ECU SSANGYONG KORANDO 2012 Manual Online

14-18
Operation of charge warning lamp ▶
ECU checks the generating voltage from alternator and circuit conditions and sends the warning lamp ON
signal to meter cluster through CAN line.Basic control logic according to the driving conditions ▶
Engine ECU determines the engine loads according to the fuel injection volume and engine speed. It
charges the battery by increasing the generating voltage during deceleration. To improve the fuel
economy by reducing the alternator load during acceleration, engine ECU decreases the generating
voltage and consumes the battery voltage.

14-190000-00
3. CAN COMMUNICATION (Charge Warning Lamp)
Overview ▶
Meter cluster
(charge warning lamp)
The meter cluster receives the charge warning lamp ON signal from ECU through CAN line.
Charge warning lamp ON conditions
Pre-warning
When DTC related EEM set
Open or short circuit in alternator -
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Circuit diagram ▶

02-4
Make sure a connector is connected
securely. Loose connection results in
malfunction. -
When disconnecting a connector equipped with
a lock, press it down to the direction in the below
figure. -
When checking voltage or continuity of the
connector terminal with a circuit tester, connect
the tester probe to the terminal at the harness
side. For a sealed type connector, connect the
probe to the terminal through the hole in the
rubber cap of the wiring. Take care not to
damage the insulation of the wires. Insert the
probe until it contacts the terminal completely. -
When inspecting the airbag system, make sure to use a diagnostic device, not a circuit tester.

02-58410-00
2. CHECKING CABLES AND WIRES
Check for loose connection or rust.
Check terminals and wires for corrosion due to electrolyte leakage.
Check terminals and wires for open circuit.
Check the wire insulation and coat for damage, cracks or deterioration.
Check if the conductive parts of the terminals do not contact with vehicle body or other metal parts.
Check that the grounding part has continuity with mounting bolts and vehicle body.
Check that wires are properly routed.
Make sure that wires are securely fixed to avoid contact with sharp body parts and high-temperature
parts, such as the exhaust manifold and exhaust pipes.
The rotating parts, such as fan pulley and fan belt, perturbative parts and wiring should be secured
tightly at regular intervals.
Secure the wiring between the fixed parts, such as the vehicle body, and vibrating parts, such as the
engine, after slackening it slightly to prevent it from being damaged. -
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03-14
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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03-68
2. IMMOBILIZER/REMOTE CONTROL KEY CODING
1) System Overview
While the communication between BCM/SKM and ECU is based on the CAN communication, the
communication between transponder and BCM/SKM is based on LF (Low frequency) and RF (Radio
frequency). When the ignition switch is turned to ON position, the BCM checks the verified transponder
according to the immobilizer verification procedure, if correct, allows the vehicle to start the engine. The
immobilizer indicator comes on during the communication and if the verification is carried out
successfully the indicator goes off.
If there is something wrong in the system, the indicator blinks.
2) System Layout

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3) Operation of Immobilizer
When the ignition switch is turned to the ON position with REKES key, the BCM checks the crypto code
of the inserted key using the immobilizer antenna and sends whether the engine is startable or not to the
engine ECU through the CAN communication so that the engine can be started.
BCM
REKES key
Immobilizer antenna
ECUCAN line
For the vehicle with the immobilizer, there can be a problem in starting the vehicle or the system error:
When two or more immobilizer keys come into contact with (each) other(s).
When the key is close to any device sending or receiving electromagnetic fields or waves other
than Ssangyong products.
When the key is close to any electronic or electric devices such as lighting equipment, security keys
or security cards.
When the key is close to a magnetic or metal object or a battery. -
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04-6
2. INPUT/OUTPUT DIAGRAM
Major functions ▶
Passive LOCK/UNLOCK by outside door handle switch
Passive UNLOCK by tailgate open switch
Passive START by START switch
Engine ECU and High speed CAN communication
BCM, Instrument cluster and Low speed CAN communication
RF communication for REKES operation
Smart key system warning function
Smart key registration (up to 3 keys) 1.2.
3.4.
5.6.
7.8.

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SVC class instrument cluster STD class instrument cluster
(4) Illumination Mode
(5) Ambient Air Temperature Mode
The ambient air temperature is calculated and displayed.
This is displayed on both STD and SVC class, regardless of FATC type (automatic or manual).
<006d009600990047007a007d006a0047008a00930088009a009a00530047009b008f008c0047008b00990090009d008c00990047009a008c009b004700960095009300a00047009b008f008c0047009c00950090009b00470089008c009b009e008c008c00
9500470b45004700880095008b00470d910047009600950047>the DOT LCD, the ambient
temperature is displayed on the SEG LCD. -
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Function Signal Remark
Display type 3 digits LCD
Display range
Resolution1℃(1℉)
TRIP/RESET switch ▶
Press for less than 1 second: change to next mode
Press for more than 1 second:
: Enter into illumination level mode
<02e700470073008c009d008c00930047008a008f00880095008e008c009a0047008900a0004700580047009a009b008c00970047009c0097004700880095008b0047008b0096009e00950047009e008f008c0095004700970099008c009a009a0090009500
8e0047009b008f008c0047009a009e0090009b008a008f0047>for more than
1 second on consecutively illumination mode
(e.g. Level 4 → 5 → 6 → 5 → 4 → 3 → 2 → 1)
If the Trip/Reset switch is not pressed within 3 seconds after getting into the illumination mode, the
LCD changes to next mode. -
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-30℃ ~ 90℃
(-22℉~ 194℉)
-31℃ ~ -33℃
: maintain 30℃
91℃~93℃
: maintain 90℃ -
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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)