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Post by Rhubarb on Oct 31, 2014 0:32:50 GMT 1
Yes I know but it wouldn't be the first time a new part turns out to be faulty as well. The EGR valve position voltage is greater than the allowable limit when closed and is not being commanded by the PCM hence me asking. Checking another vehicle and its supply 12 v is switched on/off at key on Mine isn't ? Keep throwing questions at me though as it helps Fuses? Have you checked through them thoroughly?
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Post by Karl on Oct 31, 2014 0:35:13 GMT 1
Can't see a fuse in the circuit, but will have to check all the lives/grounds into PCM
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Post by Noberator on Oct 31, 2014 0:44:59 GMT 1
Yes I know but it wouldn't be the first time a new part turns out to be faulty as well. The EGR valve position voltage is greater than the allowable limit when closed and is not being commanded by the PCM hence me asking. Checking another vehicle and its supply 12 v is switched on/off at key on Mine isn't ? Keep throwing questions at me though as it helps If your sure the EGR is now working ok as it should there's a wiring fault somewhere affecting the signal voltage or the PCM is at fault.
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Post by Noberator on Oct 31, 2014 1:06:50 GMT 1
Checking another vehicle and its supply 12 v is switched on/off at key on Mine isn't ? Keep throwing questions at me though as it helps If your sure the EGR is now working ok as it should there's a wiring fault somewhere affecting the signal voltage or the PCM is at fault. Let us know the outcome ta. Worse case scenario it's off to China.
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remmington
Apprentice
Owns Spark Eroder
Posts: 4,971
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Post by remmington on Oct 31, 2014 7:57:18 GMT 1
Ford Focus 2.0 dw diesel Came in mil on , flags p1335 pcm (egr position sensor performance b circuit) don't have full description With me now Key on connected I had pin 1 5v ref , pin 3 ground 0.1 v , pin 4 1.4 v supply , pin 5 ground 0.1 v pin 6 1.0 signal Removed egr was blocked/stuck/frozen Replaced and dtc clears and retest ok , unable to carry out learn reset Road test and recheck dtc returns though not mil Disconnect pcm and and egr load test with 21w bulb Resistances also checked 0.2 ohms Pin 4 should be 12 v , so recheck at pcm also 1.4 v So why isn't PCM providing 12 v ? Has old EGR damaged the pcm transistors Or should i be looking towards something else Karl.... I have one of these on the go as well. 2008 Ford Galaxy 2.0 TDci. 130k on clock Same faultcode....The one here splutters (not too far short of a misfire). From cold for a few mins. Then problem clears! Been thru the wiring and found nothing. No MIL on. Customer complains of cold start issue (but starts ok here, engine rocks about). If it was not for the faultcode, I would think ours is a tiny amount of air in the fuel! The good news with the one here, owner not too keen on going any further with diagnosis.
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Deleted
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Post by Deleted on Oct 31, 2014 13:36:42 GMT 1
Ford Focus 2.0 dw diesel Came in mil on , flags p1335 pcm (egr position sensor performance b circuit) don't have full description With me now Key on connected I had pin 1 5v ref , pin 3 ground 0.1 v , pin 4 1.4 v supply , pin 5 ground 0.1 v pin 6 1.0 signal Removed egr was blocked/stuck/frozen Replaced and dtc clears and retest ok , unable to carry out learn reset Road test and recheck dtc returns though not mil Disconnect pcm and and egr load test with 21w bulb Resistances also checked 0.2 ohms Pin 4 should be 12 v , so recheck at pcm also 1.4 v So why isn't PCM providing 12 v ? Has old EGR damaged the pcm transistors Or should i be looking towards something else have you tested it koer ? does it have any control with the codes cleared koer ? does ecm supply control on both solenoid control wires ? sorry lot of questions but ecm that supply power and ground control need checking eng running..
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Post by Karl on Oct 31, 2014 19:55:43 GMT 1
I haven't checked engine running but will do , on the others I checked at key on engine off Both had 12v for about 20 seconds so knew something was up with this one.
Live data commands are all present , and can command it open/close (need to confirm if it is actually moving)
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Deleted
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Post by Deleted on Oct 31, 2014 20:41:13 GMT 1
I haven't checked engine running but will do , on the others I checked at key on engine off Both had 12v for about 20 seconds so knew something was up with this one. Live data commands are all present , and can command it open/close (need to confirm if it is actually moving) Does look like an output driver fault , they can re-set sometimes when pcm is up and running, If your brave you could run a fused feed to it and check the control has it not logged a control circuit fault ?
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Post by Karl on Oct 31, 2014 21:00:59 GMT 1
I haven't checked engine running but will do , on the others I checked at key on engine off Both had 12v for about 20 seconds so knew something was up with this one. Live data commands are all present , and can command it open/close (need to confirm if it is actually moving) Does look like an output driver fault , they can re-set sometimes when pcm is up and running, If your brave you could run a fused feed to it and check the control has it not logged a control circuit fault ? Not yet it must need a longer period to realise what's up
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Post by valhalla on Oct 31, 2014 23:58:05 GMT 1
What controller is this DW10 running? The output driver stage might come back with a few key-cycles (allowing several seconds at each stage) as I have seen this on a Visteon control (internal FMC software), albeit a different engine programme.
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Post by Karl on Nov 1, 2014 0:21:18 GMT 1
What controller is this DW10 running? The output driver stage might come back with a few key-cycles (allowing several seconds at each stage) as I have seen this on a Visteon control (internal FMC software), albeit a different engine programme. We'll see next week
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Post by Karl on Nov 4, 2014 14:57:40 GMT 1
Right ok back to this one today
Got another car in to compare against
And had the same figures, also checked with engine running
Checked on this spare car if I could actually carry out an egr relearn which I did successfully ( so ruled out an Etis/ids error)
Carried out actuator drive with ids can feel solenoid open/close
Temp install old unit and back probe Pin 4 while activating get between 1-6v Attempted to carry out relearn still fails
I've ordered another egr as new one was opened before I had it
We will see tomorrow
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Deleted
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Post by Deleted on Nov 4, 2014 22:34:36 GMT 1
Right ok back to this one today Got another car in to compare against And had the same figures, also checked with engine running Checked on this spare car if I could actually carry out an egr relearn which I did successfully ( so ruled out an Etis/ids error) Carried out actuator drive with ids can feel solenoid open/close Temp install old unit and back probe Pin 4 while activating get between 1-6v Attempted to carry out relearn still fails I've ordered another egr as new one was opened before I had it We will see tomorrow Doesnt seem right, if the others were 12v feed key on then this ones faulty , i would have to put a scope on it myself .
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Post by Karl on Nov 4, 2014 22:41:48 GMT 1
Right ok back to this one today Got another car in to compare against And had the same figures, also checked with engine running Checked on this spare car if I could actually carry out an egr relearn which I did successfully ( so ruled out an Etis/ids error) Carried out actuator drive with ids can feel solenoid open/close Temp install old unit and back probe Pin 4 while activating get between 1-6v Attempted to carry out relearn still fails I've ordered another egr as new one was opened before I had it We will see tomorrow Doesnt seem right, if the others were 12v feed key on then this ones faulty , i would have to put a scope on it myself . Yes I know doesn't seem right to me either It might well come to having to record a good known pattern against this one Clutching at straws
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Post by Karl on Nov 7, 2014 21:51:06 GMT 1
It's out the door for now , after a PCM/TCM update , and 2 brake pedal switches It seems to behave itself, taken home twice and drove perfect
We shall see
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