HVAC Compressor Clutch Does Not Disengage. Oldsmobile Aurora 2003

For 1990-2009 cars only

Makes 🢒 Oldsmobile 🢒 2003 🢒 Aurora 🢒 HVAC 🢒 HVAC Systems - Automatic 🢒 HVAC Compressor Clutch Does Not Disengage

Step	Action	Yes	No
Schematic Reference: HVAC Schematics Connector End View Reference: HVAC Connector End Views DEFINITION: The A/C compressor clutch will not disengage when an A/C request has not been made and a powertrain DTC has not been set.
1	Did you perform the HVAC Diagnostic System Check?	Go to Step 2	Go to Diagnostic System Check - HVAC Systems - Automatic
2	Install a scan tool. Turn ON the ignition, with the engine OFF. With a scan tool, command the A/C Relay ON and OFF. Does the A/C compressor clutch engage and disengage with each command?	Go to Step 3	Go to Step 7
3	Start the engine. Place the A/C request switch in the OFF position. With a scan tool, observe the A/C Relay Command parameter in the PCM Engine Data list. Does the scan tool display OFF?	Go to Step 12	Go to Step 4
4	With a scan tool, observe the Control Head (desired) parameter in the DIM A/C Information list. Does the scan tool display A/C OFF?	Go to Step 5	Go to Step 6
5	With a scan tool, observe the A/C Clutch (desired) parameter in the DIM A/C Information list. Does the scan tool display OFF?	Go to Step 12	Go to Step 11
6	With a scan tool, observe the A/C Requested parameter in the IPM HVAC System Data list. Does the scan tool display NO?	Go to Step 11	Go to Step 10
7	Turn OFF the ignition. Disconnect the A/C compressor clutch relay. Turn ON the ignition, with the engine OFF. Does the A/C compressor clutch disengage?	Go to Step 13	Go to Step 8
8	Disconnect the A/C compressor. Does the A/C compressor clutch disengage?	Go to Step 9	Go to Step 14
9	Repair the short to voltage in the A/C compressor clutch supply voltage circuit of the A/C compressor clutch relay. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair?	Go to Step 18	--
10	Inspect for poor connections at the harness connector of the instrument panel module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 18	Go to Step 15
11	Inspect for poor connections at the harness connector of the dash integration module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 18	Go to Step 16
12	Inspect for poor connections at the harness connector of the powertrain control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 18	Go to Step 17
13	Replace the A/C compressor clutch relay. Did you complete the replacement?	Go to Step 18	--
14	Replace the A/C compressor. Refer to Air Conditioning Compressor Replacement in Heating, Ventilation and Air Conditioning. Did you complete the replacement?	Go to Step 18	--
15	Replace the instrument panel module. Refer to Instrument Panel Module Replacement in Body Control System. Did you complete the replacement?	Go to Step 18	--
16	Replace the dash integration module. Refer to Dash Integration Module Replacement in Body Control System. Did you complete the replacement?	Go to Step 18	--
17	Replace the PCM. Refer to Powertrain Control Module Replacement in Engine Controls-4.0L. Did you complete the replacement?	Go to Step 18	--
18	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 2