non-multiplex AC switch input
Posted: Mon Feb 19, 2007 6:36 am
Hi, do you guys have a diagram for hooking up this option:?:
The short answer is to connect ACS (from the vehicle harness) to VTP on the ECU.
When VTP (pin B9) is grounded the AC clutch will be switched on by the ECU. Note that you can't just ground B9 with a switch - the normal AC high/low pressure control, temperature control and fan control must be used, otherwise the AC compressor will be damaged. Look in your vehicle manual at the AC wiring section, or get the ETM.