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DTC 93 ZJ

Discussion in 'Cherokee' started by TinyInkognegroT, Oct 9, 2019 at 6:45 PM.

  1. Oct 9, 2019 at 6:45 PM
    #1
    TinyInkognegroT

    TinyInkognegroT [OP] Well-Known Member

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    1993 Grand Cherokee Limited 5.2L AWD
    Here are the new codes...
    12 - Direct battery input to PCM was disconnected within the last 50 Key-on cycles.

    45 - Overdrive solenoid - open or shorted condition detected in overdrive solenoid circuit.

    37 - An open or shorted condition detected in the torque converter part throttle unlock solenoid control circuit. (3 speed auto RH trans. Only). Incorrect input state detected for the Park/Neutral switch. Auto. only.

    51 - A lean air/fuel mixture has been indicated by an abnormally rich correction factor. (O2 sensor)
     
  2. Oct 10, 2019 at 6:16 AM
    #2
    Awrench

    Awrench Well-Known Member

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    what do you want to know, what can we add?
     
    TinyInkognegroT [OP] likes this.
  3. Oct 10, 2019 at 7:16 AM
    #3
    TinyInkognegroT

    TinyInkognegroT [OP] Well-Known Member

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    More curious about code 37 than anything,
    Code 37 is new and I'm not understanding what it means and what to look for. Except that it does seem like my torque converter is locked or doesn't unlock at high speeds on the highway
     
  4. Oct 10, 2019 at 10:02 AM
    #4
    Awrench

    Awrench Well-Known Member

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    this is a 46RH trans - the code 37 makes sense with accompanying 45 as these are the "electrical" portion of the trans - and I suspect they have NO voltage. A fuse, elec connector, OD switch or wiring.

    Good news
    I suspect your 4th gear and TCC are inoperative At this time, as if they were functioning you would have trans issues.


    Bad news
    these old POS ZJ's are the old chrysler shop manuals, I would rather have a prostate exam than look for a limited model (5.2L) wiring diagram. I will get it for you -its a jeep thing. I Will add later.

    37.jpg
     
  5. Oct 10, 2019 at 11:23 AM
    #5
    Awrench

    Awrench Well-Known Member

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    next at transmission a 3 wire connector, is it plugged in, tight secure, with key on is there 12v on center wire LB wire (Light Blue)
     
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  6. Oct 10, 2019 at 12:48 PM
    #6
    Awrench

    Awrench Well-Known Member

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    as mentioned at left rear of trans - match the connector in diagram with what you have...


    I bottle Pappy Van Winkle’s Family Reserve Bourbon 15 Year Old should do it.
     

    Attached Files:

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