FixVault
Home › Acura › 2012 › MDX › Repair and Diagnosis › Electrical › Body Electrical › Power Distribution (Fuse Id) › Fuse to Components Index

Fuse to Components Index

MAIN UNDER-HOOD FUSE BOX

Fuse Number Amps Component(s) or Circuit(s) Protected
1 (BAT) 120 A Alternator, No. 3 fuse (in the main under-hood fuse box)
--- --- Not used
2 (OP1) 40 A No. 1, No. 2, No. 3, and No. 4 fuses (in the under-dash fuse/relay box)
(OP2) 40 A No. 12, No. 13, No. 14, No. 15, No. 16, and No. 17 fuses (in the under-dash fuse/relay box)
(TRAILER) 40 A No. 1, No. 2, No. 3, and No. 4 fuses in the rear fuse/relay box(4)
(VSA MTR) 40 A VSA modulator-control unit (+B MOT)
(RR BLOWER) 30 A Rear blower motor(5)
(SVTM-4) 30 A SH-AWD control unit(6)
(ADS)(14) 30 A Active damper control unit
3 (IG) 50 A Ignition switch (BAT), No. 1 fuse in the auxiliary under-dash fuse holder 1(7), No. 33 fuse (in the under-dash fuse/relay box), Starter solenoid(8)
(P/W) 50 A No. 24, No. 25, No. 26, No. 27, and No. 28 fuses in the under-dash fuse/relay box, Power window relay in the under-dash fuse/relay box
(RR F/B) 60 A No. 5, No. 6, No. 7, No. 8, No. 9, No. 10, and No. 11 fuses (in the rear fuse/relay box)
(RB1) 30 A No. 7 (Via PGM-FI main relay 1 in the relay control module), No. 8, No. 9, No. 10, and No. 11 fuses (in the under-hood fuse/relay box)
(RB2) 40 A No. 5 (Via taillight relay circuit in the relay control module), and No. 6 fuses (in the under-hood fuse/relay box)
(RB3) 60 A No. 14, No. 15, No. 16, and No. 17 fuses (in the under-hood fuse/relay box)
(RB4) 60 A No. 12, No. 13, and No. 22 fuses (in the under-hood fuse/relay box)
(TECH) 30 A No. 1 fuse (in the auxiliary under-hood fuse/relay box)
4 40 A No. 5, No. 6, No. 7, No. 8, and No. 9 fuses (in the under-dash fuse/relay box)
5 30 A E-pretensioner unit
6 30 A E-pretensioner unit
7 30 A(13) Active damper control unit
7.5 A(14) PCM (VBUM)
8 30 A Stereo amplifier
9 7.5 A Battery sensor
10 15A Hazard warning switch(9), Turn signal/Hazard relay
11 15A ACC unit(2), High mount brake light(3), Horn(10), Left taillight(3), MICU(1), Noise reduction condenser (for high mount brake light)(3), PCM (BKSW)(1), Right taillight(3), VSA modulator-control unit(2), Relay control module (Horn relay circuit)
12 20 A VSA modulator-control unit (+B SOL)
13 20 A Optional (for trailer)
14 20 A Left second row seat heater(11), Left second row seat heater switch indicators(12), Right second row seat heater(11), Right second row seat heater switch indicators(12)
15 20 A AC inverter unit
(1) Via brake pedal position switch
(2) Via brake pedal position switch and brake light relay or via brake light relay
(3) Via brake pedal position switch, brake light relay, and rear fuse/relay box or via brake light relay and rear fuse/relay box
(4) Optional trailer connectors
(5) Via rear blower motor relay
(6) Via SH-AWD relay
(7) Via starter cut relay 1
(8) Via starter cut relay 1, 2
(9) Via under-dash fuse/relay box
(10) Via horn relay circuit in the relay control module
(11) Via second row seat heater relay and left second row seat heater switch
(12) Via second row seat heater relay
(13) Keihin PCM
(14) Continental PCM
NOTE: Check the label on the PCM to see if it was made by Keihin or Continental. Refer to the Fuel and Emissions Systems General Troubleshooting Information for more details.
Fig 1: Locating Main Under-Hood Fuse Box
G08055154Courtesy of AMERICAN HONDA MOTOR CO., INC.
UNDER-HOOD FUSE/RELAY BOX (RELAY CONTROL MODULE PART)

