Compressor Clutch Does Not Engage

TEST DESCRIPTION

Steps 1-6:

Steps 7-17:

Steps 18-30:

Steps 31-39:

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 121°C (250°F).
3. Placing the mode switch in any position other than OFF, along with placing the air temperature control switch in a cold setting, activates A/C operation. For the purpose of this and future steps where A/C operation is necessary, bi-level mode is used for consistent testing.
5. The HVAC control assembly is inoperative when the module does not respond to any operator control requests.