Discovery 2 won't start

[jorge_costa_cv]

I have discovery 2 2000 td5 with ecu nnn500030 not start. i try to make test with x431 but can conect the ecu when i try to read or test the engine.

any way to test and find the problem??

thanks

[sierrafery]

Do you mean you replaced the original MSB101193 ECU with the NNN500030 and it doesnt start with it or it worked with it before and it suddenly doesnt start?

also what do you mean "not start"? , no crank or crank but no fire?

[jorge_costa_cv]

Do you mean you replaced the original MSB101193 ECU with the NNN500030 and it doesnt start with it or it worked with it before and it suddenly doesnt start?

also what do you mean "not start"? , no crank or crank but no fire?

Hi . the ecu is original. the car was 3 month stoped when try to start it not start any more. it crank but no fire. try to make a diagnostic with x431 i can read the eka but cant read test the engine because it fail read ( give me time out). and the check engine light not show.

thanks

[JBM770]

Try cleaning pins and sockets for BCU and ECU modules and plugs with contact cleaner.
My D2 had been sitting for a while and doing this got it running again.
James

[jorge_costa_cv]

Try cleaning pins and sockets for BCU and ECU modules and plugs with contact cleaner.
My D2 had been sitting for a while and doing this got it running again.
James

Can the ecu reset?? is possible how can i program again? i have a fgtech is possible with it??

[sierrafery]

measure the voltage on the battery while cranking...if it fails under 10V it will hardly start...maybe you just need a strong battery

[jorge_costa_cv]

measure the voltage on the battery while cranking...if it fails under 10V it will hardly start...maybe you just need a strong battery

uhmm ok i will try . but why the x431 cant make the engine test?

[sierrafery]

cos the Td5 is not OBDII compliant

[jorge_costa_cv]

cos the Td5 is not OBDII compliant

uhmm ok wichc machine can use with it?
has any way read the ecu with fgtech??

[sierrafery]

nanocom, hawkeye, lynx, autologic, testbook t4, rovacom, dec superscan, tribox mobile.... and maybe few more just to have dedicated menu for D2

[JBM770]

Can the ecu reset?? is possible how can i program again? i have a fgtech is possible with it??

Im pretty sure it doesnt reset itself.

Cant help with the codes but the AutoLogic reader failed to read my BCU for codes but cleaning the plugs and pins worked for me.

James

[sierrafery]

that fgtech is also OBDII so forget about it

[MarknDeb]

If battery is ok another thing to check is the starter fuse under the bonnet, we had this once.

[discorevy]

Can you hear the fuel pump with ignition on , not cranking?

[jorge_costa_cv]

Can you hear the fuel pump with ignition on , not cranking?

Hi it cranking . the check engine ligth not on. i can read abs, reset abs, read eka code with x431 but not read the engine.

thanks

[discorevy]

No , don't let it crank , just have ignition on so lights on the dash , then walk to the back of the car and listen for a sound

[sierrafery]

Hi it cranking . the check engine ligth not on. i can read abs, reset abs, read eka code with x431 but not read the engine.

thanks
what message do you get, if you get "data link error" it can be a feed/earth issue or even ECM failure too, can you see the engine management warning(MIL) working on ignition self test?

[jorge_costa_cv]

what message do you get, if you get "data link error" it can be a feed/earth issue or even ECM failure too, can you see the engine management warning(MIL) working on ignition self test?

No the engine management warning not workink in any condition stilll off all time

[sierrafery]

you need dedicated tester for that cos it must work on self test regardless of the ECM cos the warning light self test is made by the instrument pack...if it was so from the beginning maybe the previous owner blanked it to hide a fault or something cos it's very rare for those LED's to fail.... if the proper tester gives that data link error message it's quite likely that there's a wiring issue or the ECM is fubar'd

[jorge_costa_cv]

you need dedicated tester for that cos it must work on self test regardless of the ECM cos the warning light self test is made by the instrument pack...if it was so from the beginning maybe the previous owner blanked it to hide a fault or something cos it's very rare for those LED's to fail.... if the proper tester gives that data link error message it's quite likely that there's a wiring issue or the ECM is fubar'd

has any way to get the ecu pinout? its a nnn500030

[sierrafery]

it's attached but i doubt it will help you much... it's very hard to fix such kind of things with multimeter IMO

[jorge_costa_cv]

it's attached but i doubt it will help you much... it's very hard to fix such kind of things with multimeter IMO

hi i make a search on x431 i found on land rover list it have obdII iso 15765-4 canbus protocol. this protocol can comunicate with the landrover???

