1997 Isuzu Trooper DTC 37

SAMLUDVIG

MEMBER
1997 ISUZU TROOPER
3.2L
V6
4WD
AUTOMATIC
250,000 MILES

Dear sir
I am trying for some time to find a solution to the dtc 37
I have Isuzu wiring diagrams and diagnostic procedures
I also use tech1 but to no avail
the problem is that when I connect the tech 1 it sets high line pressure as default, and when I drive in order to make the problem reaper while recording on the tech 1, the problem doesn't show up.
it only appears as soon as I disconnect the tech 1
I followed the Isuzu diagnosis of the fault code to the letter, numerous times.
All tests are o.K which means the fault is in the mem cal.
but I also replaced each ecu separately and both together, and the code still appears
I replaced both shift solenoids with no result, still get code 37
pls help
sam

2 Replies

HMAC300

MECHANIC
48,601 POSTS

I'm surprised you can connect a tech 1 to your car, a tech 1 only reads OBD1 codes I think and you have an OBD2 system which there is no code 37. Try a tech 2 to read your codes. The code 37 only relates to a hombre, passport and rodeo not a trooper so I think it is erroneous

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Monday, December 30th, 2013 AT 4:43 PM

SAMLUDVIG

MEMBER
2 POSTS

Dear expert
96-97 models that were sold in my country arrived with aldl protocol but obd 2 connector
tech 1 has an obd 2 interface and thus reads these codes
I'm also working with an Isuzu diagnostic book that is for 97 model and dtc 37 is there
any way since I basically did every thing by the book an more to no avail,
I decided to take out the tranny and swap it for a one that I have on the shelf
if I still get code 37. I'll shoot the damn car.

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Friday, January 3rd, 2014 AT 11:05 PM