automatic SSANGYONG KORANDO 2012 User Guide

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1. OVERVIEW
1) System Description
The cruise control is an automatic speed control system that maintains a desired driving speed without
using the accelerator pedal.
The vehicle speed must be greater than 38 km/h to engage the cruise control. This feature is especially
useful for motorway driving.
The cruise control system is a supplementary system, which helps the driver to drive the vehicle at a
desired speed without using the accelerator pedal under the traffic condition where the vehicle-to-
vehicle distance meets the legal requirement.
Auto cruise operated ECO cruise operated

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5) ECO Cruise Control
The ECO cruise control system has nearly same functions with the auto cruise control system. It is an
automatic speed control system that maintains a desired driving speed without using the accelerator
pedal.
ECO cruise driving mode
The engine ECU controls the sharp acceleration and deceleration to improve the fuel economy.
The ECO cruise system is ready when pushing down the cruise control lever. At this moment, the
ECO indicator on the instrument cluster comes on.
The ECO cruise system operates when pulling up the cruise control lever.
To cancel the ECO cruise driving, push doen the cruise control lever. At this moment, the ECO
indicator on the instrument cluster goes off and the auto cruise starts to operate. -
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Control leverECO indicator
ON Blinking
Push down the lever O
Push down it again O

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3. ECU CONTROL
1) Functions
ECU receives and analyzes signals from various sensors and then modifies those signals into
permissible voltage levels and analyzes to control respective actuators.
ECU microprocessor calculates injection period and injection timing proper for engine piston speed and
crankshaft angle based on input data and stored specific map to control the engine power and emission
gas.
Output signal of the ECU microprocessor activates the injector solenoid valve to control the fuel injection
period and injection timing; so controls various actuators in response to engine changes.
Auxiliary function of ECU has adopted to reduce emission gas, improve fuel economy and enhance
safety, comforts and conveniences. For example, there are autocruise and immobilizer and adopted
CAN communication to exchange data among electrical systems (automatic T/M and brake system) in
the vehicle fluently. And the diagnostic tool can be used to diagnose vehicle status and defectives.
<00760097008c00990088009b00900095008e0047009b008c00940097008c00990088009b009c0099008c0047009900880095008e008c00470096008d0047006c006a007c00470090009a0047009500960099009400880093009300a000470054005b005700
47009b009600470052005f005c00b6006a004700880095008b> protected from factors like oil,
water and electromagnetism and there should be no mechanical shocks.
2) Control Functions
Controls by operating stages:
To make optimum combustion under every operating stage, ECU should calculate proper injection
volume in each stage by considering various factors.
Starting injection volume control:
During initial starting, injecting fuel volume will be calculated by function of temperature and engine
cranking speed. Starting injection continues from when the ignition switch is turned to ignition
position to till the engine reaches to allowable minimum speed.
Driving mode control:
If the vehicle runs normally, fuel injection volume will be calculated by accelerator pedal travel and
engine rpm and the drive map will be used to match the drivers inputs with optimum engine power. -
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6) Cooling Fan Control
(1) Overview of Cooling Fan and A/C Compressor
The cooling system maintains the engine temperature at an efficient level during all engine operating
conditions. The water pump draws the coolant from the radiator. The coolant then circulates through
water jackets in the engine block, the intake manifold, and the cylinder head. When the coolant reaches
the operating temperature of the thermostat, the thermostat opens. The coolant then goes back to the
radiator where it cools. The heat from automatic transaxle is also cooled down through the radiator by
circulating the oil through the oil pump. There are two cooling fans (180W+120W) in G20DF engine. ECU
controls the electric cooling fans with three cooling fan relays to improve the engine torque and air
conditioning performance.
(2) Components
Refrigerant pressure
sensorCoolant temperature
sensorG20DF Engine
ECURelay box in engine
compartment
A/C compressorCooling fan moduleT-MAP sensor

