Question about 1994 Nissan Pathfinder
I have a 1994 Nissan pathfinder SE. it misses pretty bad like it is gonna die until it warms up mostly. a local Mechanic has had it all day and tried to pull codes. and was unsuccessful. apparently the 1994 was before the O.B.D. 1 system and will not hook up. Is there a way to pull codes without the machine or taking it to a dealership?
You can retrieve the trouble codes from your '94 Nissan Pathfinder right from your home garage, saving yourself both time and money. 1994 Nissan Pathfinders come equipped with an on-board diagnostics 1 computer (OBD 1) that retrieves and stores all trouble codes sent to it from various sensors. When these sensors detect a problem, they send the code to the computer. The computer illuminates service and/or warning lights on the instrument cluster. You can retrieve these codes using a handheld device called an OBD I code reader. This can be purchased online or at any auto parts retailer.(I have OBD-2 and bought a V-checker brand reader, don't know if they sell an OBD-1 reader or not. Alternatively...
The Quick Paper Clip Test
It should be mentioned that a quick method to see which trouble code or codes are being set in your cars ECM is to jumper the A and B pins of the 12 pin ALDL (assembly line data link) OBD1 connector with a paper clip. While the car is off, sitting still, turn the ignition key forward while this jumper is in place. Do not start the car. The Service Engine Soon ( SES ) light will flash in a repeating sequence, telling which trouble codes have been set in the ECM. A service manual for your year car will have a chart outlining what each trouble code stands for, or this Trouble Code website can be of help. Some vehicles have an OBD2 style 16 pin connector but still have OBD1 behind them. Disclaimer: I don't know if this will work on your vehicle and you will be proceeding at your own risk. I'm not responsible for any work you do or have done to your vehicle.
Posted on Jan 02, 2012
Yes. you must read the codes from the flashing red and green lights on your ECU which is beneath your passenger seat. Rather than go into the gory details on how to do this, please refer to the instructions located at the following link. http://npora.ipbhost.com//index.php?showtopic=21
Posted on Aug 21, 2009
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Posted on Jan 02, 2017
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The engine and transmission in this cars drive train are fully electronically controlled by a computer called the PCM (Power Train Control Module). Whenever a problem like this occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL THE DIAGNOSIS & TESTING IS COMPLETED.
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