ECU GENESIS G90 2021 Service Manual

6-24
What to do in an emergency
Removable Towing Hook
1. Open the tailgate, and remove the
towing hook from the tool case.
2. Remove the hole cover pressing
the lower part of the cover on the
front or rear bumper.
3. Install the towing hook by turning it
clockwise into the hole until it is
fully secured.
4. Remove the towing hook and
install the cover after use.
Emergency Towing
If towing is necessary, we recommend
you have it done by an authorized
retailer of Genesis Branded products
or a commercial tow truck service.
If a towing service is not available in
an emergency, your vehicle may be
temporarily towed using a cable or
chain secured to the emergency tow-
ing hook at the front (or rear) of the
vehicle.
Use extreme caution when towing
the vehicle with a cable or chain. A
driver must be in the vehicle to steer
it and operate the brakes.
Towing in this manner may be done
only on hard-surfaced roads for a
short distance and at low speeds.
Also, the wheels, axles, power train,
steering and brakes must all be in
good condition.
OHI069020N
■ Front
OHI068021
■ Rear
OHI069022N
■ Front
OHI068023
■ Rear

6-25
06
Always follow these emergency tow-
ing precautions:
• Place the shift lever in N (Neutral).
• Release the parking brake.
• Depress the brake pedal with more
force than normal as you will have
reduced braking performance.
• More steering effort will be
required because the power steer-
ing system will be disabled.
• Use a vehicle heavier than your
own to tow your vehicle.
• The drivers of both vehicles should
communicate with each other fre-
quently.
• Before emergency towing, check
that the hook is not broken or dam-
aged.
• Fasten the towing cable or chain
securely to the hook.
• Do not jerk the hook. Apply steady
and even force.• Use a towing cable or chain less
than 16 feet (5 m) long. Attach a
white or red cloth (about 12 inch
(30 cm) wide) in the middle of the
cable or chain for easy visibility.
• Drive carefully so the towing cable
or chain remains tight during tow-
ing.
• Before towing, check the automat-
ic transmission for fluid leaks under
your vehicle. If the automatic trans-
mission fluid is leaking, flatbed
equipment or a towing dolly must
be used.OHI068024
The driver must be in the vehi-
cle for steering and braking
operations when the vehicle is
being towed. Passengers other
than the driver must not be in
the vehicle.
CAUTION

7-34
Maintenance
Battery Usage
Recommendations
• Keep the battery securely mount-
ed.
• 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 acid from the bat-
tery immediately with a solution of
water and baking soda.
Battery Replacement
When replacing the battery, discon-
nect the negative (-) cable (1) and
remove the positive (+) battery fuse
box (2). Remove the battery hold
down mounting bracket (3).
OHI078090L
■Trunk
OHI078088L
OHI078089L

7-55
07
After checking the fuse box in the
engine compartment securely
close the fuse box cover inside
the engine compartment, until it
clicks.
If the fuse box is not closed prop-
erly, water may leak in side, possi-
bly causing a malfunction with the
electrical system.
Main fuse
If the main fuse is blown, it must be
removed as follows:
1. Turn off the engine.
2. Disconnect the negative battery
cable.
3. Remove the fuse panel cover by
pressing the tab and pulling it up.
4. Remove the nuts shown in the pic-
ture above.
5. Replace the fuse with a new one
of the same rating.
6. Reinstall in the reverse order of
removal.
Information
If the main fuse is blown, consult an
authorized retailer of Genesis Branded
products.
Multi fuse
If the multi fuse is blown, it must be
removed as follows:
1. Turn off the engine.
2. Disconnect the negative battery
cable.
3. Remove the fuse panel cover by
pressing the tab and pulling it up.
4. Remove the nuts shown in the pic-
ture above.
5. Replace the fuse with a new one
of the same rating.
6. Reinstall in the reverse order of
removal.
Information
If the multi fuse is blown, consult an
authorized retailer of Genesis Branded
products.
i
i
NOTICE
OHI078026
OHI078027

