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Home >> Honda >> 2021 >> Pilot EX, AWD >> Repair and Diagnosis (Single Page) >> Quick Lookups >> Electrical Component Locations >> Electrical System - Testing & Troubleshooting >> Fuse To Components Index >> Fuse To Components Index (Without Auto Idle Stop System) (2019 2020 2021) >> Under-Dash Fuse/Relay Box
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Under-Dash Fuse/Relay Box

Fig 1: Under-Dash Fuse/Relay Box Component Locations
GHH306372Courtesy of HONDA, U.S.A., INC.
Under-Dash Fuse/Relay Box Legend

Fuse Number Amps Component(s) or Circuit(s) Protected Feature
C1 20 A Power window master switch (+B DR P/W)  
C2 20 A No. C19 and C20 fuses (via power door lock relay (UNLOCK) circuit (built into the under-dash fuse/relay box)),

No. C33, C34, and C41 fuses (via power door lock relay (LOCK) circuit (built into the under-dash fuse/relay box)),

No. C35 fuse (via power door lock relay (DR 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), 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), Tailgate release actuator relay circuit (built into the under-dash fuse/relay box)*, Tailgate release actuator (via tailgate release actuator relay circuit (built into the under-dash fuse/relay box))*

*: Without power tailgate
C3 7.5 A Electric steering lock*, Engine start/stop switch, Keyless access/TPMS control unit (+B SMART) *: With electric steering lock
C4 20 A Front passenger's power window switch (+B AS P/W)  
C5 20 A Front accessory power socket (via front accessory power socket relay)  
C6 20 A Fuel tank unit (via PGM-FI main relay 2), PCM (IG1 FUEL PUMP)  
C7 15 A Active control engine mount (ACM) control relay, Engine mount control unit (IG1 ACG), EVAP canister purge valve, MAF sensor, PCM (IG1(VBSOL)), Starter cut relay 1, Starter cut relay 2, PCM (CANCEL SW) (via brake pedal position switch)  
C8 7.5 A Windshield wiper high/low relay circuit (built into the relay circuit board), Windshield wiper intermittent relay circuit (built into the relay circuit board)  
C9 7.5 A Brake light relay, Electric steering lock*, EPS control unit (IG1 VSA), Steering angle sensor, Keyless access/TPMS control unit (IG1 VSA), VSA modulator-control unit (IG1 VSA) *: With electric steering lock
C10 10 A SRS unit (VB)  
C11 20 A Left rear power window motor (via left rear power window switch)  
C12 - - - Not used  
C13 20 A Right rear power window motor (via right rear power window switch)  
C14 20 A Fuel fill door opener solenoid (via fuel fill door opener solenoid relay), Fuel fill door opener solenoid relay, Moonroof motor-control unit (+B S/R)  
C15 20 A Power seat control unit (+B DR P/SEAT (REC))  
C16 - - - Not used  
C17 20 A Front seat heater control unit (+B H/SEAT UNIT) (via front seat heater relay)*2 *1: With ventilated seat
*2: With front seat heater
Via ventilated seat relay*1:

Driver's seat cushion blower motor, Driver's seat-back blower motor, Front passenger's seat cushion blower motor, Front passenger's seat-back blower motor, Ventilated seat control unit (+B H/SEAT UNIT)

C18 7.5 A Interior lights cut relay *1: Without panoramic glass roof
*2: With panoramic glass roof
Via interior lights cut relay:

Cargo area light, Door courtesy lights, Front individual map light*1, One-touch access switch lights, Power tailgate inside switch light, Rear individual map lights*1, Rear map lights*2, Roof console module*2, Vanity mirror lights

C19 10 A Left rear door lock actuator  
C20 10 A Front passenger's door lock actuator, Right rear door lock actuator  
C21 7.5 A Headlights, MICU (IG2 DRL)  
C22 7.5 A MICU (ACC KEYLOCK)  
C23 7.5 A A/C compressor clutch relay, AC inverter unit (IG2 A/C), Automatic dimming inside mirror (IG2 A/C), Climate control unit (IG2 A/C)*1, Climate control unit (HS DR SW HT) (via driver's seat heater switch)*7, Climate control unit (HS PS SW HT) (via front passenger's seat heater switch)*7, Driver's seat heater switch indicators*7, Driver's ventilated seat switch indicators*6, Diode, Front blower motor relay, Front seat heater relay*7, Front passenger's seat heater switch indicators*7, Front passenger's ventilated seat switch indicators*6, Heated steering wheel relay, Heated windshield wiper area relay, HVAC control unit (IG2 A/C)*2, Power window master switch (IG2 A/C), Rear blower motor relay, Rear control panel, Rear window defogger relay, Second row seat heater relay, Ventilated seat relay*6 *1: With climate control
*2: Without climate control
*3: With DPMS
*4: Without DPMS
*5: With retractable mirror
*6: With ventilated seat
*7: With front seat heater
Via power mirror switch*3:

Power mirror control unit (R-LR), Power mirror control unit (R-UD), Power mirror control unit (R/C MIRR MTR(L-COM)), Power mirror control unit (R/C MIRR MTR(L-LR)), Power mirror control unit (R/C MIRR MTR(L-UD)), Power window master switch (RETRA SW)*5

