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 - A/C SYSTEM TEST - MTC
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 | Turn the ignition on. With the DRBIII®, attempt to communicate with the Powertrain Control Module. With the DRBIII®, attempt to communicate with the Body Control Module. Was the DRBIII® able to communicate with the PCM and the BCM? Yes --> Go To 2 No --> Refer to the COMMUNICATION CATEGORY for the related symptom. 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. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 3 |
All |
| 3 | Turn the ignition on. Turn the Rear Defogger off. Turn the Blend Control switch to the full cold position. Turn the Mode Control switch to the Panel - Heater position. Turn the Blower switch off. With the DRBIII®, record and erase Powertrain Computer DTC's. With the DRBIII®, record and erase Body Computer DTCs. Start the engine.
NOTE:
Proceed directly to the conclusion of this test and answer Yes to the question if the DRBIII® displays any HVAC related DTC(s) while performing anyone of the following steps. Monitor the DRBIII® for HVAC related DTCs in the Body Computer while performing the following. Turn the Blower switch on. With the DRBIII® in Miscellaneous, actuate Calibrate HVAC Door Motors. Slowly turn the Blend Control switch from full cold to full hot, then back to full cold. Turn the Mode Control switch to each position, waiting 20 seconds in each position. Press and release the Rear Defogger button, wait 20 seconds, then press and release it again to turn the Rear Defogger off. Does the DRBIII® display any HVAC related Body Computer DTCs? Yes --> Perform appropriate test(s). If multiple codes appear, repair any that relate to a short circuit first. 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. 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 |