Civic VTI with Hondata S300 does not activate AC A/C air conditioning

[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

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[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.

[topsimportgarage]

Hello,
I'm having a similar issue. I've verified wiring, relays, & connections. Unable to activate AC clutch through test mode

[Spunkster]

Does the AC system have enough pressure to operate?

[topsimportgarage]

Yes. There is enough pressure in the system.

[Spunkster]

I would recommend that you try the ECU on a known working vehicle and see if it operates the AC.

[topsimportgarage]

I tried it on another car the problem move with the ECU. I also transfer the S300 to another ECU and same thing

[Spunkster]

The ECU controls the AC, not the s300

Post the calibration as well as a datalog showing the issue.

[topsimportgarage]

problem resolved. AC Clutch wire was pinned to wrong location on the harness/ECU plus. Thank you for replies