safc installation

[Jebu]

hi

I'm trying to install and safc.

I followed the wiring diagram supplied by the manual

The problem is, when I turn the ignition to the ON position, the SAFC screen does not light up.

And the car won't start.

I think I've done something wrong but I can't figure it out.

Could it be that the SAFC is broken?

anyone has had any experience with this b4?

any advice would help..

thanks

[BHDave]

If the unit isn't getting power then you actually have no connection with your MAF sensor and that would cause the car to not want to start.

It may be worth trying to find an alternate point to get power and check it that way just to see that the unit does work.

[Sumo]

Use a multimeter to stab the power wires. Dont use a test light as the drag to many amps and if I recall one of the SAFC wires goes to the ECU? They are sensitive to voltage spikes.

[Jebu]

thanks guys, we're actually testing it out with our daily car just to learn how to use it.

I think the power cable is the red wire?

there was no voltage with the multimeter... I think I have a broken unit...

[Redbaboon]

Like Jebu said,

1. Unplug the screen unit, and just test the power cable

2. Place the red multimeter lead in the red socket pinout and the black in the black.

3. Turn the ignition key to 'on'

4. If this does not read 12V, then the problem lies with perhaps soldering to the incorrect wire on the ECU (need to get a switched supply ACC)

5. If this does give 12V, but the screen doesn't light up when you plug it in, it is stuffed. Apparently it is not too uncommon for the screens to blow.

Also check all the rest of your wiring - you might have the incorrect signals, and this won't allow the car to start.

Hope I didn't ramble on too much - hope it helps