This is one of those DAYS, I wish I did not do this. 2017 Cherokee. Recently replaced the oil filter cartridge/cooler housing because of oil leaks. That is all good but came to me yesterday for a different reason. The driver has had intermittent warning lights come on the dash and one time, while driving, the vehicle shut down and she had no power steering and pulled over and did a restart and has been fine ever since but still the lights intermittently. Came to me, no lights on. Intermittent red battery light, red electrical system/throttle control light and amber start/stop light. Did a charging system check and charging 14.36 volts with headlights and blower on high speed. Idles at 14.33 with just engine running. Shows right at 13.0 volts before start and holds above 10.4 volts when battery loaded. Did find that the vehicle OE battery has been replaced with a 94 series AGM battery but is supposed to have a 48 series AGM battery instead. The 94 is for non start/stop vehicles and the 48 is for the start/stop vehicles. Battery date code is from Nov. of 2022. She cannot remember if that is when battery was replaced. I drove yesterday and had no lights or problems. Today, has the amber CEL on but cannot pull codes. Will not pull codes and will not communicate but has no drivability problems. I do have constant 12 volts at MIL/CEL connector and has good ground. I get 12+ volts at connector. The scanner works in my own vehicle but not in the Jeep. I have checked fuses with none found to have a problem.
Any suggestions or anything to jar my brain for what I may have forgotten about or missed? I suspect a known weak area of the TIPM.
Any suggestions or anything to jar my brain for what I may have forgotten about or missed? I suspect a known weak area of the TIPM.