Jump to content
SAU Community

M35 Trans Un/lock Mod

Sunkist

By Sunkist,
in Wagoneers

 Share

Recommended Posts

BoostdR Mentor

BoostdR

Posted
Posted

I guess the idea is to give more direct response in manual mode without the cushion of the converter. I agree with a power increase without a corresponding trans reprogram lockup is a bad idea at high throttle openings. 6 years is a good soak test.

I called Mike yest twice to confirm his thoughts... Can't argue with hard data. I'll keep investigating this power switch

Link to comment
Share on other sites
scotty nm35 Grand Master

scotty nm35

Posted
Posted

Well the same TCU is in the V35 which has a power switch, I can only assume they left it out in the Family wagon version. The switch input may still be there unused though...

I have the Jatco transmission service manual here, I should look to see if the pin is marked 'Power mode' :P

  • Like 1
Link to comment
Share on other sites
BoostdR Mentor

BoostdR

Posted
Posted (edited)

Sounds like a plan Scotty, I'll have a look through the functions menu on the G-Scan and see if I can activate it via CAN command. From schematics it looks like the signal to activate 'Power' mode is transferred to the TCM by the CAN line which will make things harder to synthetically simulate(not impossible). If I can activate it I can easily log shift durations/manual change down rpm points/change points vs throttle position to prove how much the power map changes things to work out if further research is justified.

Matt

Edited by BoostdR
Link to comment
Share on other sites
scotty nm35 Grand Master

scotty nm35

Posted
Posted

Well, looks like the power switch has nothing to do with the TCU, it must go to the ECU then down the CAN line, or perhaps just the ECU is doing all the adjustments directly. A lot of it would be throttle control and timing alterations anyway, for gear shifting.

Link to comment
Share on other sites
  • 2 weeks later...
BoostdR Mentor

BoostdR

Posted
Posted

Interesting reading of the consult 3 manual.

Clear Calibration data of the TCM (EEPROM Clear)

1. Shift selector to R(engine stopped ign ON)

2. Depress and hold brake pedal. Erase DTC while depressing accelerator pedal angle to 25-50%

3. Ignition switch to OFF (Hold for 10sec)

4. Ign sw to ON (10sec)

5. Ign sw to OFF(10Sec)

6. Ign sw to ON(10SEC)

7. Start

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      R32 non hicas power steering solenoid issues!

      By GTSBoy · Posted

      I have no idea what the power steering control module is on a non-HICAS car because I've never seen one. But it is a fair bet that is essentially the same thing as on any other Nissan of the period with variable PS. So, Maximas, that sort of thing. It will pick up the ECU's speed signal off the "bus" (there's not really a bus - any consumers of the VSS are all just connected to that output on the ECU). The output should (most likely) be a PWM signal to give you an effective average voltage between the minimum and maximum values. You could possibly look at the HICAS part of the R32 manual to see what that range is likely to be (for non-HICAS, as it should be about the same).
    • Heyyob22
      Parts required for 4:11 diff gears in an R34 GTR Vspec (A-LSD)

      By Heyyob22 · Posted

      Thank you for the info!    Did you get a 33 gearbox speed sensor to have your speedometer to work? Does the Speedo work but not accurate? 
    • Duncan
      Duncan's Race Car - The Most Overdue Build Thread On Sau

      By Duncan · Posted

      Took me a while to answer that.... Funny thing is, the across the river neighbour did put in an airstrip, built a hanger, and buy a cessna, because strangely they aren't allowed to build a house on the property but there is no problem building an airport terminal They've used in 3 times, once for an attempted landing where they misjudged a little, aborted and missed the trees by so little that new underwear was required. Second time the landing stuck, then a few weeks later the plane left and never returned, so I don't think aircraft noise is going to be an issue. Funny looking back through the last few posts too, I've spent a heap of time lately redoing the roads  and drains so I guess it is a 2 yearly thing to add to the calendar. Those big drains did overflow in the rain about a month ago so that is pretty disheartening....just a reminder that you can't stop nature I guess.
    • D.phantom
      R32 non hicas power steering solenoid issues!

      By D.phantom · Posted

      So I’m having issues with my power steering. the obvious heavy and light and comes on and off randomly now it’s constantly heavy. I’ve read through forums regarding this issue and what I’ve gather is that it’s referring to hicas deletion. That’s the problem mine didn’t come with hicas.    I’ve rebuilt the steering rack, pump, changed the bent hardline on the rack and taken out the solenoid to clean and loosen up the actuator, applied 12v to get it moving. Roughly checked the loom to see if there’s any damage to the loom and nothing. Now I’m checking the wiring. I’ve tested the wiring to the solenoid and it’s fluctuating between 0.07v to 0.03v. Does anyone know what it’s supposed to be reading? 5v? Anyone one know how this all works? Is there a fuse in between? What else is it connected to? How does it connect to the speed sensor? A resistor fried in the ecu? Please help. It’s been years Thanks in advance 
    • niZmO_Man
      Chips/Dents in wheels

      By niZmO_Man · Posted

      that's pretty good condition, those chips are nothing. Get a mobile repairer to sort it out. Nice wheels, I had white 17's on my GT-R once, looked nice.
×
×
  • Create New...