lexus LFA 2012 Owner's Manual / LEXUS 2012 LFA OWNERS MANUAL (OM77006U)

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4-3. Do-it-yourself maintenance
4
Maintenance and care
Ty p e BNormal fuse
Blown fuse
Contact your Lexus dealer.

290
4-3. Do-it-yourself maintenance
Fuse layout and amperage ratings■ Engine compartment
FuseAmpereCircuit
1INJ 10 AMultiport fuel injection system/
sequential multiport fuel injection sys-
tem, noise filter
2A/PMP HTR 20 A Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
3EFI
20 AMultiport fuel injection system/
sequential multiport fuel injection sys-
tem
4A/F HTR 10 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
5SPARE
30 A Spare fuse
6SPARE 20 A Spare fuse
7SPARE 10 A Spare fuse

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Maintenance and care
8CDS FAN 40 A Electric cooling fan
9WIP40 A Windshield wiper
10ABS MTR1 50 A Electronically controlled brake system
11ACC CUT 7.5 A Starter system
12H-LP RH 15 A Headlight low/high beam (right-side)
13H-LP LH 15 A Headlight low/high beam (left-side)
14E/G IG 5 AMultiport fuel injection system/
sequential multiport fuel injection sys-
tem, ASG (Automated Sequential
Gearbox)
15IGN
10 AMultiport fuel injection system/
sequential multiport fuel injection sys-
tem, SRS airbag system, electronically
controlled brake system, electric
power control system
16EFI NO.2 10 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
17EFI NO.1
10 AMultiport fuel injection system/
sequential multiport fuel injection sys-
tem
18P/I
50 A INJ, A/PMP HTR, EFI, A/F HTR
19ST 30 A Starter system
20MAIN 30 A H-LP RH, H-LP LH
21ABS MTR2 50 A Electronically controlled brake system
22F/ P M P3 0 AMultiport fuel injection system/
sequential multiport fuel injection sys-
tem
FuseAmpereCircuit

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4-3. Do-it-yourself maintenance
23IG220 A IGN, E/G IG, ECU-IG2, GAUGE
24D/C C UT 20 A MPX-B, DOME, P-MPX-B
(for suppressing parasitic current)
25HORN
15 A Horn
26ETCS-RH 10 A Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
27ETCS-LH 10 AMultiport fuel injection system/
sequential multiport fuel injection sys-
tem
28BI XENON 10 A Headlight low/high beams
FuseAmpereCircuit

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4-3. Do-it-yourself maintenance
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Maintenance and care
■Driver’s side instrument panel
FuseAmpereCircuit
1D-P/W 20 A Power window (driver's side)
2D-PWR SEAT 30 A Power seat (driver's side)
3DRLCK ALT 25 A Main body ECU
4RLY SIG 5 A PANEL
5OBD10 A On-board diagnosis
6AM1 5 AD-ACC, P-ACC, CDS FAN, WIP,
WASH, MIR HTR, D-S/HTR, P-S/
HTR, D-IG1-1, D-IG1-2, D-IG1-3, D-
IG1-4, P-IG1-1, P-IG1-2, P-IG1-3, P-
IG1-4, RR-IG1
7D-S/HTR 15 A Seat heater (driver's side)
8D-ACC
5 A Main body ECU
9R/MIR10 A Outside rear view mirrors
10D-IG1-1 5 A CAN gateway ECU
11D-IG1-4 5 A Seat heater (driver's side)
12D-IG1-25 AMain body ECU, rear hatch, EPS
(Electric Power Steering), tire pres-
sure warning system, charging system,
turn signal lights, emergency flashers

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4-3. Do-it-yourself maintenance
13D-IG1-35 AElectronically controlled brake sys-
tem, VDIM (Vehicle Dynamics Inte-
grated Management)
14ABS MAIN D2 10 A Electronically controlled brake system
15ABS MAIN D1 10 A Electronically controlled brake system
16STOP
10 AMultiport fuel injection system/
sequential multiport fuel injection sys-
tem, electronically controlled brake
system, ASG (Automated Sequential
Gearbox), stop/tail lights, high
mounted stoplight
17DRLCK BAT 25 A Main body ECU
18HAZ
10 ATurn signal lights, emergency flashers,
gauges and meters
19AM2
5 AIGN, E/G IG, EFI NO.1, EFI NO.2,
ECU-IG2, GAUGE, ASG-IG2
20PANEL
5 A Interior lights
21DOME 5 A Interior lights
22MPX-B10 AMultiport fuel injection system/
sequential multiport fuel injection sys-
tem, main body ECU, rear hatch,
power seat (driver's side), gauges and
meters, VDIM (Vehicle Dynamics
Integrated Management)
FuseAmpereCircuit

