'97 XJ6 L Lumbar button
#1
'97 XJ6 L Lumbar button
I have an odd issue with the driver's side lumbar button ('97 XJ6). If I hit the button to inflate the lumbar, nothing happens. If I press it to deflate, it starts to deflate, but then stops and the motor kicks in to inflate it. The lumbar is highly inflated and I cannot deflate it.
I have an odd issue with the driver's side lumbar button ('97 XJ6). If I hit the button to inflate the lumbar, nothing happens. If I press it to deflate, it starts to deflate, but then stops and the motor kicks in to inflate it. The lumbar is highly inflated and I cannot deflate it.
(I originally posted this in the 'modern' XJ6 forum by mistake - I overlooked the year range of that forum.)
OK. Thanks. I'll try checking out the fuse and switch.
I have an odd issue with the driver's side lumbar button ('97 XJ6). If I hit the button to inflate the lumbar, nothing happens. If I press it to deflate, it starts to deflate, but then stops and the motor kicks in to inflate it. The lumbar is highly inflated and I cannot deflate it.
(I originally posted this in the 'modern' XJ6 forum by mistake - I overlooked the year range of that forum.)
OK. Thanks. I'll try checking out the fuse and switch.
Last edited by GGG; 05-10-2014 at 12:40 PM.
#2
I have an odd issue with the driver's side lumbar button ('97 XJ6). If I hit the button to inflate the lumbar, nothing happens. If I press it to deflate, it starts to deflate, but then stops and the motor kicks in to inflate it. The lumbar is highly inflated and I cannot deflate it.
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#8
I'm pretty sure the switch is OK. I took it out, cleaned, it stuck it back in and does the same thing. The deflate button starts to deflate the bag, then, a moment later, the motor kicks in and re-inflates it - mighty odd.
#9
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Thinking I might be able to help I took a peek at the diagrams. The switch has some zener diodes and transistors. So much for a quick answer from the likes of me. Transistors is electronics. My brain stops at electrics
The pump itself has a pressure switch and a solenoid valve. The latter presumably opens to deflate the bladder and the former presumably cuts off the pump motor at x-pressure. I'm inclined to say that both are working but are being commanded incorrectly....which takes us back to the switch.
I dunno.
Sorry I couldn't help
Cheers
DD
The pump itself has a pressure switch and a solenoid valve. The latter presumably opens to deflate the bladder and the former presumably cuts off the pump motor at x-pressure. I'm inclined to say that both are working but are being commanded incorrectly....which takes us back to the switch.
I dunno.
Sorry I couldn't help
Cheers
DD
#10
The pump itself has a pressure switch and a solenoid valve. The latter presumably opens to deflate the bladder and the former presumably cuts off the pump motor at x-pressure. I'm inclined to say that both are working but are being commanded incorrectly....which takes us back to the switch.
I've pressed the deflate button for a fraction of a second and it'll deflate a little. I can repeat that... deflate a tiny bit. But if I deflate 'too much' (either hold the deflate button too long or press it quickly a few times) eventually the inflate motor will kick in. Its like there's something telling it that the lumbar has to be stay between 95% and 100% capacity. Has me scratching my bald head.
#11
#12
It seems that in order to get that link to work, you might have to open it up in a new window. At the bottom of the image I've circled in red what I THINK might be the relay in question. But, I'm not quite clear on whether that is indeed the relay for the driver's lumbar. Does anyone know?
#13
I don't think that is a relay for the driver seat. It is labelled "Rear Seat Lumbar" and from looking at the wiring diagrams it appears that only the rear left seat has a relay (????). You can confirm by pulling it (if you have one) and see if the Lumbar still works.
For the front Lumbar there only appears to be +ve supply to the switch from the Seat Control module, and ground. The pump is only connected to the Lumbar switch.
I suggest you have an issue with either the switch or the pump. I'd suggest trying to connect a meter to the pump and measuring volts/amps while you cycle through the issue you have. You may be able to determine if when the inflate kicks in whether there is a change in output from the switch or whether the pump unit is actually making the decision on it's own accord. That's all I can come up with.
For the front Lumbar there only appears to be +ve supply to the switch from the Seat Control module, and ground. The pump is only connected to the Lumbar switch.
I suggest you have an issue with either the switch or the pump. I'd suggest trying to connect a meter to the pump and measuring volts/amps while you cycle through the issue you have. You may be able to determine if when the inflate kicks in whether there is a change in output from the switch or whether the pump unit is actually making the decision on it's own accord. That's all I can come up with.
#14
I don't think that is a relay for the driver seat. It is labelled "Rear Seat Lumbar" and from looking at the wiring diagrams it appears that only the rear left seat has a relay (????). You can confirm by pulling it (if you have one) and see if the Lumbar still works.
For the front Lumbar there only appears to be +ve supply to the switch from the Seat Control module, and ground. The pump is only connected to the Lumbar switch.
I suggest you have an issue with either the switch or the pump. I'd suggest trying to connect a meter to the pump and measuring volts/amps while you cycle through the issue you have. You may be able to determine if when the inflate kicks in whether there is a change in output from the switch or whether the pump unit is actually making the decision on it's own accord. That's all I can come up with.
For the front Lumbar there only appears to be +ve supply to the switch from the Seat Control module, and ground. The pump is only connected to the Lumbar switch.
I suggest you have an issue with either the switch or the pump. I'd suggest trying to connect a meter to the pump and measuring volts/amps while you cycle through the issue you have. You may be able to determine if when the inflate kicks in whether there is a change in output from the switch or whether the pump unit is actually making the decision on it's own accord. That's all I can come up with.
#15
Well, I was skeptical about it being a bad switch. I'd taken it out and cleaned it - twice. I pulled out and checked the related fuses as well. I finally bought a new seat switch on ebay (found one for less than $20) and... looks like that fixed it! So, thanks to all of you who pointed me in the right direction - the switch. That seems to have done it!
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