Step
| Action
| Yes
| No
|
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, perform Recalibrate all Motors in instrument
panel module Special Function/Miscellaneous Tests.
- Select display DTC function in instrument panel module.
Does the scan tool display any DTCs?
| Go to
Diagnostic Trouble Code (DTC) List
| Go to
Step 3
|
3
| Inspect for a poor battery condition. Refer to
Battery Inspection/Test
in Engine Electrical.
Did you find and correct the condition?
| Go to
Step 6
| Go to
Step 4
|
4
| Visually inspect the following:
| • | Stuck or intermittent sticking switch on the control head (Trim
plate fit). |
| • | Stuck or intermittent sticking switch on the steering wheel controls. |
Did you find and correct the condition?
| Go to
Step 6
| Go to
Step 5
|
5
|
- Start the engine.
- Verify all the instrument panel outlets are open.
- Operate the system. Refer to the appropriate procedure:
Does the system operate properly?
| System OK
| Go to
Symptoms - HVAC Systems - Automatic
|
6
| Operate the system in order to verify the repair.
Did you correct the condition?
| System OK
| Go to
Step 2
|