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4) Operating Process By Power Supply
(1) Rear wiper relay
(2) Rear fog lamp relay
The rear wiper motor relay is turned on when the rear wiper switch is turned on with the ignition key ON.
This relay is turned off when the rear wiper switch is turned off.
The power is supplied to the ICM no. B6 connector through the SB4 and no. 39.
The power for the rear fog lamp relay is supplied through the memory fuse in the engine compartment
CE box and fuse no. 52 in the interior IP box. This relay is controlled (ON/OFF) by the relay operation
signal which is connected to the no. A11 of the BCM.
The rear fog lamp is turned on when the rear fog lamp switch is turned on with the headlamp turned
on (i.e. IGN2 switch ON).
Turning on the rear fog lamp switch again when the relay is activated turns off the fog lamp.
The rear fog lamps do not come ON when the IGN2 switch is turned to OFF position or the light
switch is OFF.
The rear fog lamp should not automatically come on again if it has been turned off by any methods
other than the rear fog lamp switch. 1.
2.
3.
4.Operating conditions ▶

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3. MAJOR CHANGES
Emergency hazard warning flasher control
Previous Current
Operating condition
If the emergency braking signal is received, the
hazard warning flasher blinks 4 times/second for
10 seconds.
Deactivation conditions:
Returns to normal operation after blinking 4
times/second
Deactivated when hazard warning flasher
switch is pressed once during operation by
emergency braking signal 1.
2.Operating condition
If the emergency braking signal is received, the
hazard warning flasher blinks 4 times/second for
10 seconds.
Operation priority
Hazard warning flasher switch → Emergency
braking signal → Emergency hazard warning
flasher → Multi-function automatic hazard
warning flasher
Deactivation conditions:
Vehicle speed exceeds 50 km/h when
emergency braking signal is received
(activated at speed of 50km/h or less)
Vehicle speed increases more than 10 km/h
above the speed when the signal is received
during operation by emergency braking signal
Turn emergency hazard warning flasher switch
OFF during operation by emergency braking
signal
Deactivated automatically 10 seconds after if
items 2) and 3) above are not met during
operation by emergency braking signal
If multi-function automatic hazard warning
flasher signal is received during operation by
emergency braking signal, it will be overridden. 1.
2.

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Rear washer motor control ▶
When turning ON the rear washer switch with the key inserted and IGN ON, the washer fluid is
sprayed the side fascia panel.
If the front washer or automatic washer switch signal is received during the rear washer switch
operation, the washer motor stops and the front washer or automatic washer motor begins to operate. 1.
2.
When holding the front washer switch at ON position for 0.1 to 0.59 seconds during the wiper
operation by the intermittent/automatic wiper switch, the wiper will operate only once. When holding
the washer switch for more than 0.6 seconds, the wiper relay is activated 0.5 seconds after. The
wiper stops after three more wipes since that the washer switch is turned to "OFF" position. 3.

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Auto washer coupled wiper ▶
When turning ON the auto washer switch with IGN ON and intermittent/automatic wiper switch OFF,
the washer fluid is sprayed onto the windshield glass for 2 seconds and the wipers operate 4 times.
After then, additionally, the washer fluid is sprayed for 1.5 seconds and the wipers operate 3 times
again.
The auto washer switch signal is overridden during speed sensitive intermittent wiper, washer
coupled wiper or auto washer coupled wiper operation.
When turning the wiper switch to AUTO position during the operation of auto washer, the auto
washer stops its operation and the intermittent/automatic wiping mode will be started.
The front and rear washer switch signal are overridden during the operation of auto washer. 1.
2.
3.
4.

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Rain sensor coupled wiper (LIN) ▶
System layout 1.
Data recognition & operation 2.
Data recognition time
The system performs LIN communication regardless of the conditions of wiper and light switch when
the ignition switch is in ON position. If the intermittent/automatic wiper switch is in "AUTO" and the
light switch is in "AUTO" position, the wiper system operates according to the LIN data.
The data received from the rain sensor is recognized for 2 times consecutively.
Operation when recognizing data
No data: wiper low/high relay OFF
Low speed signal: low relay ON (ON for at least one cycle), but high relay OFF
High speed signal: high relay ON (ON for at least one cycle), but low relay OFF
The washer switch signal is overridden during continuous operation of the wiper.
(Washer coupled wiper function is available only during intermittent operation) -
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Power-up reminder wiper ▶
If the intermittent/automatic wiper switch is in "ON" position, the wiper motor does not operate even
when turning the ignition switch to ON from OFF position.
When turning the intermittent/automatic wiper switch to ON from OFF position with IGN ON, the wipers
operate once at low speed initially regardless of the communication with the rain sensor. After that, the
wipers operate once at low speed only when the rain sensor detects
the side fascia panel. 1.
2.