Convertible top problem
#1
Convertible top problem
Hi All,
New here abd tried searching but did not find any info. Suddenly, the top on my 1994 xjs 12cyl no longer operates. There is power at the fuse. But no power at the motor. Does anyone know if its one of those relays I see back there?
Any help would be hugely appreciated!
Many thanks.
New here abd tried searching but did not find any info. Suddenly, the top on my 1994 xjs 12cyl no longer operates. There is power at the fuse. But no power at the motor. Does anyone know if its one of those relays I see back there?
Any help would be hugely appreciated!
Many thanks.
#2
#4
It uses hydraulic fluid, the spec is for Univis J13.
One other thing to check, there is a switch on the motor/pump body that controls electric or manual operation of the hood. Make sure the arrow is pointing to electric.
Also, and I'm sure you already know this but you do have your handbrake on and the brake light on the dash is lit right?
Cheers,
Allan
One other thing to check, there is a switch on the motor/pump body that controls electric or manual operation of the hood. Make sure the arrow is pointing to electric.
Also, and I'm sure you already know this but you do have your handbrake on and the brake light on the dash is lit right?
Cheers,
Allan
The following users liked this post:
Schoemann (08-06-2021)
#5
#6
Getting stranger
Hi,
Thanks for all the feedback so far.
So, I am in park with the hand brake up and I removed the relays and used a test lamp to check things out. Seems like there is power to the relays but when the switch depressed there is no power to the motor. I jumped a relay and heard some faint sounds from the motor but no movement. Also, with the motor disconnected there is a slight dimming on the lights (interior and exterior) when the to switch is depressed. I think this means that there is an electrical load onto something. Could the parking brake be the culprit?
Thanks as always.
Ed
Thanks for all the feedback so far.
So, I am in park with the hand brake up and I removed the relays and used a test lamp to check things out. Seems like there is power to the relays but when the switch depressed there is no power to the motor. I jumped a relay and heard some faint sounds from the motor but no movement. Also, with the motor disconnected there is a slight dimming on the lights (interior and exterior) when the to switch is depressed. I think this means that there is an electrical load onto something. Could the parking brake be the culprit?
Thanks as always.
Ed
#7
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#8
#9
One final thought, have you checked that the hydraulic fluid in the pump/motor is topped up?
If you haven't already you might want to download the electrical guide for the car, just go to the "how to" link at the top of this forum and click on electrical diagrams.
Cheers,
Allan
The following 2 users liked this post by AllanG:
sthames42 (07-15-2013),
tomtomterrific (08-06-2017)
#10
Hi,
Thanks for all the feedback so far.
So, I am in park with the hand brake up and I removed the relays and used a test lamp to check things out. Seems like there is power to the relays but when the switch depressed there is no power to the motor. I jumped a relay and heard some faint sounds from the motor but no movement. Also, with the motor disconnected there is a slight dimming on the lights (interior and exterior) when the to switch is depressed. I think this means that there is an electrical load onto something. Could the parking brake be the culprit?
Thanks as always.
Ed
Thanks for all the feedback so far.
So, I am in park with the hand brake up and I removed the relays and used a test lamp to check things out. Seems like there is power to the relays but when the switch depressed there is no power to the motor. I jumped a relay and heard some faint sounds from the motor but no movement. Also, with the motor disconnected there is a slight dimming on the lights (interior and exterior) when the to switch is depressed. I think this means that there is an electrical load onto something. Could the parking brake be the culprit?
Thanks as always.
Ed
In regard to the handbrake, does the instrument panel bulb come on when you engage the handbrake?
Cheers,
Allan
#11
#12
Ed,
You also should have 12v on pin 87. Just to be sure, did you jump pins 30 and 87 on the relay base? If you have 12v on pin 87 and jumping didn't work then the problem could be:
A) In the wiring from the relay to the motor. Check the little 2 wire spade connectors by the motor. Check earth connections are clean and secure.
B)The motor/pump is faulty.
Cheers,
Allan
You also should have 12v on pin 87. Just to be sure, did you jump pins 30 and 87 on the relay base? If you have 12v on pin 87 and jumping didn't work then the problem could be:
A) In the wiring from the relay to the motor. Check the little 2 wire spade connectors by the motor. Check earth connections are clean and secure.
B)The motor/pump is faulty.
Cheers,
Allan
#15
If the rear windows go up then your switch in the console is good. My first inclination would be to check the "Top Up" relay. First you could swap it with the "Top Down" one and see if that alters things. Then check the relay base to make sure you have 12v on pin 86. Also check pin 85 to see if it changes state when the switch is pressed. If all that fails then check pin 3 of the control module to see if it changes state when the switch is pressed. If it does then the problem is in the wiring between the module and the relay. If it doesn't you might have a bad module. Unplug it and clean the contacts and see if that helps.
One final thought, have you checked that the hydraulic fluid in the pump/motor is topped up?
If you haven't already you might want to download the electrical guide for the car, just go to the "how to" link at the top of this forum and click on electrical diagrams.
Cheers,
Allan
One final thought, have you checked that the hydraulic fluid in the pump/motor is topped up?
If you haven't already you might want to download the electrical guide for the car, just go to the "how to" link at the top of this forum and click on electrical diagrams.
Cheers,
Allan
I will look try your suggestions at my next opportunity.
I'm having another issue, as well. If you could look at it, that would be great.
#16
#17
Your problem definitely sounds electrical. Can't recommend highly enough to download the electrical guide posted above. Don't try to diagnose electronics without it.
Otherwise, follow Allan's suggestions. His advice is excellent.
#18
Quite a lot of devices in play just to raise and lower a roof and raise and lower quarter panel windows. I simply refused to put up with all that so I unplugged the roof module and ran wires from the console switches to the relays. I can now operate the roof and windows whenever I wish. No park brake needs to be on or shift lever in park or brake to be pressed. And best of all no little electronic gadget will fail at the most inconvenient time such as when it starts to rain and the roof is down.
Cheers, RagJag
Cheers, RagJag
The following users liked this post:
Schoemann (08-06-2021)
#19