7-57
07
Instrument panel fuse panel
Fuse name Fuse rating Circuit protected
MODULE5 10AStop Lamp Switch, Driver/Passenger Door Module
MODULE7 10A
Electro Chromic Mirror, A/V & Navigation Head Unit, AMP,
A/C Control Module, Front A/C Controller, Air Quality
Sensor, Rear Seat Warmer Control Module LH/RH,
Driver/Passenger CCS Module, Rear CCS Module LH/RH,
Parking Collision Avoidance Assist Unit, Driver/Passenger
IMS Control Module, Rear IMS Control Module LH/RH, Rear
Seat Console Switch, Driver/Passenger Seat Warmer
Control Module
IBU3 10AIBU Control Module
E-SHIFTER2 10AElectronic ATM Shift Lever
MEMORY1 10A
Security Indicator, A/C Control Module, Front A/C Controller,
Instrument Cluster, Driver/Passenger IMS Control Module,
Rear IMS Control Module LH/RH, Head-Up Display, Analog
Clock, Driver/Passenger Seat Control Switch, Power Trunk
Module, Rear Seat Control Switch LH/RH, Driver/Passenger
Smart Key Outside Handle, Rear Smart Key Outside Handle
LH/RH, Blind Spot Collision Warning Unit LH/RH
P/SEAT
(RR LH) 225ARear IMS Control Module LH
P/SEAT
(DRV) 225ADriver IMS Control Module
P/WINDOW (RH)30APassenger Power Window Module, Rear Power Window
Module RH
MODULE 610ACrash Pad Switch, Blind Spot Collision Warning Unit LH/RH,
ECS Unit, Front Console Switch, Front Camera, Steering Tilt
& Telescopic Module
MODULE 10 10ACooling Fan Controller (BLDC), Rear Seat Console Switch,
Surround View Monitor, Parking Collision Avoidance Assist
Unit
MODULE3 10AGATEWAY (B+ (MCU)), Data Link Connector, Hazard
Switch
SUNROOF 25ASunroof Motor
P/SEAT (PASS) 225APassenger IMS Control Module

7-61
07
Engine compartment fuse panel
Fuse name Fuse rating Circuit protected
ALT 200A
Alternator, Multifuse (BATT) - B+7, COOLING FAN1, B+6,
B+5, B+4, B+3, B+1, (Fuse - WIPER1, FUEL PUMP,
POWER OUTLET1, 4WD, PRESAFETY SEAT BELT1, PRE-
SAFETY SEAT BELT2, P/DOOR DRV, P/DOOR PASS,
P/DOOR RR LH, P/DOOR RR RH, SEAT VENT DRV, SEAT
VENT PASS)
B+1 60AIGPM (Fuse - BRAKE SWITCH, MODULE14, MODULE15,
Leak Current Autocut Device) (Fuse - ROOM LAMP, MEMO-
RY1, MULTI MEDIA1, MULTI MEDIA2, MULTI MEDIA3)
B+3 60AIGPM (IPS2/IPS3, Fuse - MODULE3, E-SHIFTER1)
B+5 60AIGPM (Fuse - P/SEAT (RR LH) 2, P/SEAT (DRV) 2, P/WIN-
DOW (RH), SUNROOF, P/SEAT (PASS) 2, P/SEAT (RR LH) 1)
B+460AIGPM (IPS4/IPS8/IPS9/IPS10, Fuse - IBU1, IBU2, MOD-
ULE12)
B+6 60AMetal Core Block (PCB #1 Fuse - ECU3, IG2, MODULE1)
B+780AMetal Core Block (PCB #2 Fuse - ACC, B/UP LAMP, HORN)
B+2 60AIGPM (Fuse - P/SEAT (DRV) 1, P/SEAT (PASS) 1, P/WIN-
DOW LH, CURTAIN, POWER HANDLE)
B+8 80AMetal Core Block (PCB #1 Fuse - BLOWER FRT, POWER
OUTLET4, A/C2)
MDPS1125AMDPS Unit
POWER
OUTLET3 20AFront Power Outlet & Cigarette Lighter
POWER
OUTLET2 20AFront Power Outlet & Cigarette Lighter
VACUUM
PUMP 40A[3.3 T-GDI] Vacuum Pump Relay
ESC1 40AESC Control Module, Multipurpose Check Connector
ESC2 40AESC Control Module, Multipurpose Check Connector
DEICER 20A Front Deicer Relay

