Diagnostic Test
WARNING: This page is about a different car, the 2013 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
- VERIFY DTC IS ACTIVE
- Turn the ignition on.
- With the scan tool, read the active DTCs.
Does the scan tool display; U0164-LOST COMMUNICATION WITH HVAC CONTROL MODULE as Active?
Yes
- Refer to the BODY CONTROL MODULE (BCM) - DIAGNOSTIC CODE INDEX - 1500 article and perform the U0164-LOST COMMUNICATION WITH HVAC CONTROL MODULE.
No
- Refer to DIAGNOSIS AND TESTING and perform the STORED LOST COMMUNICATION DTCs diagnostic procedure.