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Starts then cuts out With hazard lights
#1
Hi my 2008 m59 1.6d berlingo has a strange fault. It was a non runner, when I scanned it, I got P0606 ECU fault, internal fault. I cleared the code and the van starts. 
I then tried all electrical controls everything worked except the horn, (may actually be a faulty horn, I will test it) 
Then I tried the hazard warning lights and immediately the engine cut out, and wouldn’t start up again until I delete the P0606 code.

Has anyone any pointers where to start looking for me to fix it?
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#2
The ECU / BSI control all functions, in that all switches go to the control unit as inputs, and it then in turn operates the output as in lights, indicators etc. Almost nothing is wired direct, so it would seem the input (hazard switch circuit) is possibly shorting to earth etc and pulling the ECU input down, and that is throwing the ECU or BSI into a hard fault. I'd check the wiring from the hazard switch, for chafing and also check if either side of the indicator stalk causes this too, it may just be one input - the hazard switch turns on both sides at the same time but the indicator stalk only does left or right alone obviously. If one side of the indicators does the same thing, then check that side from the indicator stalk and hazard switch through to the ECU especially where cables pass through metal areas like the bulkhead or near hot items like the exhaust manifold.

The horn will probably be a bad earth to the steering column. You can add another earth wire to a screw on the column under the cowling and back to a good earth on the body somewhere.

I posted the M59 wiring diagrams a while ago, have a look for that thread. I don't have one any more (M59) but the thread is out there still.
My Van: 2012 B9 1.6 HDi Enterprise 
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#3
(10-04-2020, 08:08 AM)Chris_wynn Wrote:  Hi my 2008 m59 1.6d berlingo has a strange fault. It was a non runner, when I scanned it, I got P0606 ECU fault, internal fault. I cleared the code and the van starts. 
I then tried all electrical controls everything worked except the horn, (may actually be a faulty horn, I will test it) 
Then I tried the hazard warning lights and immediately the engine cut out, and wouldn’t start up again until I delete the P0606 code.

Has anyone any pointers where to start looking for me to fix it?

I had a 307 in which I had to do an emergency stop to avoid a m/bike overtaking on a corner. The engine cut out and the hazards came on . It started again ok. So I often wondered if there was a "gravity " sensor that detect the sudden deacceleration and cut the engine and switched on the hazards.  There is a switch under the bonnet to switch electric fuel pump off in a collision 
Could yours, if there were is such a sensor fitted be playing up?

  Just a thought ! 

 I googled the p0606 code and it varies from power steering to Maf to auto g/boxes and faulty fuel cap, depending on the car maker
2001 1.9d DW8B  Berlingo
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#4
(10-04-2020, 12:48 PM)brodfather11 Wrote:  
(10-04-2020, 08:08 AM)Chris_wynn Wrote:  Hi my 2008 m59 1.6d berlingo has a strange fault. It was a non runner, when I scanned it, I got P0606 ECU fault, internal fault. I cleared the code and the van starts. 
I then tried all electrical controls everything worked except the horn, (may actually be a faulty horn, I will test it) 
Then I tried the hazard warning lights and immediately the engine cut out, and wouldn’t start up again until I delete the P0606 code.

Has anyone any pointers where to start looking for me to fix it?

I had a 307 in which I had to do an emergency stop to avoid a m/bike overtaking on a corner. The engine cut out and the hazards came on . It started again ok. So I often wondered if there was a "gravity " sensor that detect the sudden deacceleration and cut the engine and switched on the hazards.  There is a switch under the bonnet to switch electric fuel pump off in a collision 
Could yours, if there were is such a sensor fitted be playing up?

  Just a thought ! 

 I googled the p0606 code and it varies from power steering to Maf to auto g/boxes and faulty fuel cap, depending on the car maker

Good point mate, there is a crash sensor in the bumpers or near there on modern cars to deploy the airbag - they need reset after a crash or significant bump (30 mph or greater) - it could be triggered and causing fuel cut....
My Van: 2012 B9 1.6 HDi Enterprise 
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#5
For P0606 ECU fault:

Some good info here:
http://www.bba-reman.com/forums/Topic160670.aspx

Best regards,
brajomobil
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#6
Jeez, that BBA reman forum is a lion's den huh. Better not ask any questions there unless you know what you're talking about and have fireproof underwear on. Lol.
My Van: 2012 B9 1.6 HDi Enterprise 
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