truck transmission diagnostics
ud transmission diagnostics

Transmission diagnostics for Nissan UD

1500 and 1600 trucks

with Jatco JR403E Transmissions and Aisin 450-43LE Transmissions


UD Trucks 1988 thru 1998 used the Jatco JR403 automatic 4 speed transmission. 1999 and up used the Aisin 450-43LE transmission which is a 4 speed automatic. Please be sure of what year your truck is and what year and model transmission you have for proper diagnostics.

Other model UD trucks use Allison Transmissions. please see our Allison page for information regarding these transmissions.



  Purchase diagnostic information for 1995 thru 2004 Nissan UD trucks. $10.00   This only includes how to retrieve trouble codes and code descriptions. no wiring diagrams or diagnostic directions.
(we currently only have 1995 thru 2004 information available, please check back later for further information)


Please visit our Tech Tips page for free information and technical tips as well as free technical help via e-mail with an ASE certified technician.

Free technical information on Aisin 450-43LE transmission

Both the Jatco JR403E and Aisin 450-43LE transmissions use Dexron ATF oil. 


allison transmission diagnostics codes
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