Member Since: 22 Sep 2018
Location: Hershey, PA
Posts: 56
C1A34 DTC Code Next Steps? UPDATE: Problem Solved!
My LR3 will throw an amber NRHO Fault after
(a) Attempting to raise to off-road height or
(b) Attempting to lower to access height.
The odd thing is it raises equally up to a point and quits.
Here it is shown fairly high +1 inch or so?
Which of the following is likely to be an issue?
Click image to enlarge
2008 Land Rover LR3 SE 4.4L
2010 Jaguar XF 4.2L
2019 No Boundaries 16.5 Off Road Trailer (Caravan)
Last edited by biztechrx on 10th Oct 2018 7:50 pm. Edited 1 time in total
26th Sep 2018 9:36 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10364
You have a leaking compressor pipe don’t you
26th Sep 2018 9:58 pm
biztechrx
Member Since: 22 Sep 2018
Location: Hershey, PA
Posts: 56
The Pilot Exhaust Valve WAS leaking a bit until I put a tad of Lexel Sealant around the hose as a temporary fix until the X8R repair kit gets here.
This seems to be a different issue?2008 Land Rover LR3 SE 4.4L
2010 Jaguar XF 4.2L
2019 No Boundaries 16.5 Off Road Trailer (Caravan)
26th Sep 2018 10:08 pm
Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1783
I'll have a guess at the rear height sensor has bad connection (plug) or broken wire especially as it goes part way up and down
27th Sep 2018 9:38 am
biztechrx
Member Since: 22 Sep 2018
Location: Hershey, PA
Posts: 56
That may just be the correct diagnosis? I just read some Data Streams from the 4 sensor's voltage and the other 3 are showing around 2.05v +/- while the right rear is showing 1.75v.
The data streams are also showing the other 3 corners will raise by about 10mm while the the Right Rear does not raise at all until the system throws an error.2008 Land Rover LR3 SE 4.4L
2010 Jaguar XF 4.2L
2019 No Boundaries 16.5 Off Road Trailer (Caravan)
27th Sep 2018 3:45 pm
biztechrx
Member Since: 22 Sep 2018
Location: Hershey, PA
Posts: 56
Interesting that while the voltage does not match the other sensors, I don't get the following fault:
C1A75XX Right-Hand rear height sensor signal voltage out of range (mechanical).
2008 Land Rover LR3 SE 4.4L
2010 Jaguar XF 4.2L
2019 No Boundaries 16.5 Off Road Trailer (Caravan)
27th Sep 2018 9:14 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10364
It is in range.
It’s not 0 or 5
27th Sep 2018 10:02 pm
biztechrx
Member Since: 22 Sep 2018
Location: Hershey, PA
Posts: 56
This thread has a similar issue.
I've inspected the wires for visible damage and don't see any.
Hmmm????
More suspension - rear valve block A1A34 - RESOLVED
2008 Land Rover LR3 SE 4.4L
2010 Jaguar XF 4.2L
2019 No Boundaries 16.5 Off Road Trailer (Caravan)
4th Oct 2018 9:56 pm
Dan1720v
Member Since: 28 Mar 2018
Location: Street/Somerset
Posts: 176
How far back did you check? I’ve found breaks in the wiring about 18” away from the sensor as the conduit takes in water.
5th Oct 2018 6:53 am
biztechrx
Member Since: 22 Sep 2018
Location: Hershey, PA
Posts: 56
The search continues...
Trying to locate the 20 pin connector in the boot to run an end-to-end continuity test on the two suspect wires.2008 Land Rover LR3 SE 4.4L
2010 Jaguar XF 4.2L
2019 No Boundaries 16.5 Off Road Trailer (Caravan)
5th Oct 2018 11:26 am
biztechrx
Member Since: 22 Sep 2018
Location: Hershey, PA
Posts: 56
Dan1720v wrote:
How far back did you check? I’ve found breaks in the wiring about 18” away from the sensor as the conduit takes in water.
I've now checked both the Purple/Black and Orange/Black wire and both are good from the Connector to the White Connector Block in the Boot.
2008 Land Rover LR3 SE 4.4L
2010 Jaguar XF 4.2L
2019 No Boundaries 16.5 Off Road Trailer (Caravan)
5th Oct 2018 4:26 pm
Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1783
have you pulled the connector to see it pins are corroded as it looks rusty in there
5th Oct 2018 11:44 pm
biztechrx
Member Since: 22 Sep 2018
Location: Hershey, PA
Posts: 56
No I did not pull the connector.
May be worth a try?
Thank you!2008 Land Rover LR3 SE 4.4L
2010 Jaguar XF 4.2L
2019 No Boundaries 16.5 Off Road Trailer (Caravan)
6th Oct 2018 12:21 am
biztechrx
Member Since: 22 Sep 2018
Location: Hershey, PA
Posts: 56
Globetrotter448 wrote:
have you pulled the connector to see it pins are corroded as it looks rusty in there
Pins look fine?
2008 Land Rover LR3 SE 4.4L
2010 Jaguar XF 4.2L
2019 No Boundaries 16.5 Off Road Trailer (Caravan)
7th Oct 2018 3:27 am
biztechrx
Member Since: 22 Sep 2018
Location: Hershey, PA
Posts: 56
Today I checked the Black/Orange and Black/Purple wires for Continuity from the Rear Valve Block all the way to the EAS ECU on the side pillar near the hood release handle.
B/O Wire Good Tone
B/P Wire No Tone
This FAULT (C1A34) may come down to a simple wire splice?
2008 Land Rover LR3 SE 4.4L
2010 Jaguar XF 4.2L
2019 No Boundaries 16.5 Off Road Trailer (Caravan)
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