Diagnostic Test
- 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 Diagnosis and Testing . 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.