Member Since: 04 Feb 2015
Location: Essex
Posts: 13
Where abouts is the compressor fuse . I have checked fuse 51 in the passenger footwell and all is ok .
16th Aug 2015 7:13 am
Allan_T
Member Since: 10 Sep 2012
Location: Northampton
Posts: 1034
There is no fuse for the compressor. Battery junction box fuses 12E, 17E and Central junction box fuse 51P supply the Automatic Temperature Control Module and front blower motor.GAP IID Pro Multi Vehicle Defender L316 2007-2015 - Discovery 3 - Discovery 4 - Discovery Sport L550 - Freelander 2 - Range Rover Evoque L538 - Range Rover L322 - Range Rover L405 - Range Rover Sport L320 - Range Rover Sport L494 Electrical Fault Diagnostics
16th Aug 2015 10:32 am
dlw
Member Since: 03 Dec 2014
Location: Wellingborough
Posts: 374
Which one does the temperature control, I think may that is why my wing mirrors are getting hot in 20°c outside temp and AC not working.
16th Aug 2015 12:19 pm
Allan_T
Member Since: 10 Sep 2012
Location: Northampton
Posts: 1034
The ATCM controls the relay for the heated washer jets/door mirrors, the control circuit is ground side switched. Fuse 16E in the battery junction box supplies both door mirror heaters. The ATCM could be commanding the relay to close based on the input it's receiving from another sensor or the relay contacts could potentially be stuck in the closed position, live data from the ATCM would help with the diagnosis.GAP IID Pro Multi Vehicle Defender L316 2007-2015 - Discovery 3 - Discovery 4 - Discovery Sport L550 - Freelander 2 - Range Rover Evoque L538 - Range Rover L322 - Range Rover L405 - Range Rover Sport L320 - Range Rover Sport L494 Electrical Fault Diagnostics
16th Aug 2015 12:56 pm
dlw
Member Since: 03 Dec 2014
Location: Wellingborough
Posts: 374
Hi Allan,
Thanks for that, I see you are in Northampton would you be able to do a plug in next weekend? I am in Africa until friday and my delphi doesn't seem to do live data.
16th Aug 2015 1:07 pm
Allan_T
Member Since: 10 Sep 2012
Location: Northampton
Posts: 1034
@dlw
PM sentGAP IID Pro Multi Vehicle Defender L316 2007-2015 - Discovery 3 - Discovery 4 - Discovery Sport L550 - Freelander 2 - Range Rover Evoque L538 - Range Rover L322 - Range Rover L405 - Range Rover Sport L320 - Range Rover Sport L494 Electrical Fault Diagnostics
16th Aug 2015 1:29 pm
dlw
Member Since: 03 Dec 2014
Location: Wellingborough
Posts: 374
PM replied
16th Aug 2015 1:33 pm
JMack
Member Since: 02 Aug 2014
Location: Edinburgh
Posts: 1517
Allan_T wrote:
A/C Compressor Control
Everyday is a schoolday!
Never knew the compressor 'ran' all the time, even when off.
16th Aug 2015 2:51 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
Google variable displacement air con compressor, interesting stuff.
To the op does your external temp display agree with the actual outside temp?
16th Aug 2015 4:27 pm
dlw
Member Since: 03 Dec 2014
Location: Wellingborough
Posts: 374
My ac is still not working and I have done a scan and saw that there had been intermittent low pressure anybody know what readings/resistance from pins on the pressure sensor should be?
Can the sensor be removed without losing gas?
Cheers
4th Sep 2015 2:03 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
I doubt you can replace sensor without a regas no matter how quick your hands are, not sure where sensor is located but if rubber sections close by maybe crimping hoses could work, but then you may genuinley have low pressure afterwards so would be no better off.
4th Sep 2015 6:31 pm
dlw
Member Since: 03 Dec 2014
Location: Wellingborough
Posts: 374
I think the sensor is next to the hot port on the ac pipes, I tried to loosened it off a little but it looked like it wouldn't stop loosing gas ,I had a similar problem with my Audi A8 and I was able to swap the sensor without loosing gas. I have a gauge to plug on the cold port and it shows that the pressure is max from when I had it refilled 5 weeks ago.
4th Sep 2015 6:41 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
Is it possible to stick a resistor in the sensor wires or maybe just joint them together to fool the ecu?
4th Sep 2015 7:45 pm
dlw
Member Since: 03 Dec 2014
Location: Wellingborough
Posts: 374
I need to know the resistance values or voltage as it looks like from the image below, I have 4k , 7k and 12k across the pins
4th Sep 2015 9:08 pm
grahamk
Member Since: 28 Feb 2010
Location: Dumgoyne
Posts: 1473
I have read that issues with the mixer flaps are becoming more and more common. These are connected to the HVAC unit rather than the a/c compressor and refrigerant system.3 Flash Indicators
Clock on Dash
GVIF & Reverse Camera
D4 Bluetooth
EGR's Blanked
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