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The Pajero is the same vehicle as the Montero [here in the US] and the Shogun - it just depends on what country it was produced for. This vehicle came with two different automatic transmissions, a four speed INVECS-II or a five speed INVECS-II tiptronic. Each is controlled by the powertrain control module, but the wiring isn't the same. To be sure I get you the proper wiring information, I need to know which transmission the vehicle is equipped with?
The connection to a switch is simple, and I would add a fuse to be safe. Essentially you need to interrupt the wire between the torque converter clutch solenoid [in the transmission] and the PCM. Wiring harness routing and connector locations differ between the two transmissions, and big harness connectors offer us sections of the harness more easily manipulated. Once the access point is determined we can install the switch. I would use a simple two terminal switch, with one wire connected to the transmission side of the circuit and the other to a good ground; a 3A fuse in either of the switch's wires is a good idea. With the switch in one position the PCM controls the ground that locks the converter. In the other position it locks. There are some potential issues you need to be aware of. The PCM may very likely set fault codes and move to a failure strategy. The following is from the USA Montero repair manual regarding this issue:
"The transmission is locked into 3rd gear as a fail-safe measure, and the "N" range light flashes once per second."
In addition to the information about the transmission, can you tell me why you want to do this? There are other options if you're looking for complete manual control over your automatic.
I await your reply, Jeff
HI AND THANKS FOR THE REPLY
IT IS A 3.2 DIESEL 5 SPEED AUTO AND I AM IN AUSTRALIA.
THE REASON I WANT TO HAVE MANUAL CONTROL IS I TOW A LIGHT WEIGHT CARAVAN AND IT WILL NOT LOCK UP AT ALL WHEN TOWING, AND IT REALLY AFFECTS FUEL ECONOMY AS ITS DOING ABOUT 500 RPM EXTRA EVERY MINUTE ALL THE TIME WHEN TOWING,AND THE TRANS OIL GETS VERY HOT BECAUSE OF THE CONVERTER SLIP.
EVEN WHEN NOT TOWING IT IS VERY SENSITIVE AND UNLOCKS IF YOU MOVE THE EXCELERATOR PEDAL EVEN A VERY SMALL AMOUNT.
MY LAST PAJERO HAD A V6 CHEVY AND TURBO 700 DRIVE TRAIN AND I HAD A SWITCH FOR ITS CONVERTER,, IT WORKED VERY WELL.
CAN YOU GIVE ME DETAILED INSTRUCTIONS AND DIAGRAM TO DO THE JOB MYSELF ? I DID THE TURBO 700 MYSELF SO I AM VERY CAPABLE OF DOING IT ,JUST NEED TO KNOW HOW WITH THIS ELECTRONIC BOX.
I HAVE FITTED AN EXTERNAL COOLER TO HELP THE HEAT WITH TOWING
AND THE FLUID IS NOT BURNT AT ALL SMELLS SWEET AS AND ISA A NICE COLOR.
LOOKING FORWARD TO DO THIS
THANKS IT ALL SEEMS TO BE EASY ENOUGH TO DO .
I WILL GIVE IT A GO IN THE NEXT FEW DAYS AND LET YOU KNOW
I HAD A LOOK AT IT MYSELF AND COULDN'T WORKOUT WHICH COMPUTER TO TAP INTO
SO I TOOK IT TO AN AUTO ELECTRICIAN AND HE SAYS THE COMPUTER PLUGS ARE DIFFERENT TO THE ONE IN YOUR PICTURES ,THE PIX ATTACHED ARE OF MY COMPUTERS ,THEY ARE BEHIND THE LEFT HAND KICK PANEL,AND ARE PIGGYBACKED ON EACH OTHER,, AND HE SAYS NONE OF THE PLUGS MATCH UP WITH YOUR PIX, ALSO BOTH COMPUTERS HAVE YELLOW/RED WIRES COMING OUT OF THEM
ALSO WHY DO THE KITS AVAILABLE ON EBAY HAVE RELAYS ATTACHED TO THE WIRING ?. ANY HELP WOULD BE GREAT .......THANKS........BARRY
THE COMPUTER MODULES ARE NOT LABELED , THE TRANS IS 5 SPEED .. . . I THINK IT IS A V5A51-7-AA RE, RH. [i googled 2004 pajero transmission]
THE VIN NUMBER IS... JMFLYV78W4J000852... THIS MIGHT HELP ?
I DID ANSWER A COUPLE OF DAYS AGO BUT WHAT I WROTE SEEMS TO BE GONE .
ANYWAY I MUST BE A DUMBASS AS NOW I AM REALLY CONFUSED
TO START WITH ARE WE STILL USING THE YELLOW/RED WIRE ?
AM I EARTHING IT OUT .OR HAS THE EARTHING IDEA GONE ?
AND NOW WE ARE PUTTING 12 VOLTS VIA A RELAY TO TERMINAL 15 IN THE BIG BLOCK OF WIRES ?
AND IF I AM , IS IT TO BE SPLICED IN AND NO CUTTING OF THIS WIRE ? SO 12V IS PUT TO THAT WIRE WHEN THE SWITCH IS ON ?
AND DOES IT MATTER THAT VOLTAGE WILL BE GOING BOTH WAYS IN THAT WIRE ?
