No.2 reflects the specifications of the figure.

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

Fig. 171: Checking Voltage Of A/C Pressure Sensor

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Q: Is the A/C pressure sensor operating properly?

YES:
Go to Step 23.
NO:
Replace the A/C pressure sensor. Check that the air conditioning
works normally.
NOTE: The allowance shall be defined as +/-5%

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

Fig. 172: Refrigerant Pressure Graph

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

STEP 23. Check the refrigerant level.

Use the refrigerant recovery station to remove all of the refrigerant, and then
calculate the amount of the refrigerant and charge it.
Q: Is the refrigerant level correct?

YES:
Go to Step 24.
NO:
Correct the refrigerant level (Refer to
REFRIGERANT LEAK
REPAIR PROCEDURE
). Check that the air conditioning works
normally.
STEP 24. Replace the A/C-ECU.

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

Q: Does the A/C operate normally?

YES:
No action is necessary and testing is complete.
NO:
Replace the powertrain control module. Check that the air
conditioning works normally.
INSPECTION PROCEDURE 5: FRONT BLOWER FAN AND MOTOR DO NOT TURN
2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

Fig. 173: View Of Blower Motor Circuit Diagram

Courtes
y of MITSUBISHI MOTOR SALES OF AMERICA
.

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