DTC's P0743, P0753, P0763 and P0758 after rear main seal swap
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Joined: Aug 2009
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ml 320 -1998
DTC's P0743, P0753, P0763 and P0758 after rear main seal swap
I got an -98 ML320 and just got done replacing the rear main seal on it. After the new seal was installed ran the car for about ten minutes without the tranny to make sure the seal is holding.
Reinstalled the tranny added about 1/2 Qt of fluid to top of what fell out during removal. started the car and instantly got TDC's P0743, P0753, P0763 and P0758. Checked the ohm and cleaned the connector base at teh tranny end no help. checked teh voltage coming to the four solenoids in question and got nothing from the ETC. so any ideas is the tranny computer under the instrument cluster done? since no volts are coming from it? or could it be the electronic conductor plate? did the running of the car with no tranny cause problems? nothing was done to the tranny while it was off. Also checked continuity from the ETC to the connector at tranny all were could no shorts etc... only problem was that pin#6 at tranny end wasn't 11-14 volts when power is turned on?
Any Help would be greatly appreciated.
Reinstalled the tranny added about 1/2 Qt of fluid to top of what fell out during removal. started the car and instantly got TDC's P0743, P0753, P0763 and P0758. Checked the ohm and cleaned the connector base at teh tranny end no help. checked teh voltage coming to the four solenoids in question and got nothing from the ETC. so any ideas is the tranny computer under the instrument cluster done? since no volts are coming from it? or could it be the electronic conductor plate? did the running of the car with no tranny cause problems? nothing was done to the tranny while it was off. Also checked continuity from the ETC to the connector at tranny all were could no shorts etc... only problem was that pin#6 at tranny end wasn't 11-14 volts when power is turned on?
Any Help would be greatly appreciated.
Super Member
Joined: Jun 2008
Posts: 835
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From: Bay Area, CA
09' E320
Thats correct. You might clear the OBDII code but not the propriatary one.......
*edit* Not the ONLY way. A few other high end scanners can also read MB modules.
*edit* Not the ONLY way. A few other high end scanners can also read MB modules.
Last edited by TMAllison; Aug 14, 2009 at 12:25 AM.
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Joined: Aug 2010
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'99 ML430
Replaced conductor board now P07043 code
Kinda new to forum; first post....so don't be too hard on me.
I did a search; not too much to look at.
'99 ML430 was stuck in limp mode w/ P0715 code.
I replaced:
conductor plate,
shift spring (precautionary),
connector bushing ($13 from dealer), and
filter and fluid.
Put it back together, still stuck in limp mode now with 7043 code.
I just took it apart:
measured resistance.....2.1 Ohms
replaced T/C solenoid O ring,
checked pins at connector for continuity,
sprayed brake cleaner on trans connector, and
reistalled the valve body etc.
Still stuck in limp mode and shows 7043 code.
I can clear it temporarily with my OBDII scanner, but it comes back when car is driven.
Perhaps the computer needs to be reset....? Just frustrating because this was never the problem before only a speed sensor fault.
Thanks,
Jon
I mainly am into twin turbo Nissans, this is my wife's ML430
I did a search; not too much to look at.
'99 ML430 was stuck in limp mode w/ P0715 code.
I replaced:
conductor plate,
shift spring (precautionary),
connector bushing ($13 from dealer), and
filter and fluid.
Put it back together, still stuck in limp mode now with 7043 code.
I just took it apart:
measured resistance.....2.1 Ohms
replaced T/C solenoid O ring,
checked pins at connector for continuity,
sprayed brake cleaner on trans connector, and
reistalled the valve body etc.
Still stuck in limp mode and shows 7043 code.
I can clear it temporarily with my OBDII scanner, but it comes back when car is driven.
Perhaps the computer needs to be reset....? Just frustrating because this was never the problem before only a speed sensor fault.
Thanks,
Jon
I mainly am into twin turbo Nissans, this is my wife's ML430
Junior Member
Joined: Sep 2004
Posts: 19
Likes: 0
1985 300cd 1994 E320 cab.
you need das software or it will never erase the reason it happened is starting the car don't ever do that again with the trany i have tryed to erase codes in the egs with solus and launch euro edition it works but i have had it not work before das is what you need.
Last edited by mbwhat; Aug 31, 2011 at 07:06 PM.