Via power mirror switch*4:

Power window master switch (R/C MIRR MTR(L-UD)), Power window master switch (R-UD), Power window master switch (R-LR), Power window master switch (RETRA SW)*5

Via driver's ventilated seat switch*6:

Climate control unit (HS DR SW FAN), Climate control unit (HS DR SW HT)

Via front passenger's ventilated seat switch*6:

Climate control unit (HS PS SW FAN), Climate control unit (HS PS SW HT)

C24 7.5 A Keyless access/TPMS control unit (IG1A FBK)  
C25 7.5 A ACC combination switch light (via cable reel and audio remote-HFL switch)*10, A/T gear position indicator panel light, Audio remote-HFL switch light (via cable reel), Automatic dimming inside mirror (ILLUMI+), BD player unit (ILLUMI+)*1, Beverage holder lights, CD player unit (ILLUMI+)*1, Climate control unit (ILLUMI+)*4, CMBS OFF switch light, Console box light, Cruise control combination switch light (via cable reel and audio remote-HFL switch)*11, Dashlights brightness control switch light, Driver's seat heater switch light*7, Driver's ventilated seat switch light*6, ECON switch light, Footwell lights, Front passenger's airbag CUTOFF indicator, Front passenger's seat heater switch light*7, Front passenger's ventilated seat switch light*6, Glove box light, Hazard warning switch light, Heated steering wheel switch light (via cable reel and audio remote-HFT switch), Heated windshield wiper area switch light, HVAC control unit (ILLUMI+)*5, Intelligent traction management switch light*12, Interior light switch light*3, Moonroof switch light*3, Parking and back-up sensor switch light, Power mirror switch light, RDM switch light, Rear control panel, RES auxiliary jack assembly*1, Roof console module*2, Snow switch light*8, Telematics switch module*3*9, VSA OFF switch light *1: Display audio type
*2: With panoramic glass roof
*3: Without panoramic glass roof
*4: With climate control
*5: Without climate control
*6: With ventilated seat
*7: With front seat heater
*8: 2WD
*9: With telematics
*10: With multipurpose camera unit
*11: Without multipurpose camera unit
*12: AWD
C26 10 A Driver's lumbar support motor (via driver's lumber support switch), Left one-touch access actuator (via left second row seat with one-touch access relay), Left second row seat with one-touch access relay, Right one-touch access actuator (via right second row seat with one-touch access relay), Right second row seat with one-touch access relay  
C27 7.5 A Headlights, Inner taillights, License plate lights, Taillights/rear side marker lights  
C28 10 A 12 volt battery fan motor, BSI radar unit (IG1 OPTION), CAN gateway*3, Headlight leveling control unit (IG1 OPTION), i-VTM control unit (IG1 OPTION)*1, Millimeter wave radar*2, Multipurpose camera unit (IG1 OPTION)*2, Multipurpose camera unit (LDW IND) (via RDM switch)*2, Power tailgate control unit (IG1 OPTION), RDM switch indicator*2, Rear differential pump motor*1 *1: AWD
*2: With multipurpose camera unit
*3: With CAN gateway
C29 7.5 A ANC/active sound control unit (IG1 METER), Front seat heater control unit (IG1 METER), Gauge control module (IG1 METER), MICU (IG1 METER), Parking and back-up sensor control unit (IG1 METER), Parking and back-up sensor control unit (PARK SNSR SW) (via parking and back-up sensor switch), Parking and back-up sensor switch indicator, Power mirror control unit (IG1 METER), Power seat control unit (IG1 METER), Reverse relay circuit (built into the under-dash fuse/relay box), Second row seat heater control unit (IG1 METER(7.5A)), Shift lock solenoid, Sunshade motor-control unit (IG1 METER)*1, Ventilated seat control unit (IG1 METER)*2 *1: With panoramic glass roof
*2: With ventilated seat
*3: Color audio type
Via reverse relay circuit (built into the under-dash fuse/relay box):

Automatic dimming inside mirror (BACK LT), Back-up lights, Diode*3, MICU (BACK LT)

C30 10 A Rear window wiper motor (via rear window wiper motor relay)  
C31 7.5 A PCM (IG1 VB SOL)  
C32 7.5 A Front passenger's airbag CUTOFF indicator  
C33 10 A Front passenger's door lock actuator, Right rear door lock actuator  
C34 10 A Driver's door lock actuator  
C35 10 A Driver's door lock actuator  
C36 20 A Power seat control unit (+B DR P/SEAT (SLI))  
C37 10 A MICU (+B R H/L HI)  
C38 10 A MICU (+B L H/L HI)  
C39 7.5 A Keyless access/TPMS control unit (IG1B FBK)  
C40 7.5 A Cargo area accessory power socket relay, Console accessory power socket relay, Diode*2, Front accessory power socket relay, Rear ANC/active sound control microphone*2, USB charger unit*2, USB charger unit A*1, USB charger unit B*1, Wireless charger *1: Display audio type
*2: Color audio type
C41 10 A Left rear door lock actuator  
C42 - - - Not used