CAN YOU DO ME A DRAWING OF THE CIRCUIT IN EASY TERMS ?
PLEASE READ MY LAST REPLY ,AND HOPEFULLY PUT ME STRAIGHT.
OK NOW IT IS VERY SIMPLE I WILL TRY IT TOMORROW ,
I DON'T KNOW WHY YOU WOULD USE A RELAY WHEN YOU DON'T HAVE TO
AND LET YOU KNOW HOW IT GOES AND WHAT COLOUR TERMINAL 15 IS
HI JEFF THERE IS A PROBLEM
I HAVE HAD IT HOOKED UP AS PER INSTRUCTIONS
BUT IT LOCKS MOMENTARILY THEN UNLOCKS AND THE NEUTRAL LIGHT ON THE GEAR INDICATOR STARTS FLASHING ONCE EVERY SECOND AND DOES NOT STOP TILL THE IGNITION IS TURNED OFF AND RESTARTED, THE FOUR WHEEL DRIVE INDICATES IT IS IN LOW RANGE 4X4 WITH CENTRE DIFF LOCKED .BUT ONLY FOR A WHILE ,[IT STOPS AFTER A WHILE]
HAVE A LOOK AT ebay.com.au AT ITEM NUMBERS 250923660970 AND 280865994022 .
I SENT A MSG TO SOMEONE WHO BOUGHT ONE OF THESE KITS
HE SENT ME BACK INFO FROM THE KIT
I WILL TRY TO ATTACH IT , AND MAYBE YOU CAN TELL ME WHERE THE RESISTOR CONNECTS TO
MY CAR DID NOT GO INTO LIMP MODE IT JUST UNLOCKED THE CONVERTER AND STARTED THE N LIGHT FLASHING AND THE L 4X4 LOCK LIGHT TO BE ON.
SEE THIS NEW ATTACHMENT THE OTHER BUYER SENT ME AND SEE IF U CAN WORK OUT WHERE THE RESISTOR GOES,, IT MIGHT HELP, IT SEEMS TO GO ON 2 OF THE RELAY TERMINALS,
I HAVE THOUGHT AND THOUGHT ABOUT THIS FEEDBACK PROBLEM, HOW ABOUT CUTTING THE ECU WIRE AND PUTTING IT THROUGH, A 2 WAY SWITCH WITH THE WIRE FROM TRANS TO THE MIDDLE TERMINAL ON THE SWITCH AND ,EARTH ON ONE SIDE AND ECU TO THE OTHER SIDE TERMINAL, THIS WAY WHEN THE SWITCH IS ONE WAY IT CONNECTS THE ORIGINAL WIRING UP AND WHEN SWITCHED THE OTHER WAY IT EARTHS THE TRANS SIDE OUT WITH NO FEEDBACK TO THE ECU. THE RESISTOR COULD JUST BE FOR THE LIGHT WHEN USING A RELAY TO SWITCH THE WIRES FROM ECU TO EARTH.
the relay could be a 2 way relay and do the same thing as a 2 way switch
MAYBE WER'E GETTING SOMEWHERE NOW.
I HAVE USED A DOUBLE RELAY IN THE PAST TO ACTIVATE UP / DOWN ON A 12V ELECTRIC ACTUATOR RAM.
I WILL SEE MY NEPHEW WHO IS AN AUTO ELECTRICIAN ABOUT THE SETUP. .
IT LOOKS EASY ENOUGH TO DO .
I WAS AT AN ELECTRONIC SHOP TODAY ASKING ABOUT RESISTORS ,THAY COME IN DIFFERENT VALUES / SIZES, WHAT VALUE / SIZE DO I NEED ??
[ OR WOULD A DIODE IN THE SWITCH IDEA WORK BY STOPPING FEEDBACK SPIKES AS THEY TOLD ME ELECTRICITY ONLY TRAVELS ONE WAY THROUGH A DIODE ] ???
WOULD IT HURT ANYTHING MAINLY ECU IF I TRIED THE 2 WAY SWITCH ?
I SAW MY AUTO ELECTRIC NEPHEW YESTERDAY AND HE WILL DO IT NEXT WEEK HAVE A LOOK AT THE ATTACHED PIX THAT SHOWS THE RESISTOR ,
IT IS THE SAME ONE HE USES AS AN EXCITER FOR AN ALTERNATOR , AND HE SAYS THE WIRING IS QUITE EASY AND IS MAKING IT READY TO HOOK UP FOR ME .
ALSO MY NEPHEW PHONED AN AUTO TRANS FRIEND OF HIS WHEN I WAS THERE AND HE SAID DONT DO IT AS IT WILL WRECK THE CONVERTER WHICH IS THE WEAKEST PART OF THE DRIVETRAIN ON THE NP.
BUT EVERYTHING I HAVE READ IN FORUMS IS ALL POSITIVE .
I WILL STILL DO IT ANYWAY BECAUSE I THINK ITS A GREAT IDEA.
ALSO CAN THE PROGRAMING OF THE COMPUTER BE ALTERED TO NOT BE SO SENSITIVE TO THROTTLE MOVEMENT ?
WHAT'S YOUR THOUGHTS ON IT WRECKING THE CONVERTER ?