Cooling fans operation
#1
Cooling fans operation
2000 jaguar xjr 58,000 miles original owner thank you 😂. What is the best procedure for checking that the cooling fans work properly. Is the fan suppose to run for a bit after you shutdown the engine. Thanks for all your advice. On my 2006 xkr the fan does run after shutdown for a bit.
#2
The 2000 XJR operates in similar ways to the X300
Both X308 and X300 use a large fan control relay located under the car just fwd of the left front wheel
They are different part numbers and are different and won't work on each other . The X300 is white in color and the X308 is black
If mounted upside down water can get into it ruining it beyond relay repair
The Fans Control Relay is commanded by the Engine ECU which has a 2nd mode A / C load component by a pressure switch
The white wire from the ECU enables one fan ( left ) operation . The white / blue wire enables both fan operation
to test the both fans operation on the coolent tempature mode of operation you would remove the coolant temp sensor connector and put a paper clip in the connector
This is a low current circuit and mimics the coolant going high temp so you will get both fans showing the fan control relay is working properly
Editing
Both X308 and X300 use a large fan control relay located under the car just fwd of the left front wheel
They are different part numbers and are different and won't work on each other . The X300 is white in color and the X308 is black
If mounted upside down water can get into it ruining it beyond relay repair
The Fans Control Relay is commanded by the Engine ECU which has a 2nd mode A / C load component by a pressure switch
The white wire from the ECU enables one fan ( left ) operation . The white / blue wire enables both fan operation
to test the both fans operation on the coolent tempature mode of operation you would remove the coolant temp sensor connector and put a paper clip in the connector
This is a low current circuit and mimics the coolant going high temp so you will get both fans showing the fan control relay is working properly
Editing
Last edited by Parker 2; 04-08-2021 at 06:30 PM.
The following users liked this post:
BadenXJR (05-27-2021)
#4
If one fan is faulty (open circuit), the other good fan will not run either at Low speed but it will run at full speed.
The fans will run for some time after engine switch-off if they were at High speed at the time.
Last edited by M. Stojanovic; 04-08-2021 at 10:19 PM.
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