transmission diagnostic trouble code 4E86 EGS SOLENOID VALVE 3 , 4F89 EGS RATIO MONITOR GEARSHIFT 3-4
Good morning , I am looking for help on this BMW: WBANU53548C114413 I have this transmission dtc that I was called for diagnostic how ever, trough out my resources I have not info . all data , identifix or ondemand, no wiring diagram there is some description and operation info available but I do not find testing procedure for the listed dtc: 4E86 EGS SOLENOID VALVE 3, this is a hard fault circuit code I clear it and it return right away, I wanted to test wiring integrity before condemning a solenoid , a separation point where I can know if my problem is internal in the transmission and not wiring issues external . I believe the other dtc :4F89 EGS RATIO MONITOR GEARSHIFT 3-4 will be related to the first code if the solenoid is not operating correctly there will be issues on gear ratio .
will appreciate your inputs.
Good morning Joel. I’ll like to see adaptation pressures as the most integral and important part of these unit’s diagnostics. Please fwd a screenshot. Thanks
Just looking over the short test. You’ve got to take care of that voltage/charging system before continuing with the egs faults. Hate to go on a wild goose chase. Thanks
thanks , what do you mean with voltage charge ? voltage at egs power and ground?
or you mean charging system
Your short test shows a lot of unhappy modules. Under and over voltage codes. Weneed to correct that situation first. Not a direct influence or relationship with the egs issue but a concerning factor
I was asking g questions to the customer young guy . I ask if he has jump started the car and he said yes, and he show me the jumper is i the vehicle all time I ask him why or how many times he has jump it , he unswer , well I come over to my vehicle at nigth smoke ... and wath videso and listen music on my phone and I need to have it plug in the car to charge it .. I tested the battery and it fail load test , we will rellace it how ever I explain him about smart charge and all co.puters on the vehicle may fet cooked with the voltage issues .
I don't work on a lot of BMW vehicles, but one thing I learned early on with these vehicles, "they need to have a correct operating battery & charging system for the electrical part of the vehicle to work correctly. Any time you have low voltage codes in any module, start your testing with the charging system.
it is a mobile diagnostic I am doing with the bmw , last week end I was working with the dtc for vanos Engine oil flush was my first step it did take care of a those vanos realted issues and I clear all dtc today I recheck it , only this dtc for tariny is after one week driving less voltage codes this time on modules how ever found reason jump started.
I hate to discuss this in private but it is a faster and more precise approach than trying to type a long post. My personal contact info is in my profile. Call me monday and I’ll walk you through it. Later on I’ll post for the entire group.
Look at my 2 videos posted a few months ago in regards to diagnostics and adaptations.
I saw those , but I do not have the chart to compare my values to specifications.
My understanding is this adaptation is similar than fuel trims in engine compensating . for out ranges performance
I know I have a circuit code , how ever I do not have pin out or wiring diagram . I think the egds is internal at the valve body and solenoids are attached to it , if I wanted to do some testing will involves removing the trainy pan , if I am doing that I will replace any seal involved in it.
A bit more complex The same principle but different. Look at my second vidro. The limits for each clutch are there. Like I said, I’ll be glad to explain it to you in person. Call me monday.
I do not know how t get t your profile to ft yourphone nunber . his is my email . thank you
This site is called newTIS just punch in the last 7 of the vin. Decent chance the solenoid is bad but scope it just in case. If so there are solenoid kit available. If it has a ton of miles definitely consider a trans. The control units new only come with the valve body complete. Then needs programming. I believe there are companies that unlock used control units but have not used one. I don’t think it is worth the trouble. If you need a good source for parts let me know.
On Oct 27, 2018, at 7:41 AM, Diagnostic Network <…> wrote: