The way to Reset a Grand Cherokee Laptop or computer 1Connect the scan tool's data cable towards the information hyperlink connector (DLC) port. In most Jeeps, the DLC port is located next for the fuse panel below the driver's side dash.2Refer for the scan tool's precise owner's manual on how to run a self test on the PCM and clear the code.
You will find particular emissions-related codes that may perhaps require a Chrysler/Jeep dealership to inspect and clear. Disconnect the scan tool from the DTC port when done. In case you do not have a superior scan tool, refer to Step three.3Disconnect the unfavorable battery cable and leave it disconnected overnight.
Reconnect the unfavorable battery cable in the morning and all but any really hard codes will probably be cleared auto diagnostic software. By disconnecting the battery, you will be primarily giving the laptop or computer a kind of amnesia, whereby the computer system forgets any stored codes. Even so, for those who have not corrected the problem that caused the code inside the first location, the code will return soon and also the "check engine" Auto diagnostics; light will come back on.
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