fuel GENESIS G90 2023 Service Manual

9-54
Maintenance
Engine compartment fuse panel
Type Fuse NameFuse
RatingCircuit Protected
MAINALT225A Alternator
MDPS1125A MDPS Unit
e-S/C125A[Mild HEV] Electric Super Charging Unit
(Power)
MULTICOOLING FAN100A Colling Fan Motor
IEB160A IEB Unit
IEB260A IEB Unit
AIR SUSPENSION
(ECS)50A Air Suspension (ECS) Relay
REAR HEATED150A Rear Heated #1 Relay
REAR HEATED240A Rear Heated #2 Relay
WIPER30A Wiper Motor
SBEOP30A Electronic Oil Pump
HEAD LAMP RH40A Head Lamp RH
HEAD LAMP LH40A Head Lamp LH
START30A Start Relay
MICROHORN15A PCB Block (Horn Relay)
A/C115A A/C Relay
ECU115A ECM
TCU120A TCM
FUEL PUMP20A Fuel Pump Relay
4WD20A AWD ECU

9-55
09
Engine compartment fuse panel
Fuse NameFuse
RatingCircuit Protected
IG130A IG1 Relay
ECU330A Engine Control Relay
IG230A IG2 Relay
ACC30A ACC Relay
ECU210A ECM
EWP20A Electronic Water Pump
MODULE110A Front Radar, Front Corner Radar LH/RH
MDPS210A MDPS Unit
IEB310A IEB Unit
TCU215A TCM, P/N Relay, Electronic Oil Pump
SENSOR310A Oxygen Sensor #1 (B1/S1), Oxygen Sensor #2 (B2/S1)
SENSOR210AOxygen Sensor #3 (B1/S2), Oxygen Sensor #4 (B2/S2),
Purge Control Solenoid Valve, Oil Pump Solenoid Valve,
Canister Close Valve, Oil Control Valve (Intake #1/#2), Oil
Control Valve (Exhaust #1/#2), RCV Control Solenoid Valve
#1/#2, E/R Junction Block (A/C Relay)
SENSOR110AE/R Junction Block (Fuel Pump Relay), Injector
#1/#2/#3/#4/#5/#6 (MPI)
IGN COIL15A Ignition Coil #1/#2/#3/#4/#5/#6
SENSOR415A Cooling Fan Motor, Electric Super Charging Unit (Signal)
ECU420A ECM
WASHER15A WASHER RELAY
MHSG10A[With Mild HEV] Mild Hybrid Starter & Generator Motor
(Signal)

9-61
09
Battery junction block
Fuse Name Fuse Rating Circuit Protected
LDC225A[Mild HEV] Battery System Assembly (Low DC-DC
Converter)
AMS10A 12V Battery Sensor
B+6100ARear Junction Block (Fuse - P/WINDOW (RH), BATTERY C/
FAN, P/SEAT (RR RH)1, P/SEAT (RR RH)2, S/HEATER (RR
RH), POWER TRUNK, RR DR CURTAIN, B+1)
B+560AICU Junction Block (Fuse - P/SEAT (PASS)1, P/SEAT
(PASS)2, MASSAGE SEAT (FRT), ADAS DRV1, S/HEATER
(PASS), CURTAIN, SUNROOF2, MODULE14)
B+460AICU Junction Block (Fuse - SBCM (DRV), SBCM (RR LH),
SUNROOF1, P/SEAT (DRV)1, P/SEAT (DRV)2, POWER
HANDLE, S/HEATER (DRV), P/WINDOW (LH))
B+8100ARear Junction Block (LDC, Fuse - PRESAFETY SEAT
BELT2, ECS1, ECS2, PRESAFETY SEAT BELT3, BATTERY
MANAGEMENT)
B+7100ARear Junction Block (Fuse -SBCM (PASS), SBCM (RR RH),
P/SEAT (RR LH)1, P/SEAT (RR LH)2, S/HEATER (RR LH),
MASSAGE SEAT (RR), BLOWER (RR), MODULE18, B+2, B+3)
RWS100A RWS Module
B+9125AE/R Junction Block (Fuse - HEAD LAMP LH, START, TCU1,
4WD, HEAD LAMP RH, ECU1, FUEL PUMP, ECU3)

9-70
Maintenance
Bright-metal maintenance

[To remove road tar and insects, use
a tar remover, not a scraper or other
sharp object.

[To protect the surfaces of brightmetal
parts from corrosion, apply a coating
of wax or chrome preservative and rub
to a high luster.

[During winter weather or in coastal
areas, cover the bright metal parts
with a heavier coating of wax or
preservative. If necessary, coat the
parts with non-corrosive petroleum
jelly or other protective compound.
Underbody maintenance
Corrosive materials used for ice and
snow removal and dust control may
collect on the underbody. If these
materials are not removed, accelerated
rusting can occur on underbody parts
such as the fuel lines, frame, floor pan
and exhaust system, even though they
have been treated with rust protection.
Thoroughly flush the vehicle underbody
and wheel openings with lukewarm or
cold water once a month, after off-road
driving and at the end of each winter.
Pay special attention to these areas
because it will do more harm than good
if the road grime becomes wet without
removing it. The lower edges of doors,
rocker panels, and frame members have
drain holes that should not be allowed
to clog with dirt; trapped water in these
areas can cause rusting.
WARNING
After washing the vehicle, test the
brakes while driving slowly to see if
they have been affected by water. If
braking performance is impaired, dry
the brakes by applying them lightly
while maintaining a slow forward
speed.
Aluminum wheel maintenance
The aluminum wheels are coated with a
clear protective finish.