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4-3. Do-it-yourself maintenance
4
Maintenance and care
■Passenger’s side instrument panel
FuseAmpereCircuit
1P-PWR SEAT 30 A Power seat (passenger's side)
2P-P/W 20 A Power window (passenger's side)
3DISPLAY2 10 A Navigation system
4DISPLAY1 10 A Remote Touch, navigation system, air
conditioning system
5A/C
10 A Air conditioning system
6P- ACC 5 ARemote Touch, navigation system, air
conditioning system, Lexus Enform
7P-CIG
15 A Power outlet
8P-IG1-4 5 A Seat heater (passenger's side)
9P- I G 1 -15 AMultiport fuel injection system/
sequential multiport fuel injection sys-
tem, air conditioning system
10P- I G 1 -3
5 ASRS airbag system, VDIM (Vehicle
Dynamics Integrated Management)
11P- I G 1 -2
5 ANavigation system, air conditioning
system
12ABS MAIN P1 10 A

13ABS MAIN P2 10 A Electronically controlled brake system

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4-3. Do-it-yourself maintenance
14PMG5 A Electric power control system
15RAD NO.1 10 A Audio system
16MAYDAY 5 A Lexus Enform
17P-S/HTR 15 A Seat heater (passenger's side)
18MIR HTR 15 A Outside rear view mirror defoggers
19P- M PX- B 5 A Multiport fuel injection system/
sequential multiport fuel injection sys-
tem, wireless remote door lock func-
tion, power seat (passenger’s side)
20GAUGE 10 A Gauges and meters
21ECU-IG2 5 AMultiport fuel injection system/
sequential multiport fuel injection sys-
tem, ASG (Automated Sequential
Gearbox), electric power control sys-
tem, passenger occupant classifica-
tion system, CAN gateway ECU,
Lexus Enform
FuseAmpereCircuit

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4-3. Do-it-yourself maintenance
4
Maintenance and care
■ Luggage compartment
FuseAmpereCircuit
1VSSR 5 A Electric power control system
2RR-IG110 AActive rear wing, electric cooling fans,
electronic parking brake, electroni-
cally controlled brake system, seat
belts, navigation system, rear window
defogger, back-up lights
3WASH
20 A Windshield washer
4F/OPN 10 A Fuel filler door opener
5TA I L 1 0 AParking lights, front side marker lights,
rear side marker lights, license plate
lights, stop/tail lights
6RR FOG 7.5 A

7AMP RH 30 A Audio system
8AMP LH 30 A Audio system
9OIL PMP 25 AASG (Automated Sequential Gear-
box)
10RR ECU-B 7.5 AActive rear wing, electronic parking
brake
11ASG-IG2 7.5 AASG (Automated Sequential Gear-
box)

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4-3. Do-it-yourself maintenance
12ASG-B7.5 AASG (Automated Sequential Gear-
box)
13BK/UP BAT 10 A Electronically controlled brake system
14ASG-SOL 10 A ASG (Automated Sequential Gear-
box)
■After a fuse is replaced
●If the lights do not turn on even afte
r the fuse has been replaced, a bulb may
need replacement. Take your vehicle to your Lexus dealer for inspection.
●If the replaced fuse blows again, have the vehicle inspected by your Lexus
dealer.
■If there is an overload in the circuits
The fuses are designed to blow, protecting the wiring harness from damage.
CAUTION
■To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failing to do so may cause damage, and possibly a fire or injury.
●Never use a fuse of a higher amperage rating than indicated, or use any other
object in place of a fuse.
●Always use a genuine Lexus fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
This can cause extensive damage or even fire.
●Do not modify the fuses or the fuse box.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by your Lexus
dealer as soon as possible.
FuseAmpereCircuit