Compressor Clutch Does Not Engage

TEST DESCRIPTION

Steps 1-6:

Steps 7-16:

Steps 17-30:

Steps 31-43:

The numbers below refer to the step numbers on the diagnostic table.
2. The A/C compressor relay output is disabled if engine coolant temperature is above 125°C (257°F).
3. Activate the A/C system by placing the mode switch in any position except OFF, and by placing the air temperature control switch in a cold setting, When operating the A/C system, use bi-level mode for consistent testing.
5. An inoperative HVAC control module does not respond to operator control requests to enable the A/C compressor. The blower motor may still operate independent of the A/C controls.