 | Home > Technical > An annoying issue in a very specific situation. |
 
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| LJMARSDEN Member Since: 08 Jun 2021 Location: Nottingham Posts: 281   
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The specific situation:
I have just updated my bulkhead loom to an XS part number. Received updated 10AS to accommodate CDL and therefore alarm, ultrasonic and sounder abilities etc. The car has been converted to a Petrol V8. I no longer have the standard TD5 ECU, Gone, black plug sat there looking sad. Engine loom gone. The Issue: short and "simple" - The Alarm is sounding with every lock of the vehicle... Rather inconvenient. So, I'm theorising that the 10AS may be wanting a signal from the ECU which is worst case scenario but not entirely since I can mimic some signals with my stand-alone ECU. Best case scenario - its the damn door pin switches and theyre causing the alarm to set off... 
Also, the interior lights do not turn on with the unlocking of the car, which supports my idea of all door pin switches being problematic. I have a major lack of understanding of the 10AS so any help I will be grateful for lol Photo of the car so this post isn't too boring  Click image to enlarge [/u] Luke Marsden 06 V8 1UZFE Defender 90 Instagram: https://www.instagram.com/defender__v8/ |
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9th Mar 2024 10:26pm |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6482 
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10AS doesn’t get a signal back from the ECU, no.
1988 90 Td5 NAS soft top
2015 D90 XS SW |
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10th Mar 2024 8:43am |
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| LJMARSDEN Member Since: 08 Jun 2021 Location: Nottingham Posts: 281
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thats great news. I scanned the CDL wiring diagram and there is a connection. But I assume if left unconnected/ open this will have no effect. Luke Marsden 06 V8 1UZFE Defender 90 Instagram: https://www.instagram.com/defender__v8/ Last edited by LJMARSDEN on 10th Mar 2024 12:37pm. Edited 1 time in total |
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10th Mar 2024 12:36pm |
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| LJMARSDEN Member Since: 08 Jun 2021 Location: Nottingham Posts: 281
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Ok, thank you for the advice I'll try this in a hour or so. 
EDIT: I currently do not have the bonnet switch assy. this will be arriving a week from now. Luke Marsden 06 V8 1UZFE Defender 90 Instagram: https://www.instagram.com/defender__v8/ |
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10th Mar 2024 12:36pm |
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| macfrank Member Since: 05 Nov 2015 Location: somewhere in the north Posts: 993  
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Its related to immobilser IIRC, @Martin? CDL, alarm and immobiliser are separate circuits though. Also this may help debugging them: https://www.kraxlr.de/facts.html#led |
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10th Mar 2024 1:25pm |
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| LJMARSDEN Member Since: 08 Jun 2021 Location: Nottingham Posts: 281
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Red LED will not work full stop Luke Marsden
06 V8 1UZFE Defender 90 Instagram: https://www.instagram.com/defender__v8/ |
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10th Mar 2024 3:04pm |
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| LJMARSDEN Member Since: 08 Jun 2021 Location: Nottingham Posts: 281
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Afraid this has not worked Luke Marsden 06 V8 1UZFE Defender 90 Instagram: https://www.instagram.com/defender__v8/ |
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10th Mar 2024 3:17pm |
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| macfrank Member Since: 05 Nov 2015 Location: somewhere in the north Posts: 993
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You mean not at all? It's dark all the time? With driver door closed (or switch disconnected)? And just to confirm: you get only a single horn signal when locking with the remote? |
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10th Mar 2024 3:44pm |
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| LJMARSDEN Member Since: 08 Jun 2021 Location: Nottingham Posts: 281
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Yes.
It appears I've resolved the issue with the horn/ central locking - my own fault as I left the actuator suspended which was causing the alarm to sound once locked. The current issue that just developed ( I know, another one) is it appears I have lost a common earth amongst a few features; The stereo, hazard light switch & the horn itself....... Luke Marsden 06 V8 1UZFE Defender 90 Instagram: https://www.instagram.com/defender__v8/ |
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10th Mar 2024 8:52pm |
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