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8410-32 ICM Box
- Deleted the hazard lamp relay and added some
relays (rear side seat warmer, blower, rear
washer/wiper)
8010-01 Instrument Cluster
- Added TPMS related warning lamp and indicator.
3. ELECTRIC SYSTEM
7010-03 Blanking Key
- Changed mechanical key design.
Page 187 of 600
Glow plug
Pre-glow control unit
3. LAYOUT OF PRE-GLOW SYSTEM
Pre-glow indicator (on instrument
cluster)Fuse
Pre-glow
Pre-glow control
signal
Ground
(D20DT: N/A)Power
B+
Pre-glow complete
signal K-LineGlow plug
terminals
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0000-00
Cylinder head cover
Low oil pressure warning lamp (on
instrument cluster)
Oil filter and oil cooler
Oil
coolerOil
filter
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0000-00
Low Oil Pressure Warning Lamp (Instrument
Cluster)
Oil Pressure SwitchCylinder Head Cover
Oil coolerOil filter
Oil Filter & Oil Cooler
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0000-00
Glow Plug
1. LAYOUT OF PRE-GLOW SYSTEM
The pre-glow system in D20DT engine has four glow plugs. And, the terminal T for pre-glow completion
signal is not used since the remote start function has been deleted.
Tightening torque
Engine ECUPre-glow Indicator
(Instrument cluster)
Ground
terminal
Pre-glow control
signal (ECU 113)IG1 power
terminal
Not available for the
vehicle without
remote start functionGlow plug
terminals
(#1~#4)
K-Line
(ECU 34)
G5 terminal
deleted
Battery
main
cable
Glow Plug Control Relay
Page 332 of 600

3. CAUTIONS FOR DI ENGINE
1) Cautions for DI Engine
This chapter describes the cautions for DI engine equipped vehicle. This includes the water separation
from engine, warning lights, symptoms when engine malfunctioning, causes and actions.
DI Engine 1.
Comparatively conventional diesel engines, DI engine controls the fuel injection and timing electrically,
delivers high power and reduces less emission..
System Safety Mode 2.
When a severe failure has been occurred in a vehicle, the system safety mode is activated to protect the
system. It reduces the driving force, restricts the engine speed (rpm) and stops engine operation. Refer
to "Diagnosis" section in this manual.
Engine CHECK Warning Lamp 3.
The Engine CHECK warning lamp on the instrument cluster comes on when the fuel or
major electronic systems of the engine are not working properly. As a result, the
Water Separator Warning Lamp 4.
When the water level inside water separator in fuel filter exceeds a certain level (approx.
45 cc), this warning light comes on and buzzer sounds.
Also, the driving force of the vehicle decreases (torque reduction). If these conditions
occur, immediately drain the water from fuel filter.
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1543-00
1. SYSTEM DESCRIPTION
1) Overview
The lubrication system supplies oil to each lubrication section to prevent friction and wear and to remove
heat from the friction part. As the engine runs, frictional heat is generated on each lubrication section. If
this condition persists, the bearing can be burned and stuck.
In other words, it creates an oil film on each sliding surface to convert solid friction to liquid friction in order
to minimize wear and prevent temperature increasing on the friction part.
For the D20DTF engine with no oil pressure switch, the engine ECU receives the low engine oil level
signal from the oil level sensor and communicates with the instrument cluster through the CAN
communication to turn on the warning lamp.
2) Components
Oil coolerOil dipstick gaugeOil pump
Oil filter moduleOil pressure switchOil pan
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1451-01
If the charge warning lamp ( ) on the instrument cluster comes on while driving, there is a
malfunction in the charge system including the battery. Therefore, carrying out the system check is
needed.
(4) Maintenance
Make sure that the battery cables are firmly connected.
If the terminals are corroded, clean them with a wire brush or sandpapers.
Always disconnect the battery cables with the ignition key removed. When disconnecting the battery
cables with the ignition key turned to ON or ACC position, several electric units can be damaged
due to sudden voltage change.
Check the battery for crack, damage or fluid leaks. Replace it if necessary.
Wipe out the battery fluid on the battery surface using a rubber glove and a clean cloth wetted with
soapy water. -
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