2006 XJR - where is the fuse for the intercooler pump?I'm seeing 0V at the pump with ignition on.

And where can I get electrical wiring diagrams for my year? the closest I've seen online is 2004 and they are not the same.

Thanks

 

Have you tried fuse 24?

 

Thanks for that. The fuse is good but reads 0V on the hot side with fuse pulled and ignition on. Since your info is different than mine any idea what relay controls that line?

Cheers

 

Found the inter-cooler relay but it's one of the internal, non serviceable ones in the fuse box. Before I buy another fuse box are there ANY other reasons why I would not get battery voltage on the hot side of the fuse? I tested with fuse out, ignition on with meter from hot to ground.

Any ideas please jump in. The car is dead until I fix this. Driving while in restricted mode caused misfires on every cylinder.

 

<Looks like you found the relay>

 

Well, It's more like a deduction since I can't actually get to the relay.It's soldered onto the board and under the fuses. If, indeed, that's the right one. It's worrisome that a relay would go bad and I hate to throw 250 us$ at a guess. Have you ever heard of one of these failing? the Jag's only got about 80,000 miles.

 

I got my Electrical Guides from here:

Jaguar XJ8 XJR X350 Electrical Guides

Attached is a snapshot of the "Intercooler Relay":

 

Thanks for the pic and the place to get it.

Yep, that's the guy but he's not a plug-in relay. It's a small one on the board itself. Before I get a new board I'm trying to find a way to verify that the relay is at fault. I know there's no voltage at the fuse (F24). I can't get to the relay so the best I can do is check at the harness connector going into the box. Any other suggestions are welcome!

 

i just bought a 2009 jaguar xf supercharge and the guy who i got it from says hes son took out the ecm relay and hes not sure were it goes for sure but i need help finding out which is the right one and where it goes

 

Wish I could help but, sadly, that car is long gone. Sorry.

 

Hi Raschwar,
I have had this fault on my car.
Firstly, to confirm the faulty relay in the front distribution box, you can wire in an external relay to energise the supercharger coolant pump. Any 12v relay will work.
The pic shows what I did. Fuse F14 feeds that relay. Take out the fuse and construct with male and female spade terminals, a remote mounting for F14. Add a wire to the live side of the remote F14 and connect it to the coil connection of your remote relay. From the remote relay other coil connection, wire it to an earth on the chassis.
Connect the input (common) terminal of the relay to the power resistor at the back of the distribution box. This provides 12v for the pump. From the external relay normally open connector, take a wire, with a fuse in-line and use a male spade connector to connect to the out side of F24.
This bypasses the faulty relay inside the junction box and gets the pump working again.
On the pic, ignore the red wire running along the bottom of the distribution box, that was one of the po's attempted fixes that was wrong.

I ran this setup for a few months to test it, then was able to replace the relay on the pcb.
Get back to me when you are ready to do that, I've got all the details.

Pete M