Yanmar 3TNV82A-B Service Manual page 50

GENERAL SERVICE INFORMATION
Component/Feature
Engine diagnosis tool
Engine coolant temperature sensor
Glow plugs
Air heater
After heater
Droop control
Isochronous control Standard with CL series
Low-idling speed up
High-idling speed
down
Auto deceleration
4-10
Option for service
Optional
Optional
Standard with VM series Reduces the engine speed by a certain percentage from
Optional with VM series
Optional
Optional
MAIN ELECTRONIC CONTROL COMPONENTS AND FEATURES
Allows the operator to troubleshoot the cause of a
problem based on detailed information regarding the
problem occurring in the E-ECU or Eco-governor. This
tool can also be used for data maintenance tasks
including programming and mapping.
.
Chart on page 7-113
Allows the CSD and ERG to be controlled in engine cold-
start conditions.
When the key switch is turned to the ON position, the glow
plugs/air heater are/is energized for up to 15 seconds
(glow plugs) or up to 23 seconds (air heater). The duration
of energization depends on the engine coolant
temperature. The HEAT indicator is on during
energization. When the indicator goes out, turn the key
switch to the START position to start the engine.
In extreme cold start conditions, the after heater is
energized for up to 80 seconds or until the coolant
temperature reaches 10°C after the engine has started, in
order to help ensure the engine continues to run without
stall.This option is not available for glow plug engines.
no load to full (rated) load in steady state operation. The
same percentage droop is maintained even when the load
increases at any no-load speed.
Offers a constant engine speed from no load to full load.
The engine speed does not decrease even when the load
increases at any no-load speed.
Increases the low-idling speed to up to 1000 rpm
depending on the engine coolant temperature. When the
coolant temperature reaches a predetermined value, this
feature returns the engine speed to the normal low idle
setting, thus reducing the warm-up time.
Decreases the high-idling speed depending on the engine
coolant temperature. When the coolant temperature falls
to a predetermined value, this feature returns the engine
speed to the normal high idle setting, thus minimizing the
emission of white smoke at low temperatures.
Brings the running engine in low idle mode automatically
when the accelerator pedal is not operated for a
predetermined period of time. When the pedal is
operated, i.e., the accelerator sensor is activated, the low
idle mode is cancelled.
TNV DI Service Manual
Description
See Troubleshooting