Question about 1996 Jeep Grand Cherokee

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1996 ECM thank you very much. now, checking the ECM physically, i have two slots for the connectors which matches the car's cabling. when i went to search on the internet, i found out that the ECM advertised for 1996-1997-1998 models have THREE slots for the ECM connector. what have gone wrong? i am sure, these are not compatible anymore since the connectors won't match. was there any modification done to the car. i bought it used.

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  • ssebas_01 Aug 18, 2008

    thank you. i just posted some questions regarding the seller's item on eBay. the picture advertised looked like the one i removed. checking under the hood, i discovered that it was a 1995 model. i was simply Googling the wrong year, hence the discrepancy.



    nonetheless, i emailed the seller if any programming is necessary on the 95 models. just reading from the advertisers, they want the VIN for the 96-97-98 models in order to program the EPROM on the ECM. i am still awaiting answer from the seller. it costs about 89 dollars, which sounds reasonable. of course shipping would be an added cost. however, if this part is compatible with mine --- it is worth running the car again.



    after my dissertation -- alll i want say really is THANK YOU. your answers had been enlightening.

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It is possible that the three slot box is compatible. Check on your ECM for a label. Use the numbers on that label to find the correct match. You can try a used parts store or wrecking yard, as well as the internet. You may have to remove the PROM from your old ECM and place it in the new ECM. Be very careful as the PROM is sensitive to static electricity. Let me know if you have any other questions.

Posted on Aug 18, 2008

  • plastic Aug 19, 2008

    You're welcome. My pleasure.

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Error Code: DTC P1300
Description: Igniter Circuit Malfunction
Solution:
To repair the code please do the following:
1. Check spark plugs.
2. Check for open and short in harness and connector in IGF (Ignition Confirmation) signal circuit between ECM and igniter.
3. Disconnect igniter connector and check voltage between terminal IGF of ECM connector and body ground.
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5. Check voltage between terminals IGT1 - 3 of ECM connector and body ground.
6. Disconnect igniter connector and check voltage between terminals IGT1 - 3 of ECM connector and body ground.
8. Check for open and short in harness and connector between ignition switch and ignition coil, ignition coil and igniter.
9. Check and replace ignition coils with a good known one.
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  • REMOVAL & INSTALLATION
  • Print


    OPERATION

    When the term Electronic Control Module (ECM) is used in this guide it will refer to the engine control computer regardless that it may be a Vehicle Control Module (VCM), Powertrain Control Module (PCM) or Engine Control Module (ECM).
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    REMOVAL & INSTALLATION

    See Figures 1 and 2


    0900c152800a7f96.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Fig. 1: ECM mounting scheme-except 1996 models


    0900c152800a7f97.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Fig. 2: ECM mounting scheme-1996 models
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    To install:
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    2. Install the spring retainer (except 1996) and plug in the electrical connectors.
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