This manual covers the Yanmar TNV Series Electronic Control system, specifically designed for troubleshooting electronic control issues within a range of Yanmar engines. The TNV Series engines are known for their robust engineering and reliability, making them a trusted choice for various applications. This document focuses on the electronic control system's functionality and diagnostic procedures, providing essential information for maintaining optimal engine performance.
The purpose of this troubleshooting manual is to guide users through the identification and resolution of electronic control system faults. It details diagnostic methods, including the interpretation of Diagnostic Trouble Codes (DTCs), analysis of speed fluctuations, engine stalling, and black smoke issues. The manual covers a comprehensive list of troubleshooting areas such as analog input failures, pulse sensor issues, contact output and input malfunctions, actuator problems, and E-ECU internal and communication errors. It also explains failure indicator lamp flashing patterns and provides detailed diagnostic procedures, referencing special service tools where necessary, to ensure effective maintenance and repair.
Yanmar TNV series electronic control trouble shooting manual.
This manual covers following engine models.
3TNV82A
3TNV82A-B
3TNV84
3TNV84T
3TNV84T-B
3TNV88
3TNV88-B
3TNV88-U
4TNV84
4TNV84T
4TNV84T-Z
4TNV88
4TNV88-B
4TNV88-U
4TNV94L
4TNV98
4TNV98-Z
4TNV98-E
4TNV98T
4TNV98T-Z
4TNV106
4TNV106T
Index:
DTCs (Diagnostic Trouble Codes) General Description...1-3
DTC Code List .. 1-3
Description Items... 1-7
Analog Input Related Failures ...1-8
Pulse Sensor Related Failures ... 1-60
Contact Output Related Failures ...1-66
Contact Input Related Failures ... 1-100
Actuators etc... 1-114
E-ECU Internal and Communication Errors... 1-122
Method and Procedure of Failure Diagnosis ...1-133
Description Items...1-133
Analog Input Related Failures ...1-136
Pulse Sensor Related Failures ...1-164
Contact Output Related Failures ... 1-170
Contact Input Related Failures ... 1-187
Actuator Related Failures ...1-193
ECU Internal and Communication Errors ...1-197
FAILURE INDICATOR LAMP FLASHING PATTERN... 1-207
Using the Failure Indicator for Failure Diagnosis ...1-208
Flashing Patterns of the Failure Indicator... 1-208
Factor Analysis... 1-210
2G-Type Eco-Governor Speed-Fluctuation Factor Analysis . 1-210
2G-Type Eco-Governor Engine
Stalling/Start-Up Inability Factor Analysis... 1-213
2G-Type Eco-Governor Black Smoke Factor Analysis...1-216
Special Service Tools... 1-218
Troubleshooting By Measuring Compression Pressure ... 1-219
Compression Pressure Measurement Method...1-219
Quick Reference Table For Troubleshooting ... 1-222
Yanmar TNV series electronic control trouble shooting manual.
This manual covers following engine models.
3TNV82A
3TNV82A-B
3TNV84
3TNV84T
3TNV84T-B
3TNV88
3TNV88-B
3TNV88-U
4TNV84
4TNV84T
4TNV84T-Z
4TNV88
4TNV88-B
4TNV88-U
4TNV94L
4TNV98
4TNV98-Z
4TNV98-E
4TNV98T
4TNV98T-Z
4TNV106
4TNV106T
Index:
DTCs (Diagnostic Trouble Codes) General Description...1-3
DTC Code List .. 1-3
Description Items... 1-7
Analog Input Related Failures ...1-8
Pulse Sensor Related Failures ... 1-60
Contact Output Related Failures ...1-66
Contact Input Related Failures ... 1-100
Actuators etc... 1-114
E-ECU Internal and Communication Errors... 1-122
Method and Procedure of Failure Diagnosis ...1-133
Description Items...1-133
Analog Input Related Failures ...1-136
Pulse Sensor Related Failures ...1-164
Contact Output Related Failures ... 1-170
Contact Input Related Failures ... 1-187
Actuator Related Failures ...1-193
ECU Internal and Communication Errors ...1-197
FAILURE INDICATOR LAMP FLASHING PATTERN... 1-207
Using the Failure Indicator for Failure Diagnosis ...1-208
Flashing Patterns of the Failure Indicator... 1-208
Factor Analysis... 1-210
2G-Type Eco-Governor Speed-Fluctuation Factor Analysis . 1-210
2G-Type Eco-Governor Engine
Stalling/Start-Up Inability Factor Analysis... 1-213
2G-Type Eco-Governor Black Smoke Factor Analysis...1-216
Special Service Tools... 1-218
Troubleshooting By Measuring Compression Pressure ... 1-219
Compression Pressure Measurement Method...1-219
Quick Reference Table For Troubleshooting ... 1-222
