2012 SSANGYONG KORANDO ignition

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(2) Warm-up Control Function
Low voltage ▶
If low voltage is detected by the ECU, the idle speed increases up to 100 rpm selectively under the
driving mode until the ignition switch is turned off. Idle speed control ▶
The idle speed is controlled according to the fuel/air mixture when the engine load is changed, the
power steering wheel is turned to its end, the selector lever is in the "D" position and the A/C compresso
r
is in operation. It is also controlled according to the charge level during the purge control operation.
Ignition timing ▶
The idle speed is controlled according to the fuel/air mixture when the engine load is changed, The
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8c008b0047009c00970047009b0096004700590057020b0047>to help idle speed control.
Air conditioner compressor operation ▶
The air conditioner control unit sends the air conditioner operation signal to the ECU to increase the
throttle valve opening amount in order to prevent reduction of the engine speed when the air conditioner
compressor is in operation at idling.
(3) Warm-up Control Operating Conditions
To make the catalytic converter reach a operating temperature, the ignition timing is retarded for about
20 seconds under the following conditions:
The coolant temperature is 15°C ~ 40°C when the engine is started.
The selector lever is in the "P" or "N" position. ▶
▶
Also, the idle speed increases to 1100 ~ 1500 rpm simultaneously by the idle speed control. However, as
soon as the selector lever is shifted to the D position, warming up control of the catalytic converter will be
inhibited. The information necessary to perform such control is as follows:
Coolant temperature
Engine rpm
Intake air mass
Recognizing idling status
Selector lever position ▶
▶
▶
▶
▶

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7) Immobilizer Control
(1) Overview
The Immobilizer System provides an additional theft deterrent to the vehicle in which it is installed and
prevents it from being started by unauthorized persons. The transponder integrated in the key and the
engine control unit have the same code. When the ignition key with the integrated transponder is turned
to the ON position, the ECU (Engine Control Unit) checks the crypto code of the key and, if correct,
allows the vehicle to start the engine.
For details, refer to Chapter "BCM".
(2) Components
Conditions for cooling fan ▶
Immobilizer
antenna
Immobilizer
key
Start motor
Instrument
cluster
BCM
G20DF ECU

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Key approval process ▶
When turning the ignition switch to ON position, the power is supplied to BCM and ECU. ECU
communicate with the immobilizer key to check if it is valid crypto code. If it is valid, ECU start to control
the engine when turning the ignition switch to START position.
The system has 10 seconds of valid time-out period. If the engine does not start in this period, the key
approval process should be done again.

02-8
Swirl control valve
It operates variably in accordance with the
engine load and rpm.
Refer to Chapter “Engine Control”.
Intake manifold
It is the passage for intake air when the swirl
vale is operating. The T-MAP sensor for
measuring the pressure and temperature of
pressurized air in turbocharger is installed on
the left top of intake manifold.
3. LAYOUT OF INTAKE SYSTEM
1) Overview
The intake system for D20DTF(Low CO2) engine is equipped with a throttle body which includes a flap.
This flap is controlled by an electrical signal to cut off the intake air entering to the engine when the
ignition switch is turned off. The intake manifold contains the swirl control valve and dual port system to
make the optimum turbulence. The T-MAP sensor is located on the left top of the intake manifold and
the HFM sensor for precise control is located at the rear side of air cleaner. To reduce the intake noise
and to improve the intake efficiency, the volume of air cleaner has been increased.
2) Components
Electric throttle body
Refer to Chapter “Engine Control”.

14-6
Measuring at (-) wiring ▶
Measure the voltage between battery wiring
and body ground. -
Specified valuebelow 0.3V
If the voltage is out of the specified value,
check the wiring mounting bolt for corrosion
and looseness. If there is a poor contact due
to corrosion or paint, wipe out the contact area
and retighten it.
Wiring mounting bolt to body
ground (-): 17 Nm
Measuring the battery voltage ▶
Stop the engine and wait for 20 minutes.
Measure the voltage between terminal (+)
and terminal (-) with the ignition switch OFF
and all electric devices OFF. -
Specified valueover 12V

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Inspection ▶
Start the engine and turns on the headlamp, blower and heated wire at their full load. Then, measure
the maximum output current (MSM measurement value) when racing the engine to 2,700 rpm. 1.
Specified value60% of rated current (limit)
Turn the ignition OFF after inspection.
Disconnect the negative cable from the battery and remove the testers (ammeter and
voltmeter). 2.
3.
Characteristic curve (output from alternator) ▶
The output current may not reach the limit value due to various parameters (high temperature or
electric load etc.). Thus, do not perform the inspection with fully charged battery.

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5. INSPECTION - REGULATING VOLTAGE
Perform the basic inspection. -
Setting up the testers ▶
Preparation ▶
Set up the ammeter and voltmeter as shown
in the figure. 1.
Inspection ▶
Turn the ignition ON and measure the voltage on the voltmeter. 1.
Start the engine and turn all electric devices OFF.
Increase the engine speed to 2,700 rpm and maintain the speed. Measure the voltage when the
output current from alternator decrease below 30A. 2.
3.
Specified valueover 12V
Specified value11.5 ~ 15.5V
Make sure to set up the tester while keeping
its polarity.

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8. DTC SETTING CONDITIONS
Charge warning lamp ON condition ▶
Turn the ignition ON (Engine stopped)
Open or short circuit of L terminal wiring, open or short internal circuit of alternator (fixed control of
13.8V)
Open or short circuit of F terminal wiring, no feedback output signal 1.
2.
3.