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Cooling fan not working, 06 S-type, 3.0, The fan is out, ran…

Cooling fan not working ...

Cooling fan not working

Mechanic's Assistant: What is the model/year of your Jaguar?

06 S-type, 3.0

Mechanic's Assistant: Are you fixing your S-Type yourself? What have you tried so far?

The fan is out, ran 12v. to the thicker gauge wires and. Nothing

Mechanic's Assistant: Have you checked all the fuses? Do you have a wiring diagram?

Yes

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Ran 12 volts direct and nada

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Customer reply replied 9 months ago
I have removed the fan. it has two large gauge wires, green/ white and a black and it also has two smaller gauge blue/ white and a green. How should I test it? Thx
Answered in 12 minutes by:
8/15/2017
Richard
Richard, Jaguar Technician
Category: Jaguar
Satisfied Customers: 15,712
Experience: 12 years at a Ford/Lincoln Mercury and Jaguar dealer as technician and shop foreman.
Verified
Sounds like the fan itself could be the problem. The fan control module is part of the fan assembly.When testing the fan you need to supply power and ground.
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White/green and brown/green shou is have power.
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Black is ground and the white/blue is signal from the ECM.
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Customer reply replied 9 months ago
I should ground the black and power which wire?
Well that is the module. Follow the wires up to the fan motor and see if we have power and ground.
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Customer reply replied 9 months ago
I have the fan out of the car.
What color are the wires on the fan motor?
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Customer reply replied 9 months ago
2 large gauge - green//white and bk, two smaller gauge-blue/white and green
unfortunately the fan and module is that one assembly so jumping power will not power it up. We would need to supply power, ground and a pulse to see if the fan operates. It wou is be easier to test this at the fan connector on the vehicle. If all powers and gro funds are there then the fan needs to be replaced.
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Customer reply replied 9 months ago
Ok. I will be at the car tomorrow about 9:30 am MST. Should I put the fan back in the car or leave it out and call you if you're avabale to run the test?
Either. Which ever is easier to access the wiring. I will post a test.
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Customer reply replied 9 months ago
Sounds good. Thx
Customer reply replied 9 months ago
Hi Richard, just about ready to run the test. Tom
Customer reply replied 9 months ago
Did you post thr test? I don't see it.
Ok. Unfortunately I am unavailable for a call at the moment but we can continue here til then.
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Go to the fan and confirm power to the heavy gauge black/green and the small white/green.
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Customer reply replied 9 months ago
Ok
White/green is power with key on.
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Make sure the heavy black wire is ground.
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Customer reply replied 9 months ago
Ok. Fan is out so I'll go to the plug
The white/blue is signal so we need a scope or Jag tool for that. We can hook a digital multimeter to see what the voltage reads with the key on, then engine running then with a/c on to confirm a change.
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Customer reply replied 9 months ago
The fan has been removed so we can't start the car
Customer reply replied 9 months ago
I have 12v at the plug.
12 on both those wires and the black is ground?
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The only other wire to check is that pulsed signal from the ECM
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That can only be done on demand with the vehicle on
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Customer reply replied 9 months ago
Ok I have 12v to both plugs.+
Customer reply replied 9 months ago
What color is the pulse wire?
White/blue
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Customer reply replied 9 months ago
Ok, I'm hooking up the hoses enough to run the engine to run pulse test.
Customer reply replied 9 months ago
Ok, I have the engine ready to run but have not yet plugged in fan motor. How should I test pulse?
Customer reply replied 9 months ago
Okay so the big plug has constant 12v with power on and off. The small plug has no voltage to white/blue with or without power. White/green on the small plug reads residual with power off, 12v with ignition on, and jumps to 14 when AC is turned on. The white/green wire on the plug on the car corresponds to a green/blue wire on the fan plug.
One lead on battery voltage and the ground lead of ypour meter to that wjite/blue
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Positive lead of your meter to battery voltage and the ground lead of your meter to the white/blue
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Customer reply replied 9 months ago
Ok, I'm not able to run the w/b wire test right now, I'll get back w you later with results. Thx
Customer reply replied 9 months ago
Hi Richard, Hav'nt had the opportunity to run that test yet. I will keep you posted. Thx
Customer reply replied 9 months ago
I'm very satisfied so far. If I rate now will doing so close out the mater?

No the post will stay open if you rate a response.

Richard
Richard, Jaguar Technician
Category: Jaguar
Satisfied Customers: 15,712
Experience: 12 years at a Ford/Lincoln Mercury and Jaguar dealer as technician and shop foreman.
Verified
Richard and 87 other Jaguar Specialists are ready to help you
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Customer reply replied 9 months ago
Hi Richard, Sorry for the delay, I had a total hip replacement 20 days ago moving slow and cannot get underneath the car right now and have to rely on my busy son who does not live with me for help. At any rate, finally ran the white/blue pulse test and it has 12v with key on, 12v with engine on and 15.8v with A/C on. No need to answer me today as I respect your day off. Thanks and enjoy your day. Tom
Customer reply replied 9 months ago
Hi Richard, Ran the pulse test as noted above and I assume by the results that it is indeed a bad fan motor. Do you agree? I wanted to be sure before I purchase a $500 fan. Thank you.
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Richard
Richard, Jaguar Technician
Category: Jaguar
Satisfied Customers: 15,712
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Experience: 12 years at a Ford/Lincoln Mercury and Jaguar dealer as technician and shop foreman.

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