INDEX

Copyright © ATSG 2006

ISUZUJR403-E

SELF DIAGNOSIS AND CODE RETRIEVAL.................... ............................................................................... 3

ELECTRICAL COMPONENT CHECK............................................................................................................. 7

SOLENOID SHIFT CHART................................................................................................................................... 12

LINE PRESSURE CHART...................................................................................................................................... 18

APPLICATION CHART............................. ............................................................................................................ 21

UNIT DIS-ASSEMBLLY......................................................................................................................................... 22

SUB ASSEMBLY OVERHAUL............................................................................................................................... 37

VALVE BODY ...................................................................... ................................................................................... 44

CHECKBALL , ORIFICE AND FILTER LOCATIONS....................................................................................... 49

UNIT RE-ASSEMBLY............................................................................................................................................. 98

AUTOMATIC TRANSMISSION SERVICE GROUP18639 S.W. 107TH AVENUEMIAMI, FLORIDA 33157

(305) 670-4161

INTRODUCTIONISUZU JR403-E

"ELECTROMATIC"

1

No part of any ATSG publication may be reproduced, stored in any retrieval system or transmitted in any form or by any means, including but not limited to electronic, mechanical, photocopying, recording or otherwise, without written permission of Automatic Transmission Service Group. This includes all text illustrations, tables and charts.

"Portions of materials contained herein have been reprinted underlicense from General Motors Corp, Service & Parts Operations."

The information and part numbers contained in this booklet havebeen carefully compiled from industry sources known for their

reliability, but ATSG does not guarantee its accuracy.

Copyright © ATSG 2004

UpdatedApril, 2004

DALE ENGLANDFIELD SERVICE CONSULTANT

ED KRUSETECHNICAL CONSULTANT

WAYNE COLONNATECHNICAL SUPERVISOR

PETER LUBANTECHNICAL CONSULTANT

JIM DIALTECHNICAL CONSULTANT

GREGORY LIPNICKTECHNICAL CONSULTANT

JERRY GOTTTECHNICAL CONSULTANT

JON GLATSTEINTECHNICAL CONSULTANT

DAVID CHALKERTECHNICAL CONSULTANT

ROLAND ALVAREZTECHNICAL CONSULTANT

MIKE SOUZATECHNICAL CONSULTANT

GERALD CAMPBELLTECHNICAL CONSULTANT

The JR403-E transmission, also known as the "Electromatic" by GM, is currently found in 1988 and up GMC Tiltmaster Trucks, Isuzu Trucks, Nissan Diesel Trucks, Mazda Trucks and Mitsubishi Trucks. This fully electronic controlled transmission is similar in design to the RE4R01A found in Nissan Pathfinders, 240SX and 300SX vehicles, but on a much larger scale. This manual contains information and procedures for assembly/disassembly, diagnosing electrical problems, and was compiled from GMC and ISUZU factory repair manuals.The JR403-E transmission is fully electronic controlled, consisting of shift solenoids, a line pressure solenoid, a converter clutch solenoid, a overrun clutch solenoid and a fluid temperature sensor. There is built into the vehicles a self diagnostic procedure to aid in diagnosing electrical concerns and is also included in this manual.

AUTOMATIC TRANSMISSION SERVICE GROUP18639 S.W. 107TH AVENUEMIAMI, FLORIDA 33157

(305) 670-4161