POWER SEATS DO NOT WORK

Hi,

I would start by checking the fuse in the power distribution box under the hood. See pic 1 for which fuse to check.

Next, if the fuse is good and there is power in and out, check for power to the switch itself. If there is power and they still don't work, you may have a faulty ground. See pic 2 for ground location.

Here are a few links you may find helpful when testing:


https://www.2carpros.com/articles/how-a-car-fuse-works

https://www.2carpros.com/articles/how-to-check-a-car-fuse

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

Let me know what you find or if you have other questions.

Take care,
Joe

Somehow the passenger worked, fuse okay, couldn't find a ground under driver seat. how do i remove the switch to test it?

If I recall, the switch is clipped into the plastic molding on the side of the switch. Take a look at pic 1 and let me know if it helps.

Joe

No this switch is on the too right, pretty much part of the top of the seat, as most Nissan's are, not pike the pic.

What color wire at the switch should have power?

Also there is battery voltage at the main harness going to the module under the seat, but at the switch once i opened it it only gives -2.6v, in minus.

If the voltage is negative, make sure you don't have the polarity reversed. As far as the power supply, it comes through both a fusible link and a circuit breaker. The wire is white but splices to red before going into the control. Also, the ground between the two seats is spliced and ground is located under the driver's seat, attached to the floor.

See the attached pics. It shows the wiring schematic for both front seats.

Let me know if this helps you.

Joe

I will check these wires and supply again thanks. How can I have the polarity reversed?

If you are using a digital multi-meter, you could have the supply and ground backwards. When the power flows through the meter backwards, it will read negative. It's not hard to have happen.

Let me know and I hope this is helping.

Take care,
Joe

But i used a test light.

How are you getting a voltage reading from a test light?

Joe

I have a test light that comes with a display that shows voltage.it is one of those circuit testers with LCD.

I don't have one of those, but it sounds like I need one. LOL However, for you to show a negative voltage, power has to be traveling in a reverse manner or there is a draw pulling power the wrong way.

Turned out both the module under the seat and the switch were bad, got them installed and all good thanks !

Great! Glad it's fixed. Something was back feeding power through your gauge. That is the only way I can think of to get a negative reading. Regardless, I'm glad it's fixed.

Now, I was on the Snap on truck today and they don't have a light like yours, so I have to ask where you got it. LOL

Joe

Thanks!! I like that and feel it is something I need. LOL

Take care and have a good weekend.

Joe