battery SSANGYONG KORANDO 2012 Workshop Manual

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2. OPERATING PROCESS
System diagram ▶
Operation ▶
EEM monitors the electric loads and battery conditions and controls the voltage to improve the fuel
economy and battery charging efficiency.
EBS on “-“ terminal of battery sends the battery information (voltage, current, tem
perature and
SOC) to engine ECU with LIN communication.
Engine ECU outputs the information from EBS and regulating control signal (PWM) according to the
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Engine ECU controls the magnetic resistance between stator coil and rotor coil by controlling the
current in rotor coil according to PWM duty value.
The alternating voltage induced to stator coil is converted to direct voltage by rectifier. And, EBS
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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.

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1. CAUTIONS WHEN WORKING ON ELECTRICAL UNITS
Disconnect the negative cable from the battery
in advance when working on electrical units. -
If a fuse is blown, replace it with a fuse which
has the correct amperage rating. If you use a
fuse with higher capacity than the
specification, the component can be
damaged or catch fire. -Do not drop or appy excessive impact to
sensors and relays. -
80℃
10 A 15 A
Make sure to turn "OFF" the ignition switch
and other lamp switches before disconnecting
or connecting the negative battery cable.
(Otherwise, semiconductor parts can be
damaged.)

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(5) Horn relay
The power for the theft deterrent horn relay is supplied to the ICM terminal no. C5 through the battery
SB1 and fuse no. 45 in the interior fuse box.
The relay is operated by the signals from the BCM terminal no. A24. Refer to Conditions For Theft
Deterrent for operating conditions.
(6) Tailgate relay
The power for the tailgate relay is supplied to the ICM terminals no. C10 and no. B5 through the battery
SB1 and fuse no. 42 in the interior fuse box. The relay is operated (i.e. ON/OFF) by the operation signal
from the BCM terminal no. D6.
Deactivation condition ▶
Without SKM
The tailgate open relay is turned OFF immediately after the driver's door is locked or the vehicle
speed becomes 3 km/h or more during its activation.
With SKM
Refer to the section Tailgate of BCM for the operating conditions. -
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(7) Shift lock relay
The shift lock relay is used in the models with A/T and receives power through the SB2 and fuse no. 31
in the interior fuse box with the IGN1 turned ON. If the operating conditions are met (stop lamp switch
ON), the battery power is supplied to the ICM terminal no. C1. If the gear mode conditions are met, the
relay is operated by the signals from the terminal no. 10 of the gear selector lever.
(8) Power outlet relay
The power for the power outlet relay is supplied to the ICM terminal no. B10 through the battery SB1
and fuse no. 46 in the interior fuse box. The relay is earthed through the fuse no. 47 in the interior fuse
box and then ICM terminals no. B2 and no. B12 when the ignition key is turned to ACC.

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8) Key Hole Illumination
When opening the door with IGN OFF, the key hole lamp comes on.
When closing the door, the key hole lamp stays on for 10 seconds and goes off.
When turning the ignition switch to ON position during the operation of key hole illumination, it goes of
f
immediately.
When receiving the door lock signal (entering into theft deterrent mode), the lamp goes off.
The key hole illumination function has a priority over the immobilizer function.
If the communication with the immobilizer is interrupted, the lamp comes on for 11 seconds with the
interval of 0.5s ON/0.5s OFF regardless of the operating conditions of key hole lamp.
When turning the ignition switch to ON position in "Virgin" condition, the lamp comes on for 8 seconds
with the interval of 0.5s ON/0.5s OFF. 1.
2.
3.
4.
5.
6.
(*1) ON: IGN ON
OFF: IGN OFF(*2) Open: driver or passenger door is open
Close: driver and passenger door are closed
Room lamp OFF control ▶
The room lamps stop operating when the BCM enters into the theft deterrent or sleep mode. (This is
to prevent battery discharge if the overhead room lamp and sensor room lamp switch is ON position.)
The room lamps go off automatically 10 minutes after the key is removed. After that, if the door unlock
or all door open signal is received and the key is inserted, the sleep mode is deactivated and the room
lamps operate for another 10 minutes.
The room lamps come on when the key is inserted (BCM without SKM) or the ignition switch is turned
to "ACC" or "ON" position (BCM with SKM) while the room lamps are OFF. 1.
2.
3.