7-62
Maintenance
Fuse name Fuse rating Circuit protected
POWER
OUTLET140A Power Outlet Relay
FUEL PUMP20AFuel Pump Relay
WIPER1 30AWiper Motor
SEAT VENT
DRV20A Driver CCS Module, Driver Seat Warmer Control Module
SEAT VENT
PASS20A Passenger CCS Module, Passenger Seat Warmer Control
Module
4WD 30A 4WD ECM
PRESAFETY
SEAT BELT1 30A Pre Active Seat Belt Unit
PRESAFETY
SEAT BELT2 30APre Active Seat Belt Unit
P/DOOR DRV15ADriver Door Latch
P/DOOR PASS15APassenger Door Latch
P/DOOR RR
LH15ARear Door Latch LH
P/DOOR RR
RH15ARear Door Latch RH
IG230AIG2 Relay
ECU330AEngine Control Relay
MODULE110A4WD ECM, Active Air Flap, Smart Cruse Control Radar
WIPER210AWiper Relay
WASHER20AWasher Relay
SENSOR210A
[3.3 T-GDI] Oxygen Sensor #1/#2/#3/#4, RCV Control
Solenoid Valve, Electronic Thermostat
[5.0 GDI] Oxygen Sensor #1/#2/#3/#4, Electronic
Thermostat

7-63
07
Fuse name Fuse rating Circuit protected
SENSOR110A
[3.3 T-GDI] Oil Controlvalve #1/#2/#3/#4 (Intake/Exhaust),
Purge Control Solenoid Valve, Oil Pressure
Solenoid Valve, Canister Close Valve
[5.0 GDI] Oil Controlvalve #1/#2/#3/#4 (Intake/ Exhaust),
Purge Control Solenoid Valve, Canister Close
Valve
SENSOR310ARear Sub Junction Block (Fuel Pump Relay)
SENSOR410A[5.0 GDI] Camshaft Position Sensor #1/#2/#3/#4 (Intake/
Exhaust)
IGN COIL15A[3.3 T-GDI] Ignition Coil #1/#2/#3/#4/#5/#6
[5.0 GDI] Ignition Coil #1/#2/#3/#4/#5/#6/#7/#8
ECU420AECM
ECU520AECM
A/C210AA/Con Comp Relay
POWER
OUTLET4 20APower Outlet #2 Relay
A/C110AA/C Control Module
BLOWER FRT40AFront Blower Relay
IG140AIG1 Relay
START30AEngine Room Junction Block (Start Relay)
ECU115AECM
TCU120ATCM
ESC310AESC Control Module

7-64
Maintenance
Fuse name Fuse rating Circuit protected
MODULE210A4WD ECM, Active Air Flap, Smart Cruse Control Radar
MDPS210AMDPS Unit, Steering Angle Sensor
SENSOR510A[3.3 T-GDI] Engine Room Junction Block (Vacuum Pump-
Relay), Brake Vacuum Switch
HORN20AHorn Relay
ECU210AECM
TCU215ATCM, B/UP Lamp Relay, P/N Relay
B/UP
LAMP10AB/Up Lamp Relay
ACC40AACC Relay

7-68
Maintenance
Trunk fuse panel
Fuse nameFuse rating Circuit protected
B+9100A
Rear Sub Junction Block (Fuse - REAR HEATED, POWER
TRUNK, DOOR LOCK2, RDM LH, P/SEAT (RR RH) 2, AIR
BAG, RDM RH, AMP, S/HEATER (RR RH), P/SEAT (RR
RH) 1, P/SEAT (RR RH) 3, P/SEAT (RR LH) 3, ECS, FUEL
LID, DOOR LOCK1, TRUNK, S/HEATER (RR LH), BLOW-
ER RR)
START80AMetal Core Block (PCB #2 Fuse - START, ECU1, TCU1,
IG1)
AMS10ABattery Sensor