2002 Honda Civic No heat

Tiny
TPANDREW
  • MEMBER
  • 2002 HONDA CIVIC
  • 4 CYL
  • FWD
  • MANUAL
  • 112,000 MILES
My Civic won't produce any heat. The blower works, the air conditioner works, but I can't get any hot air at all, even after extensive driving. The temp gauge on the dash seems to be working properly. Any ideas?
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Wednesday, October 22nd, 2008 AT 11:55 AM

1 Reply

Tiny
KHLOW2008
  • EXPERT
Hi tpandrew,

Thank you for the donation.

We shall try going through it see if we can find any Diagnostic Trouble Codes.

GENERAL TROUBLESHOOTING INFORMATION
HOW TO RETRIEVE A DTC
The heater control panel has a self-diagnosis function.
To run the self-diagnosis function, do the following:
1. Turn the fan switch OFF.
2. Press the recirculation control switch and the rear window defogger switch.
3. While holding the both switches down, turn the ignition switch ON (II), then release the both switches. The recirculation indicator and the rear window defogger indicator come on. The recirculation indicator goes off 2 seconds later and the A/C indicator comes on (if so equipped), then the self-diagnosis will begin. About 10 seconds later, the self -diagnosis will finish and the A/C indicator goes off.
i) If any trouble is found, the recirculation indicator blinks the diagnostic trouble code (DTC) to indicate a faulty circuit or component.
ii) If the system is OK, the recirculation indicator stays off.


http://www.2carpros.com/forum/automotive_pictures/192750_HeaterPanel02Civic_1.jpg



Fig. 3: Retrieving DTC Using Control Panel Courtesy of AMERICAN HONDA MOTOR CO., INC.


http://www.2carpros.com/forum/automotive_pictures/192750_HeaterDTC02Civic_1.jpg



Fig. 4: Example of DTC indication Pattern (DTC 7) Courtesy of AMERICAN HONDA MOTOR CO., INC.

Canceling the Self-diagnosis Function
4. Turn the ignition switch OFF to cancel the self-diagnosis function. After completing repair work, run the self-diagnosis function again to make sure that there are no other malfunctions.

Let me know the results of the diagnostic check.

If any codes are found, post them here and we shall see what needs to be done.
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Wednesday, October 22nd, 2008 AT 1:38 PM

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