U0164 - Lost Communication With HVAC Control Module: Notes
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAM.
- >>When Monitored:<< With the ignition ON. Battery voltage between 10 and 16 volts. Ignition off draw fuse installed. Totally integrated power module is configured correctly.
- >>Set Condition:<< Bus messages not received from the HVAC control module for approximately 2 to 5 seconds.
| Possible Causes |
|---|
| CAN INTERIOR BUS 125K (+) CIRCUIT D265 SHORT TO VOLTAGE |
| CAN INTERIOR BUS 125K (-) CIRCUIT D264 SHORT TO GROUND |
| DTCs RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES |
| TIPM NOT CONFIGURED CORRECTLY |
| HVAC POWER AND GROUND |
| HVAC CONTROL MODULE |
| MODULE THAT SET THE DTC |