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Isuzu Trooper Owners Club UK™ Isuzu Trooper, Rodeo, Bighorn, Mu & VehiCROSS Owners Club
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DonaldNZ *
Joined: 07 Feb 2019 Posts: 14 Location: New Zealand
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Posted: Sat Mar 09, 2019 3:16 Post subject: ucs69 4jg2 30-43LE stock japanese import trans shifty as |
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check trans light latches on intermittently on joining obd 4 & 11 code 32 [might be shift solenoid 2-3]
when check trans light comes on it fail safes to high gear
tidy vehicle standard as manufactured except for additional transmission cooler
UCS69.GW -7 107 4 1 2
ENGINE RJC TRANS RMD
trans id plate numbers
30-43LE
97HE415286
trans control module [tcm] numbers
8 97178 702 0
IY001067 97R
tcm has 24 pins 2 rows of 12
pin 10 shift solenoid 1-2 3-4 faulty Brown 12 ohm
pin 12 shift solenoid 2-3 ok brown / black 12 ohm
both draw 1A when connected to 12v
ive run each solenoid on a pulse generator while monitoring max current at around 2 hz for several hours to see if intermittent short in coil, no 1A.
measured trans output to shift solenoid 2-3 at 12v when solenoid on [p,r,n,l,2 & D<20kmhr
ok and operates as it should
measured output to shift 12-34 solenoid , 0.3-0.5 volts
solenoid supposed to be powered going fast in 2 and 3rfd gear in D, neither speed powers up solenoid
i've pulled out the trans ecu
measured device powering good 2-3 solenoid on trans ecu board
8055S 5 legs insulated 220
one leg powered all the time [guess supply]
one leg to solenoid [guess output]
one leg 0v [guess ground]
one leg 5v = off 0v on [guess control]
one leg dont know
measured device powering suspect solenoid
all same except output and control leg which stays on 5 v and does not go to 0v to turn on [guess control]
on testing with board removed and meter on diode test suspect solenoid curcuit device shows two legs relative to output as open circuit when compared to good device
questions: has anyone had this before ?
has anyone had a crook transistor that holds the input to the transistor at 5v ?
has anyone had a crook transistor in trans ecu causing a fault code for the wrong circuit, [code 32 is shift 2-3 yet 12-34 is crook] ?
anyone know datasheet on 8055s 220 insulated device ?
anyone know where to buy one
anyone have pinout on trans computer
anyone have a spare tcm?
Kind regards
Christchurch
New Zealand |
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Posted: Sat Mar 09, 2019 3:16 Post subject: Google Ads keep this community free to join! |
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DonaldNZ *
Joined: 07 Feb 2019 Posts: 14 Location: New Zealand
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Posted: Sun Mar 10, 2019 3:46 Post subject: |
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Had some limited success, swapped one 8055S transistor in the faulty circuit shift solenoid 1-2 3-4 with the transistor driving solenoid 2-3.
the purpose to see if the faulty solenoid swaps with the transistor.
on powering up I discover transmission working correctly, on discussion with an electronics expert friend he has experience of a faulty transistor start working correctly after the heat of soldering.
so if you have a check trans light, code 32 shift 2-3 solenoid faulty, your solenoid measures around 1 amp at 12v, Id suggest you check the 8055s power transistor.
It worked ok for two sessions of an hour last night and again for an hour this morning. I'll take the back axle off the blocks and test drive next. |
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elmataharrak Newbie
Joined: 22 May 2021 Posts: 2 Location: CYPRUS
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Posted: Sat May 22, 2021 20:00 Post subject: |
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Hey,
I have a similar problem with my 1993 AT bighorn also i believe 4jg2. Do you know if this uses the same model transmission?
Thanks |
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DonaldNZ *
Joined: 07 Feb 2019 Posts: 14 Location: New Zealand
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Posted: Sat May 22, 2021 23:30 Post subject: |
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The shift solenoid is actually straight fwd to replace. Maybe 2 hours.
I paid $45 locally for one new solenoid and bought all 3 ( 2 shift & 1 lock up) off eebuygum new as spares for around $100 delivered.
Same as a340 trans from memory.
Pick a nill wind day, wet floor, big clean sheet on ground all to keep dust to minimum.
Drain trans pan into assured clean container then cover, pan off, solenoid unbolt free bolt new one.
Confirm function as two same and one opposite so blow through then power from 12 v to confirm function correct or open with power or close with powe
I swapped out all 3 transistors in the controller and 1 shift solenoid, now it goes like new.
I replaced pan drained fluid with new, not essential. |
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DonaldNZ *
Joined: 07 Feb 2019 Posts: 14 Location: New Zealand
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Posted: Sat May 22, 2021 23:46 Post subject: |
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Bought 3 new from eebuygum.com, still avail today us$64
A340E 3 PC shift (99109) |
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DonaldNZ *
Joined: 07 Feb 2019 Posts: 14 Location: New Zealand
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Posted: Sat May 22, 2021 23:47 Post subject: |
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eebuygum.com |
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