m_in_0024.pdf - INu221224 INTRODUCTION u2212 HOW TO...

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IN00Z47IN24INTRODUCTIONHOWTO TROUBLESHOOT ECUCONTROLLEDSYSTEMSLAND CRUISER(W/G) SUP (RM793E)HOWTOTROUBLESHOOT ECU CONTROLLED SYSTEMSGENERALINFORMATIONA largenumber of ECU controlled systems are used in the LAND CRUISER. In general, the ECU controlledsystemisconsidered to be a very intricate systemrequiring a high levelof technicalknowledge andexpertskill to troubleshoot.However, the fact is that ifyou proceed to inspect the circuitsone byone, troubleshoot-ing ofthesesystems is not complex. If you have adequate understanding of the systemand a basicknowl-edge of electricity, accurate diagnosis and necessaryrepair can be performed to locate and fixthe problem.This manual isdesigned through emphasis of the above standpoint to help service techniciansperform ac-curateandeffectivetroubleshooting, and is compiled for the following major ECU controlled systems:The troubleshootingprocedure and how to make use of it are described on the following pages.SystemPage1. Active Height Control Suspension & Skyhook Tems

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