406 HDI No Start Cranks and initially fires but dies straight away - Peugeot Forums
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Old 20-07-16, 11:29 AM   #1
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Default 406 HDI No Start Cranks and initially fires but dies straight away

Hi, Forum is new to me so I've tried to include as much info as I can.
Cannot get my 406 Hdi to fire up and has been out of action for 2 weeks now.
Hlp please. I PM'd Styx ? based in woking for a PP diagnostic and he got back in touch by PM. Have replied by PM, but not sure if he's seeing my replys. Possibly my mistake with the messaging.

406 Hdi (90) 2001 Mileage 184000
No Start. Cranks and initially fires but dies straight away.

Codes: P0560 (system Voltage malfunction) P0220 / P0120 / P0190
Car started rough (after a nights rain) , messages flashed up (immobiliser / antipollution fault/ ABS) turned off, still ran even without key. Disconnected battery to stop (I know!) Have checked every fuse, cleaned all connectors, pulled out cam sensor and cleaned off grease on end of it, Pulled crank sensor, not too dirty. pulled up drivers carpet/ checked all connectors (No water there) . Blue connector had one pin badly corroded. Cleaned and used switch cleaner reconnected.. same fault /no start..Not sure how I check compression but engine cranks strongly. Changed fuel filter (not dirty, no swarf in bottom). Fuel Pump primes and car starts initially and cuts out. BSI reset...door open with lights on beeps ok. Checked ECU and Relay for corrosion etc.. Both look good/ Cleaned up any earths, most looked ok, One under battery was a bit rusty. Cleaned.... it's like the car wants to start but the codes wont let it ? I can't clear with my cheap reader. I changed timing belt and tensioners year and a half ago. Had anti pollution fault long time ago but after changing fuel filter and filling bowl with injector cleaner never saw this again. really stuck here...Had car 6 years and always has run well.
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Old 20-07-16, 05:09 PM   #2
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Key in ignition turn on turn off leave in ignition open door does it beep ?

codes wont stop it starting but the faults relating to the codes might
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Old 20-07-16, 06:39 PM   #3
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Hi, Yes the door beeps following your process
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Old 20-07-16, 08:17 PM   #4
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Ok immobiliser still ok after battery disconnect your lucky !

It actually does not need much to start but you really need planet to see what the ecu is seeing as it makes getting to bottom of problem much easier

What you need to check is cam and crank sync yes
engine cranking speed 250rpm min
fuel pressure while cranking 300bar

if these 3 are ok it should fire assuming ecu is unlocking but it should be if key is being read ok.
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Old 21-07-16, 02:33 AM   #5
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Quote:
Originally Posted by reliable406 View Post
Ok immobiliser still ok after battery disconnect your lucky !

It actually does not need much to start but you really need planet to see what the ecu is seeing as it makes getting to bottom of problem much easier

What you need to check is cam and crank sync yes
engine cranking speed 250rpm min
fuel pressure while cranking 300bar

if these 3 are ok it should fire assuming ecu is unlocking but it should be if key is being read ok.
Providing not communication problems with bsi and ecu ie water in wiring
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Old 21-07-16, 01:19 PM   #6
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Ok thanks guys,
How do I check that the cam and crank are in sync ?
I'm kinda more inclined to think I have a break / short problem poss from
TCS to the ECU? .
This inclination is from P0120 (Thottle / pedal position sensor circuit A)
and P0220 ( Throttle / pedal /position sensor circuit B)
Could this cause the Voltage irregularity whereby ECU / BSI tells the car don't start ?

Is this a good place to start, or is it more likely that the Voltage problem just throws those codes as they are the next in the chain before allowing start ?

Guess what I can do is start tracing wires physically looking for the obvious (breaks / heat damage etc.), then it's try and get my head round using a multimeter again !
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Old 21-07-16, 04:09 PM   #7
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throttle position fault wont stop starting you need planet live data to get the 3 things you need to see.
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Old 21-07-16, 06:25 PM   #8
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yep and that's what I started with a PM to my most local member for a PP scan.
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Old 21-07-16, 08:24 PM   #9
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Post up live data readings when you get them including the immobiliser data
in the BSI and the ecu data i already said
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