My radio and clock display have stopped working. By the throttle pedal is the fuses, I have checked fuse number 2 brown 5A radio which is ok, also fuse number 27 red 10A (navigation display, radio, phone, navigation module, traffic master) is too close to the accelerator pedal for removing, but there is no sign of any heat related in the fuse box, so my question is, is there a remote relay/ switching unit that supplies my radio? Any suggestions appreciated.

 

Welcome to the forums Wiff2110,

I've moved your question from General Tech Help to S-Type forum. Members here with the same model will be able to help.

Please read the guidance for new members ( https://www.jaguarforums.com/forum/n...ned-up-241802/ ) which answers many of the most frequent questions about getting started.

Graham

 

Welcome to the forum.

One more fuse for you to check. Look at #18 in the same fuse panel (primary junction box).

For fuse #27, if you push down on the throttle pedal, would that give you room to remove the fuse for inspection?

Wiring diagrams are here:

JagRepair.com - Jaguar Repair Information Resource


See figure 15.1 (Standard Audio) or figure 15.2 (Premium Audio).

To the left of the steering column, you'll see a control dial for the instrument panel brightness. Make sure that is not turned down all the way. Here's an image shamelessly stolen from eBay:



At the wiring diagram, look at figure 09.2 for the dimmer controlled lighting. The dimmer switch is at the bottom left. Are all the other items on that page illuminating correctly?

Does the radio work okay otherwise? If you leave it switched on, does it turn on and off automatically with the ignition key? Does it keep the time and station settings? If the only issue is the digital display on the face of the radio does not illuminate, that sounds like an internal failure in the radio head unit. Your best bet may be to find a comparable used unit on eBay or elsewhere.

 

Driving yesterday the radio and clock display appeared briefly going on and off, the clock was showing an incorrect time and the radio played the selected station. Then the radio would go blank followed by the clock, this carried on for my 2 hours of driving, going off and returning on with no set pattern or times. When I stopped and turned off the ignition as normal they would go off. Selecting the ignition back on and fault same as, no radio and no clock.
So with this intermittent operation I guess the fuses are all ok and I’m back to my original question, is there a common relay that may be causing this intermittent operation?
Thank you for your interest, and also “kr98664” who has sent me some help.
I would still like some more help to rectify my problem.

 

Did the radio continue to produce sound while the display malfunctioned, or did the audio output come on and off intermittently in keeping with the display?

 

The radio audio came on and went off as did the clock display, both working and not working in harmony, so yes working intermittently, and no set times, it comes and goes as it pleases , which is why I’m thinking a common relay is playing up. Hope you are able to point me in the right direction. Thank you for your interest.

 

Have you checked the power connections on the back of the radio unit itself? This could be as simple as an improperly seated plug-in connector...

 

"Ah, I see!" said the blind man. I had misunderstood your original post. I thought you were saying the display (for the radio and clock) was cutting out, but everything else (including the audio) was fine. This is not to be construed as me being the W word, but merely less correct than usual.

Back to your question about a relay at fault. Sorry, no relays in the power supply. It has constant battery power for the memory and clock functions. It has a switched power signal to turn the radio on and off, via the ignition switch.

Look at the wiring diagrams previously linked. Go to figure 01.4 for details of the ignition switch, shown at the left of the page. The switch assembly is basically four separate switches (poles) in a common housing. If the pole feeding the radio was intermittent, it could cause your symptoms.

Two wires feed battery power from the left into the switch. Four wires shown at the right of the switch direct that battery power to different circuits.

Look at the bottom of those four wires to the right of the switch, labeled Y. This wire Y sends power to a group of fuses in the primary junction box. These fuses are grouped at the bottom of the diagram. Fuse #27 feeds the circuit signalling the radio to turn on or off.

If the corresponding pole of the ignition switch was cutting out, you'd lose power to all fuses in that group. This makes troubleshooting easier. Fuse #26 feeds the windshield washer pump. (The wipers are on a completely different circuit) Make sure the windshield washer sprays fluid when commanded. Next time the radio cuts out, try the windshield washer again. If it fails at the same time as the radio, you've got a problem in their common power supply, most likely the ignition switch.

If the windshield washer works even when the radio doesn't, you've got a fault specific to the radio circuit. This could be a loose plug, loose fuse, failing radio, etc.

 

Would that be a common plug connector feeding clock display and radio? I’m tempted not to think that as a cause as I’ve owned my 2001 s type sport for 20 years and it’s never been mistreated or in an accident. I’m still inclined to think more of a common relay, but just where would that be? Thank you for your interest.

 

Something is getting lost in translation, even though we both speak English.

Does your car have a separate display for the clock? On my ‘02, the time is displayed on the face of the stock radio. If I change stations or adjust the volume, that info is displayed briefly and then it goes back to the clock.

You’re welcome to dig through the wiring diagrams in search of a relay. I did not find any relays in the constant or switched power circuits to the radio.

Try the windshield washer when the radio cuts out. Can’t get any simpler than that for troubleshooting.