Performance Test: Notes

The vehicles to be tested should be parked out of direct sunlight.

1. Close the high and low-pressure valve of the gauge manifold.
2. Connect the charging hose (blue) to the low-pressure valve and connect the charging hose (red) to the high-pressure valve of the gauge manifold.
3. Install the quick joint (for low-pressure) to the charging hose (blue), and connect the quick joint (for high-pressure) to the charging hose (red).
   CAUTION:

   • To connect the quick joint, press section A firmly against the service valve until a click is heard.
   • When connecting, run your hand along the hose while pressing to ensure that there are no bends in the hose.
4. Connect the quick joint (for low-pressure) to the low-pressure service valve and connect the quick joint (for high-pressure) to the high-pressure service valve.
   Fig 1: Identifying Low And High Pressure Valve Connection

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   NOTE: The high-pressure service valve is on the A/C pipe and the low-pressure service valve is on the suction hose.
5. Start the engine.
6. Set the A/C controls as follows:
   • A/C switch: A/C - ON position
   • Mode selection: FACE position
   • Temperature control: MAXIMUM COOLING position
   • Air selection: RECIRCULATION position
   • Blower switch: Maximum air volume
7. Set the engine speed to the idle speed.
8. Engine should be warmed up with hood, doors and windows opened.
9. Insert a thermometer in the center air outlet and operate the engine for 20 minutes.
   NOTE: If the A/C clutch cycles, take the reading before the clutch disengages.
10. Note the discharge air temperature.
    Fig 2: Checking Air Temperature With Thermometer

    Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.