ECU Problem - Toyota / Lexus Engine Not Starting 1JZ - 2JZ
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- Опубліковано 29 вер 2024
- This is an issue with the earlier Toyota's such as the supra, soarer, cresta, gs300, aristo etc. Watch till the end.
ECU leaky caps Capacitor leak ECM
Disclaimer:
This video was created for informational and educational purposes only. I cannot guarantee against the improper use or unauthorised modifications of this information. No liability for property damage or injury incurred as a result of any of the information contained in this video is assumed. Use this information at your own risk. I recommend safe practices when working on any vehicles and with tools seen or implied in this video. You are using the information and automotive parts shown in this video solely at your own risk. It is not intended to be a substitute for the professional advice of a service centre or mechanic.
I owned a few that had this 1997 ES300 3.0ltr. and 2000 Avalon Australian spec 3.0 , so very common issue .
thanks for the video
now here is my story
i drive a 2007 Toyota Mark x its has the 4GR engine this Engine is similar OR almost Similar to the engine in Lexus is250,
many years ago i developed a minor problem with transmission Which seemed to clear away by itself
the car Would REV so high(4000RPM) and the rev will not match the speed it was engaging gears 1, 2, 3 but omitting 4 ,5,6
reported to mechanic .. all he did was disconnect the negative side of the battery terminal and reconnect it back then the car performed well with no problem
Many months later this problem came once in a while and i did resolve it by disconnecting the battery terminal
the problem became more and or routine service i asked the dealer to service my gear box by changing the ATF which was done and problem still persisted,
one day on routine battery service the technical told me my battery voltage is low(9.0)V There was no Check engine light , no Battery flashing all good) He Said "U NEED TO REPLACE YOUR ALTERNATOR SOON"look like the alternator is not charging well, he allowed me to drive
Few weeks later the Starter died and we had to replace it
after replacing the STARTER 2 months passed by and the second STARTER ALSO died
we replaced it with a new STARTER thereby after 3 months the ALTERNATOR "DIED/FAILED"
question
1 WAS THE POOR OR LOW VOLTAGE FROM THE ALTERNATOR CAUSING THE STARTERS TO DIE?
2. WAS THE LOW VOLTAGE ALSO CAUSING THE COMPUTER TO MALFUNCTION
we replaced THE ALTERNATOR and on that replacement we got a volt reading of 12.4V
now back to the Transmission
the problem became more common NOW I HAD to always reset the ECU by disconnecting the negative side of the battery every time i want to drive and when i switch off the car if i have to drive it i have to reset by the same procedure and this became annoying
on diagnostic no error code was captured
THEN gear box dealer decided we replace the shift solenoid which we did all 8 of them
same problem car shift 123 not 456 Very annoying
he then decided its an electrical problem
then we took to electrician he Scanned said error codep0176( shift body solenoid c remain open)
learning
p603 engine stall history
He said he cannot fix my car because
which
2 " am not sure if its the gear box or ECU OR WIRING" GAVE ME MORE HEADACHE
3.Imay be forced to strip off the car and that is too much of a job to do
definitely
Replaced
TIL I SAW THIS VIDEO
QUESTION
1 from my history do u think this is an ECU PROBLEM
2.I CANT FIND A TRANSMISSION WIRING DIAGRAM ANYWHERE ON THS CAR WILL CHANGING THE ECU NEW ECU BE A HELP remember the disconnecting and connecting battery terminal to reset then the car wud function well
Please help my e mail
mikdan2006@yahoo.com
mik2013@gmail.com
Interesting case, first question when the alternator was replaced the 1st time was the battery properly tested? Or replaced at the same time.
Second question, what exactly went wrong with the alternator? Did it at any point start overcharging the car? This can cause ECU problems.
Third question were the old starter motors stripped and checked to see what caused them to fail? These are the some of the first things which should be checked in order to track down where the problem is.
Generally on these later model Toyota & Lexus cars the ECUs are fine and only give issues when there is an over voltage condition, damaged wiring, accident damage or water ingress.
@@AutoBuddynz `it a
was undercharging
i Have tthe 2 starter That were Replaces They are Denzo toyota Lexus Clearly Marked 12V rEMEMBER in my story the BatteryAlternator was Providing Low Voltage, am not a amechanic but Could the prolonged Low Voltage from the Alternator over a period of years Causes the Starter to Die and Affected the ECU ALSO, What do u think Sir?
the battery were checked and new one replaced, problem was the alternator was generally old and replaced
@@michaeldande Constant low voltage would damage the starter. Its not easy finding a repair manual for the Toyota Mark. What I would suggest is the communication wires between the trans, ECU and engine would have to be checked, you should be able to possibly use a similar Toyota and get a wiring diagram from www.alldata.com/diy-us/en. Its hard to diagnose an intermittent without actually checking the car in person.
1uz aswell this is a big problem I think you solved my issue I’m getting a b1261 code on my 98 ls400 ecu no communication
@@xfatesnipes2041 Thanks for the comment.
Very useful information. Ended up here with crank no start, only when it rains.
Thanks!
My 1JZ behaves the same and I think replacing the ECU will help sort out issues
Great, hope it solves your issue. You can get your existing ECU fixed if its not eating the tracks yet.
@@AutoBuddynz we tried to repair my sons ECU but the corrosion ate away one of the pins so it didn’t work correctly. Any idea where to find a replacement? They are no where to be found ugh
@@RachelsPartyOf5 Ebay or Toyota wreckers would be the first place I would try. Otherwise a specialist ECU repaired might be able to fix the board.
@@RachelsPartyOf5 if it's the pins of a capacitor then just buy a replacement cap and desolder the old one etc, if it ate away a PCB trace, then you can use copper tape as a temporary fix
I fixed my shat capacitors last year that ate through the tracks this way which let me test run other stuff until I installed a replacement ecu
....ya gonna have to replace the ECU though, the other control modules should be checked out as well though cos they all got dodgy capacitors
TURNS OUT ALL I HAD WAS A FLAT BATTERY EVEN THOUGH IT SEEMED ALLRIGHT. AFTER TAKING COILS AN PLUGS OUT TRYING EVERYTHING EVEN DROPPED A COIL BOLT IN TO THE CILINDER HAD TO MAGNET IT OUT LUCKILY. NEW BATTERY ALL IS WELL STARTS EVERYTIME
is this common on the later 2000 jzs161 ecu?
Generally its the 90s ECUs which suffer from this as they used the older style electrolyte capacitors.
amazing . can this start as an intermittent fault and then eventually not start ?
Yes thats exactly how it start off. Sometimes it will be difficult to start then eventually gets to the point when it will not start, as seen in this video.
I just replaced all the caps on my jzs147 ecu and still no start. My spare ecu has the same bad caps and ot fores up just runs like sht. The ecu i reppaced caps on had the same bad ones and ran the same way. Now it womt run at all.
If ur caps have leaked there could also be circuit board damage
Great video and super detailed diagnostic process!
Appreciate it! Thanks.
Nice job. Old school, fix not replace. Nice video as well
Great video. Mine just happened today crank but won't start. It was working last week but after the Strom yesterday today just won't work. Do you have email or something I can personal message you?
My 1993 previa is doing this
Best to start with the basics first. Testing for fuel, spark, air etc before faulting the ecu
How did you fix the traces on board and whats that spray
The tracks on the board were fixed using enameled copper coated wires. The spray is called circuit board lacquer. Its not an easy repair if tracks are damaged, ideally it would help if your firmilar with circuit board repairs or know someone who is.