Auto cruise SSANGYONG KORANDO 2012 Service Manual

12-38530-00
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. -
-
-
-
Control leverECO indicator
ON Blinking
Push down the lever O
Push down it again O

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2) ECU Control
(1) Function
a. ECU Function
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 drives pressure control valve to control the rail pressure and
activates 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 EGR, booster pressure control, autocruise (export only) and immobilizer and adopted CAN
communication to exchange data among electrical systems (automatic T/M and brake system) in the
vehicle fluently. And Scanner 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.
To control the fuel volume precisely under repeated injections, high current should be applied instantly
so there is injector drive circuit in the ECU to generate necessary current during injector drive stages.
Current control circuit divides current applying time (injection time) into full-in-current-phase and hold-
current-phase and then the injectors should work very correctly under every working condition.
b. Control Function
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. -
-
-

01-12
4. CODING AND SETUP
1) Engine Variant Coding
Description Coding
Vehicle speed input to ECUCAN
with ABS or ESP: CAN
WIRE
Fan3 Relays
3 Relays
PWM fan
Auto cruiseNO
with Auto cruise system: YES
YES
Engine level controlNO
without Engine level control system: NO
(Korando)
YES
G-sensorNO
with 2WD ABS and non-ABS: NO
with 4WD ABS and ESP: YES
YES
Smart keyNO
with Smart key: YES
YES

12-38530-00
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

12-118530-00
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. -
-
-
-
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. -
-
-

05-158010-01
Indicator
(green)
Hazard indicator ▶
ECO indicator ▶
Cruise control indicator ▶
Indicator
(red)
Indicator
(green)
Indicator
(green)
4WD LOCK indicator ▶
Indicator
(red)
4WD check warning lamp ▶This indicator comes on when the cruise control system is activated.
This indicator goes off when the brake pedal is depressed. (auto cruise
deactivated)
This warning lamp comes on when the 4WD LOCK switch is pressed.
This indicator goes off when pressing the switch again.
This warning lamp comes on when the 4WD system is defective. This indicator comes on when the hazard warning flashers are switched on.
(applies to STD class)
This indicator comes on when the ECO cruise system is activated.
This indicator goes off when the brake pedal is depressed. (ECO
deactivated)

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3) Cruise Control Switch
Cruise control switch
The cruise control is an automatic speed control system that maintains a desired driving speed without
using the accelerator pedal. The cruise control switch is fitted to the bottom right section of the steering
wheel. When this switch is operated, the AUTO CRUISE or ECO lamp on the instrument cluster comes
on.
The cruise control switch has a fivefold switch in it. The engine ECU can determine the current driving
condition since the resistance varies depending on the operation of the switch.
The cruise control system is operated at vehicle speed of between 38 km/h and 150 km/h. The manual
transmission is operated in the range of 3rd gear or higher.
This function can be used at the following traffic condition. (It is important to be careful for using this
function)
Cruise control (ON)
Cruise control (OFF)
Cruise control (Acceleration)Cruise control (Deceleration)
Cruise control (Reset)

02-16
3) Shift Map Selection
The driver can manually select between normal (S) and winter modes (W) via the mode switch.
Depending on the transaxle temperature, uphill and downhill grades and altitude, shift maps will be
selected by the TCU to suit the driving conditions. The following maps are available.
Standard (Normal) Mode ▶
Normal Mode is selected when the lever is in the D position with the mode switch in the normal (S)
position and the transaxle is within normal temperature ranges. Shift schedule points are optimised for
fuel efficiency and general driving conditions.
Uphill and Downhill Mode ▶
In this mode, depending on the load of the vehicle, adaptive shift maps are selected to progressively
adjust the shift points and torque converter lock points.
Altitude Mode ▶
Shift points are automatically adjusted at higher altitudes to compensate for changes in engine torque
where the torque produced by the engine is greatly reduced by the effects of reduced barometric
pressure and temperature.
Winter (W) Mode ▶
When winter mode is selected, starting in second gear is facilitated and the WINTER mode indicator
light is switched ON. To prevent wheel spin on slippery surfaces, the transmission will not allow first gear
unless manually overridden.
Warm up Schedule ▶
<007c009a008c008b0047009b00a000970090008a00880093009300a00047009e008f008c00950047009b009900880095009a0088009f0093008c0047008d0093009c0090008b0047009b008c00940097008c00990088009b009c0099008c00470090009a00
470089008c00930096009e00470059005700b6006a0055>
The torque converter will not lock-up below 20°C to assist in transaxle warm-up.
Hot Mode ▶
<007b008f008c0047008f0096009b004700940096008b008c00470090009a0047009700990096008e0099008c009a009a0090009d008c009300a0004700880097009700930090008c008b00470089008c009b009e008c008c00950047009b008c0094009700
8c00990088009b009c0099008c009a00470096008d00470058>10° ~ 200°C. The torque
converter lock-up is increased to prevent heat generation by the torque converter.
Activation of the hot mode inhibits other transmission performance features including uphill and downhill
compensation and altitude compensation. Some degradation in shift feel may be experienced as the
torque converter is not unlocked during shifting.
Cruise Control Mode ▶
When cruise control is activated the engine ECU may request the transaxle to downshift under trailing
throttle conditions to increase engine braking.
Above 110℃the electrical radiator fans are switch ON
Above 130℃the engine torque will be reduced and the W light on the instrument cluster will flash
Above 200℃the transaxle will neutralise until the fluid tem
perature falls below 200°C as a final
protection.