HYUNDAI YANMAR ELECTRONIC CONTROL MANUAL
FOR EPA TIER3
3TNV84T-Z
4TNV84T-Z
4TNV98T-Z
4TNV98-Z(R80-7A)
4TNV98-E(R55-7A,R55W-7A)
OPTION
3TNV82A-Z
3TNV88-Z, 3TNV88-E
3TNV88-Z, 4TNV88-E

FOUND IN HYUNDAI MINI-EXCAVATOR(58TON, -7A SERIES)

SPECIFICATIONS
Specifications ................................................................................... 1-3
Outline ............................................................................................ 1-13
CONTROL SYSTEM
Precautions on the use of electronic control components................ 2-3
Engine control unit...................................................................... 2-3
Fuel injection pump .................................................................... 2-4
EGR valve .................................................................................. 2-5
Accelerator sensor...................................................................... 2-5
Relay .......................................................................................... 2-6
Service tool................................................................................. 2-6
Control scheme ................................................................................ 2-7
System outline............................................................................ 2-7
E-ECU ...................................................................................... 2-10
Electrical parts .......................................................................... 2-19
Harness .......................................................................................... 2-24
Harness design requirements................................................... 2-24
Harness clamping..................................................................... 2-25
CAN bus termination ................................................................ 2-26
Control functions ............................................................................ 2-27
Control software ....................................................................... 2-27
General..................................................................................... 2-29
Engine control - General........................................................... 2-36
Application interface outline...................................................... 2-43
Fuel injection pump ........................................................................ 2-66
EGR valve ...................................................................................... 2-67
Accelerator sensor ......................................................................... 2-68
Main relay....................................................................................... 2-70
Rack actuator relay ........................................................................ 2-70
CONTENTS
Sub relay ........................................................................................ 2-71
Starter relay.................................................................................... 2-71
Starting aid relay ............................................................................ 2-73
For 400 W air heater (glow plug).............................................. 2-73
For 500/800 W air heater ......................................................... 2-74
For 1000 W air heater .............................................................. 2-74
Coolant temperature sensors......................................................... 2-75