Compressor Clutch Does Not Engage

HVAC COMPRESSOR CLUTCH DOES NOT ENGAGE

TEST DESCRIPTION

Steps 1-8:

Steps 9-21:

Steps 22-36:

Steps 37-39:

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 123°C (253°F). The instrument panel engine coolant gage will indicate overheating.
3. Place the mode switch in any position except OFF, and place the air temperature control switch in a cold setting. Use the bi-level mode for consistent testing of the A/C system operation.
6. The HVAC control assembly is inoperative if the assembly does not respond to any operator control requests.