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The Nissan Altima is a mid-size automobile manufactured by Nissan, and is arguably a continuation of the Nissan Bluebird line, which began in 1957.

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Where is the fuel pump relay at

Where is the fuel pump relay at on 2003 altima 2.5.I don't know where it is located at.I have checked everywhere.I see that it says it is built into ipdm e/r. Where that

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Where is located at on a 05 altima 3.5

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Hi @rudyg ,

Here is a link to the 2003 Altima POWER SUPPLY, GROUND & CIRCUIT ELEMENTS, wiring Diagram — POWER — 5, bATTERY POWER SUPPLY — IGNITION SW, iGNITION POWER SUPPLY — IGNITION SW, sYSTEMS CONTROLLED BY IPDM E/R 14. section from the service manual. (click on the blue download button on the page).

On PG-24 you will find the a diagram showing the location of the relay in the IPDM E/R

Here is an image which shows the location of the fuel pump relay in a 2003 Altima 2.5L (which is controlled by the IPDM E/R).

Also check Fuse #32 (this is the fuse for the pump (I think, I may be wrong about this though)

Block Image

(click on image to enlarge for better viewing)

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Hi @ Jared Carlson

Here is a link to the 2005 Nissan Altima - Power Supply, Ground & Circuit Elements (Section PG) section of the service manual.

On PG-24 you will find the a diagram showing the relay location in the IPDM E/R

Here is an image which shows the location of the fuel pump relay.

Block Image

(click om image to enlarge for better viewing)

Also check Fuse #50 (this is the fuse for the pump)

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The 2003 Altima fuel  pump is beneath the back window.  There are two locking mechanisms under the  front of the seat to gain entry.  Pull the two lock rings to the front of  the car to free the seat from the door.  Remove the bottom seat cushion that gives you  access to the cover plate of the fuel pump.  The plate is on the  driver's side and it's flat.  There are four 1/4 turn plastic  phillip head locks on the cover.  Remove the 4 keys, raise the cover  and disconnect the electrical connection from the pump.  Disconnect the fuel line that will  have the residual pressure in the tank. Squeeze the connector lock that is normally white or black, and pull  the fuel line to the front of the car with a twisting motion.  Oil is flowing out, so have something under the vehicle or fuel line to capture or remove the fuel.  The pump is protected by a  threaded black ring in the tank. Remove the ring by turning  it clockwise until it is removed.  Then take the  fuel pump halfway up. There is now some interference from the two wires attached to the bottom of the pump and the fuel gauge sending the float unit. You will have to tilt the pump and maneuver it until you clear the float and wiring. Cautions: No smoking, do not bend or distort the sending unit float arm, the fuel line is under pressure, note the location of the pump assembly O ring seal, assembly is the reverse of disassembly, and the entire assembly is replaced, and not just the pump like other vehicles. The pump assembly has the filter/sock incorporated with the unit, and it is the only filter in the entire fuel system.


For more information you can visit Car manual’s Auto Blogs


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