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Under-Hood Fuse/Relay Box

Fig 1: Under-Hood Fuse/Relay Box Component Locations
GHH433849Courtesy of HONDA, U.S.A., INC.
Under-Hood Fuse/Relay Box Legend

Fuse Number Amps Component(s) or Circuit(s) Protected
B1 20 A No. B32 and No. B33 fuses in the under-hood fuse/relay box (via lighting relay), lighting relay
B2 --- Not used
B3 10 A MICU (+B HAZARD), MICU (HAZARD SW) (via under-dash fuse/relay box, hazard warning switch)
B4 15 A No. B30 and No. B31 fuses in the under-hood fuse/relay box (via electronic throttle control system (ETCS) control relay), PCM (VBDBW) (via electronic throttle control system (ETCS) control relay)
B5 30 A Windshield wiper high/low relay (via windshield wiper motor relay) *1, Windshield wiper intermittent relay (via windshield wiper motor relay) *1
B6 10 A High mount brake light (via brake light relay and under-dash fuse/relay box), High mount brake light (via brake pedal position switch, brake light relay, and under-dash fuse/relay box), Keyless access control unit (BRK DIAG) (via brake pedal position switch)* 1, Left brake light (via brake light relay and under-dash fuse/relay box), Left brake light (via brake pedal position switch, brake light relay, and under-dash fuse/relay box), MICU (STOP LT) (via brake light relay), MICU (STOP LT) (via brake pedal position switch and brake light relay), PCM (BRK DIAG) (via brake pedal position switch), Right brake light (via brake light relay and under-dash fuse/relay box), Right brake light (via brake pedal position switch, brake light relay, and under-dash fuse/relay box), VSA modulator-control unit (STOP SW) (via brake light relay), VSA modulator-control unit (STOP SW) (via brake pedal position switch and brake light relay)
B7 15 A CKP sensor (via PGM-FI main relay 1), CMP sensor (via PGM-FI main relay 1), Electronic throttle control system (ETCS) control relay (via PGM-FI main relay 1), PGM-FI main relay 2 (via PGM-FI main relay 1), Injectors (via PGM-FI main relay 1), PCM (FI MAIN RLY OUT) (via PGM-FI main relay 1), PGM-FI main relay 1
B8 15 A Ignition coil relay, Ignition coils (via ignition coil relay)
B9 --- Not used
B10 --- Not used
B11 --- Not used
B12 30 A Radiator fan motor (via radiator fan relay)
B13* 1 30 A No. B25 fuse in the under-hood fuse/relay box (via starter cut relay 1), Starter (via starter cut relay 1 and starter cut relay 2), Diode (via starter cut relay 1 and starter cut relay 2)
B14 7.5 A A/C compressor clutch (via A/C compressor clutch relay)
B15 7.5 A 12 volt battery sensor
B16 10 A A/T gear position indicator * 3* 11, Audio remote switch* 12, Console box light* 11, Cruise control combination switch* 13, ECON switch* 11* 14, Electric parking brake/automatic brake hold switch* 11, Front passenger's airbag ON/OFF indicator* 11, Hazard warning switch* 11, Heated windshield wiper area switch* 4* 11, Heater control panel lights (ILLUMI+)* 2* 11, HFL switch* 13, HVAC control unit* 2* 11, FCW/LDW OFF switch* 7* 11, Left front side marker light* 10* 17, Left front parking light* 10, Left license plate light* 11, Left rear side marker light* 11* 17, Left taillight* 11, Moonroof switch* 5* 11, Right front side marker light* 11* 17, Right front parking light* 11, Right license plate light* 11, Right rear side marker light* 11* 17, Right taillight* 11, Power window master switch (ILLUMI+)* 11, Taillight relay, TPMS switch* 6* 11, VSA OFF switch* 11
B17 --- Not used
B18 10 A 12 volt battery sensor, Horn (low) (via horn relay), Horn relay, Security horn/horn (high) (via security horn relay), Security horn relay
B19 10 A Front fog light relay, Left front fog light (via front fog light relay), Right front fog light (via front fog light relay)
B20 --- Not used
B21 10 A Automatic lighting control unit-sensor (+B BACK UP) (via under-dash fuse/relay box)* 8, Gauge control module (+B BACK UP) (via under-dash fuse/relay box), Keyless access control unit (+B BACK UP) (via under-dash fuse/relay box)* 1, Immobilizer-keyless control unit (+B BACK UP) (via under-dash fuse/relay box)* 9, MICU (+B BACK UP)
B22 10 A Audio unit *15, Audio-navigation unit *16
B23 30 A A/C condenser fan motor (via A/C condenser fan relay)
B24 --- Not used
B25* 1 7.5 A PCM (START DIAG)
B26 7.5 A Diode
B27 --- Not used
B28 --- Not used
B29 --- Not used
B30 7.5 A A/F sensor (Sensor 1), EVAP canister vent shut valve
B31 7.5 A A/C condenser fan relay, Fan control relay
B32 10 A Right headlight (low beam)
B33 10 A Left headlight (low beam)

*1: With keyless access system

*2: Without climate control

*3: CVT

*4: With heated windshield wiper area

*5: With moonroof

*6: With TPMS

*7: With forward collision warning or lane departure warning

*8: With automatic lighting

*9: Without keyless access system

*10: Via taillight relay

*11: Via taillight relay and under-dash fuse/relay box

*12: Via taillight relay, under-dash fuse/relay box, and cable reel

*13: Via taillight relay, under-dash fuse/relay box, cable reel, and audio remote switch

*14: With ECON switch

*15: Without navigation

*16: With navigation

*17: Without LED headlight