Step | Action | Yes | No |
|---|---|---|---|
1 | Did you perform the HVAC Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check |
2 |
Does the A/C clutch engage and disengage with each command? | Go to Step 3 | Go to Step 6 |
3 |
Does the scan tool display OFF? | Go to Step 11 | 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 9 |
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 11 | Go to Step 10 |
6 |
Does the A/C clutch disengage? | Go to Step 12 | Go to Step 7 |
7 | Disconnect the A/C compressor clutch. Does the A/C clutch disengage? | Go to Step 8 | Go to Step 13 |
8 | Repair the short to voltage in the switched output circuit of the A/C relay. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 17 | -- |
9 | Inspect for poor connections at the harness connector of the heater and A/C control. 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 17 | Go to Step 14 |
10 | 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 17 | Go to Step 15 |
11 | 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 17 | Go to Step 16 |
12 | Replace the A/C relay. Did you complete the replacement? | Go to Step 17 | -- |
13 | Replace the A/C compressor clutch. Refer to Compressor Clutch Coil Removal (V5 - Conventional Mount) . Did you complete the replacement? | Go to Step 17 | -- |
14 | Replace the heater and A/C control. Refer to Control Assembly Replacement . Did you complete the replacement? | Go to Step 17 | -- |
15 | Replace the dash integration module. Refer to Dash Integration Module Replacement in Body Control System. Did you complete the replacement? | Go to Step 17 | -- |
16 | Replace the powertrain control module. Refer to Powertrain Control Module Replacement/Programming in Engine Controls-3.8L. Did you complete the replacement? | Go to Step 17 | -- |
17 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
