I have a 2000 jaguar s-type Climate control does not work correctley, When set at 66 heater is on full blast ( real Hot) Change it to low and the a/c comes on. Replaced the controler and it did not make a difference. The heater valve has been replaced. What next ?
At this point what i would do is remove the temp door controller and see if you can manualy turn the temp door closed when you get it apart smply start the car get it hot and see if it will blow cool air when you turn the shaft to cold may be inside the case door problem or could be a recalbratoin problem you could also remove temp door motor turn temp too cold and watch too see if the motor is actually turning either way hot or coldt hats were i would start you can repost and i will try to help you further Thunderboltz
Jaguar S-type 2000 fabrication year is equiped with:
1. Control system = Automatic temperature control
2. System layout = Single evaporator - dual zone
3. Refrigerant circuit type = Expansion valve
General information:
1. System control
1.1. Compressor operation controlled by refrigerant pressure sensor.
1.2. Compressor will not operate if refrigerant level is low!
1.3. System incorporates an A/C evaporator temperature sensor.
1.4. System incorporates an engine coolant heater regulator valve.
1.5. A/C control module incorporates self-diagnosis function.
1.6. The A/C control module fault memory can only be accessed and erased using diagnostic equipment connected to the Data Link Connector (DLC). See picture below:
1.7. Engine Control Module (ECM) incorporates A/C related trouble codes.
1.8. Malfunction Indicator Lamp (MIL) will iluminate if certain ECM faults are recorded.
1.9. The ECM fault memory can only be accessed and erased using diagnostic equipment connected to the Data Link Connector (DLC).
Trouble code Fault location
B1200 A/C control module - internal failure
B1251 In-car temperature sensor - open circuit
B1253 In-car temperature sensor - short to earth
B1255 Outside air temperature sensor - open circuit
B1257 Outside air temperature sensor - short to earth
B1259 A/C sunlight sensor - open circuit
B1261 A/C sunlight sensor - short to earth
B1262 A/C heater defrost flap motor - short circuit, open
circuit, short to earth
B1263 A/C heater fascia flap motor - short circuit, open
circuit, short to earth
B1264 A/C heater footwell flap motor - short circuit, open
circuit, short to earth
B1265 A/C heater air mix flap motor - short circuit, open
circuit, short to earth
B1676 Battery voltage - voltage too low / high
B1946 A/C evaporator temperature sensor - open circuit
B1947 A/C evaporator temperature sensor - short to earth
B1966 Heater output temperature sensor 2 - open circuit
B1967 Heater output temperature sensor 2 - short to earth
B2428 Heater output temperature sensor 1 - open circuit
B2429 Heater output temperature sensor 1 - short to earth
B2477 A/C control module - incorrect programming
I cant take the dash off! Does anyone know how it comes off? It seems like its holding on to the center heater and ac vents.
Hi
Thanks
for using FixYa. Try and check if the heater core is plugged. Find
the 2 coolant lines going to the heater core. They are right next to each other
with approx 3/4" hoses going to the engine. Now, warm up the engine with
the heater on max (don’t turn on the fan). Next, feel if the hoses are warm
(maybe HOT!) If they are not warm, then you most likely have a plugged core. A
back flush will resolve the issue. If your hoses are warm, turn on the fan. One
hose should go cold (or cooler than the other, actually should be about the
same temp as the air from your air vents, if there is a plug). If both hoses
are hot and stay hot, and you have no heat, then the problem is not with the
heater core but with the blend doors.
There are
electric motors that operate the "blend doors" inside the dash
directing air flow from the heater core and A/C evaporator core to the cab of
the vehicle. If you feel a drastic difference in one of the radiator hoses,
then try replacing the thermostat and see what happens. If all the heater and
radiator hoses are pretty much the same temperature I would suspect a control
problem in the dash controls or in the blend door operation. You’ll need to
remove the dash to check these.
Please do
accept the solution if the issue is resolved or else revert for further
assistance.
Thanks
Rylee
As I said: There are electric motors that operate the "blend doors" inside the dash directing air flow from the heater core and A/C evaporator core to the cab of the vehicle. If you feel a drastic difference in one of the radiator hoses, then try replacing the thermostat and see what happens. If all the heater and radiator hoses are pretty much the same temperature I would suspect a control problem in the dash controls or in the blend door operation. You’ll need to remove the dash to check these.
Please do accept the solution if the issue is resolved or else revert for further assistance.
Thanks
Rylee
very good info. thanks.
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If the heater core was blocked would I still get real hot air in the car? I think it might be some place that mixes the two temps.
The heat workes fine, too HOT. I don't think it is the thermostat. What do you think ?
The A/C workes on low setting, any other setting 65 up all you get is real Hot air. As stated before I replaced the Climate Control unit with no change. Any help !!
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