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Updated On Code 34 & 77 after Oil Pump Replaced E-TEC 3.3 liter V-6
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14 posts Seabird965 14 posts
Seabird965
 
I replaced the oil pump because it was leaking oil & I found a crack in the housing, hoping that would fix my issue. After I did, I still had the codes 34 & 77. I went through the test again.
 
  1. Voltage test - I get about 11 VDC with the oil pump harness connected and 29 VDC when the harness is unplugged. I got no voltage on pin 2 when oil pump test activated
  2. Static Test - I hear no clicking of the oil pump & no oil pumping when activated
  3. Resistance Test ~ 3 ohm from pin 23 of emm to pin 1 of Oil Pump harness
As far as code 77, I understand it is the Start Assist Circuit. I trying to figure everything I should test. But when I unplug the Oil Pump wiring harness, the code goes away.
 
Other things I notice is, Only light 3 & 4 are on with key on no matter if Oil pump harness is plugged in or not. Also last week when I had my software hooked up. I ran through some of the static testing and activated the low oil, Check Engine, No oil lights along with the tach. They all worked good. Tonight, when I tried it , none of the lights came on and the tach wouldn't move. THen I noticed the tach was pegged and stayed pegged even after I disconnected everything including battery. SO maybe I have a new issue or something more related.
 
I have found 4 other post about code 34 & 77 together and all 4 has led to faulty EMM. If that is what ends up the deal, should I send it off to have repaired or buy a new one. If I buy a new one, can I program it or do I have to have a dealer program it. I have the Powersport EVDiag software & the bootstrap cable
 
Also I'm assuming the no start issues is because I don't have 30 volts to activate the injectors
 
Any suggestions on what to check next? Thanks for all the help & This sight has been wonderful & really educational
2007 Ranger Z20
2007 Etec 225HO
 
Engine Model ~ E225DHLSDF
Engine Serial ~ 05142533
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Nordmann 3,020 posts
Nordmann
Other things I notice is, Only light 3 & 4 are on with key on no matter if Oil pump harness is plugged in or not.
It indicates a faulty EMM, all 4 lights should be on cranking engine (Not running, just cranking) or some of the problem could be wires shorted to earth, unlikely from your scenario.
Seeing you are in Texas, a USA EMM repair shop is favorable for you, however Hardware care in Netherland do repairs and programs the EMM. Check freight possibilities.
Do a search here for Hardware care.
Nordmann.

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is a great annoyance to those of us who do.  -Isaac Asimov.
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Seabird965 14 posts
Seabird965
I decided to send it in to Hardware Care
2007 Ranger Z20
2007 Etec 225HO
 
Engine Model ~ E225DHLSDF
Engine Serial ~ 05142533
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