ATC Fault code 14 and no heater...

smudge · 1st April 2015, 18:51

Checked the fault codes list ; heater coolant temperature sensor Open or short circuit 70 C (150F)

Is this the coolant temp sensor under the bonnet or is it a specific one for the ATC?

smudge · 1st April 2015, 19:21

Ok. It's just for the heater. Part number JWL100040 and is a Denso 170400-4380.

Anyone know its exact location (somewhere under the dash....but where?) ?

klarzy · 1st April 2015, 19:22

Quote:

Originally Posted by smudge

Ok. It's just for the heater. Part number JWL100040 and is a Denso 170400-4380.

Anyone know its exact location (somewhere under the dash....but where?) ?

just to the left of the steering wheel, looks like a set of coin holders...

SD1too · 1st April 2015, 19:26

It's specific to the ATC Simon. The thermistor is mounted on the heater matrix, on the passenger side, according to RAVE.

Simon

SD1too · 1st April 2015, 19:28

Quote:

Originally Posted by klarzy-dials.com

just to the left of the steering wheel, looks like a set of coin holders...

No Peter, that's feedback of the cabin air temperature to the ATC ECU.

Simon

smudge · 1st April 2015, 19:46

Quote:

Originally Posted by SD1too

It's specific to the ATC Simon. The thermistor is mounted on the heater matrix, on the passenger side, according to RAVE.

Simon

Great.Thanks. I'll have a look tomorrow. Hopefully it's just a dodgy connection or someone has accidently unplugged it. :-) Would be nice to have some heat...got cold here again. :-(

smudge · 2nd April 2015, 12:39

Right. Just removed the heater thermister and it's giving infinite resistance ( my multimeter's lowest setting is 200 ohm). So I take it that the thermister is kaput. I'll try and get another one and hopefully get the heater working again,

smudge · 3rd April 2015, 20:06

In the mean time in order to have some heat, I removed the heater flap motor and used a 12v battery to set the flap motor fully open, then refitted it with the wiring plug disconnected. Hey presto....heat 'till I can get a new thermistor ! :-)

SD1too · 3rd April 2015, 20:13

Thanks for the updates Simon. It sounds as if you've got this one cracked.

Simon

smudge · 16th May 2015, 18:34

Yey. Just won a brand new still in packet Rover thermistor on ebay. 0.99p plus p+p !

1st April 2015, 18:51	#1
smudge Regular poster MG ZT Join Date: Mar 2015 Location: Roscommon Posts: 67 Thanks: 9 Thanked 1 Time in 1 Post	ATC Fault code 14 and no heater... Checked the fault codes list ; heater coolant temperature sensor Open or short circuit 70 C (150F) Is this the coolant temp sensor under the bonnet or is it a specific one for the ATC?

1st April 2015, 19:26	#4
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,517 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	It's specific to the ATC Simon. The thermistor is mounted on the heater matrix, on the passenger side, according to RAVE. Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.

3rd April 2015, 20:06	#8
smudge Regular poster MG ZT Join Date: Mar 2015 Location: Roscommon Posts: 67 Thanks: 9 Thanked 1 Time in 1 Post	In the mean time in order to have some heat, I removed the heater flap motor and used a 12v battery to set the flap motor fully open, then refitted it with the wiring plug disconnected. Hey presto....heat 'till I can get a new thermistor ! :-) Last edited by smudge; 3rd April 2015 at 20:24..

3rd April 2015, 20:13	#9
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,517 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	Thanks for the updates Simon. It sounds as if you've got this one cracked. Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.

16th May 2015, 18:34	#10
smudge Regular poster MG ZT Join Date: Mar 2015 Location: Roscommon Posts: 67 Thanks: 9 Thanked 1 Time in 1 Post	Yey. Just won a brand new still in packet Rover thermistor on ebay. 0.99p plus p+p ! __________________ [SIGPIC][/SIGPIC]

1st April 2015, 19:21	#2
smudge Regular poster MG ZT Join Date: Mar 2015 Location: Roscommon Posts: 67 Thanks: 9 Thanked 1 Time in 1 Post	Ok. It's just for the heater. Part number JWL100040 and is a Denso 170400-4380. Anyone know its exact location (somewhere under the dash....but where?) ?

2nd April 2015, 12:39	#7
smudge Regular poster MG ZT Join Date: Mar 2015 Location: Roscommon Posts: 67 Thanks: 9 Thanked 1 Time in 1 Post	Right. Just removed the heater thermister and it's giving infinite resistance ( my multimeter's lowest setting is 200 ohm). So I take it that the thermister is kaput. I'll try and get another one and hopefully get the heater working again,