Deedilus

iTrader: (4)

I need some serious help on this one. Some of you might have seen my epic fail when I got scammed out of my old VQ35 and a VH45 about 8-9 months ago. Well, I saved and got a new VQ and a friend and I put it in ourselves with some guidance from the owner of the shop that is letting us work on it in house... But we've gotten everything and were trying to get the key reprogrammed today to officially finish and get it running but the locksmith let us know that the OBD was having issues contacting the ECM... Yikes...

So this is the issue:

• BCM is getting a trickle of power, ECM is not getting ANY power (Even though the ECM power wire has power up at the Intelligent Power Distribution module...)
• Gauges/AC are getting power and are working, but everything controlled by the BCM (ie., dome light, horn, wipers, indicators, etc.) are NOT working and my headlights turn on immediately when the key is turned to accessory (it's a base, it doesn't have daytimes). Brake lights are also constantly on.
• Hazards go on for a split second then cuts off.

We've checked:

• All of the fuses and the relay, they're all good.
• Took out the ECU and checked all of the plugs on the harness, it's getting NO power what-so-ever, but up at the IPDM it's got power...
• Took the BCM out and checked all of it's plugs, it's not really getting anything either. However we hooked up UpRev Cypher and it only connected to the BCM but we could only control the security light and nothing else.
• Tried running a ground straight to the ECU, didn't do anything.
• Some other things but my brain is fried and I can't remember at the moment....

At first we were thinking (and it's still in the back of our minds somewhat..), is that it's something to do with the motor and harness I bought. My car is an 05 built in 06/05, but the motor we were able to find was an 04. The engine harness (not the engine compartment harness, the engine harness) is from an 04, ECM is from an 05.... But after scouring through the FSM for 04 and 05 that's not an issue... but the IPDM layout is completely different between years, so that is what is bugging us and making us scratch our heads.

Now, we're thinking that the crackhead in Austin that was doing my V8 swap that ruined my car did something behind the dash or fried something.. But when we look back there we don't really see anything wrong with the wiring. We're wondering if maybe the BCM is bad? But that wouldn't really interfere with the ECM getting power I... It's a straight wire directly to it from the IPDM, which has power.

We're thinking about running a wire directly from the battery to the ECM and seeing what that does, but I'm open to all suggestions. Appreciate any help you guys may have!!!

Deedilus

iTrader: (4)

Bump, anybody? Could it be the BCM is just bad?

abushong504

iTrader: (87)

I wish I could help you out.

However, if you need a new BCM, let me know. I have an extra.

Deedilus

iTrader: (4)

PM'd.. Does anyone know whether the BCM is compatible across years? Please if you know I need an answer so I can buy another one ASAP and get this damn thing running..