With a scan tool, or try turning key on, off, on, off, on and counting the blinks of the check engine light. blink, blink, blink, pause, blink would be 31.
With a scan tool
With a scan too or with a battery disconnect.
Check for codes if you have a check engine light illuminating.
You can't. This is an OBD2 compliant vehicle, and as such you will need a scan tool to access the codes.
That is the check engine light. Have it checked for codes and diagnosed by a trained mechanic.
After 1995, an OBDII scanner is necesary to read the engine codes. If you do not have access to a scanner, you can take your vehicle to AutoZone and they will scan ffree of charge.
There are pages and pages of codes, have it checked by a scanner and then diagnosed from there.
The check engine light is reset with a scan tool after repairing the failure that caused the trouble codes to be stored in the computer.
The engine computer is the voltage regulator on a 1993 Jeep.
If the "check engine" light is illuminated, check for codes. The codes will help point to the cause. Your local auto parts store will read and diagnose the codes at no cost.
Unhooking a battery doesn't clear the codes on a 2003 Jeep. You need a scan tool.
No