Yanmar 3TNV82A Industrial Engine Troubleshooting Manual
TABLE OF CONTENTS:
Yanmar 3TNV82A Industrial Engine Troubleshooting Manual
Cover........................................................................... 1 Failure Diagnosis............................................................... 3 DTCs (Diagnostic Trouble Codes) General Description............................. 5 DTC Code List............................................................... 5 Description Items........................................................... 9 Analog Input Related Failures............................................... 10 Rack position sensor.................................................... 10 Accelerator sensor...................................................... 14 Spare accelerator sensor (option)....................................... 24 Atmospheric pressure sensor (option).................................... 36 ECU Temperature Sensor.................................................. 42 Cooling water temperature sensor........................................ 47 SENSOR 5V............................................................... 55 Power supply Voltage.................................................... 58 Pulse Sensor Related Failures............................................... 62 Speed Sensor............................................................ 62 Spare speed sensor (option)............................................. 64 Engine rotational speed................................................. 66 Contact Output Related Failures............................................. 68 Rack actuator Relay..................................................... 68 Start Assist Relay...................................................... 74 CSD solenoid valve...................................................... 80 EGR valve............................................................... 86 Contact Input Related Failures..............................................102 Oil Pressure Related Failures...........................................102 Battery Charge Related Failures.........................................106 Water Temperature Switch................................................110 Air cleaner switch......................................................112 Oil-Water Separator Switch..............................................114 Actuators etc...............................................................116 Rack actuator...........................................................116 Engine..................................................................122 E-ECU Internal Errors...................................................124 CAN Communication.......................................................128 Immobilizer.............................................................130 Method and Procedure of Failure Diagnosis.......................................135 Description Items...........................................................135 E-ECU Pin Layout Diagram................................................136 How to use the 2G eco-checker harness...................................137 Analog Input Related Failures...............................................138 Rack position sensor....................................................138 Accelerator sensor......................................................142 Foot pedal..............................................................146 Spare Analog (Spare accelerator sensor, Atmospheric pressure sensor)....150 Pulse accelerator.......................................................154 ECU Temperature Sensor..................................................156 Cooling water temperature sensor........................................158 <Characteristics of cooling water temperature sensor>...................160 SENSOR 5V...............................................................162 Pulse Sensor Related Failures...............................................166 Speed Sensor............................................................166 Spare speed sensor......................................................169 Contact Output Related Failures.............................................172 RACK ACTUATOR RELAY.....................................................172 START ASSIST RELAY......................................................176 CSD Solenoid Valve Coil.................................................180 EGR valve...............................................................184 Contact Input Related Failures..............................................189 Actuator Related Failures...................................................195 Rack actuator...........................................................195 ECU Internal and Communication Errors.......................................199 ECU Internal Errors.....................................................199 Main relay..............................................................201 CAN Communication.......................................................205 Immobilizer.............................................................207 FAILURE INDICATOR LAMP FLASHING PATTERN.....................................209 Using the Failure Indicator for Failure Diagnosis...............................210 Flashing Patterns of the Failure Indicator..................................210 Factor Analysis.................................................................212 2G-Type Eco-Governor Speed-Fluctuation Factor Analysis......................212 Back Cover......................................................................222
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