Troubleshooting JEEP G. Cherokee PCM with No Communication after failed DIY no charging repair

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[@shawncd1]

Dont forget your capacitor

[@ecurepair]

I almost did. Remembered at last second before closing it up.

[@Electronic4U-david]

It was a good video. I enjoyed What is the best temperature for the hot air on the right side? In one case while working with hot air, I mistakenly poured cleaning fluid instead of flex and burned the IC. It was a stupid mistake.

[@ecurepair]

I usually run them both close to max temp and airspeed for these units. The case on these ecu's soak up a lot of the heat thats why 2 is needed. Its much faster then using preheater to bring it up to temp and I like to avoid heating up the entire unit because of the bga.

[@Electronic4U-david]

@@ecurepair thank you very much

[@cyberslacker5150]

Great work! Great Video. I tried to replace these since alternators blow them all the time. But I have a hard time heating them. l'll use two heat guns next time. I got some of these Freescale MC33888 chips but I think they were imitations from China. And they seemed to not work good. I get them from other used PCMS from the junkyard.

[@ecurepair]

I'm still milking a hoard I of them I purchased when they first went obsolete.

[@DavidEssien-q4u]

Thank you so much for the video sir

[@briankotze57]

Thank you. Always good to see you work

[@SkySky-zr3bt]

Great video and explantion during the process! You have new subscriber.

[@samueldasilva402]

Excellent work. A question, is there any equipment that can completely clone that PCM model? That is not so expensive? Do the complete reading of the micro and the writing by OBD or by JTAG?

[@ecurepair]

The tools I use are pretty expensive so not sure I could give any meaning full advice on the lower cost ones. ngc5 is listed in Kess3 for jtag and some models for obd2, never tried it though. Might could do it with original xprog. it does ngc3 & 4. 5 is probably same as 4 but again, I havent tried it. Never had the need to clone these. Have always just reflashed them with legacy chrysler tool.

[@SkySky-zr3bt]

I have questions. What hot air station are you using brand? What temp and wind speed? I think its the first time I see someone using 2 hot air station at the same time.

[@ecurepair]

I mainly use a quick 861dw. The other one is a metcal hct900. Temperature/wind varies with what im doing but i normally am in the higher ranges.

[@SkySky-zr3bt]

Thank you very much for reply👍

[@giu6124]

Thank you for another amazing video.😊

[@Fabi....]

Good work 👍👊

[@ibrahimwaheed987]

Great work

[@abbshus7421]

Thx for sharing 🎉

[@fjs1111]

Interesting!! What is the Microchip MCU, or is the Microchip chip a CAN transceiver?

[@ecurepair]

Its a driver ic but the low side drivers are controlled through spi so they can shut down main chip if not right.

[@fjs1111]

@@ecurepair ah sort of like a watchdog

[@fjs1111]

@@ecurepair thanks

[@hinsabronakashima]

try mechanic 360 ice cool flux a lot easy to clean

[@MsFireboy2]

Would the chip be classified as a QRP package?

[@ecurepair]

Its a 36-PIN PQFN

[@MsFireboy2]

@@ecurepair I have soldered a 32-pin chip in Of course I used a lot of de-solder wick. About three years ago my brother and sister in-law gave me a soldering microscope I use it all the time. I enjoyed watching your video and your techniques.

[@ecurepair]

@@MsFireboy2 Thansk for your comments. A microscope is a tremendous help, that was a good gift.