Fuse Number Amps Component(s) or Circuit(s) Protected
1 10A Left daytime running light
2 10A Right daytime running light
3 10A Headlight leveling control unit, Left headlight (high beam)
4 10A Right headlight (high beam)
5 7.5 A Front parking lights, Front side marker lights, License plate lights(4), Taillights(4), Rear side marker lights(4)
6 30 A Headlight low beam relay, No. 18 and No. 19 fuses (in the under-hood fuse/relay box)(1)
7 7.5 A PGM-FI subrelay, Radiator fan relay(5)
8 15A CKP sensor(2), CMP sensor(2), ETCS control relay(2), Ignition coil relay, Injectors(2), MAF sensor(2), No. 7 (7.5 A) fuse (in the under-hood fuse/relay box)(2), PCM (IGP)(2), PGM-FI main relay 1 (Fl MAIN), PGM-FI main relay 2 (FUEL PUMP)(2)
9 15A Ignition coils(6)
10 15A PCM (IG1 ETCS)(7)
11 15A EVAP canister vent shut valve(3), Front A/F sensor (bank 2, sensor 1)(3), Front secondary HO2S (bank 2, sensor 2)(3), Rear A/F sensor (bank 1, sensor 1)(3), Rear secondary HO2S (bank 1, sensor 2)(3)
(1) Via headlight low beam relay
(2) Via PGM-FI main relay 1 (FI MAIN)
(3) Via PGM-FI subrelay
(4) Via under-dash fuse/relay box and rear fuse/relay box
(5) Via A/C diode B
(6) Via ignition coil relay
(7) Via ETCS control relay
UNDER-HOOD FUSE/RELAY BOX (RELAY BLOCK PART)

Fuse Number Amps Component(s) or Circuit(s) Protected
12 40 A Front blower motor(2)
13 20 A Fog lights(3), Fog light relay
14 30 A Headlight washer motor(4), Headlight washer relay
15 30 A A/C condenser fan motor(6)
16 30 A A/C condenser fan motor(6), Radiator fan motor(7)
17 7.5 A A/C compressor clutch(8)
18 15A Left HID unit
19 15A Right HID unit
22 7.5 A Active damper system switch light(1), Ambient lights (Built into the roof console)(1), A/T gear position indicator panel light(1), BSI OFF switch light (USA models with BSI)(1), Climate control unit(1), Dashlights brightness controller light(1), Driver's ambient light(1), Driver's seat heater switch light (Without seat ventilation)(1), Driver's seat ventilation switch light (With seat ventilation)(1), Front passenger's ambient light(1), Front passenger's seat heater switch light (Without seat ventilation)(1), Front passenger's seat ventilation switch light (With seat ventilation)(1), Glove box light(1), Hazard warning switch light(1), Headlight washer switch light(1), Interior light relay(1), Left second row seat heater switch light(1), Moonroof switch light(1), Power mirror switch light(1), Rear climate control panel(1), Rear controller and screen (With rear entertainment)(1), Rear Individual map light switch lights(1), RES auxiliary jack assembly light (With rear entertainment)(1), Right second row seat heater switch light(1), Roof console switch light(1), Seat ventilation control unit(1), Steering wheel switch lights(1), VSA OFF switch light (Canada models without BSI or USA models)(1), VSA/BSI OFF switch light (Canada models with BSI)(1)
(1) Via interior light relay
(2) Via front blower motor relay
(3) Via fog light relay
(4) Via headlight washer relay
(5) Via A/C condenser fan relay
(6) Via radiator fan relay and fan control relay
(7) Via radiator fan relay
(8) Via A/C compressor clutch relay
Fig 2: Locating Under-Hood Fuse/Relay Box (Relay Control Module Part) And Under-Hood Fuse/Relay Box (Relay Block Part)
G08055155Courtesy of AMERICAN HONDA MOTOR CO., INC.
UNDER-DASH FUSE/RELAY BOX

