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Ford mondeo 2002. 2.0 tdci. DTC's on throttle pedal sensor.

posted May 10, 2016 08:11:42 by Inge_Jeppesen
Hello.

When this car acts up the glow plug lamp flashes, and you can't rev it. P1342, P1343 and P1344.
I want to change the pedal. Anyone know if there could be another issue?

Inge.


Norway
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8 replies
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Noah said May 10, 2016 12:02:25
Other than possibly a connector issue or pcm problem, I don't see how anything other than a faulty app could set codes for all 3 monitored circuits. I don't have service info for the Mondeo, but I bet that at least 2 if not all 3 circuits have their own reference voltage source so as to not loose everything if one goes down. So that rules out a feed wire open or short (which I'm sure you checked anyway). Is there any scan data pertaining to the position of the 3 sensors? You can do the old sweep test on each signal wire with a scope of course. I don't know how the glow plug light factors in to this however...
Massachusetts, USA
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Dylan said May 10, 2016 17:14:00
I don't know how the glow plug light factors in to this however...


Seems Ford uses the glow plug light to indicate an engine malfunction...
Belgium, Europe
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Inge_Jeppesen said May 10, 2016 19:57:44
Have pid monitor ability on all 3. Worked fine when testing. Measured all 3 ref wires. Steady 5 volt. Jumped them to their respective return wire and the expected result showed on the scanner. When I wiggle the pedal from side to side the signal is changing a little. Car has about 300.000 Km on it.
Norway
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Inge_Jeppesen said May 10, 2016 19:59:41
By the way Dylan is right. The car will flash the glowplug light when it goes into limp mode.
Norway
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Tyler said May 10, 2016 23:52:09
Have pid monitor ability on all 3. Worked fine when testing. Measured all 3 ref wires. Steady 5 volt. Jumped them to their respective return wire and the expected result showed on the scanner. When I wiggle the pedal from side to side the signal is changing a little. Car has about 300.000 Km on it.


Good move, sir! I was going to suggest shorting the 5V's to their signals.

The signal varying when the pedal is wiggled sounds fishy to me. I saw a Jaguar recently with a similar APP concern, codes for all three circuits. This may sound crazy, but the pedal itself sounded 'crunchy' when depressed and released, and not just because of the return spring. The new one was smooth as glass.
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George said May 13, 2016 03:30:39
If you reset the codes, do they come back as soon as you turn your ignition on?
I bet that at least 2 if not all 3 circuits have their own reference voltage source so as to not loose everything if one goes down.

They could be internally shared, if you have a scope you can monitor them while you wiggle the wires, or depress the APP, and look for a change.
Please share images, data, or scope captures, and keep us informed.
Thank you.
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Inge_Jeppesen said May 19, 2016 15:55:45
Hello again.

App changed. Not seen it since.

If it does I'll return.

Thanks for your input everyone.

Inge.
Norway
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Dylan said May 19, 2016 17:04:40
Thanks for the feedback Inge ;-)
Belgium, Europe
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