2006-2011 CIVIC HVAC CLIMATE CONTROL DIAGNOSTIC TEST QUICK AND EASY W/ CODES

#civic #airconditioning #hvac


Check for trouble codes:
The HVAC control unit has a self-diagnostic function for heating, ventilation, and air conditioning system. To run the self-diagnostic function, do the following:

1. Turn the ignittion switch OFF.

2. Press and hold the recirculation control and rear window defogger buttons, and turn the ignition switch ON (II).

3. Recirculation indicator turns on for 2 seconds, then self-diagnostic function begins.

NOTE:
•The blower motor will run at any speed during the self-test regardless of the dial positioning.
•In the case of multiple problems, the recirculation indicator will blink the lowest number DTC only.
•If no DTCs are found, the indicator will not blink.

DTC (Recirculation Indicator Blinks) Detection Item
1 An open in the air mix control motor circuit
2 A short in the air mix control motor circuit
3 A problem in the air mix control linkage, door, or motor
4 An open or short in the mode control motor circuit
5 A problem in the mode control linkage, doors, or motor
6 A problem in the blower motor circuit (New Blower Motor https://amzn.to/3Liuxq3)
7 HVAC control unit internal error
8 An open in the evaporator temperature sensor circuit
9 A short in the evaporator temperature sensor circuit

Beyond this you need to hang the AC gauges and thermometers on the system and do more checks. A/C Gauges to check your amount of freon https://amzn.to/3zEGGmq

-Arthur Adams Thanks for the tip!
4 blinks mean that your ac compressor relay has faulted out. All you need is a NEW relay to replace the old one located in the fuse box. Easy fix. If your AC just stopped randomly working one day it's most likely that.



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