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ucs69 4jg2 30-43LE stock japanese import trans shifty as


 
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DonaldNZ
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Joined: 07 Feb 2019
Posts: 11
Location: New Zealand

PostPosted: Sat Mar 09, 2019 2:16    Post subject: ucs69 4jg2 30-43LE stock japanese import trans shifty as Reply with quote

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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PostPosted: Sat Mar 09, 2019 2:16    Post subject: Google Ads keep this community free to join!


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DonaldNZ
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Joined: 07 Feb 2019
Posts: 11
Location: New Zealand

PostPosted: Sun Mar 10, 2019 2:46    Post subject: Reply with quote

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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