I see there are some guru's on here, maybe someone has some information I need.
I have a VX Commodore engine in a toyota 4x4. This has a factory ECU, and a BCM Simulator on it.
The BCM Simulator has an input for A/C which I have connected to the car's A/C Circuit. It communicates with the ECU over ALDL. When the button is pressed, the BCM simulator activates the low-speed fan, but the A/C compressor doesn't engage.
What is needed for the commodore ECU to engage the compressor? The system has been gassed up today, it has factory VX Pressure transducer connected to the factory loom. What else does it need?
Cheers
Dave