17 replies to this topic

[Braus]

The verdict from the local NZ GM dealership (Holden) is that the vehicle will not start as the injectors are not pulsing due to failed injector grounding in the ECU. Could someone please advise the method for disconnecting the 2x harness connectors from the ECU? Thanks guys.

[aquilaproejct]

G'day mate,
There's a locking plate that stops the connectors from being released. The plate is held down with a security bit screw and a shear bolt. The shear bolt needs to be drilled out.
Ecu is the same as the 2.2 Astra's and Zafira.
Holden dealers should be familiar with them.

[aquilaproejct]

On the front there is also two bolts. One of those bolts carries an earth strap

[Exmantaa]

The verdict from the local NZ GM dealership (Holden) is that the vehicle will not start as the injectors are not pulsing due to failed injector grounding in the ECU. Could someone please advise the method for disconnecting the 2x harness connectors from the ECU? Thanks guys.

 

"failed injector grounding" ... Is that another description of the ecu simply not activating the injectors?

Although good to check inside the ecu connectors for corroded pins, it's probably due to the ecu missing a signal or 12v feed for starting. Any error codes?

[Braus]

G'day mate,
There's a locking plate that stops the connectors from being released. The plate is held down with a security bit screw and a shear bolt. The shear bolt needs to be drilled out.
Ecu is the same as the 2.2 Astra's and Zafira.
Holden dealers should be familiar with them.

 

Cheers mate. Finally succeeded removing the ECU by shearing off the 4 bolts from the back of the panel giving easier access to the harness connectors.

[Braus]

 

The verdict from the local NZ GM dealership (Holden) is that the vehicle will not start as the injectors are not pulsing due to failed injector grounding in the ECU. Could someone please advise the method for disconnecting the 2x harness connectors from the ECU? Thanks guys.

 

"failed injector grounding" ... Is that another description of the ecu simply not activating the injectors?

Although good to check inside the ecu connectors for corroded pins, it's probably due to the ecu missing a signal or 12v feed for starting. Any error codes?

 

 

Yes, I believe that could be the case - the ECU not activating the injectors. Holden did not advise any error codes. We tried a variety of scanners and got conflicting results. Holden recommended an after market ECU.

Does anyone have any recommendations for an after market ECU?

Thanks again guys.

[The Batman]

i take it you have tried replacing the brown relay in the boot?

[aquilaproejct]

Can you get the Dtc codes, even conflicting they may help. Sent you a pm as well.

[Braus]

i take it you have tried replacing the brown relay in the boot?

 

Good point. I think we did but will double check.

[Braus]

Can you get the Dtc codes, even conflicting they may help. Sent you a pm as well.

 

Will do. Thanks for the pm bro : )

[Johnturner]

I have an EMU BLACK ECU complete with professionally made engine loom.for the VX 220 turbo advertised in car parts for sale. This would cure the problem with the added bonus of having a stand alone system

[slindborg]

its possible that the ECU pins have corroded... This isnt hugely common but it has happened in the past.

When removing the connector you may see a pool of rust and maybe broken pins

[Exmantaa]

Reading your previous post here, you had an issue with the car (a VXTurbo) not starting and that then showed an immobiliser code?

How was that resolved?

 

Strong advise; buy a cheap Opcom module and start diagnosing your problem...

[Braus]

Reading your previous post here, you had an issue with the car (a VXTurbo) not starting and that then showed an immobiliser code?

How was that resolved?

 

Strong advise; buy a cheap Opcom module and start diagnosing your problem...

 

No resolution unfortunately.  The Holden technician subsequently  ruled out the immobiliser as the light goes out when cranking. 

[Braus]

its possible that the ECU pins have corroded... This isnt hugely common but it has happened in the past.

When removing the connector you may see a pool of rust and maybe broken pins

 

The pins appear to be clean and intact.

[Exmantaa]

Reading your previous post here, you had an issue with the car (a VXTurbo) not starting and that then showed an immobiliser code?
How was that resolved?
 
Strong advise; buy a cheap Opcom module and start diagnosing your problem...

 
No resolution unfortunately.  The Holden technician subsequently  ruled out the immobiliser as the light goes out when cranking.

 
Unusure if the light shows when you have an immobilizer issue.
Read the error codes and you can diagnose a lot more with this OpCom gizmo:
Ebay => https://www.ebay.com...=opcom&_sacat=0

[Braus]

I am delighted to inform the community that the VX is now operational! Sure enough the Op-com did the trick. Contrary to what the local GM dealership said,, it turned out that the immobiliser was not communicating with the ECU.

Many thanks to all the respondents on this subject, particularly to my mate Aquilaproject.

Good effort lads!

Braus : )

[aquilaproejct]

You're welcome. :-)