2023 HYUNDAI I20 alternator

4-13
04
Electric Power Steering
(EPS) warning light
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[When you set the ignition switch or
the Engine Start/Stop button to the
ON position.
- The electric powering steering
warning light illuminates for about 3
seconds and then goes off.

[Whenever there is a malfunction with
the electric power steering.
If this occurs, we recommend that
you have the vehicle inspected by a
HYUNDAI authorised repairer.
Malfunction Indicator
Lamp (MIL)
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[When you set the ignition switch or
the Engine Start/Stop button to the
ON position.
- The malfunction indicator light
illuminates for about 3 seconds and
then goes off.

[Whenever there is a malfunction with
either the emission control system or
the engine or the vehicle powertrain.
If this occurs, we recommend that
you have the vehicle inspected by a
HYUNDAI authorised repairer.
NOTICE

[Driving with the Malfunction
Indicator Lamp (MIL) on may cause
damage to the emission control
system which could affect drivability
and/or fuel economy.

[If the enhanced engine protection
system becomes activated due to
lack of engine oil, engine power
will be limited. If such condition
continues repeatedly, the
Malfunction Indicator Lamp will
illuminate.
CAUTION
If the Malfunction Indicator Lamp
(MIL) illuminates, potential catalytic
converter damage is possible which
could result in loss of engine power.
In this case, we recommend that
you have the vehicle inspected by a
HYUNDAI authorised repairer as soon
as possible.
Charging system
warning light
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When there is a malfunction with either
the alternator or electrical charging
system.

4-14
Instrument cluster
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1. Drive carefully to the nearest safe
location and stop your vehicle.
2. Turn the engine off and check the
alternator drive belt for looseness or
breakage.
If the belt is adjusted properly, there
may be a problem in the electrical
charging system.
If this occurs, we recommend that
you have the vehicle inspected by a
HYUNDAI authorised repairer as soon
as possible.
Engine oil pressure
warning light
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When the engine oil pressure is low.
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1. Drive carefully to the nearest safe
location and stop your vehicle.
2. Turn the engine off and check the
engine oil level (For more details,
refer to “Engine Oil” in chapter 9). If
the level is low, add oil as required.
If the warning light remains on after
adding oil or if oil is not available, we
recommend that you have the vehicle
inspected by a HYUNDAI authorised
repairer as soon as possible.
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NOTICE

[If the engine is not stopped
immediately after the Engine Oil
Pressure Warning Light is illuminated,
severe damage could result.

[If the warning light stays on whilst
the engine is running, it indicates
that there may be serious engine
damage or malfunction. In this case:
1. Stop the vehicle as soon as it is safe
to do so.
2. Turn off the engine and check the
oil level. If the oil level is low, fill
the engine oil to the proper level.
3. Start the engine again. If the
warning light stays on after the
engine is started, turn the engine
off immediately. In this case, we
recommend that you have the
vehicle inspected by a HYUNDAI
authorised repairer.

9-19
09
Changing the engine coolant
We recommend that coolant be changed
by an authorised HYUNDAI according to
the Maintenance Schedule.
NOTICE
Put a thick cloth or fabric around the
radiator cap before refilling the coolant
in order to prevent the coolant from
overflowing into engine parts such as
alternator.
WARNING
Do not use engine coolant or antifreeze
in the washer fluid reservoir.
Engine coolant can severely obscure
visibility when sprayed on the
windscreen and may cause loss of
vehicle control resulting in an accident.
Engine coolant may also cause damage
to paint and body trim.

9-51
09
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Fuse Name Symbol (A) Circuit Protected
ALT(180A)
[150A]Alternator, Multi Fuse - F2, Fuse - F31/F32/F33/F34/
F35/F36
MDPS
80A MDPS Unit
DCT1
40ATCM
E-CLUTCH1Electronic Clutch Module
DCT2
40A TCM
ECU1
30A E/R Junction Block (RLY.1)
IG1
30A[With Smart Key] PDM Relay Box (IG1, ACC Relay)
[W/O Smart Key] Ignition Switch
FUEL PUMP
20A E/R Junction Block (RLY.5)
BATTERY
MANAGEMENT1
15A E/R Junction Block (Fuse - F40/F43)
ECU3
15A ECM, Clutch Switch
ECU2
15A ECM
A/CON 1
10A E/R Junction Block (RLY.10)
DCT4
40A Smart Gear Actuator
CVVD
40A CVVD Actuator
IG2
30A[With Smart Key] PDM Relay Box (IG2 Relay)
[W/O Smart Key] Ignition Switch, START MTR RLY
BATT1
50AICU Junction Block (IPS1, IPS3, IPS5, IPS7, IPS8,
IPS11)
BATT3
50AICU Junction Block (Fuse - F8/F15/F21/F25/F29,
Long Term Load Latch Relay-F16/F9/F22)
DCT3
15A TCM
E-CLUTCH2Electronic Clutch Module
HORN
15A E/R Junction Block (RLY.11, RLY.12)
AMS
10A Battery Sensor
BATT2
50A ICU Junction Block (IPS2, IPS4, IPS6, IPS9, IPS10)
BATT4
50AICU Junction Block (Power Window Relay-F5/F12,
Fuse - F3/F4/F10/F11)
C/FAN
60A E/R Junction Block (RLY.2)

