Step
| Action
| Yes
| No
|
1
| Did you perform the HVAC Diagnostic
System Check?
| Go to
Step 2
| Go to
Diagnostic System Check
|
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
DTC Table
| Go to
Step 3
|
3
| Was the customer complaint in heating mode operation?
| Go to
Heating Insufficient
| Go to
Step 4
|
4
| Does the customer need to change the set temperature frequently
to maintain comfort?
| Go to
Set Temperature Requires Frequent Adjustment
| Go to
Step 5
|
5
|
| • | Inspect the instrument panel ducts for proper installation/alignment
or obstructions. |
| • | Inspect the front of dash for air leaking around the HVAC module
seals or other areas where air could enter the passenger compartment. |
Did you find and correct the condition?
| Go to
Step 8
| Go to
Step 6
|
6
|
- Start the engine.
- Verify all the instrument panel outlets are open.
- Operate the system. Refer to the appropriate procedure:
Does the system operate properly?
| Go to
Step 7
| Go to
Symptoms
|
7
|
- Install a scan tool.
- Turn ON the ignition, with the engine OFF.
- With a scan tool, adjust the Temperature Offset in instrument
panel module Special Function/Set Options as needed.
Did you complete the repair?
| Go to
Step 8
| --
|
8
| Operate the system in order to verify the repair.
Did you correct the condition?
| System OK
| Go to
Step 2
|
