ECU Hyundai Elantra 2017 Service Manual

7-48
Maintenance
BATTERY
For best battery service
• Keep the battery securely mounted.
• Keep the battery top clean and dry.
• Keep the terminals and connec-
tions clean, tight, and coated with
petroleum jelly or terminal grease.
• Rinse any spilled electrolyte from
the battery immediately with a
solution of water and baking soda.
• If the vehicle is not going to be
used for an extended time, discon-
nect the battery cables.
Information
The battery, which is originally
installed in your vehicle, is mainte-
nance free. However, your vehicle is
equipped with a battery marked with
LOWER and UPPER on the side, you
should check the electrolyte level.
The electrolyte level should be
between the LOWER and the
UPPER. When the electrolyte level is
low, add distilled (or de-mineralized)
water. (Never add sulfuric acids or
other electrolyte).
Be careful not to spill distilled (or de-
mineralized) water over the battery
surface or other adjacent components.
Also, do not overfill the battery cells.
If not, it may corrode the battery or
other components. Finally, securely
close the cell cap. However, we recom-
mend you to contact an authorized
HYUNDAI dealer for better battery
service.
i
OAD075020
To prevent SERIOUS INJURY or
DEATH to you or bystanders,
always follow these precautions
when working near or handling
the battery:
Always read and follow
instructions carefully
when handling a battery.
Wear eye protection
designed to protect the
eyes from acid splashes.
Keep all flames, sparks,
or smoking materials
away from the battery.
Hydrogen is always
present in battery cells,
is highly combustible,
and may explode if ignit-
ed.
Keep batteries out of
reach of children.
(Continued)
WARNING

7-68
Maintenance
Engine compartment panel fuse
replacement
1. Turn the engine off and all other
switches off.
2. Turn all the switches off.
3. Remove the fuse box cover by
pressing the tap and pulling up.
4. Check the removed fuse; replace it
if it is blown. To remove or insert
the fuse, use the fuse puller in the
engine compartment fuse panel.
5. Push in a new fuse of the same
rating, and make sure it fits tightly
in the clips. If it fits loosely, we rec-
ommend that you consult an
authorized HYUNDAI dealer.After checking the fuse box in the
engine compartment, securely
install the fuse box cover. If not,
electrical failures may occur from
water leaking in.
Main fuse
If an electrical system does not oper-
ate with no blown fuse in the engine
room and inner fuse box, the main
fuse inside the battery (+) cap may
be blown.
The main fuse is heavily connected
to many other parts. In this case, we
recommend you to contact an
authorized HYUNDAI dealer.
NOTICE
OAD075025
OAD075024

Maintenance
7-80
Engine compartment main fuse panel - PCB Block (Gamma 1.6 MPI)
Fuse NameSymbolFuse ratingCircuit Protected
SNSR210APurge Control Solenoid Valve, Variable Intake Solenoid Valve,
E/R Junction Block (RLY.2, RLY.9)
ECU215A-
ECU110AECM/PCM
INJ.15AINJECTOR #1~#4
SNSR115AOxygen Sensor (Up), Oxygen Sensor (Down)
IGN.15AIgnition Coil #1~#4, Condenser
SNSR320AFuel Pump Relay, Oil Control Valve #1, Oil Control Valve #2
HORN10AHorn Relay
ECU510AECM/PCM
SNSR420A-
ABS315AABS/ESC Control Module, Multipurpose Check Connector
TCU215AVehicle Speed Sensor, Transmission Range Switch, E/R Junction Block (Fuse : F17)
ECU420AECM/PCM
ECU310AECM/PCM
F/PUMP20AFuel Pump Relay

7-81
7
Maintenance
Engine compartment main fuse panel - PCB Block (Nu 2.0 MPI)
Fuse NameSymbolFuse ratingCircuit Protected
SNSR210APurge Control Solenoid Valve, Variable Intake Solenoid Valve,
E/R Junction Block (RLY.2, RLY.9), Cold Start Solenoid Valve
ECU215APCM
ECU110A-
INJ.15AINJECTOR #1~#4
SNSR115AOxygen Sensor (Up), Oxygen Sensor (Down)
IGN.15AIgnition Coil #1~#4, Condenser
SNSR320AFuel Pump Relay, Oil Control Valve #1, Oil Control Valve #2
HORN10AHorn Relay
ECU510APCM
SNSR420A-
ABS315AABS/ESC Control Module, Multipurpose Check Connector
TCU215AVehicle Speed Sensor, Transmission Range Switch, E/R Junction Block (Fuse : F17)
ECU420APCM
ECU310APCM
F/PUMP20AFuel Pump Relay

Maintenance
7-82
Engine compartment main fuse panel - PCB Block (UII 1.6 TCI)
Fuse NameSymbolFuse ratingCircuit Protected
SNSR210AElectronic Vgt Actuator, Egr Cooling Bypass Solenoid Valve,
Stop Lamp Switch, Pm (Particulate Matter) Sensor, Fuel Pressure Regulating Valve,
Rail Pressure Regulating Valve, E/R Junction Block (RLY.2, RLY.9, RLY.5B, RLY,11B)
ECU215A-
ECU110AECM
INJ.15A-
SNSR115ALambda Sensor #1, Lambda Sensor #2
IGN.15A-
SNSR320AFuel Pump Relay, Air Flow Sensor, Camshaft Position Sensor, Oil Control Valve
HORN10AHorn Relay
ECU510AECM
SNSR420AFuel Filter Warning Sensor, Glow Relay Unit
ABS315AABS/ESC Control Module, Multipurpose Check Connector
TCU215ATCM, Transmission Range Switch

7-83
7
Maintenance
Engine compartment main fuse panel - PCB Block (UII 1.6 TCI)
Fuse NameSymbolFuse ratingCircuit Protected
ECU420A-
ECU310AECM
F/PUMP20AFuel Pump Relay