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Computer re-learn in NL??

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  • Patagonia
    Valued Member
    • Dec 2009
    • 845
    • Santiago, Chile!!!!!

    Computer re-learn in NL??

    Browsing in the internet I ran across the procedure for computer re learn after battery disconnection on the 1998 Pajero...thought only newer Pajeros with the Invecs II learned something .
    So, has someone heard about this before?, would it be good to do it?

    This is the proposed procedure:

    PLEASE READ THIS FIRST *
    The following general procedures are to be used if driveability problems are encountered after power loss or battery has been disconnected. These procedures may provide an aid in eliminating these problems.
    To reduce the possibility of complaints, after any service which requires battery power to be disconnected, vehicle should be road tested.
    COMPUTER RELEARN PROCEDURES
    Vehicles equipped with engine or transmission computers may require a relearn procedure after vehicle battery is disconnected. Many vehicle computers memorize and store vehicle operation patterns for optimum driveability and performance. When vehicle battery is disconnected, this memory is lost. The computer will use default data until new data from each key start is stored. As computer memorizes vehicle operation for each new key start, driveability is restored. Vehicle computers may memorize vehicles operation patterns for 40 of more key starts.
    Customers often complain of driveability problems during relearn stage because vehicle acts differently then before being serviced. Depending on type and make of vehicle and how it is equipped, the following complaints (driveability problems) may exist:
    * Harsh Or Poor Shift Quality * Rough Or Unstable Idle * Hesitation Or Stumble * Rich Or Lean Running
    * Poor Fuel Mileage
    These symptoms and complaints should disappear after a number of drive cycles have been memorized. To reduce the possibility of complaints, after any service which requires battery power to be disconnected, vehicle should be road tested. If a specific relearn procedure is not available, the following procedure may be used:
    Automatic Transmission
    * Set parking brake, start engine in "P" or "N" position. Warm-up vehicle to normal operating temperature or until cooling fan cycles.
    * Allow vehicle to idle for one minute in "N" position. Select "D" and allow engine to idle for one minute.
    * Accelerate at normal throttle position (20-50%) until vehicle shifts into top gear.
    * Cruise at light to medium throttle. * Decelerate to a stop, allowing vehicle to downshift, and use
    brakes normally. * Process may be repeated as necessary.
    Manual Transmission
    * Place transmission in Neutral position. * Ensure emergency brake has been set and all accessories
    are turned off. * Start engine and bring to normal operating temperature. * Allow vehicle to idle in Neutral for one minute. * Initial relearn is complete: process will be completed during
    normal driving.



    Regards
    2000 SWB NL 3.5 SOHC V6 AT.
    Adjustable suspension, Rear Locker, Suspension Seats, Cruise Control, 8500 Lbs winch, all factory fitted.
    31x10.5R15 Pirelli ATR?s and forever thinking on the lift.
    2009 SWB NS 3.2 DOHC DID AT 265/70/17 BFG AT/KO, OME SD Springs +4 Rear locker, 8.500 Lbs Winch...new toy!!!
  • goldnugget
    Senior Member
    • Jan 2011
    • 348
    • Qld

    #2
    This was the fix/reset for the magna I had as well. resets the transmission and ecu. Make sure you do the learning procedures before taking it out on the road, even then, try and stay in a suburban area (no main roads) for your first drive. I found that the first few times you come to a complete stop, the engine would stall (learning the lower idle point), then restart and continue a few times more until its idling smoothly at every stop.

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