Unfortunately, the relay may be located inside the transmission. Try utube if you have not already.
If you need further help, reach me via phone at https://www.6ya.com/expert/gary_9c859f4aa7e5ab10
SOURCE: Trouble code 54 on a 1995 Jeep Grand Cherokee
Carb'ed Engines:
Code 54 - Mixture Control (MC) solenoid is shorted or the ECM is faulty.
Fuel Injected Engines:
Code 54 - Camshaft (or distributor sync.) reference circuit - No camshaft position sensor signal detected during engine rotation.
Hope this helps
Mike
SOURCE: 2002 jeep grande cherokee check engine light
A common problem on many of the new cars is that when a person gets gas, they don't tighten up the gas cap. This will turn on the check engine light. Did you get gas recently? Another option is to see what code is stored in the ECU that turned the light on. This is done with a scanner tool. If you do not have a scanner, then have a dealer look at it.
SOURCE: 2005 Jeep Grand Cherokee Limited, 5.7L V8, starter
Every morning at lunch time and evening my jeep won't start. It doesn't grind but the electrical goes crazy. After a couple of trys it finally starts. Help
SOURCE: 2003 Jeep Vacuum Diagram
THERE SHOULD BE A EVAP/VACUUM DIAGRAM UNDER THE HOOD ON A WHITE STICKER. SOMETIMES THEY ARE ON THE BOTTOM SIDE OF THE HOOD ITSELF. I HOPE THIS HELPS. PLEASE KEEP ME POSTED THANKS FOR USING FIX-YA AND FOR AN HONEST RATING/COMMENT. GOOD LUCK
SOURCE: Jeep Grand Cherokee 2.7CRD (2004) auto won't change gear
check all the fuses before you do anything else. After all a fuse provides power to the electronic box that controls the transmission. Other than that I would not advice on a more complicated troubleshooting since there is no way for you to test a bad transmission computer, even mechanic shops don't know how to test them. The only thing they would do is slap a known good one and see what happens.
Welcome to FixYa.com
Check the charging system for PO622. the others please clear codes and see if they come back in.
Thank you for Using FixYa.com
Kind Regards, Lee
Your FixYa Expert and Master Technician
435 views
Usually answered in minutes!
I have no reliable info on that system but I would look in the power distribution center near the battery and see if you can find a relay marked for that, then go from there. I may be wrong, but it's a place to start!
×