Compressor Clutch Does Not Engage

TEST DESCRIPTION

Steps 1-4:

Steps 5-13:

Steps 14-24:

Steps 25-39:

Steps 40-42:

The numbers below refer to the step numbers on the diagnostic table.
2. 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.
4. 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.

For a description of the RPO Code(s) shown in this article/images refer to the RPO Code List found at Vehicle/Application ID RPO Codes