[Belzebut]

Hi,

We have a Ford Focus 16d from 2005 with a bus can problem.

We don't have any dialog with PCM.

We try with 3 different ecu's but no way, also we put 2 dashbord and no way to..

We put a wire to dashboard but no communication with ecu. We have 60 Ohms on obd plug between 8 and 14... We have communication with every others ecu's...

Can somebody help us ?

Thanks,

[McMihai]

you may have a problem with the PCM.
Try searching the electrical scheme of your car.
  checks the positive and negative for PCM,
  check in PCM can bus line and instrument panel, disconnect the wires and measure the resistance at pins of CAN BUS (120 Ohms) of each unit
 
I think the line can bus OBD2 . between pins 6 and 14.

You can check the CAN bus with an oscilloscope ....
just check for communication
(See an example of checking Astra H)

[diagnosiks]

FYI
Ford PCM is connected over HS-CAN on DLC Pin6(CAN-H) and Pin14(CAN-L)
on PCM (1.6tdci 109HP) HS-CAN is on PCM grey connector a3(CAN-L) and a4(CAN-H)
You should have about 0 ohms between DLC Pin6 and PCM a4 and also about 0 ohms between DLC Pin14 and PCM a3.
BR

[Belzebut]

Hi guys,

I check and have 120 ohms on dashboard and ecu to.

But yes i check wih oscilloscope and have a communication problem.

We disconnect every ecu's but problem stay.

We make a mistake somewhere....

Thanks for your help.. I will give news later

[Ashraf6119]

You need to check the fuses properly in engine bay fuse box also wiring from fuse box to your Engine ECU............

1) When you put your ignition ON do you get power to your glow plugs, Air Mass, and EGR.............?

[leeshaz]

Did you sort this one out?

[sev611]

I know this is a old post but you can not just change pcm or ipc and think i will work it has to bee initialased to each other and it can just be done with ids and a online account with ford normaly it is the ipc that dies
rgds sev

[Belzebut]

We finaly the problem. The cable was broken between dash and ecu.
We putcable but no way.
After i cross all the cable long and we have communication .

Thanks for help

[Ashraf6119]

We finaly the problem. The cable was broken between dash and ecu.
We putcable but no way.
After i cross all the cable long and we have communication .

Thanks for help

Where was the cable broken.........? Can you please explain more