Air conditioning switch
Air conditioning switch
I am trying to use the a/c switch to engage certain features, but when I am looking at the sensors tab in SManager there is no response when pressing the a/c button. it always says off. Is there something I need to be aware of when trying this?
Has anyone ever wired the switch manually? I am pretty sure it will require a diode as I got some wierd effects when experementing.
The a/c switch contains a diode and the wire goes through another air conditioning component before it enters the ecu.
I could get the sensor display to show the a/c switch was activated, the RPM's go up which is normal if the a/c is installed. BUT then it turns off by itself.
If anyone knows how to make this work let me know...
Also, how is it possible to use the service connector to activate launch control. doesn't the ecu still see this as being active and mess with the timing?
The a/c switch contains a diode and the wire goes through another air conditioning component before it enters the ecu.
I could get the sensor display to show the a/c switch was activated, the RPM's go up which is normal if the a/c is installed. BUT then it turns off by itself.
If anyone knows how to make this work let me know...
Also, how is it possible to use the service connector to activate launch control. doesn't the ecu still see this as being active and mess with the timing?
On some cars, A/C switch works only if air flow is different to 0 (1, 2, 3 or 4 speed are ok)
Nicolas DARNIS
HRED Motorsport
HRED Motorsport
You cannot use the stock AC switch input, as it will not activate if you do not have AC, as the AC pressure switch will prevent the ECU receiving an signal. If you still have AC, I'd suggest using an input other than ACSW.
You need to add a switch wired from ACSW (pin B5) to ground. The cleanest way is to remove pin 5 from the B connector and replace it with your own wire, but this requires an old connector and experience in removing and replacing pins from the ECU connector. You can also study the electrical wiring diagram in the book and jumper one side of the AC switch to ground. Again, don't do this if AC is functional or the AC compressor is still connected.
You need to add a switch wired from ACSW (pin B5) to ground. The cleanest way is to remove pin 5 from the B connector and replace it with your own wire, but this requires an old connector and experience in removing and replacing pins from the ECU connector. You can also study the electrical wiring diagram in the book and jumper one side of the AC switch to ground. Again, don't do this if AC is functional or the AC compressor is still connected.
Hondata
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