9-54
Maintenance
Fuse Name Symbol (A) Circuit Protected
ALT(125A)
[150A]Alternator, Multi Fuse - F2, Fuse - F31/F32/F33/F34/
F35/F36
MDPS
80A MDPS Unit
ECU1
30A E/R Junction Block (RLY.1)
IG1
30A[With Smart Key] PDM Relay Box (IG1, ACC Relay)
[W/O Smart Key] Ignition Switch
FUEL PUMP
20A E/R Junction Block (RLY.5)
ECU3
15A ECM, Clutch Switch
ECU2
15A ECM
A/CON 1
10A E/R Junction Block (RLY.8)
IG2
30A[With Smart Key] PDM Relay Box (IG2 Relay)
[W/O Smart Key] Ignition Switch, START MTR RLY
BATT1
50AICU Junction Block (IPS1, IPS3, IPS5, IPS7, IPS8,
IPS11)
BATT3
50AICU Junction Block (Fuse - F8/F15/F21/F25/F29,
Long Term Load Latch Relay-F16/F9/F22)
HORN
15A E/R Junction Block (RLY.11, RLY.12)
AMS
10A Battery Sensor
BATT2
50A ICU Junction Block (IPS2, IPS4, IPS6, IPS9, IPS10)
BATT4
50AICU Junction Block (Power Window Relay-F5/F12,
Fuse - F3/F4/F10/F11)
C/FAN
40A E/R Junction Block (RLY.9/10)
IGN COIL
20A Ignition Coil #1/#2/#3/#4
ECU5
20A ECM
ECU6
15A ECM
SENSOR 1
10AE/R Junction Block (RLY.8/9/10),
Oil Control Valve #1/#2 (Intake/Exhaust),
Purge Control Solenoid Valve
SENSOR 2
10A Oxygen Sensor (Up/Down)
RR DEFOG
40A ICU Junction Block (Rear Defogger Relay)
ABS 1
40A ESP Control Module
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9-57
09
3HWURO
Fuse Name Symbol (A) Circuit Protected
ALT(125A)
[150A]Alternator, Multi Fuse - F2, Fuse - F31/F32/F33/F34/
F35/F36
MDPS
80A MDPS Unit
ECU1
30A E/R Junction Block (RLY.1)
IG1
30A[With Smart Key] PDM Relay Box (IG1, ACC Relay)
[W/O Smart Key] Ignition Switch
FUEL PUMP
20A E/R Junction Block (RLY.5)
TCU1
15A PCM, Clutch Switch
ECU2
15A ECM/PCM
EOP
40A Electronic Oil Pump
IG2
30A[With Smart Key] PDM Relay Box (IG2 Relay)
[W/O Smart Key] Ignition Switch, START MTR RLY
BATT1
50AICU Junction Block (IPS1, IPS3, IPS5, IPS7, IPS8,
IPS11)
BATT3
50AICU Junction Block (Fuse - F8/F15/F21/F25/F29,
Long Term Load Latch Relay-F16/F9/F22)
HORN
15A E/R Junction Block (RLY.11, RLY.12)
AMS
10A Battery Sensor
BATT2
50A ICU Junction Block (IPS2, IPS4, IPS6, IPS9, IPS10)
BATT4
50AICU Junction Block (Power Window Relay-F5/F12,
Fuse - F3/F4/F10/F11)
C/FAN
40A E/R Junction Block (RLY.9/10)
IGN COIL
20A Ignition Coil #1/#2/#3/#4, Condensor
ECU5
20A ECM/PCM
ECU6
15A ECM/PCM
SENSOR 1
10AE/R Junction Block (RLY.9/10),
Oil Control Valve #1/#2 (Intake/Exhaust),
Purge Control Solenoid Valve, Variable Intake
Solenoid Valve
SENSOR 2
10A Oxygen Sensor (Up/Down)
RR DEFOG
40A ICU Junction Block (Rear Defogger Relay)