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LJMARSDEN



Member Since: 08 Jun 2021
Location: Nottingham
Posts: 334
United Kingdom 2006 Defender 90 Other HT Java Black
An annoying issue in a very specific situation.
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... Rolling with laughter

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] 4.0 V8 Defender 90

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Post #1027435 9th Mar 2024 9:26pm
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6605
United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
10AS doesn’t get a signal back from the ECU, no.  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #1027450 10th Mar 2024 7:43am
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macfrank



Member Since: 05 Nov 2015
Location: somewhere in the north
Posts: 1076
Germany 2015 Defender 110 Puma 2.2 SW Keswick Green
Is it one honk when locking? Then I‘d go for the door switches first. Note that pressing the pin actually _dis_connects the switch from ground, so try to unplug all door, rear door and bonnet switches, one after one and lock after each and see if AS10 is happy.
Post #1027459 10th Mar 2024 9:30am
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LJMARSDEN



Member Since: 08 Jun 2021
Location: Nottingham
Posts: 334
United Kingdom 2006 Defender 90 Other HT Java Black
Martin wrote:
10AS doesn’t get a signal back from the ECU, no.


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. 4.0 V8 Defender 90

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Last edited by LJMARSDEN on 10th Mar 2024 11:37am. Edited 1 time in total
Post #1027477 10th Mar 2024 11:36am
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LJMARSDEN



Member Since: 08 Jun 2021
Location: Nottingham
Posts: 334
United Kingdom 2006 Defender 90 Other HT Java Black
macfrank wrote:
Is it one honk when locking? Then I‘d go for the door switches first. Note that pressing the pin actually _dis_connects the switch from ground, so try to unplug all door, rear door and bonnet switches, one after one and lock after each and see if AS10 is happy.


Ok, thank you for the advice I'll try this in a hour or so. Thumbs Up

EDIT:

I currently do not have the bonnet switch assy. this will be arriving a week from now. 4.0 V8 Defender 90

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Post #1027478 10th Mar 2024 11:36am
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macfrank



Member Since: 05 Nov 2015
Location: somewhere in the north
Posts: 1076
Germany 2015 Defender 110 Puma 2.2 SW Keswick Green
LJMARSDEN wrote:
Martin wrote:
10AS doesn’t get a signal back from the ECU, no.


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.


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
Post #1027483 10th Mar 2024 12:25pm
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LJMARSDEN



Member Since: 08 Jun 2021
Location: Nottingham
Posts: 334
United Kingdom 2006 Defender 90 Other HT Java Black
Red LED will not work full stop 4.0 V8 Defender 90

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Post #1027490 10th Mar 2024 2:04pm
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LJMARSDEN



Member Since: 08 Jun 2021
Location: Nottingham
Posts: 334
United Kingdom 2006 Defender 90 Other HT Java Black
macfrank wrote:
Is it one honk when locking? Then I‘d go for the door switches first. Note that pressing the pin actually _dis_connects the switch from ground, so try to unplug all door, rear door and bonnet switches, one after one and lock after each and see if AS10 is happy.


Afraid this has not worked 4.0 V8 Defender 90

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Post #1027492 10th Mar 2024 2:17pm
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macfrank



Member Since: 05 Nov 2015
Location: somewhere in the north
Posts: 1076
Germany 2015 Defender 110 Puma 2.2 SW Keswick Green
LJMARSDEN wrote:
Red LED will not work full stop


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?
Post #1027494 10th Mar 2024 2:44pm
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LJMARSDEN



Member Since: 08 Jun 2021
Location: Nottingham
Posts: 334
United Kingdom 2006 Defender 90 Other HT Java Black
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....... 4.0 V8 Defender 90

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Post #1027543 10th Mar 2024 7:52pm
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