Check the plug behind the cluster, notorious bad boy. Comes loose or corroded terminals.
Can cause all kinds of odd ball behavior.
Also the SIR coil, for the bags, in the steering column goes bonkers, it will set a light at times, and also can knock out the cruise, horn, turn signals among other things.
And all of this stuff feeds or is fed in someway by the PCM.
And let's not forget bad grounds in a jeep causing silly behavior. Battery terminal, cable to engine block/frame, cable from engine to body.
Nor the harness main block at the firewall, corroded terminals are a biggie on that one causing problems.
Bad/loose ground will cause items to back feed into another circuit to try and work.
97 Sahara, 74 Renegade, 72 CJ5, 55 Willy's (the Beast) Boss 302, 6:34 gearing, Bose 901 speakers.
God I miss that Jeep. Forgot the kinda Jeep, 80 SX4.