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Under-Dash Fuse/Relay Box (B)

Fig 1: Under-Dash Fuse/Relay Box (B) Components Location
GHH257475Courtesy of HONDA, U.S.A., INC.
Under-Dash Fuse/Relay Box (B) Legend

Fuse Number Amps Component (s) or Circuit (s) Protected
B1 7.5 A Blower motor relay,

Climate control unit,

Driver's seat heater switch *1,

Electric heater coolant pump relay (built into the relay circuit board),

Front passenger's seat heater switch *1,

Left power mirror actuator (via power mirror switch),

Left rear seat heater switch *2,

Door multiplex control unit,

Door multiplex control unit (via power mirror switch),

PTC heater A relay,

PTC heater B relay,

Rear window defogger relay,

Right rear seat heater switch *2

B2 7.5 A MICU (IG2 DRL)
B3 - - - Not used
B4 - - - Not used
B5 10 A Active noise cancellation unit,

Acoustic vehicle alerting control unit,

Acoustic vehicle alerting system off switch *3,

Audio-navigation unit *4,

Automatic dimming inside mirror *5,

Battery condition monitor module,

CAN gateway,

Gauge control module,

MICU (IG1 METER),

Shift lock solenoid,

Reverse relay circuit (built into the under-dash fuse/relay box),

Audio-navigation unit (via reverse relay circuit) *4,

Audio unit (via reverse relay circuit) *6,

Automatic dimming inside mirror (via reverse relay circuit) *5,

Left back-up light (via reverse relay circuit),

Right back-up light (via reverse relay circuit),

MICU (BACK LT) (via reverse relay circuit)

B6 7.5 A SRS unit,

Front passenger's cutoff indicator,

Front passenger's weight sensor unit

B7 7.5 A ACC unit *8,

FCW/LDW camera unit *7,

Head up warning unit *16,

LDW camera unit *8,

LDW OFF switch *9,

Millimeter wave radar *8,

Power seat control unit *11

B8 - - - Not used
B9 20 A Electric steering lock,

Keyless access control unit,

PCM (IG1 (F/P)),

Fuel tank unit (FUEL PUMP) (via PGM-FI main relay 2)

B10 7.5 A Brake light relay,

Electric servo brake control unit,

EPS control unit,

Steering angle sensor,

VSA modulator-control unit

B11 - - - Not used
B12 7.5 A Windshield wiper intermittent relay circuit (built into the relay circuit board),

Windshield wiper HIGH/LOW relay circuit (built into the relay circuit board)

B13 15 A A/C compressor,

DC-DC converter,

MAF sensor,

PCM (BKSWNC) (via brake pedal position switch),

Secondary HO2S (sensor 2)

B14 20 A Console accessory power socket (via console accessory power socket relay)
B15 20 A Rear up-down motor and recline motor (via driver's power seat adjustment switch) *10,

Power seat control unit *11

B16 *12 20 A Moonroof control unit/motor
B17 20 A Driver's seat heater (via driver's seat heater relays) *1,

Front passenger's seat heater (via front passenger's seat heater relays) *1

B18 - - - Not used
B19 10 A Front passenger's door lock actuator,

Right rear door lock actuator

B20 10 A Left rear door lock actuator
B21 10A Driver's door lock actuator
B22 10 A Front passenger's door lock actuator,

Right rear door lock actuator

B23 10A Driver's door lock actuator
B24 10 A SRS unit
B25 10 A A/T gear position indicator panel light,

ACC combination switch light *8,

Acoustic vehicle alerting system off switch light *3,

Ambient light,

Audio remote switch light (via cable reel),

Climate control unit,

Cruise control combination switch light *13,

Driver's seat heater switch light *1,

ECON switch light,

EV switch light,

Front passenger's airbag cutoff indicator,

Front passenger's seat heater switch light *1,

Hazard warning switch light,

HFL-navigation voice control switch light (via cable reel and audio remote switch) *4,

HFL switch light (via cable reel and audio remote switch) *14,

HOMELINK unit *15,

LDW OFF switch light *9,

Left rear seat heater switch light *2,

Moonroof switch light *12,

Multi-information display unit,

Multi-information switch light,

Navigation switch panel light *4,

Right rear seat heater switch light *2,

VSA off switch light

B26 7.5 A MICU (ACC KEYLOCK)
B27 10 A Left front parking light,

Left front side marker light,

Left inner taillight,

Left license plate light,

Left taillight/left rear side marker light,

Right front parking light,

Right front side marker light,

Right inner taillight,

Right license plate light,

Right taillight/right rear side marker light

B28 10 A Driver's power lumbar support motor (via driver's power lumbar support switch)
B29 10 A MICU (+B R H/L HI)
B30 15 A Windshield washer motor relay circuit (built into the under-dash fuse/relay box),

Windshield washer motor (via windshield washer motor relay circuit)

B31 10 A Climate control unit (via electric heater coolant pump relay circuit),

Electric heater coolant pump (via electric heater coolant pump relay circuit)

B32 20 A Door multiplex control unit
B33 20 A Front passenger's power window switch
B34 20 A Left rear power window motor (via left rear power window switch)
B35 20 A Right rear power window motor (via right rear power window switch)
B36 20 A Front up-down motor and slide motor (via driver's power seat adjustment switch) *10,

Power seat control unit *11

B37 7.5 A Audio unit *14,

Audio-navigation unit *4,

Console accessory socket relay,

Front accessory power socket relay,

Keyless access control unit,

Multi-information display unit,

Navigation switch panel *4

B38 - - - Not used
B39 10 A MICU (+B L H/L HI)
B40 20 A Front accessory power socket (via front accessory power socket relay)
B41 10 A Left rear door lock actuator
B42 20 A Power door lock relay (LOCK) circuit (built into the under-dash fuse/relay box),

Power door lock relay (UNLOCK) circuit (built into the under-dash fuse/relay box),

Power door lock relay (DR UNLOCK) circuit (built into the under-dash fuse/relay box),

Trunk lid release actuator relay circuit (built into the under-dash fuse/relay box),

No. B19 and No. B20 fuses (via power door lock relay (UNLOCK) circuit),

No. B21, B22, and No. B41 fuses (via power door lock relay (LOCK) circuit),

No. B23 fuse (via power door lock relay (DR UNLOCK) circuit),

Trunk lid release actuator (via trunk lid release actuator relay circuit)

*1: With seat heater
*2: With rear seat heater
*3: Canada model
*4: With navigation
*5: With automatic dimming inside mirror
*6: Without navigation with touch screen
*7: Without ACC with LDW
*8: With ACC
*9: With LDW
*10: Without DPMS
*11: With DPMS
*12: With moonroof
*13: Without ACC
*14: Without navigation
*15: With HOMELINK
*16: With FCW