Vs v6 ecotec not starting

[lacham05]

Hi all

I have a VS V6 ecotec engine in a hilux with a BCM simulator from Marks 4WD adaptors.

I have remade the harness up with the relays the same as what a VS commodore would have and its has everything else to start up, fuel pressure etc but cant get it to fire.

I'm wondering if it will start even though I'm using a Auto ecu and harness?

and if it will what should I be checking for?

[Holden202T]

I wouldn't think the auto ecm should be an issue, it might throw codes cause the auto box isn't there but that shouldn't stop it running.

if its not running I'd be looking more at making sure you have injectors pulsing and spark, if not then it might be the bcm simulator or something like that .... basically if it gets no response from bcm simulator to say its passed the security check then it will crank but not fire.

[lacham05]

Cool thanks mate, I'll give it another go tonight after work.

The only other thing I could think of was the white 9 pin plug that's next to the PCM plugs, are there any of those pins that need power or earth or looping?

One of those pins the BCM simulator plugs into but other than that I've got nothing else going into it

[vlad01]

Cool thanks mate, I'll give it another go tonight after work.

The only other thing I could think of was the white 9 pin plug that's next to the PCM plugs, are there any of those pins that need power or earth or looping?

One of those pins the BCM simulator plugs into but other than that I've got nothing else going into it

yep, the pink one needs ignition feed.

Can't remember which number though.

Also should have serial line ground in addition to serial data line assuming the simulator is plugged to that.

There are few others but I don't know what your loom is like and the exact details of it.

[lacham05]

Cool! Thanks
So I've now given that pink wire a 12v feed It goes to pin A4 and the bcm simulator has the serial ground on a good ground.

I have power to the injectors but I'm fairly certain they are not pulsing and no spark either.

I have everything plugged in that a standard VS V6 would have apart from the O2 sensors and the purge canister. I also haven't got the "warning check lamps" relay as I don't need that.

The ignition module has power and the cam and crank sensors have power also.

Only other thing I could think of is it something to do with it needing to be told it's in "park" or "neutral"
Any help is m

[TdracerTd]

Does it crank over at all? if not, could be the neutral lockout

[lacham05]

Yea it cranks over but that's only coz I have setup the starter relay separately to avoid having the warning lamps check relay

**also discovered that pins C2 and C3 are not earthed so trying that now and I'll post an up date in the next few minutes

[lacham05]

Tapped an earth to those pins and still no luck

[antus]

Not having a commodore im not sure the details, but even with a bcm sim does the sim need to be paired with the pcm? I reckon hooking up the CEL lamp might help you, also do you have an ALDL cable? seeing what the pcm is complaining about might help you too.

Failing that have you asked marks about it? They should be able yo tell you what their sim needs.

[VL400]

No pairing is required on a vs v6, the PCM sends out a request and the bcm sim should reply saying there is a valid key. The PCM only disables fuel injectors until the valid key message is received, so if the sim is not working will still get spark - a bit of fuel or spray in the intake and it will fire up briefly.