SsangYong Stavic / SsangYong Rodius (2005 year). Service manual — part 127
DI06-34
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COOLING SYSTEM
DI ENG SM - 2004.9
PREHEATING SYSTEM DIAGRAM
Specifications
Description
Rated voltage
Operating voltage range
Operating range
Relay operating voltage
Relay releasing voltage
Relay coil resistance
Voltage drop
Parasitic current
Specification
DC 12 V
DC 8 ~ 15 V
- 40 ~ + 100°C
Over 6.5 V
Over 1.5 V
11.3
Ω
Below 150 mV at each glow plug (at 16A of current)
MAX 1mA
Coolant
temperature
sensor
DI06-35
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COOLING SYSTEM
DI ENG SM - 2004.9
Function
Preheating system controls and checks following functions and operating conditions.
Pre-Heating
• The power will be supplied to the glow plugs by ECU controls when the power is supplied to the IG terminal from
the battery and there are normal communications with ECU within 2 seconds. The surface of glow plug will be
heated up to 850°C very quickly to aid combustion by vaporizing air-fuel mixture during compression stroke.
• Preheating time is controlled by ECU.
After-heating
• When the engine is started, after-heating starts by ECU controls. The idle rpm will be increased to reduce toxic
smoke, pollutants and noises.
• After-heating time is controlled by ECU.
Checking glow plugs
• Check each glow plug for short in circuit
• Check each glow plug for open in circuit due to overvoltage
• Check glow plug for short to ground
Forceful relay shut-down
• When glow plug is shorted to ground
K-Line communication
• ECU sends the results to preheating time control relay through K-Line to start communication.
• Preheating time control relay sends messages including self-diagnosis data for glow plugs to ECU.
• Glow plug makes communication only as response to demand.
• When power is supplied, ECU starts self-diagnosis within 2 seconds.
• Under the following conditions, communication error occurs.
- When there is no response from glow plug module within 2 seconds
- When an error is detected in checksum
- Less byte is received
Error code of “P1720 - Pre heating control communication fail” will be reported.
Operating time
Pre-
heating
Coolant Temp.
Operating Time
• IG: “ON”
• B+ : below 15.2V
Release
Conditions
• After operating time elapsed
• IG: “OFF” • When engine cranking
• After engine starting
After-
heating
Glow
Indicator
-35 °C
-25 °C
-20 °C
-10 °C
0 °C
10 °C
20 °C
Coolant Temp.
Operating Time
Coolant Temp.
Operating Time
• After operating time elapsed
• Torque : 190/170 Nm
• Speed: 2100/2050 rpm
• When engine cranking
Release
Conditions
• IG: “ON”
31 sec
22 sec
19 sec
17 sec
14 sec
0 sec
0 sec
-30 °C
115 sec
-30 °C
18 sec
-20 °C
80 sec
-25 °C
16 sec
-10 °C
30 sec
-20 °C
10 sec
0 °C
19 sec
-10 °C
5 sec
10 °C
11 sec
0 °C
2 sec
20 °C
11 sec
10 °C
0 sec
35 °C
0 sec
20 °C
0 sec
Operating
Conditions
Operating
Conditions
Operating
Conditions
Release
Conditions
DI07-1
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FUEL SYSTEM
DI ENG SM - 2004.9
FUEL SYSTEM
00
SECTION DI07
Table of Contents
CAUTIONS FOR DI ENGINE . . . . . . . . . ... DI07-2
FUEL SYSTEM . . . . . . . . . . . . . . . DI07-6
Fuel injection system . . . . . . . . . . . .. DI07-6
Fuel transfer line . . . . . . . . . . . . ... DI07-12
Inlet metering valve (IMV) . . . . . . . . . . DI07-19
High fuel pressure line . . . . . . . . . . .. DI07-22
Injector . . . . . . . . . . . . . . . . .. DI07-35
REMOVAL AND INSTALLATION OF FUEL TANK . DI07-49
DI07-2
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FUEL SYSTEM
DI ENG SM - 2004.9
CAUTIONS FOR DI ENGINE
Water Separator Warning Light
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.
When the water level inside water sepa-
rator in fuel filter exceeds a certain level
(approx. 39 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.
For the draining procedures, please re-
fer to “Draining the water from fuel fil-
ter” in this section.
DI Engine
Comparatively conventional diesel engines, DI engine con-
trols the fuel injection and timing electrically, delivers high
power and reduces less emission.
System Safety Mode
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.
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