Just wondering where the ECM on a 2003 is located, so that I could get the part # off of mine.

-Jesse

 

What is ECM?

 

I believe he means ECU (Electronic Control Unit). It is the main computer that controls the engine and electronics in the car. I believe its under the passenger side kick panel?

 

The part number is not on the ECM. I took my ECM out when the hestitation TSB was issued and there is nothing on it except for a serial number. You have to use a Consult II to pull down the part number. The dealer showed me how this is done when I brought the car in for the TSB.

 

The FSm says that it is located "behind the instrument lower cover." You might be able to see it if you remove the glove box.

 

The ECU is located on the floor directly behind the radio. You do NOT need to remove any glove box, dash, or vents to access it. There is a black plastic cover with 2 round plastic snaps that cover the ECU. From the driver's side, the cover is directly beside the gas pedal. Pull on the cover to remove it, and there is the ECU. The ECU has (4) 8mm screws that hold it to the mounting bracket. Then it slides out towards the passenger's side.

As for the part number, you need the Consult-II to get it. But you also need a code that is written on top of the ECU if you are looking for a junkyard spare. You can see this code from the passenger's side without removing the ECU from the mounting bracket (You will need a flashlight). The number should be A56-***-** or something like that.

 

no he means ECM (electronic control module). been in business 63 yrs never heard it call unit

 

Very right. You don't need Consult to get the part number however. Post your VIN here to get it:https://www.nissanpartsdeal.com/part...html?PNC=22611
That's if you want a new one. But if you must go to the junkyard or ebay then the number on the ECM is preferably used to match up. The older version could have this:3N A56-T64 ZP5; the updated version is:3M A56-U83 E43.
The number ends with for digits, i.e., 2419. It refers to the actual date of production of the car, and in this example means 19 April 2002 or 2Y26, 26 November 2002.

 

ECU, ECM, PCM are all interchangable.

 

Fun fact: you hadnt been in business for even 50 years when he made that post

 

It's always fun trying to answer a 14 year old thread.

 

- And I've owned a few cars since that comment was posted!!!