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Under-Hood Fuse/Relay Box

Fig 1: Under-Hood Fuse/Relay Box Component Locations
GHH384307Courtesy of HONDA, U.S.A., INC.
Under-Hood Fuse/Relay Box Legend

Fuse Number Amps Component (s) or Circuit (s) Protected Feature
B1-1 150 A PCU, No. B3-1, No. B3-2, No. B3-3, No. B3-4, No. B3-5 *2, No. B3-6, No. B4-3, No. B4-4, No. B19, No. B20 *1, No. B21, No. B22, No. B23, and No. B24 fuses in the under-hood fuse/relay box, No. D1-1, No. D1-2, No. D2, No. D5 *2, and No. D7 *3 fuses in the fuse/relay holder A, Jump start terminal *1: With front fog light*2: With display audio type*3: With rear seat heater
B1-2 30 A IG1A relay circuit (built into the under-dash fuse/relay box), Body control module (via the IG1A relay circuit), No. C8, No. C20, No. C21, No. C34 and No. C35 fuses in the under-dash fuse/relay box (via the IG1A relay circuit), ACC relay circuit (built into the under-dash fuse/relay box), No. C1 fuse in the under-dash fuse/relay box (via the ACC relay circuit)  
B1-3 30 A A/C condenser fan relay, A/C condenser fan motor (via the A/C condenser fan relay)  
B1-4 30 A IG1B relay circuit (built into the under-dash fuse/relay box), IG2 relay circuit (built into the under-dash fuse/relay box), Body control module (via the IG2 relay circuit), No. C9, and No. C22 fuses in the under-dash fuse/relay box (via the IG2 relay circuit)  
Via the IG1B relay circuit:
Body control module, No. C3, No. C4, No. C5, No. C6, No. C7 and No. C17 fuses in the under-dash fuse/relay box
B1-5 30 A No. B25, and No. B26 fuses in the fuse/relay holder C, No. B28, and No. B29 fuses in the fuse/relay holder B  
B1-6 40 A Electric servo brake control unit/pedal feel simulator  
B1-7 30 A Engine EWP relay (2 wires), Electric engine coolant pump (2 wires) (via the engine EWP relay)  
B2-1 30 A Windshield wiper control unit/motor  
B2-2 30 A Relay control module  
B2-3 30 A Park pawl actuator relay (2 wires), Park pawl actuator (via the park pawl actuator relay)  
B2-4 30 A Relay control module  
B2-5 30 A Radiator fan relay, Radiator fan motor (via the radiator fan relay)  
B2-6 70 A EPS control unit  
B3-1 40 A Blower motor (via the blower motor relay), Blower motor relay  
B3-2 40 A VSA modulator-control unit  
B3-3 40 A No. C19, No. C31, No. C32, and No. C33 fuses in the under-dash fuse/relay box  
B3-4 40 A VSA modulator-control unit  
B3-5 30 A Stereo amplifier * *: With navigation
B3-6 40 A Rear window defogger relay, Rear window defogger *1 (via the rear window defogger relay), Rear window defogger *2 (via the rear window defogger relay and noise reduction condenser), Noise reduction condenser (via the rear window defogger relay) *1: With display audio type (8-inch screen) *2: With color audio type (5-inch screen)
B4-1 --- Not used  
B4-2 --- Not used  
B4-3 40 A No. C37 fuse in the under-dash fuse/relay box  
B4-4 60 A No. C15, No. C16, No. C28, No. C29, and No. C30 fuses in the under-dash fuse/relay box, Power window relay (2 wires), No. C14, and No. C27 fuses in the under-dash fuse/relay box (via the power window relay)  
B5 7.5 A A/C condenser fan relay, Fan control relay  
B6 10 A PCM  
B7 10 A IGHLD1 relay (2 wires)  
Via the IGHLD1 relay: PCU electric coolant pump relay, PCU, Battery condition monitor module
B8 10 A PCU electric coolant pump relay, PCU electric coolant pump (via the PCU electric coolant pump relay)  
B9 15 A PGM-FI main relay 1 circuit (2 wires) (built into the relay circuit board)  
Via the PGM-FI main relay 1 circuit:
PGM-FI main relay 2, Injectors, PCM
B10 10 A Relay control module, Body control module, Data link connector, CAN gateway, Automatic lighting control unit-sensor *2, Automatic lighting/rain sensor *1, Gauge control module, Power window master switch, Active noise cancellation unit, Homelink unit *3, Telematics control unit *4, PCM (via the fuel fill door opener switch) *5, Fuel fill door opener switch *5 *1: With automatic wiper*2: Without automatic wiper*3: With homelink *4: With navigation*5: KA and KC models
B11 7.5 A EVAP canister purge valve, A/F sensor (SENSOR 1)  
B12 20 A Electric VTC relay circuit (2 wires) (built into the relay circuit board), Electric VTC motor (2 wires) (via the electric VTC relay circuit)  
B13 10 A Body control module  
B14 15 A Ignition coil relay circuit (2 wires) (built into the relay circuit board), Ignition coils (via the Ignition coil relay circuit)  
B15 15 A PGM-FI subrelay circuit (2 wires) (built into the relay circuit board), Fuel fill door opener solenoid (via the fuel fill door opener solenoid relay and PGM-FI subrelay circuit) * *: KA and KC models
Via the PGM-FI subrelay circuit: PCM, No. B5 and No.B11 fuse in the under-hood fuse/relay box, Fuel fill door opener solenoid relay (2 wires) *, Evap leak check module *, Fuel vapor containment valve *
B16 10 A Brake light relay circuit (built into the relay circuit board), Brake light relay circuit (via the brake pedal position switch), Brake pedal position switch, PCM  
Via the brake light relay circuit:
Left brake light, Right brake light, High mount brake light, Electric servo brake control unit/pedal feel simulator, Electric servo brake control unit/pedal feel simulator (via the brake pedal position switch)
B17 --- Not used  
B18 --- Not used  
B19 15 A Audio unit *2, Audio-navigation unit *1, Center display unit *1: With navigation*2: Without navigation
B20 * 15 A Front fog light relay (2 wires), Left front fog light (via the front fog light relay), Right front fog light (via the front fog light relay) *: With front fog light
B21 * 20 A Front passenger's power seat adjustment switch, Recline motor (2 wires) (via the front passenger's power seat adjustment switch) *: With front passenger's power seat
B22 * 20 A Front passenger's power seat adjustment switch, Slide motor (2 wires) (via the front passenger's power seat adjustment switch) *: With front passenger's power seat
B23 10 A 12 Volt battery sensor, Security horn relay circuit (2 wires) (built into the relay circuit board), Horn (via the security horn relay circuit)  
B24 15 A Relay control module  
B25 10 A SBW sifter control module  
B26 10 A Power switch, Body control module  
B27 --- Not used  
B28 10 A Park pawl actuator driver unit  
B29 10 A IGHLDB relay (2 wires), Battery condition monitor module (via the IGHLDB relay), Battery condition monitor module  
B30 --- Not used