Pinpoint Test 5

PINPOINT TEST 5: INSUFFICIENT AIR CONDITIONING (A/C) COOLING

Step 1 - 2:

Step 3 - 4:

Step 5 - 8:

Step 9 - 11:

Step 12 - 14:

Step 15:

Normal Operation
Under normal operation, the A/C system provides adequate cooling based on the position of the function selector switch.

Possible Causes
- A/C compressor
- A/C evaporator core orifice
- A/C lines
- evaporator core
- condenser
- refrigerant undercharged
- refrigerant overcharged
- excessive moisture or oil in the refrigerant

NOTE: Verify the cooling fans are operating correctly. If the cooling fans are inoperative, high system pressures and insufficient cooling will result.