How to Display and Read Diagnostic Trouble Codes
How to Retrieve a DTCThe heater control panel has a self-diagnosis function.
DTC Indication Pattern:
Running the Self-diagnosis Function
Turn the ignition switch ON (II), the fan switch OFF, and the recirculation control switch to Recirculate (recirculation indicator light comes on). Press and hold the recirculation control switch to Fresh (recirculation indicator light goes off). Continue to hold the switch until the recirculation indicator light comes on for two seconds, then it will blink the Diagnostic Trouble Code (DTC) to indicate a faulty component.