 | Home > Puma (Tdci) > Broken down in France again and now UK.....VERY not happy... |
 
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6478   
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The coil is used by the 10AS to tell the keyfob to send the de-immobilise code back to the 10AS.
You can run without a coil, but you have to press the "unlock" button on the fob just before you start. Do you have any illumination of the red alarm LED (under the rev counter) in the instrument pack when you have these non start problems? 4 turns then stop means the 10AS has allowed a start but the engine ECU doesn't (no fuel). No attempt to start with the key turned means the 10AS hasn't allowed a start (hasn't received de-immobilise code from fob). Some other things to try (fuses etc) here: https://www.defender2.net/forum/topic64972.html  1988 90 Td5 NAS soft top
2015 D90 XS SW |
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29th Mar 2019 12:51pm |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6478
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Check the engine ECU loom for damage/fraying/water - perhaps remove the ECU and check in the sockets too.
1988 90 Td5 NAS soft top
2015 D90 XS SW |
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29th Mar 2019 1:58pm |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
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29th Mar 2019 2:05pm |
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| johnnyd Member Since: 13 Apr 2013 Location: Chippenham Posts: 1006 
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Dorsetsmith, do you per chance have Service Message 44410, my temperature gauge does not go into the red
JD 2008 TDCi 2.4 XS CSW |
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29th Mar 2019 2:38pm |
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| johnnyd Member Since: 13 Apr 2013 Location: Chippenham Posts: 1006
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Hi Martin
I assume this is the ECU with 3 looms going into it ? Click image to enlarge JD 2008 TDCi 2.4 XS CSW |
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29th Mar 2019 2:42pm |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6478
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Yep on the bulkhead tucked down behind the engine.
1988 90 Td5 NAS soft top
2015 D90 XS SW |
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29th Mar 2019 2:58pm |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
No i don't |
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29th Mar 2019 4:03pm |
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| johnnyd Member Since: 13 Apr 2013 Location: Chippenham Posts: 1006
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Hmmm that service bulletin says if the PCM is earlier that 2009 then replace it, given mine is 2008 I would say its earlier lol
Where/what is the PCM? JD 2008 TDCi 2.4 XS CSW |
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29th Mar 2019 4:09pm |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6478
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Can't find SSM 44410 on Topix either. PCM = Engine ECU 1988 90 Td5 NAS soft top
2015 D90 XS SW |
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29th Mar 2019 5:53pm |
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| johnnyd Member Since: 13 Apr 2013 Location: Chippenham Posts: 1006
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Could someone do me a favour, can anyone with a 2.4 confirm which relay numbers go in the yellow spaces here, a guy at the garage swapped 2 out to rule out the starter motor relay and I would like to put them back where they were now as its not that.
Click image to enlarge I have two relays ++07513 and ++08011 Thanks JD 2008 TDCi 2.4 XS CSW |
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30th Mar 2019 11:04am |
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| johnnyd Member Since: 13 Apr 2013 Location: Chippenham Posts: 1006
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Well Martin now has my defender.......I have exhausted my skills and analysis, so he is going to have a look next week with more equipment and knowledge than me to see whats going on.......hopefully......
JD 2008 TDCi 2.4 XS CSW |
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30th Mar 2019 6:58pm |
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| familymad Member Since: 13 Dec 2011 Location: Bucks Posts: 3461  
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Good result 1951 80" S1 2.0
1995 110 300TDI 1995 90 300TDI |
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31st Mar 2019 7:22am |
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| diduan Member Since: 13 Oct 2016 Location: Central Balkan Posts: 260 
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My 2.4 was a non-starter once, but after pulling out the main relais it was fine for a while. As the non-starting issue always came back, sooner or later, i was convinced this was not a relais issue. Then one day I twisted a bit the feet of the relais with pliers, no starting issues since. Defender 110 SW MY2011 2.4tdci decat, no EGR
Jeep Wrangler YJ 1990 4.0. Front 78' Dana 60, Rear CUCV 14 bolt |
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31st Mar 2019 11:18am |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6478
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johnnyd now has his 90 back, and a smile on his face compared to the grimace last Saturday
After logging voltages going to the ECU and wiring up a temporary manual starter button the issue was traced to a failed ignition switch which was cutting the ignition power shortly after the key was turned to start. The ECU received power for just long enough to allow a few turns of the engine before it powered down and stopped fuelling and cut the starter relay. Or the engine would 'catch' before this, but the ECU power-down caused a 'cough' in fuelling but the engine would have enough momentum to keep running when it powered back up (just like turning the ignition off and on again quickly when running). Upon removal it also turns out the switch had also been wired up incorrectly when replaced as part of a key barrel/column lock change in the past. This was causing an odd power-down problem when the fan was running and the ignition switched off. Following a new switch and the terminals returning to the right places johnnyd now has the "AUX" position for the radio and heater fans restored as well 
Few other bits and bobs found and sorted at the same time and he went away a happy chappy  1988 90 Td5 NAS soft top
2015 D90 XS SW |
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5th Apr 2019 4:49pm |
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