2012 Lexus LFA 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
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have blown. If
this happens, check and replace the fuses as necessary.
Turn the ignition switch to the “LOCK” position.
Open the fuse box lid.
Engine compartment Push the tabs in and lift the lid off.
Driver's side instrument panel Remove the lid.
Passenger's side instrument panel Remove the lid.STEP1
STEP2

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4-3. Do-it-yourself maintenance
Luggage compartmentRemove the lid.
After a system failure, see “Fuse layout and amperage ratings”
( P. 290) for details about which fuse to check.
Remove the fuse with the pull-out
tool.
The pull-out tool is in the fuse box
of the engine compartment.
Check if the fuse has blown.
Ty p e A Normal fuse
Blown fuse
Replace it with one of an appropri-
ate amperage rating. The amper-
age rating can be found on the fuse
box lid.
STEP3
STEP4
STEP5

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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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4-3. Do-it-yourself maintenance
4
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
4
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