Главная Automobile - Toyota Toyota Sequoia - Repair manual 2005 year
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Important Points in the Customer Problem Analysis What ––––– Vehicle model, system name When ––––– Date, time, occurrence frequency Where ––––– Road conditions Under what conditions? ––––– Running conditions, driving conditions, weather conditions How did it happen? ––––– Problem symptoms (Sample) Engine control system check sheet. ENGINE CONTROL SYSTEM Check Sheet Customer’s Name Driver’s Name Data Vehicle License No. Model and Model Frame No. Engine Model Odometer Reading km Problem Symptoms Engine does Difficult to Poor Idling Poor Engine Stall Others Engine does not crank No initial combustion No complete combustion Engine cranks slowly Other Incorrect first idle Idling rpm is abnormal High ( rpm) Low ( rpm) Rough idling Other Hesitation Back fire Muffler explosion (after–fire) Surging Knocking Other Soon after starting After accelerator pedal depressed After accelerator pedal released During A/C operation Shifting from N to D Other Data Problem Constant Sometimes ( times per day/month) Inspector’s CUSTOMER PROBLEM ANALYSIS CHECK – INTRODUCTION HOW TO TROUBLESHOOT ECU CONTROLLED IN–25 25 1. CUSTOMER PROBLEM ANALYSIS In troubleshooting, the problem symptoms must be confirmed accurately and all preconceptions must be |