VX commodore starts sometimes

[HoldenHoon]

Hey everyone I’ve come with some good news for once haha. So I’ve managed to diagnose this starting issue with the VX and I thought I’d just let everyone know incase something similar happens to them. Like I mentioned before I was getting an intermittent signal from the BCM/NSS at the start relay, so I knew that it had to be one or the other, I replaced my NSS (neutral safety switch) and it didn’t fix anything. So I did a bit of research on the BCM’s and the wiring with it and I managed to find out that the BCM provides an earth for the NSS meaning that it will stop the car from cranking over since the earth isn’t passing through to the NSS. So after testing for broken wires it turns out that the BCM is just a faulty unit. Now my issue is that I don’t know what bcm my car should have in it. It’s got power windows, central locking, ss spotlights, cruise control and ABS.

 

[Immortality]

Should be a sticker on the BCM with a code.

 

[HoldenHoon]

Should be a sticker on the BCM with a code.

That’s the thing I was concerned about, the bcm that’s in it now is apparently a VX LS1 EX POLICE BCM. The code is 251 MID. I asked heaps of wreckers and they told me that they’ve never even heard of that number before.

 

[lout]

251 is a VTii bcm nothing special

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[lout]

BCM part numbers

92044097 - VR Mid BCM
92044293 - VR Lux BCM
92045885 - VR Lux BCM
92048786 - VR Low BCM
92048787 - VR Ute BCM
92048788 - VR Low BCM
92048789 - VR Mid BCM
92049146 - VR Mid BCM
92049147 - VS Lux BCM
92049148 - VS Ute BCM
92049150 - VS Low BCM
92049795 - VRII Calais / Caprice Hi BCM
92055379 - VS Hi BCM
92056492 - VS Mid BCM
92056493 - VS Lux BCM
92056494 - VS Ute BCM
92056502 - VS HSV BCM
92078314 - VTII Berlina Lux BCM
92078812 - VTI Calais Hi BCM
92078813 - VTI Exec Mid BCM
92078814 - VTI Berlina Lux BCM
92078815 - VTI Exec Low BCM
92078817 -VTI Berlina Hi BCM
92084602 - VZ Mid BCM
92094013 - VT VX Mid BCM
92094015 - VT Low BCM
92109212 - VXII Exec Mid BCM
92109213 - VXII Exec Low BCM
92140117 - VT ---------- BCM
92145250 - VTII Exec Low BCM
92145250 - VXI Low BCM
92145251 - VTII Exec Mid BCM
92145251 - VXI Mid BCM
92109213 - VXII Low BCM (check this) my car
92109212 - VXII Mid BCM (check this)
92147230 - VX Calais Hi BCM
92147231 - VX Berlina HSV BCM (Mid series????)
92147232 - VTII Calais Hi BCM

014 - VXII LUX

92058-688 LOW (VT-VX Style)
92078-815 LOW (VT-VX Style)
92078-813 MID (VT-VX Style)
92109-212 MID (VT-VX Style)
92084-603 LOW (VY Style)
92084-013 MID (VY Style)
92155-210 MID x5 (VY Style)

92058-688 LOW (VT-VX Style)
92078-313 MID (VT-VX Style) x2
92078-315 LOW (VT-VX Style) x2
92078-815 LOW (VT-VX Style)
92094-013 MID (VT-VX Style) x3
92109-212 MID (VT-VX Style) x3
92084-601 MID (VY Style)
92084-603 LOW (VY Style)
92155-210 MID (VY Style) x7

 

[Immortality]

That info needs a thread of it's own.