Installation Manual

Electrical & Electronic Application And Installation Manual
Production Release Version 1.0
Page 159
Figure 12.1 ECM Start Aid Control
Start Aid Control
Engine Coolant Temperature Sensor
Intake Manifold air temperature
Key ON
N
Coolant Temp
Intake Temp
T
i
m
e
ECM activates
Wait to
Start Lamp
and Glow Plugs
for period
determined from
Pre-heat map
N
Engine speed >= to
low idle -200 rpm?
ECM activates
Glow Plugs for
Post-start period
of 15 seconds
Start Aid End
Pre-heat map
ECM selects
coldest
temperature
Y
ECM activates
Glow Plugs during
cranking for
maximum of 10 sec
The operator should wait
until after the Pre-heat period
before cranking. The Glow
Plugs will remain off after the
Pre-heat period until the
engine is cranked
N
Operator crank
engine when lamp
turns off
No Start Aid required
Typical Values (May Vary)
Air Inlet Temperature
Temperature
<= +5 degC ?
Temperature
<=-25 degC?
Operator Cranks
the Engine
Engine ECM
Initiates Ether
dosing
ECM activates
Ether for Post
engine start
duration
Engine Speed within
50rpm of LI
?
?
Typical Values (May Vary) Not yet
defined!
T
i
m
e
Y
Y
N