[sierrafery]

Discovery 2 specific diagnostic is compliant with ISO/DIS 15031 Part 4

[jorge_costa_cv]

Discovery 2 specific diagnostic is compliant with ISO/DIS 15031 Part 4

hi has any way to make this nnn500030 immo off?

[sierrafery]

Yes, you can do many things but only with dedicated tester... i dont recommend ''invasive'' methods

[jorge_costa_cv]

Yes, you can do many things but only with dedicated tester... i dont recommend ''invasive'' methods

Can you help me to do this.

[sierrafery]

do you have proper tester which can make programming in the BCU? ... though i dont understand what you are after here

[DiscoDB]

jorge_costa_cv, I think you are being distracted by connecting to the ECU. It may not even tell you want you are hoping to find out.

Unless you suspect you have a faulty ECU (highly unlikely) there is probably only a few reasons it will crank but not start.

No fuel.
No power.

So get back to basics, make sure you can hear the fuel pump running, make sure you have fuel, make sure you have good volts, make sure all your fuses are ok. It is not clear to me if you have ruled this all out.

If all of these are good, the yes you start to get into the more complex diagnostics. So then start with looking for damaged wiring, fuel restrictions etc. And lots of Google research helps.

[jorge_costa_cv]

do you have proper tester which can make programming in the BCU? ... though i dont understand what you are after here

Hi long time. I made a lot off test . i found i have lost ground from the ecu.
some pin out from ecu on black conection where must out the ground do not working. the ecu not send signal(ground to the relay) to the fuel pump and some other but i test the fuel pump its ok. the malfuction lithg not power on when i open the igniotion i found the pinout from ecu not send goround signal to the relay. i need a shematic from the ecu to see all conection and found if someting is wrong in the ecu
thanks

[jorge_costa_cv]

Hi long time. I made a lot off test . i found i have lost ground from the ecu.
some pin out from ecu on black conection where must out the ground do not working. the ecu not send signal(ground to the relay) to the fuel pump and some other but i test the fuel pump its ok. the ?alfuction lithg not power on when i open the igniotion i fount the pinout from ecu not send goround signal to the relay. i need a shematic from the ecu to see all conection and found if someting is wrong in the ecu


jorge_costa_cv, I think you are being distracted by connecting to the ECU. It may not even tell you want you are hoping to find out.

Unless you suspect you have a faulty ECU (highly unlikely) there is probably only a few reasons it will crank but not start.

No fuel.
No power.

So get back to basics, make sure you can hear the fuel pump running, make sure you have fuel, make sure you have good volts, make sure all your fuses are ok. It is not clear to me if you have ruled this all out.

If all of these are good, the yes you start to get into the more complex diagnostics. So then start with looking for damaged wiring, fuel restrictions etc. And lots of Google research helps.

[jorge_costa_cv]

Hi long time. I made a lot off test . i found i have lost ground from the ecu.
some pin out from ecu on black conection where must out the ground do not working. the ecu not send signal(ground to the relay) to the fuel pump and some other but i test the fuel pump its ok. the ?alfuction lithg not power on when i open the igniotion i fount the pinout from ecu not send goround signal to the relay. i need a shematic from the ecu to see all conection and found if someting is wrong in the ecu. the car crank but not start.


jorge_costa_cv, I think you are being distracted by connecting to the ECU. It may not even tell you want you are hoping to find out.

Unless you suspect you have a faulty ECU (highly unlikely) there is probably only a few reasons it will crank but not start.

No fuel.
No power.

So get back to basics, make sure you can hear the fuel pump running, make sure you have fuel, make sure you have good volts, make sure all your fuses are ok. It is not clear to me if you have ruled this all out.

If all of these are good, the yes you start to get into the more complex diagnostics. So then start with looking for damaged wiring, fuel restrictions etc. And lots of Google research helps.