[Do not use abrasive cleaner, polishing
compound, solvent, or wire brushes
on aluminum wheels.

[Clean the wheel when it has cooled.

[Use only a mild soap or neutral
detergent, and rinse thoroughly with
water. Also, clean the wheels after
driving on salted roads.

[Do not wash the wheels with high-
speed car wash brushes.

[Do not use any cleaners containing
acid or alkaline detergents.
Corrosion protection
Protecting your vehicle from corrosion
By using the most advanced design
and construction practices to combat
corrosion, Genesis Branded Vehicle
produces vehicles of the highest quality.
However, this is only part of the job.
To achieve the long-term corrosion
resistance, the owner’s cooperation and
assistance is also required.
Common causes of corrosion
The most common causes of corrosion
on your vehicle are:

[Road salt, dirt and moisture that is
allowed to accumulate underneath
the vehicle.

[Removal of paint or protective
coatings by stones, gravel, abrasion
or minor scrapes and dents which
leave unprotected metal exposed to
corrosion.

9-76
Maintenance
The emission control system of your
vehicle is covered by a written limited
warranty. Please see the warranty
information contained in the Owner’s
Handbook & Warranty Information
booklet in your vehicle.
Your vehicle is equipped with an
emission control system to meet all
applicable emission regulations. There
are three emission control systems, as
follows.
(1) Crankcase emission control system
(2) Evaporative emission control system
(3) Exhaust emission control system
In order to ensure the proper function
of the emission control systems, it
is recommended that you have your
vehicle inspected and maintained by an
authorized retailer of Genesis Branded
products in accordance with the
maintenance schedule in this manual.
NOTICE
For the Inspection and Maintenance
Test (with Electronic Stability Control
(ESC) system)

[To prevent the vehicle from misfiring
during dynamometer testing, turn
the Electronic Stability Control
(ESC) system off by pressing the ESC
switch (ESC OFF light illuminated).

[After dynamometer testing is
completed, turn the ESC system back
on by pressing the ESC switch again.
1. Crankcase Emission Control
System
The positive crankcase ventilation system
is employed to prevent air pollution
caused by blow-by gases being emitted
from the crankcase. This system supplies
fresh filtered air to the crankcase through
the air intake hose. Inside the crankcase,
the fresh air mixes with blow-by gases,
which then pass through the PCV valve
into the induction system.
2. Evaporative Emission Control
System Including Onboard
Refueling Vapor Recovery
(ORVR)
The Evaporative Emission Control System
is designed to prevent fuel vapors from
escaping into the atmosphere. The
ORVR system is designed to allow the
vapors from the fuel tank to be loaded
into a canister while refueling at the gas
station, preventing the escape of fuel
vapors into the atmosphere.
Canister
Fuel vapors generated inside the fuel
tank are absorbed and stored in the
onboard canister. When the engine is
running, the fuel vapors absorbed in the
canister are drawn into the surge tank
through the purge control solenoid valve.
Purge Control Solenoid Valve (PCSV)
The purge control solenoid valve
is controlled by the Engine Control
Module (ECM); when the engine coolant
temperature is low during idling, the
PCSV closes so that evaporated fuel
is not taken into the engine. After the
engine warms-up during ordinary
driving, the PCSV opens to introduce
evaporated fuel to the engine.
EMISSION CONTROL SYSTEM

9-78
Maintenance
Operating precautions for catalytic
converters
WARNING
The exhaust system and catalytic
system are very hot while the engine is
running or immediately after the engine
is turned off. To avoid SERIOUS INJURY
or DEATH:

[Do not park, idle, or drive the vehicle
over or near flammable objects, such
as grass, vegetation, paper, leaves,
etc. A hot exhaust system can ignite
flammable items under your vehicle.

[Keep away from the exhaust system
and catalytic converter or you may
get burned.
Also, do not remove the heat sink
around the exhaust system, do not
seal the bottom of the vehicle, and
do not coat the vehicle for corrosion
control. It may present a fire risk
under certain conditions.
Your vehicle is equipped with a catalytic
converter emission control device.
To prevent damage to the catalytic
converter and to your vehicle, take the
following precautions:

[Use only UNLEADED FUEL for
gasoline engines.

[Do not operate the vehicle when
there are signs of engine malfunction,
such as misfire or a noticeable loss of
performance.

[Do not misuse or abuse the engine.
Examples of misuse are coasting with
the engine off and descending steep
grades in gear with the engine off.

[Do not operate the engine at high idle
speed for extended periods
(5 minutes or more).

[Do not modify or tamper with any
part of the engine or emission
control system. All inspections and
adjustments must be made by an
authorized retailer of Genesis Branded
products.

[Avoid driving with an extremely low
fuel level.
Running out of fuel could cause the
engine to misfire, damaging the
catalytic converter.
CALIFORNIA PERCHLORATE
NOTICE
Perchlorate Material-special handling
may apply, See: https://dtsc.ca.gov/
perchlorate.
Notice to California Vehicle Dismantlers:
Perchlorate containing materials, such as
air bag inflators, seatbelt pretensioners
and keyless remote entry batteries, must
be disposed of according to Title 22
California Code of Regulations Section
67384.10 (a).