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Civic VTI with Hondata S300 does not activate AC A/C air conditioning
Posted: Mon Nov 29, 2021 7:22 am
by Gugomez
Hey, need help with AC activation on a VTI Civic. I have checked all the eletrical systems and everything seems to be working properly. Switches, wires, AC compressor, they are all fine but the ECU does not send the voltage output for the AC activation when i press the AC button. Anyone can help? Alibration is attached.
VTI - GPU 1818 - MAPA 6 By E.P. dino.skl
Re: Civic VTI with Hondata S300 does not activate AC A/C air conditioning
Posted: Mon Nov 29, 2021 9:37 am
by Hondata
AC switch is being used to activate on board datalogging. I'd change that and then use 'Test Outputs' to test the AC clutch output.
P72 with Hondata S300 does not activate AC A/C air conditioning
Posted: Sun Jun 26, 2022 8:20 pm
by topsimportgarage
Hello,
I'm having a similar issue. I've verified wiring, relays, & connections. Unable to activate AC clutch through test mode
Re: Civic VTI with Hondata S300 does not activate AC A/C air conditioning
Posted: Mon Jun 27, 2022 10:59 am
by Spunkster
Does the AC system have enough pressure to operate?
Re: Civic VTI with Hondata S300 does not activate AC A/C air conditioning
Posted: Mon Jun 27, 2022 12:16 pm
by topsimportgarage
Yes. There is enough pressure in the system.
Re: Civic VTI with Hondata S300 does not activate AC A/C air conditioning
Posted: Mon Jun 27, 2022 1:06 pm
by Spunkster
I would recommend that you try the ECU on a known working vehicle and see if it operates the AC.
Re: Civic VTI with Hondata S300 does not activate AC A/C air conditioning
Posted: Mon Jun 27, 2022 1:33 pm
by topsimportgarage
I tried it on another car the problem move with the ECU. I also transfer the S300 to another ECU and same thing
Re: Civic VTI with Hondata S300 does not activate AC A/C air conditioning
Posted: Mon Jun 27, 2022 2:47 pm
by Spunkster
The ECU controls the AC, not the s300
Post the calibration as well as a datalog showing the issue.
Re: Civic VTI with Hondata S300 does not activate AC A/C air conditioning
Posted: Tue Jun 28, 2022 2:52 pm
by topsimportgarage
problem resolved. AC Clutch wire was pinned to wrong location on the harness/ECU plus. Thank you for replies