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Park brake fault system not functional
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Flying Scotsman
 


Member Since: 04 Mar 2011
Location: The dark side of the moon.
Posts: 434

Scotland 2010 Discovery 4 3.0 TDV6 HSE Auto Buckingham BlueDiscovery 4
Park brake fault system not functional

Sunday hand brake was screaming for around 5 mins, switched car off and left it with the handbrake off and in gear, on the way home both the red and yellow lights started to flash on the dash and constant bing bing bing. Monday night stripped rear discs cleaned and lubed rear shoes, dismantled EPB actuator to see if it needed to be wound back, looked fine. Still no response from the handbrake, plugged in the IId tool to test the operation of the handbrake and a row of small gggggggggggggggggggg appeared on the screen.

Only fault code C1A000 unknown fault.

There is no noise or response from the handbrake.

Any thoughts
 You only get one lap, make it count !!  
Post #128666220th May 2014 8:40 am
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Iguana
 


Member Since: 14 Oct 2013
Location: 'Sunny' Zomerset
Posts: 9424

Ukraine 

Does the brake work now, or is it permanently off? so essentially you're unable to apply?

For the code drop Patrick (IID tool) a mail, he was very helpfull with my EPB issues and had some good thoughts around this area.

Mine was jammed off, so could not apply EPB, we had to manually carry out an unjam process before being able to re-latch using a diagnostic tool - all now works well.

Thumbs Up
 Iggy/Ieuan

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MY05 Disco 3 'S'
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Post #128668120th May 2014 9:28 am
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Flying Scotsman
 


Member Since: 04 Mar 2011
Location: The dark side of the moon.
Posts: 434

Scotland 2010 Discovery 4 3.0 TDV6 HSE Auto Buckingham BlueDiscovery 4

Ieuan there is nothing from the handbrake, lights on dash go mad when you lift or lower the switch, that's about it Big Cry
 You only get one lap, make it count !!  
Post #128672320th May 2014 12:12 pm
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Flying Scotsman
 


Member Since: 04 Mar 2011
Location: The dark side of the moon.
Posts: 434

Scotland 2010 Discovery 4 3.0 TDV6 HSE Auto Buckingham BlueDiscovery 4

Update:

Checked my handbrake with the IID tool again Fail E3 with new fault code appeared C1A00-17 AB, cant find anything with the AB. but the code looks like electrical battery/ alternator? Big Cry

Any thoughts !!!
 You only get one lap, make it count !!  
Post #128780122nd May 2014 8:42 am
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Iguana
 


Member Since: 14 Oct 2013
Location: 'Sunny' Zomerset
Posts: 9424

Ukraine 

Did you see this post?
http://www.disco3.co.uk/forum/topic104842.html

Sounds like could be alternator - get it checked, got a voltmeter?

Thumbs Up
 Iggy/Ieuan

Current LR =
2015 RR Sport Autobiography
&
1992 Land Rover Defender Camper

- Gone but not forgotten:
MY10 D4 GS
MY05 Disco 3 'S'
MY14 FL2 HSE manual in Blue
MY15 Disco 4 HSE Lux in Santorini Black
MY08 Disco 3 SE manual in Buck Blue
1960 Series 2 88" (No idea why I sold it!) 
 
Post #128780622nd May 2014 8:47 am
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20830

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

Check the fuse in the BJB firstly.

Secondly, check to see if it has had the overlay wiring loom fitted. It joins into the loom just infront of the compressor cover, and cable tied to the loom inside of the chassis rail. Have seen a few wiring issues caused by poor repairs

Also, inside the N/S/F wheelarch, the big blue connector with the Green/Yellow wire is guilty for being damaged. This is the main power feed for the EPB motor.
Before taking the car to bits, check to see if it is receiving a good +12.5v at the module Thumbs Up

EDIT: If it was the alternator, I would expect to see a fault code in the PCM for low volts Thumbs Up
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Post #128780822nd May 2014 8:49 am
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Flying Scotsman
 


Member Since: 04 Mar 2011
Location: The dark side of the moon.
Posts: 434

Scotland 2010 Discovery 4 3.0 TDV6 HSE Auto Buckingham BlueDiscovery 4

DM

Checked and changed the 5 amp fuse in the glove box, looked at the one under the bonnet looks ok.

When you lift the switch, the brass bar in the actuator turns but no other movement. so it is getting power. Actuator goosed !!
 You only get one lap, make it count !!  
Post #128781622nd May 2014 9:16 am
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20830

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

Is it getting full battery voltage at the module though. It may be getting enough power to turn the rod, but not enough to keep the lights off. Have seen that a few times.
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Post #128782322nd May 2014 9:30 am
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Flying Scotsman
 


Member Since: 04 Mar 2011
Location: The dark side of the moon.
Posts: 434

Scotland 2010 Discovery 4 3.0 TDV6 HSE Auto Buckingham BlueDiscovery 4

How do i or you check it ????? Rolling with laughter
 You only get one lap, make it count !!  
Post #128782922nd May 2014 9:41 am
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20830

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

Use a DMM. Should have battery voltage on green/yellow wire, with very little resistance on said wire
 My D3 Build Thread

TDV8 Retrofit Build Thread 
 
Post #128783022nd May 2014 9:43 am
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Flying Scotsman
 


Member Since: 04 Mar 2011
Location: The dark side of the moon.
Posts: 434

Scotland 2010 Discovery 4 3.0 TDV6 HSE Auto Buckingham BlueDiscovery 4

thanks Mikey, I will check when i get home Thumbs Up
 You only get one lap, make it count !!  
Post #128783822nd May 2014 10:14 am
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