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Transit 2.4di no communication to pcm

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Transit 2.4di no communication to pcm

Postby reaperkinqs » Wed Nov 22, 2017 10:22 pm

Hi all went to get my truck remapped today and the re mapper couldn't connect to the pcm with his tool i check all the fusses and relays but still no joy cant even read the fault codes as no scanner will connect to the van there is power going to the obd port so not shore y it wont connect i think its resonantly happen as i had a new fuel pump fitted about 3 months ago and it coded to the van no problem the van starts and drives no problems at all hoping someone on here could help and i have no idea what it could be :? :? :?

THANKS IN ADVANCED :D :D :D
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Re: Transit 2.4di no communication to pcm

Postby karl » Wed Nov 22, 2017 10:26 pm

check that the pins don't have the green stuff round them,

corrosion :D

also check wiring and use a multi meter to check for power to the obd port

also having a new pump wouldn't effect this "was it virginised the pump" :?:
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Re: Transit 2.4di no communication to pcm

Postby reaperkinqs » Wed Nov 22, 2017 10:38 pm

karl wrote:check that the pins don't have the green stuff round them,

corrosion :D

also check wiring and use a multi meter to check for power to the obd port

also having a new pump wouldn't effect this "was it virginised the pump" :?:


this is power going to the obd port because it power on the scanner just wont connect to the ecu

the pump was second hand and my friend virginised it with his snap on solus

will check the wiring tomorrow and see if the is any corrosion on the pins :D
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Re: Transit 2.4di no communication to pcm

Postby karl » Wed Nov 22, 2017 10:43 pm

if you had no power to the ecu the van wouldn't run

and its the ecu that give the power to the port 5 v
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Re: Transit 2.4di no communication to pcm

Postby reaperkinqs » Wed Nov 22, 2017 10:53 pm

karl wrote:if you had no power to the ecu the van wouldn't run

and its the ecu that give the power to the port 5 v


The van runs and drives fine and there is power going to the obd port but when u plug a scanner in to the obd it will power the scanner on but wont connect to the ecu keeps saying communication error
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Re: Transit 2.4di no communication to pcm

Postby knobby1 » Wed Nov 22, 2017 10:56 pm

reaperkinqs wrote:The van runs and drives fine and there is power going to the obd port but when u plug a scanner in to the obd it will power the scanner on but wont connect to the ecu keeps saying communication error


What scanner are you using..?? Just remember....Mk6 machines are "NOT" OBD-II compliant.

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Re: Transit 2.4di no communication to pcm

Postby karl » Wed Nov 22, 2017 10:58 pm

reaperkinqs wrote:
karl wrote:if you had no power to the ecu the van wouldn't run

and its the ecu that give the power to the port 5 v


The van runs and drives fine and there is power going to the obd port but when u plug a scanner in to the obd it will power the scanner on but wont connect to the ecu keeps saying communication error


what code reader you using ?

not many will read these vans as obd2 came out in 2004 for diesel's and 1996 for petrol

so being a transit mrk6 they are only obd 1
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Re: Transit 2.4di no communication to pcm

Postby reaperkinqs » Wed Nov 22, 2017 11:08 pm

karl wrote:
reaperkinqs wrote:
karl wrote:if you had no power to the ecu the van wouldn't run

and its the ecu that give the power to the port 5 v


The van runs and drives fine and there is power going to the obd port but when u plug a scanner in to the obd it will power the scanner on but wont connect to the ecu keeps saying communication error


what code reader you using ?

not many will read these vans as obd2 came out in 2004 for diesel's and 1996 for petrol

so being a transit mrk6 they are only obd 1


code reader snap on solus i use it on all my transit works perfect ive used it on this transit it before and now it wont work
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Re: Transit 2.4di no communication to pcm

Postby reaperkinqs » Wed Nov 22, 2017 11:12 pm

karl wrote:
reaperkinqs wrote:
karl wrote:if you had no power to the ecu the van wouldn't run

and its the ecu that give the power to the port 5 v


The van runs and drives fine and there is power going to the obd port but when u plug a scanner in to the obd it will power the scanner on but wont connect to the ecu keeps saying communication error


what code reader you using ?

not many will read these vans as obd2 came out in 2004 for diesel's and 1996 for petrol

so being a transit mrk6 they are only obd 1


all so resonantly the battery has been completely draining for no reason only happen every now then but ive had my dash change to the mk7 one with the gear stick all done when the dash was complete the battery was completely dead do u think it could be a bad earth some where
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Re: Transit 2.4di no communication to pcm

Postby karl » Fri Nov 24, 2017 5:30 pm

bad earth or rear lights still on the back

I also had this with my own van battries flat in the morning and it was a relay clicking away all night and I traced it to a bad earth under the dash :(
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Re: Transit 2.4di no communication to pcm

Postby Burtie1 » Fri Dec 15, 2017 8:53 pm

karl wrote:bad earth or rear lights still on the back

I also had this with my own van battries flat in the morning and it was a relay clicking away all night and I traced it to a bad earth under the dash :(


Where about under the dash I have a mk6 2.4di and my scanner won’t connect to mine but often I’ve heard a clicking under the dash can you tell me exactly where the fault was
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