hi all hope some one came help n/s window not working ,i can power window up with power prob so motor ok,if i prop switch live ok on lift and live ok on down side of switch when pressed but no earth on switch points in any pres of switch can any one tell me were are the earth points are it got power in the wright places but no negs,just as if there a bad earth

hi all hope some one came help n/s window not working ,i can power window up with power prob so motor ok,if i prop switch live ok on lift and live ok on down side of switch when pressed but no earth on switch points in any pres of switch can any one tell me were are the earth points are it got power in the wright places but no negs,just as if there a bad earth

Likely to be the window amplifier in the drivers door, common problem where the pin contacts on the board need re soldering.

 

Little black box roughly behind the handle in the door card

Likely to be the window amplifier in the drivers door, common problem where the pin contacts on the board need re soldering.

 

Little black box roughly behind the handle in the door card

thanks for your replay did try secondhand little black box today but no joy, the fault is n/s window.is the little black box just for o/s one shot window lift only {auto lift to limit}

thanks for your replay did try secondhand little black box today but no joy, the fault is n/s window.is the little black box just for o/s one shot window lift only {auto lift to limit}

You don't have the window lock button pressed in do you?

 

As for the relay module, the black box, I know on the skylines at least there's a relay for each window inside it, and it's normally dry solder joints on the pins for these relays that are the problem. As has been said above, open the box up and look for cracks in the solder under the relays, or on any soldered connection in fact, just the relays are the most prone in there. On skylines at least, I'm assuming the zed is the same since they're pretty similar throughout.

You don't have the window lock button pressed in do you?

 

As for the relay module, the black box, I know on the skylines at least there's a relay for each window inside it, and it's normally dry solder joints on the pins for these relays that are the problem. As has been said above, open the box up and look for cracks in the solder under the relays, or on any soldered connection in fact, just the relays are the most prone in there. On skylines at least, I'm assuming the zed is the same since they're pretty similar throughout.

The window amplifier controls both windows, as Stuart mentioned, check the pass lock button on the drivers window switch isnt pressed down.

 

Also to mention that as this is quite a common issue, you may be unlucky and your secondhand unit also has dry joints, they are pretty much on the board at the pin section where the plug would go.

 

Here is the thread concerning the amp fix

http://www.300zx.co.uk/forums/showthread.php?137368-Repair-window-module

Edited May 30, 201510 yr by groover

The window amplifier controls both windows, as Stuart mentioned, check the pass lock button on the drivers window switch isnt pressed down.

 

Also to mention that as this is quite a common issue, you may be unlucky and your secondhand unit also has dry joints, they are pretty much on the board at the pin section where the plug would go.

 

Here is the thread concerning the amp fix

http://www.300zx.co.uk/forums/showthread.php?137368-Repair-window-module

Edited May 30, 201510 yr by groover

The power window amp just controls driver's side window...

The power window amp just controls driver's side window...

The power window amp just controls driver's side window...

Does the passenger window work when the relay module is unplugged?

The power window amp just controls driver's side window...

Does the passenger window work when the relay module is unplugged?

I don't know, I've never tried it. However, the FSM pages show seperate circuit paths for driver and passenger

window motors. The diagnostics for the power window amp is for driver's side only.

I don't know, I've never tried it. However, the FSM pages show seperate circuit paths for driver and passenger

window motors. The diagnostics for the power window amp is for driver's side only.

All I'm thinking is if the passenger window no longer works if the module is unplugged, then it definitely passes through the unit. It may not use the relays, but could still be dry solder on any of the other connections in it. Could be down to the window lock switch too of course. ;)

All I'm thinking is if the passenger window no longer works if the module is unplugged, then it definitely passes through the unit. It may not use the relays, but could still be dry solder on any of the other connections in it. Could be down to the window lock switch too of course. ;)

thanks for your replays replaced o/s window switch and n/s switches today still no luck :thumbdown: p/w switch on o/s is on and still no luck my be secondhand parts faulty will open little black box to see if i can see bad joints:angry: still think it is a bad earth but then again no other faults on car other than that old prop with the power steering going on and off when i go over a bump or pot hole :glare:still got to sort that one out ...will report back when if ever i sort it out may help others on day ..., if anybody thinks of anything please and to thread

They are indeed switched by the earth, so you could still be right, tracing it now is your other pain in the ass lol, check the connectors behind the pass kick panel in the footwell, check for corrosion/green gunk in the pins at least check continuity from the door to there, before tracing across.

yep will do might just be a bad connector plug on n/s harness :drool:nice one will try that

Well just got time to look at n/S Window bad connector n/s kick place ps power window amp only works one shot o/s window n/s still works with box out of car ? So that clears that one up thanks for all help cheers