Defrosting Insufficient
| 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 |
| 2 |
|
Go to Step 3 | Go to Step 10 |
| 3 | Measure the engine operating temperature. Does engine reach a normal operating temperature? |
Go to Step 4 | Go to Step 8 |
| 4 |
WARNING:
Refer to Moving Parts and Hot Surfaces Warning . |
Go to Step 11 | Go to Step 5 |
| 5 | Test the operation of the A/C compressor clutch. Does the A/C compressor clutch engage? |
Go to Step 7 | Go to Step 6 |
| 6 | Repair the A/C compressor clutch. Refer to Air Conditioning Compressor Replacement (LEA) . Is the repair complete? |
Go to Step 14 | |
| 7 | Perform the A/C system performance test. Refer to Air Conditioning (A/C) System Performance Test . Is the A/C system operating within the specifications? |
Go to Step 9 | Go to Step 12 |
| 8 | Repair the low engine temperature concern. Refer to Engine Fails To Reach Normal Operating Temperature
. Is the repair complete? |
Go to Step 14 | |
| 9 | Inspect for correct operation of the recirculation door. Is the recirculation door operating correctly? |
Go to Step 14 | Go to Step 13 |
| 10 | Repair the air delivery concern. Is the repair complete? |
Go to Step 14 | |
| 11 | Repair the heating concern. Refer to Air Temperature Malfunction. Is the repair complete? |
Go to Step 14 | |
| 12 | Repair the A/C performance concern. Refer to Air Conditioning (A/C) System Performance Test . Is the repair complete? |
Go to Step 14 | |
| 13 | Repair the recirculation door concern. Is the repair complete? |
Go to Step 14 | |
| 14 | Operate the system in order to verify the repair. Did you find and correct the problem? |
System OK | Go to Step 2 |