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11) Door Lock/Unlock Control
The BCM with SKM receives wake-up source for driver door lock/unlock switch, passenger door
lock/unlock switch, rear door (left/right) lock switch, central door lock/unlock switch status through the
electric wire (hardwire).
Door lock/unlock control by door LOCK switch ▶
When moving the driver or passenger door lock (knob) switch to LOCK from UNLOCK position, BCM
sends the LOCK signal for 0.5 seconds.
When moving the driver or passenger door lock (knob) switch to UNLOCK from LOCK position, BCM
(UNLOCK) operation by the door lock (knob) switch is not available when sending the LOCK
(UNLOCK) signal by any other method such as remote control key.
When reconnecting the battery, the door lock (knob) switch is not operational regardless of the door
lock switch positions.
All doors stay unlocked when receiving the door lock signal in 0.5 seconds after closing the doors. 1.
2.
3.
4.
5.The status for key cylinder switch and latch position switch is received through the door lock/unlock
switch.
When door lock signal is outputted due to failure of the door knob switch and door open switch and
automatic unlock signal is transmitted 5 times for 1 minute, BCM forcibly lock the doors without
unlocking.
However, door unlock command works normally and deactivates forcible unlock. -

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Auto door unlock (crash unlock) control ▶
The air bag collision signal input cannot be accepted within 7 seconds after turning the ignition key to
"ON" position.
After the 7 seconds, the air bag signal is activated. If the air bag signal is turned ON (crash) from OFF,
BCM sends the door unlock signal for 5 seconds after 0.04 seconds.
The unlock signal is sent for the remaining of the period even when turning OFF the ignition switch
while receiving the unlock signal due to the crash.
The room lamps come ON when receiving the crash signal. (except when the front room lamp switch
is in OFF position.)
The turn signal lamps also blink when receiving the crash signal.
This function is reset when disconnecting the battery. 1.
2.
3.
4.
5.
6.

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Disarming by REKES remote control 2.
When unlocking the doors or turning the ignition switch to ON position.
When receiving the door unlock signal in theft deterrent mode, all doors are unlocked and the turn
signal lamps blink once (the horn does not sound).
When receiving the door unlock signal with the theft deterrent mode disarmed, the turn signal
lamps blink once (the horn does not sound). -
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In theft deterrent mode
BCM observes the conditions below continuously: 3.
Battery connection (B+)
Front/rear door open
Tailgate open
4 doors lock/unlock
Engine hood open -
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Activation of theft deterrent alarm 4.
When any of doors, tailgate or engine hood is open in theft deterrent mode
When unlocking the door lock switch in theft deterrent mode
When opening a door after completion of theft deterrent alarm (for 30 seconds)
Horn and the turn signal lamps operate for 30 seconds with the interval of 0.5s ON/0.5s OFF. -
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Disarming conditions of theft deterrent mode 5.
When pressing any switch (lock, unlock, panic) on the remote control key during the theft deterrent
alarm, the alarm stops its operation.
When turning the ignition switch to ON position during the theft deterrent alarm, the alarm stops its
operation.
(For vehicle with immobilizer system, the alarm stops after completion of authorization. For vehicle
without immobilizer system, the alarm stays ON for 30 seconds)
When turning the ignition switch to ON position during the theft deterrent alarm, the alarm stops
and the theft deterrent mode is deactivated after 30 seconds (remaining time).
If there is not any disarming commend, the alarm stays ON for 30 seconds and the theft deterrent
mode continues. -
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Operation when disarming 6.
The horn and the turn signal lamps stop their operation. -

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The theft deterrent/alarm status is stored in the EEPROM, and monitoring is followed by
operation when connecting the battery. -