Head Status RX Failure
NOTE:
After making any repairs, perform BODY VERIFICATION TEST
under VERIFICATION TESTS.
Possible Causes:
- Check BCM Codes
- Automatic Temperature Control Head
- Harness/Intermittent Wiring
Testing
- Turn ignition on. With the scan tool, read the BCM DTC's. If the head status RX failure code set, see COMMUNICATIONS for the appropriate symptom. If the code did not set, go to next step.
- With the scan tool, erase the ATC head DTC's. Cycle the ignition switch from OFF to ON position. With the scan tool, read the ATC head DTC's. If the head status failure code sets, replace the automatic temperature control head. See AUTOMATIC A/C-HEATER SYSTEMS - CONCORDE, INTREPID & 300M article in HVAC. If the code does not set, see WIRING DIAGRAMS for possible intermittent wiring problem.