Compressor Clutch Does Not Engage

HVAC Compressor Clutch Does Not Engage (L61)

Diagnostic Aids

The Delphi variable displacement type A/C compressor carries a thermal link fuse. The purpose of the thermal link fuse is to open and disable the compressor under extreme load and temperatures above 214�C (417�F). The internal thermal link fuse is serviceable.

Test Description

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 116�C (120�F). The engine coolant indicator will illuminate at this temperature.
3. Place the mode switch in any position except OFF, and place the air temperature control in a cold setting. Use the bi-level mode for consistent testing of the A/C system operation.
6. The HVAC control module is inoperative when the module does not respond to any operator control requests to enable the A/C compressor. The blower motor may still operate independent of the A/C controls.