A/C problem

beat · Post by **beat** » Fri Apr 24, 2009 12:33 am

Hi,
My A/C his not working..... Would it be something I set that disabled the A/C?

Checked that the A/C pump works when we feed it power, but the ECU doesnt feed it power...

Post by **Spunkster** » Fri Apr 24, 2009 9:19 am

You could have a damaged ECU, but without the calibrations and datalogging showing the problem, it is impossible to speculate.

beat · Post by **beat** » Fri Apr 24, 2009 1:27 pm

How can I check for damage of the ECU?
Here is the calibration the car is running.

Post by **Hondata** » Mon Apr 27, 2009 7:43 am

The best way is to try this ECU in a vehicle with working AC using a fresh calibration.

tune4food · Post by **tune4food** » Mon May 11, 2009 11:30 pm

There is a setting that disables A/C at a certain rpm. Set the rpm high to where u can use the AC...
I think it's setup that way so that if and when you decide to floor it, it turns off AC function so you have less parasitic drag from the engine.

beat · Post by **beat** » Wed May 20, 2009 10:09 pm

Hondata wrote:The best way is to try this ECU in a vehicle with working AC using a fresh calibration.

Will try that... Thank you

Just tested it today. There is signal going into the ECU, but nothing coming out of the ECU.... Is there a part of the calibration other than the A/C cut function that affects the A/C system?

Post by **Hondata** » Thu May 21, 2009 7:13 am

To elinimate the calibration, create a new calibration, change only the injector size and MAP sensor (if necessary), and see if the AC works. Otherwise it looks like the ECU AC output circuit has died.

beat · Post by **beat** » Thu May 21, 2009 11:44 am

Found the problem, I activated datalog through the AC switch, therefore the AC switch was no longer an AC switch....
Stupid...

Post by **Hondata** » Thu May 21, 2009 12:35 pm

Glad that it is worked out. Thanks for the resolution.