Defrosting Insufficient
WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
| Step | Action | Yes | No |
|---|---|---|---|
| DEFINITION: Time required to defrost the windshield is longer than normal. | |||
| 1 | Were you sent here from Symptoms or another diagnostic table? | Go to Step 2 | Go to Symptoms - HVAC Systems - Automatic , or Symptoms - HVAC Systems - Manual |
| 2 |
|
Go to Step 3 | Go to Step 9 |
| 3 | Measure the engine operating temperature. Does engine reach a normal operating temperature? |
Go to Step 4 | Go to Step 7 |
| 4 |
|
Go to Step 10 | Go to Step 5 |
| 5 | Test the operation of the A/C compressor clutch. Does the A/C compressor clutch engage? |
Go to Step 8 | Go to Step 6 |
| 6 | Repair the A/C compressor clutch concern. Refer to DTC P0645, P0646, or P0647
. Is the repair complete? |
Go to Step 12 | - |
| 7 | Repair the low engine temperature concern. Refer to Engine Fails To Reach Normal Operating Temperature
. Is the repair complete? |
Go to Step 12 | - |
| 8 | Inspect for correct operation of the air inlet door. Is the air inlet door operating correctly? |
Go to Step 12 | Go to Step 11 |
| 9 | Repair the air delivery concern. Refer to Diagnostic Starting Point - Vehicle
. Is the repair complete? |
Go to Step 12 | - |
| 10 | Repair the heating concern. Refer to Heating Performance Diagnostic . Is the repair complete? |
Go to Step 12 | - |
| 11 | Repair the air inlet door concern. Refer to Diagnostic Starting Point - Vehicle
. Is the repair complete? |
Go to Step 12 | - |
| 12 | Operate the system in order to verify the repair. Did you find and correct the problem? |
System OK | Go to Step 2 |