Diagnostic Procedure
WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE - ATC SYSTEM TEST
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 | Turn the ignition on. With the DRBIII®, attempt to communicate with the Powertrain Control Module (PCM). With the DRBIII®, attempt to communicate with the Body Control Module (BCM). With the DRBIII®, attempt to communicate with the Automatic Temperature Control (ATC). Was the DRBIII® able to communicate with the PCM, BCM & ATC? Yes --> Go To 2 No --> Refer to the COMMUNICATION CATEGORY for the related symptom(s). Perform BODY VERIFICATION TEST - VER 1 . |
All |
| 2 | With the DRBIII®, read Powertrain Computer DTC's. With the DRBIII®, read Body Computer DTC's. Are any HVAC related DTCs present? Yes --> Refer to the appropriate category for the related symptom(s). Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 3 |
All |
| 3 | Turn the ignition on. With the DRBIII®, record and erase the Body Computer DTC's. Start the engine.
NOTE:
Monitor the DRBIII® for active Body Computer DTCs while performing the following test steps. If a DTC appears during any test step, proceed to the conclusion question.
NOTE:
If multiple DTCs appear, repair any that relate to a short circuit first. Slowly turn the blower control to each blower speed and leave it on HI speed. Set the temperature to Lo. Wait 30 seconds before proceeding to the next step. Set the temperature to Hi. Wait 30 seconds before proceeding to the next step. Set the temperature to Lo. Wait 30 seconds before proceeding to the next step. Push and then release each mode button (Auto; Off; A/C; Recirc; Panel; Floor; Mix; Bilevel; EBL; & Defrost), waiting 30 seconds before pressing each button. With the DRBIII® in Miscellaneous, actuate Calibrate HVAC Door Motors. When calibration is complete, read the Body Computer DTCs. Slowly return the blower control to LO speed. Does the DRBIII® display any DTCs? Yes --> Perform appropriate test(s). Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 4 |
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| 4 | With the DRBIII®, read PCM DTC's. Are any HVAC related DTCs present? Yes --> Refer to the appropriate category for the related symptom(s). Perform BODY VERIFICATION TEST - VER 1 . No --> Recheck the climate control system performance. Refer to Service Information for additional information. Perform BODY VERIFICATION TEST - VER 1 . |
All |