Ambient Temperature Sensor

Frogmella · 13th May 2020, 19:00

My Temp sensor was reporting -30 degrees although it would start ticking up a degree at a time as I drove along, never getting to the right temp and returning to -30 when I switched the ignition off. Computer reset did nothing.

So I replaced my sensor with a new one from DMGRS, but still get -30 degrees, with no changes. I have run program 21 to reset the computer but again,without any improvement.

I am sure it is properly connected behind the bumper (its hard not to connect it properly). It took me ages to get the bumper back on, I really don't want to take it off again if I can avoid it.

There doesn't appear to be a fuse for it.

Does anyone have any ideas about what I might check next?

Thanks in advance.

trikey · 13th May 2020, 19:11

Have a look at the wiring loom, you may have a break somewhere.

allywh · 13th May 2020, 21:40

Possibly corroded pins in the electrical connector.

Frogmella · 25th May 2020, 14:54

Quote:

Originally Posted by allywh

Possibly corroded pins in the electrical connector.

Turned out to be the pins on the main bumper multi-connector. Cleaned them up and it worked straight away. Sadly, because its been "broken" for months, now my air-con needs regassing.

I'm quite NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD- off that I didn't realise that the problem started months ago after I first took the bumper off and disconnected the main wiring plug. If the penny had dropped I could probably have just cleaned it up back then. Stupid of me.

Now I have to find out why only one of my reversing lights works.

13th May 2020, 19:00	#1
Frogmella Loves to post 2003 (03) Pre-Facelift 1.8 Club SE Auto Petrol Non Turbo Saloon Join Date: Oct 2015 Location: Towcester, Northants Posts: 270 Thanks: 30 Thanked 31 Times in 26 Posts	Ambient Temperature Sensor My Temp sensor was reporting -30 degrees although it would start ticking up a degree at a time as I drove along, never getting to the right temp and returning to -30 when I switched the ignition off. Computer reset did nothing. So I replaced my sensor with a new one from DMGRS, but still get -30 degrees, with no changes. I have run program 21 to reset the computer but again,without any improvement. I am sure it is properly connected behind the bumper (its hard not to connect it properly). It took me ages to get the bumper back on, I really don't want to take it off again if I can avoid it. There doesn't appear to be a fuse for it. Does anyone have any ideas about what I might check next? Thanks in advance.

13th May 2020, 19:11	#2
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,763 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	Have a look at the wiring loom, you may have a break somewhere. __________________ Lest we forget..

13th May 2020, 21:40	#3
allywh Newbie rover 75 tourer Join Date: Aug 2014 Location: Livingston Posts: 13 Thanks: 0 Thanked 1 Time in 1 Post	Possibly corroded pins in the electrical connector.