 | Home > Puma (Tdci) > 2.4 Puma won't start |
 
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| Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 2001  
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Could well be you need to do the instrument cluster bypass mod.
https://www.defender2.net/forum/topic47486...nt+cluster Have a read of this and all will become apparent. Page 7 post from Martin explains how to do the instrument cluster bypass (shunt) mod. |
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25th Oct 2021 4:34pm |
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| JohnGr Member Since: 25 Oct 2021 Location: stuck at home Posts: 18 |
Much appreciated, I'll be giving it a go
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25th Oct 2021 5:56pm |
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| JohnGr Member Since: 25 Oct 2021 Location: stuck at home Posts: 18 |
[quote="Ianh"]Could well be you need to do the instrument cluster bypass mod.
https://www.defender2.net/forum/topic47486...nt+cluster Much appreciated, I'll be giving it a go
Tried it this morning, but still nothing.... thanks anyway. Has anyone any other suggestions I could try? |
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26th Oct 2021 12:26pm |
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| Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 2001
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Check the relays are sitting tight, remove them, they should feel tight, then reinsert , the next to check is the connections to the ignition switch , they can come loose or be making bad contact, then the ignition switch itself which is a known issue
https://www.defender2.net/forum/topic78714...ion+barrel |
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27th Oct 2021 11:40am |
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| JohnGr Member Since: 25 Oct 2021 Location: stuck at home Posts: 18 |
Thanks Ian,
I've tried the relays and connections, earths etc. and took the AS10 box out (with difficulty) but nothing to see in there, so I've just ordered a new ignition switch as the current one does look a bit sloppy tbh. I'll update my post as and when with any progress; fortunately I've got an older 110 to get around in that does start 
Once again thanks for your help. |
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27th Oct 2021 3:24pm |
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| thegreatwhitedefender Member Since: 27 Oct 2021 Location: London Posts: 1 
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I am having the exact issue. To the letter! Tried everything. Same code as you. It will crank, turn few times and dies. then it wont do anything, only if I clear the code. Please heeeeelp. 😩
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27th Oct 2021 9:48pm |
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| Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 2001
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^^^^^^^^^^
listing what you have checked already will help members offer advice on where the problem may be. |
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28th Oct 2021 5:28pm |
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| JohnGr Member Since: 25 Oct 2021 Location: stuck at home Posts: 18 |
Update; just changed the ignition switch and still no joy
It turns over once or so, stops and won't turn over again for 10 seconds or so. |
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29th Oct 2021 1:36pm |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
I’ve got a 2.4 tdci Puma 2009 basic key model without immobiliser / alarm, you still have AS10 immobiliser / alarm unit in place but in ( bypass Mode sending signal to the engine ECU so you can start the engine) with out key fob
So pay you check fuse and 12v dc supply's to the AS10 immobiliser / alarm pin 10 ignition input feed from fuse 8 --10 amp Pin 12 Ground input Pin 25 Battery voltage input fuse 7 -- 20 amp Is this DTC P1602-31 immobilizer engine still present 
also make shore wire that carry immobilizer signal to and from AS10 is not open circuit or short to ground Pin 14 AS10 ------- to ------- pin 3 inst cluster in-----------pin 4 inst cluster out--------------------- ECM---- end----- plug---- C0872---G4 ( light green / slat gray tracer )  Click image to enlarge gray plug AS10 alarm unit Click image to enlarge Is battery in good charge stat Last edited by dorsetsmith on 29th Oct 2021 7:09pm. Edited 5 times in total |
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29th Oct 2021 2:28pm |
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| JohnGr Member Since: 25 Oct 2021 Location: stuck at home Posts: 18 |
Thanks Dorsetsmith,
I have checked the fuses, but I'll go through your list of suggestions tomorrow. Appreciating the input. |
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29th Oct 2021 3:59pm |
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| JohnGr Member Since: 25 Oct 2021 Location: stuck at home Posts: 18 |
Hi Dorsetsmith
I’ve had a quick look, but it’s been raining proper. All the fuses relays and wires seem good with power. There isn’t any power on the grey plug that I can see. The smaller green plug does appear to have power. The most recent codes are now : Code P1602 - immobilizer / engine control module communication error intermittent Code U3000 - control module (not tested permanent) Code U0401 - invalid data received from engine control module /powertrain control module (not tested DTC) Once it’s dried off I’ll have another go. I’m usually ok with spanners, but electrics really isn’t my thing tbh  |
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1st Nov 2021 11:50am |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
There isn’t any power on the grey plug that I can see.
pin 10 ignition input feed from fuse 8 --10 amp this is only powered then ignition switch in pos 2 Pin 12 Ground input Pin 25 Battery voltage input fuse 7 -- 20 amp this powered all the time from the starting battery Test between pin 12 Ground input and pin25 12v must be present all the time Test between pin 12 Ground input and pin 10 ignition input feed from fuse 8 --10 amp this is only powered then ignition switch in pos 2 12v must be present only with ignition switch in pos 2 |
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1st Nov 2021 12:35pm |
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| JohnGr Member Since: 25 Oct 2021 Location: stuck at home Posts: 18 |
UPDATE
Hi Dorsetsmith Well, the good news is it has started, but I’m unaware of what I’ve done to do it which is worrying. I went back to basics and rechecked the earths (which I’d done several time before) and also ran an additional earth from the bulkhead earth direct to the battery, put the AS10 and instrument connectors back in and the dam thing started. I removed the additional earth and didn’t expect it to start, but it did, so stopped and restarted it several times. I plugged the Nanocom in and it’s clear of faults. I’m still not convinced I’ve found it, so it’ll only be local journeys for now where I could tow it back with the other one. Tbh I’ve had this Defender for quite a few years and never had any electrical gremlins before. Anyway, just like to thank you and Ianh for your help; much appreciated
And hope thegreatwhitedefender gets his truck fixed soon, if it’s not already done. |
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2nd Nov 2021 1:53pm |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
instrument connectors have been none have a problem with dry soldered joints i.e. the pin instrument connectors and PCB of the instrument dash
earthing is norther one i.e. starting at the battery down the chassis and on to the transfer box and next across to the driver side flat brad from chassis to the body work under the driver foot well one main earthing headers is behind coolant expansion tank chassis wiring loom earthing point is off side transfer box 6mm bolt 2.4 Puma have a problem with engine wiring looms that rub against engine metal work and this can give problems |
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2nd Nov 2021 3:56pm |
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