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02-278410-00
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) Outside mirror folding relay
The power for the outside mirror folding relay is supplied through the fuse no. 45 in the engine
compartment CE box and the relay is operated by the operation signals from the no. D16 and no. D17 of
the BCM.
(4) IGN1, IGN2, ACC relays
Manual operation of BCM ▶
When pressing the outside mirror folding/unfolding switch with IGN ON, the mirrors are folded or
unfolded according to the previous mirror position. If the mirror is already folded, then the mirror will be
unfolded and vise versa. This operation will be performed for T1.
For models with SKM ▶
The power supplied through the AM1 fuse goes to the ACC relay no.1 and IGN1 relay no. 1. The power
supplied through the starter motor AM2 goes to the IGN2 relay no. 1. The IGN1 and IGN2 relays are
operated by the signals from the no. A1 and no. A2 of the SKM. Refer to SKM description for operating
conditions.
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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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08-8
BCM ▶
The rain sensor detects the amount of rain drops and sends the operating request signal to the BCM,
which drives the wiper directly. At this moment, the BCM also sends the information on whether the
wiper is in operation mode or whether the multifunction wiper switch is in AUTO position to the rain
sensor.
BCM Underhood Fuse Box
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01-8
Fuse for vehicle with EPS
The vehicle with EPS has EPS fuse (80A)
mounted to the positive (+) terminal of the
battery not in the fuse box.
EPS unit
The ECU controls the electric power
steering system depending on the driving
conditions, based on the signals from the
torque and angle sensor.
HECU (Hydraulic & Electronic Control Unit)
HECU for ABS HECU for EPS
The HECU (Hydraulic & Electronic Control Unit) determines the slip conditions of vehicle wheels by
calculating each wheel's speed and the increment/decrement of speed based on the information
detected by the sensors, and controls the pumping and boosting/reducing/keeping pressure by
operating the valve and motor of HECU.
2. MOUNTING LOCATIONS (CHASSIS)
Moto
HU (Hydraulic Unit) ECU (Electronic
Control Unit) Moto
HU
(Hydraulic Unit) ECU (Electronic
Control Unit)
Motor
angle (8P)
Motor power (3P)Torque angle
sensor (8P) Battery (2P) Connector to
vehicle (8P)
Fuse for EPS
Steering wheel angle sensor (SWAS)
The steering wheel angle sensor is mounted between
the steering column and the steering column shaft. It is
commonly used by the ESP (Electronic Stability
Program) system. And it receives signals of the steering
wheel angle sensor from the ESP HECU (Hydraulic &
Electronic Control Unit).
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ECU
The ECU controls the electric
power steering system
depending on the driving
conditions, based on the
signals from the torque and
angle sensor.
2) EPS (Electric Power Steering)
Fuse
The vehicle with EPS has
EPS fuse (80A) mounted to
the positive (+) terminal of the
battery, and this fuse supplies
power to the EPS unit
directly..
Steering gear box assembly
When the driver turns the steering wheel, a torque is generated and the torque sensor and the steering
angle sensor in the EPS system detect the rotation of the steering column to run the electric motor. At
this time, the worm gear connected to the motor drives the helical gear mounted to the steering column
to generate the assist torque for the steering column. This allows the driver to operate the steering
wheel easier.
ECU
Tie rod end
Tie rod end Gear boxSteering cylinder
Steering wheel assembly
BLAC motor
Lower
shaft Column
shaft
Colum shaft assembly
The column shaft assembly consists
of BLAC motor, ECU, torque and
angle sensors. The electric power
steering (EPS) system uses the
electric motor to assist the steering
force. It functions independently
regardless of whether the engine is
running or not, unlike the existing
hydraulic power steering.
The lower shafts functions in the
same way as the hydraulic type.
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