Pinpoint Test AF : U0164:00: Notes
Normal Operation and Fault Conditions
The DDM/ PDM communicates with the FCIM over the CAN. If the DDM/ PDM does not receive messages from the FCIM, features such as the mirror defrost can be inoperative.
DDM/ PDM DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0164:00 | Lost Communication With HVAC Control Module: No Sub-Type Information | Sets when the DDM/ PDM detects data messages are missing from the FCIM. |
Possible Causes
- Network communication concern
- DDM/ PDM
- FCIM