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Ford Focus 1.6 TDCI. PCM won't scan. Is it dead?
- rich321
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4 years 11 months ago #43524
by rich321
Ford Focus 1.6 TDCI. PCM won't scan. Is it dead? was created by rich321
I have an 09 Ford Focus 1.6 TDCI that wont crank. Engine Malfunction displayed on dash.
PATS is showing error 1:6. Dash is displaying DTC U2510. These both indicate that the PCM isn't talking to the PATS over canbus.
Forscan won't connect.
Checked canbus at OBD. 60 ohms. Good signals on a scope. Good continuity between OBD and PCM.
Power and grounds all good at PCM.
Checked fuses and battery.
+12 from ignition gets to PCM and ECU relay is operating.
If I power up PCM on a bench it draws 200-300mA but Forscan won;t connect.
Checked solering on dash pcb connector. Found some cracks, resoldered but made no difference.
Is PCM dead?
Will PATS stop Forscan connecting to PCM?
Anything else I could check?
Any suggestions welcome!
PATS is showing error 1:6. Dash is displaying DTC U2510. These both indicate that the PCM isn't talking to the PATS over canbus.
Forscan won't connect.
Checked canbus at OBD. 60 ohms. Good signals on a scope. Good continuity between OBD and PCM.
Power and grounds all good at PCM.
Checked fuses and battery.
+12 from ignition gets to PCM and ECU relay is operating.
If I power up PCM on a bench it draws 200-300mA but Forscan won;t connect.
Checked solering on dash pcb connector. Found some cracks, resoldered but made no difference.
Is PCM dead?
Will PATS stop Forscan connecting to PCM?
Anything else I could check?
Any suggestions welcome!
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- Hardtopdr2
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4 years 11 months ago #43525
by Hardtopdr2
Replied by Hardtopdr2 on topic Ford Focus 1.6 TDCI. PCM won't scan. Is it dead?
Did you check can bus wave form at pcm? Even if it ohms good i would check it at pcm.
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- Tyler
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4 years 11 months ago #43530
by Tyler
In my experience, no. I've used Forscan on multiple Ford products with PATS issues, and none will prevent communication with the PCM.
What other modules do you have communication with? Mostly interested in the HS-CAN bus. We don't get the TDCI option in the US.
But I figure the HS-CAN network has to have similar architecture.
I see that you have good network resistance and voltages, but that doesn't mean there isn't a communication problem.
Replied by Tyler on topic Ford Focus 1.6 TDCI. PCM won't scan. Is it dead?
rich321 wrote: Will PATS stop Forscan connecting to PCM?
In my experience, no. I've used Forscan on multiple Ford products with PATS issues, and none will prevent communication with the PCM.
Anything else I could check?
What other modules do you have communication with? Mostly interested in the HS-CAN bus. We don't get the TDCI option in the US.

I see that you have good network resistance and voltages, but that doesn't mean there isn't a communication problem.
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- ShovelHero
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6 months 5 days ago #84744
by ShovelHero
Replied by ShovelHero on topic Ford Focus 1.6 TDCI. PCM won't scan. Is it dead?
Did this get solved? Im having problem exactly like this.
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- Monde
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6 months 5 days ago - 6 months 5 days ago #84746
by Monde
Assuming is never a good thing.
Replied by Monde on topic Ford Focus 1.6 TDCI. PCM won't scan. Is it dead?
Are you using a scanner that can read multiple modules or are you just using a scanner that can only read engine control module code?
Assuming is never a good thing.
Last edit: 6 months 5 days ago by Monde.
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