Hi..battery voltage far too low....I suspect if you check the voltage while cranking it probably drops a lot lower......either..charge existing battery or replace with a new one not forgeting the 3 minuit disconect rule...here

 

I have removed battery from other 307 which is off road at the moment and has a recent battery. That's on charge as well as it's been sitting in a car unused for a while and is also low. I have no idea of the history of the battery in the problematic car before its purchase last year - however, I guess a replacement will be in order.

 

sounds that way.....have a look at tanya batteries....have had great service for many years

 

Unfortunately, I live in the Hungarian countryside, and the choice is based by what the local factor will have - usually cheap ones (if I want one quickly).

 

Highest CCA, that fits.

You mention using Diagbox, but you might need to be using Peugeot Planet in that or Diagbox to access everything.

PEUGEOT 307 2.0 16V 180 EW10J4S (RFK) 2005 - 2008 and Diagbox itself was after 2010 but may work with earlier models.

 

There's a 60 AH battery fitted - but I see the biggest one I can order online is 63?

This 307 is a facelift with CAN, and it doesn't like PP - so I used that on the pre-facelift, and diagbox on the facelift. It worked fine last week when I was problem-solving the issue with the coil pack.

 

Right, I have partly charged a battery, up to around 12.6 volts - reconnected it and turned on the ignition.

Car is now in economy mode and still won't crank, ECU still won't communicate with Diagbox and still doesn't recognise the autobox ECU.

Is it normal that the car won't even crank (nothing happens when I turn the ignition key to start position)? Last week when the coil pack failed it went into economy mode and was able to crank?

 

Might help to give the VIN / RPO

Engine starting (may look like this)

So check fuse PSF1 F8

Diagnostic socket (at the moment, does not say how 1320 is linked... typical)

PEUGEOT ALL MODELS WIRING DIAGRAMS - GENERAL

 

Might help to give the VIN / RPO
View attachment 124005

Engine starting (may look like this)
View attachment 124006
View attachment 124007

So check fuse PSF1 F8
View attachment 124008

Diagnostic socket (at the moment, does not say how 1320 is linked... typical)
View attachment 124009

PEUGEOT ALL MODELS WIRING DIAGRAMS - GENERAL

VF33HRFJF84448315

I'll have a look at the fuses later, working at the moment. Thanks for your help

I had a quick look under the bonnet. The PSF1 looks similar but not the same as the one in the diagram you shared.

 

Here's the diagbox screenshot from this morning. I checked fuse 8 in the PSF1 - seems to be fine, but when I turn the key to turn the engine over I hear absolutely nothing, no clicking of relays or anything.

I did recently pull the connectors off the ECU to check the wiring continuity for the coil pack that failed, and the alternator wire as that had been flagged up as a fault - all of which checked out.

 

Having looked on Sedre, the things not working are all located around MC10. Hopefully, it's just a very crusty earth point... shall find out later

 

PEUGEOT 307 2.0 16V EW10A (RFJ) 2005 - 2010

Link to OEM part numbers and exploded views VF33HRFJF84448315 PEUGEOT Parts Catalogs | PartSouq

If the vehicle date is correct, the RPO is 12400 (24.10.2005)

General location of Earths

 

PEUGEOT 307 2.0 16V EW10A (RFJ) 2005 - 2010

Link to OEM part numbers and exploded views VF33HRFJF84448315 PEUGEOT Parts Catalogs | PartSouq
View attachment 124047

If the vehicle date is correct, the RPO is 12400 (24.10.2005)

General location of Earths
View attachment 124048
View attachment 124049

Yes, that's the car. Thanks for the earth points. I am a bit disappointed I need to remove the bumper and headlight or plastic box to get at the earth point - can see the wires but not easy hand access.

I have printed a diagram from Sedre of the Ignition circuit - can't see the double relay for the ECU that powers the latter (It 1304 according to PSA wiring codes and although I found it on the car, I cannot see it on the diagram - Omron 240107 is the part).

Having spent a long time having Engine ECU problems on my 206 project, I am very familiar with the ignition circuit and powering the ECU from this relay. I am surprised I cannot see it on the ignition diagram from Sedre.

Can you help?

 

PEUGEOT 307 2.0 16V EW10A (RFJ) 2005 - 2010

Engine Starting

PSF1

BSI

Electronic Injection

Assumption 8.1 Bosch

Auto GearBox

Hope you find this useful.

 

Thanks, it's very useful - but still doesn't seem to include this...

 

Interconnects

Mutiplex (not all of them)
IS CAN

Body CAN

Starter motor

PSF1 (detailed view)

BSI (detailed view)

Ignition Switch

 

Give me a picture of engine fuse box, you mentioned it not the same, go trolling through and see I can match it up to something.

Maybe this

 

Give me a picture of engine fuse box, you mentioned it not the same, go trolling through and see I can match it up to something.

Maybe this
View attachment 124070

This is the one fitted.

 

Which is giving this for the starter motor

 

There is no other configuration I can find of PSF1 with this engine. The above one is before full CAN / BM34. Then two 307 after the base unit but both of these use the same config I have given of PSF1.

Tried dropping ABS and heap of things, to see if PSF1 ever changed and cannot match what you have. It is pretty clear what I provided is not a match but there is nothing else in the documents to cover it, that I can find.

 

Thanks for all the info. It'll come in very useful tomorrow. I still think the likely issue is earth related, or the PSF1 itself. Will find out...

 

So... spent some of the day on the car. Had to get a couple of neighbours to push the car out of the drive and into the garage. Put the front of car on stands, removed front bumper and headlight to get to MC10 earth. It was covered in seam sealer, I don't know if that's usual. Anyway, the earth point and four ring terminals had some corrosion on them so cleaned them up, covered them in Vaseline and reconnected... and no difference.

However, this evening I have come across this video on YouTube that has the same characteristics as my car - no power to ECU and no crank. So, I assume that the no crank is due to the PSF no letting the engine crank if the ECU is not powered. So, this is the route that I'll be taking in the morning.

LM Auto Repairs - Peugeot Expert 1.6 HDI no crank no start, no ecu communication... Fault finding and repair.

 

Update - The PSF1 has a failed relay that isn't turning the ECU on. Awaiting a replacement which will hopefully resolve the situation.

 

Well, since the last update, it turned out the issue wasn't the PSF1. After sourcing a replacement, it made no difference to the problems being experienced.

Finally, the issue was down to a dead Engine ECU. I have managed to source one and found someone local to virginise. As we don't possess the security code card, I also invested in an Xtool D7W which is capable of retrieving the Security Pin from the BSI without any intervention. Worked successfully and I managed to match the ECU to the BSI yesterday and start the car - first time it's run for 5 weeks.

However, I now need to do the manual configuration of the ECU for the car and apart from the car having an AL4 automatic gearbox, I am not sure of all the parameters I need to select. Maybe time for another thread.

Cheers

A