Old Dec 16, 2013 | 10:22 PM
  #24  
jools reluctant mechanic's Avatar
jools reluctant mechanic
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Joined: Dec 2013
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From: essex
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Yes indeed, thanks for that welcome!

Even better for me is I'm working for free (well maybe beer and pizza) in the dark and cold - both literally and metaphorically in this case

I guess that's no worse than loosing time/money/bonus in the day job tho!

Anyway, all the dash lights now seem to operate correctly, including the ABS.

While looking on the net, I found an online manual at
http://ford.workshop-manuals.com/C-MAX_2003.75_06.2003/index.php?id=663

Which effectively covers the tests I did on the starter relay/circuit to the PCM when I first started looking. Their conclusion appears to be, if there is 10v+ at C1013 pin 1 when the key is in the starter position (which there is) and the relay is working correctly (which it is) and the resistance to the red/black wire to the PCM is less than 5 ohms (which it is), then the PCM has failed.

I did direct activate the starter with the ignition on and the engine still doesn't fire - is there (should there be) a direct ignition feed to the PCM when the ignition is on?

I found if I pull relay 14, what little current flows through C1013 pin 2 stops altogether. So I now wonder which wire completes the circuit from the PCM to earth and if the problem is there.

I'm going to call BBA in the morning to see what the fault was they found/repaired and see if they will look again at the PCM for this.
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