2009 nissan altima seat won't go up and down. It goes back and forth fine.

SOURCE: 2003 nissan altima rpm goes

I have also read in the service manual that doing an idle relearn helps with RPM problems. This is the procedure below. It is complicated to do unless you have a watch or something to count the seconds with.

DESCRIPTION
“Accelerator Pedal Released Position Learning” is an operation to learn the fully released position of the accelerator
pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each time
harness connector of accelerator pedal position sensor or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch “ON” and wait at least 2 seconds.
3. Turn ignition switch “OFF” wait at least 10 seconds.
4. Turn ignition switch “ON” and wait at least 2 seconds.
5. Turn ignition switch “OFF” wait at least 10 seconds.
Throttle Valve Closed Position Learning UBS002OA
DESCRIPTION
“Throttle Valve Closed Position Learning” is an operation to learn the fully closed position of the throttle valve
by monitoring the throttle position sensor output signal. It must be performed each time harness connector of
electric throttle control actuator or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch “ON”.
3. Turn ignition switch “OFF” wait at least 10 seconds.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.
Idle Air Volume Learning UBS002OB
DESCRIPTION
“Idle Air Volume Learning” is an operation to learn the idle air volume that keeps each engine within the specific
range. It must be performed under any of the following conditions:

Each time electric throttle control actuator or ECM is replaced.

Idle speed or ignition timing is out of specification.
PREPARATION
Before performing “Idle Air Volume Learning”, make sure that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for even a moment.

Battery voltage: More than 12.9V (At idle)

Engine coolant temperature: 70 - 95ｰC (158 - 203ｰF)

PNP switch: ON

Electric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime light systems, set lighting switch to the 1st position to light
only small lamps.

Steering wheel: Neutral (Straight-ahead position)

Vehicle speed: Stopped

Phil Lovisek

• 726 Answers
• Posted on Jul 25, 2009

SOURCE: 2006 nissan altima power seat won't go back, does go forward

I was JUST working on a similar problem at work. It was a 2006 Altima SE with improper seat operation. It would ONLy go up/down on the bottom section of the seat. The recline and slide didnt work at all. It was looked at by different dealer and they couldn't fix it, so it end it up at my dealer ship. Since some of the features of the power seat are working, that means that you have power going to the switch. The switch provides ground for the whole circuit. The wires coming from the switch got chaffed and switch burned up. I installed new seat switch ($150 or so for the switch) and the whole seat bursted to life. I am pretty sure that you seat switch in NG.

SOURCE: The recline on my power seat stopped working

I just bought a 2005 Nissan Altima that had the same problem. The motor was fine. I opened the switch and found that a trace on the small circuit board was cut/missing. I soldered it on the spot and it solved the problem. You can access the switch by carefully prying off the switch buttons, then the plate. There are two screws that must be removed so that you can pull the switch assembly out of the seat.

SOURCE: 2003 nissan altima 2.5 s. theidle stay high at

look and listen for a vacuume leak

SOURCE: 2003 nissan altima left side

Faulty switch. Replace it.