I own a Wrangler and love it. I have owned an older model Grand Cherokee and loved it. I just bought this used Grand Cherokee and like it a lot, but the new computers are driving me crazy. I have had a few different things happen that I am uncertain to the cause. Three times in the last month, the message center said "Service Electrical Brake System" and the check engine light came on. As soon as I turned off the vehicle, the check engine light went off and so did the electrical brake system message and no code was stored. The first time it happened, all of the instrument cluster gauges went off and then came one again with the engine still running. However, this is the fourth time I have gotten the electrical brake system message and the check engine light stayed on. So without shutting it off I had Autozone check the code and it came back as U1411. This has happened right after starting it and after driving a few miles down the street. I am only in a major city for 2 more days (of which the dealerships are closed for the holidays) and live 4 hours from a Jeep dealership and don't want to take it that far if I can fix this myself. Any ideas on what the problem could be? Ignition switch? ECIM?
Code U1411 and Service Electrical Brake System shown on 2005 Jeep Grand Cherokee
by GrandWrangler in Lake City, CO on December 23, 2010
ANSWER by Johnny Mopar on December 28, 2010
You will not be able to fix it your self without the proper diagnostic test equipment which only a dealership will have. I do not have a listing for a code U1411, how ever there is a code U140E. Set Condition: If the Anti-Lock Brakes Module either fails to receive vehicle configuration data from the Engine Control Module (ECM), Powertrain Control Module (PCM), Front Control Module (FCM), Final Drive Control Module (FDCM) or the configuration data it receives from the ECM, PCM, FCM AND FDCM is invalid. As you can see, this is not a repair for anyone but a qualified Chrysler trained technician. the drive to the dealership is well worth the time spent. you can go to a Chrysler, Dodge dealership as well. Possible Causes WIRING HARNESS, TERMINAL, CONNECTOR DAMAGE DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES CAN C BUS CIRCUITS OPEN OR SHORTED ECM OR PCM DTCs PRESENT ECM OR PCM NOT PROGRAMMED OR PROGRAMMED WITH INCORRECT VIN FCM NOT PROGRAMMED OR PROGRAMMED WITH INCORRECT INFORMATION ECM OR PCM FCM FDCM ANTI-LOCK BRAKES MODULE