Technical Do I need to get my ECU reprogrammed/repaired?

[WildFeraligatr]

Update: this is all exactly the same with the radio disconnected.

Also attaching the pic of the ECU lead as I forgot to attach it!

 

[koalar]

Clear the code and retest

The keys will not work without the ECU


I am a bit concerned about the voltage at the oil pressure switch

I was confident it was the 5V reference volt I will have to double check

 

[koalar]

What lights come on

Here’s mine keys in turn on, remove keys and repeat.

 

[WildFeraligatr]

Here's a vid - just retesting voltages with fault code cleared now.

 

[WildFeraligatr]

Voltages are the same with 0 faults on the ECU

 

[koalar]

Right Key code is see by the antenna read by the body and passed to the ECU passed back to the body and passed on to the dash to switch the light out

U1600 could be a red herring

Not 100% sure what it means as U codes aren’t standard an immobiliser for one model doesn’t mean it’s the same for every model. .

 

[koalar]

Still concerned about the 11V at the oil pressure switch

The car here just driven off. I was 95% sure it should be 5V, I am 100% sure its 5V on a post 2012

Have to look back. I checked a few years ago and posted. See if I can find the post

 

[WildFeraligatr]

I've just checked the ignition plugs and have no volts there, is that normal given I'm not cranking the engine?

 

[koalar]

I've just checked the ignition plugs and have no volts there, is that normal given I'm not cranking the engine?

One side of each injector should be 12V ignition on not cranking

Same feed goes to coil

 

[WildFeraligatr]

One side of each injector should be 12V ignition on not cranking

Same feed goes to coil

Not the fuel injectors - the plugs next to the coils.

Ignition is on and not cranking and still 0V so may be the issue?

 

[WildFeraligatr]

I say 0v - it's 0 on one side and 0.08 or so on the other

 

[koalar]

Measure

I say 0v - it's 0 on one side and 0.08 or so on the other

this is not correct

 

[WildFeraligatr]

Measure

this is not correct

Ahaha - a problem has been found!

Right - what next?

 

[koalar]

I say 0v - it's 0 on one side and 0.08 or so on the other

Need to look at the circuit diagram

Back shortly

 

[koalar]

Right there is a connector near the battery tray we will have to check for volts here

See if you can find it and what colour wires you have

 

[WildFeraligatr]

There's a few connectors - what am I looking for exactly?

The ignition plugs have a black/yellow wire and a brown/red wire. The black and yellow wire is the one showing about 0.08V and continuity of about 60 ohms

 

[koalar]

A black block

It’s not in your photo that I can see


Try nearer the fuse box

 

[WildFeraligatr]

Oh is that the immobiliser? I seem to remember reading somewhere it's under the fuse box

 

[koalar]

No Immo on these car it’s built into the BSI and ECU

Can’t see it in your photo

It’s here D004

 

[WildFeraligatr]

Not this one is it? Was tucked into the fusebox.