Fuse Number Amps Component(s) or Circuit(s) Protected
1 7.5 A TPMS control unit
2 10A Driver's lumbar support motor(14)
3 15A Moonroof control unit/motor
4 20 A Driver's seat cushion blower motor (Via front seat heater relay)(1), Driver's seat heater (Via front seat heater relay and driver's seat heater switch)(2), Driver's seat heater switch indicators (Via front seat heater relay)(2), Driver's seat-back blower motor (Via front seat heater relay)(1), Front passenger's seat cushion blower motor (Via front seat heater relay)(1), Front passenger's seat-back blower motor (Via front seat heater relay)(1), Front passenger's seat heater (Via front seat heater relay and front passenger's seat heater switch)(2), Front passenger's seat heater switch indicators (Via front seat heater relay)(2)
5 10A AcuraLink control unit (XM receiver)(3), Audio unit(6), Audio-navigation unit(5), HandsFreeLink control unit, XM receiver(4)
6 7.5 A Driver's footwell light, Driver's vanity mirror light, Front individual map lights (Built into the roof console), Front passenger's footwell light, Passenger's vanity mirror light, Ignition key light, Left rear door courtesy light, Moonroof control unit/motor(15), Rear individual map light (2nd), Rear individual map light (3rd), Right rear door courtesy light
7 10A ACC unit, Climate control unit, Combination switch control unit, Data link connector (DLC), Center information display(6), Driver's MPCS unit, Gauge control module, Immobilizer-keyless control unit, MICU (VBU), Navigation display unit(5), Front passenger's MPCS unit, HFL-navigation microphone(5), Power tilt/telescopic steering control unit, Rear controller and screen(7), Relay control module, Rear MICU, Power tailgate control unit(16), Power seat control unit(16)
8 20 A MICU (+ B DOOR LOCK)
9 15A Front accessory power socket(17), Rear accessory power socket (Without rear entertainment)(17)
10 15A PCM (VBSOL2)
11 30 A Windshield wiper motor, Windshield wiper motor(18)
12 10A Subwoofer(5)
13 20 A Front passenger's power seat motor (Recline, Rear up-down)(19)
14 20 A Power seat control unit
15 20 A Power tilt/telescopic steering control unit
16 20 A Power seat control unit
17 20 A Front passenger's power seat motor (Slide, Front up-down)(19)
18 10A Alternator, ELD, Engine mount control solenoid valve, EVAP canister purge valve, PCM (VBSOL), PCM (BKSWNC)(20)
19 20 A PCM (IG1), Fuel pump control module(21), Immobilizer-keyless control unit
20 10A No. 2 fuse (in the auxiliary under-dash fuse holder 2), No. 2 fuse (in the auxiliary under-dash fuse holder 1)
21 7.5 A AcuraLink control unit (XM receiver)(3), Active damper control unit, Active damper system switch, Back-up lights(22), Brake light relay(8), Center information display(6), Combination switch control unit, Driver's MPCS unit, Electrical compass unit(16) (Without navigation), Gauge control module, MICU, Power seat control unit, Power tailgate control unit(16), Power tilt/telescopic steering control unit, Rear controller and screen(7), Rear MICU (Rear fuse/relay box), Relay control module, Shift lock solenoid, TECH relay, TPMS control unit
22 10A SRS unit
23 --- Not used
24 20 A Left rear power window motor(23)
25 20 A Right rear power window motor(24)
26 30 A Front passenger's MPCS unit
27 30 A Driver's MPCS unit
28 20 A Power tilt/telescopic steering control unit
29 10A Steering angle sensor, VSA modulator-control unit (IG1), Yaw rate-lateral/longitudinal acceleration sensor
30 10A AC inverter unit(7), Automatic dimming inside mirror(10), A/C compressor clutch relay (in the relay block), A/C condenser fan relay(3), Climate control unit, Fan control relay(3), Front blower motor relay (in the relay block), Front seat heater relay (in the under-dash fuse/relay box), MICU (IG2), Optional trailer connector (in the rear fuse/relay box), Rear blower motor relay, Rear climate control panel, Rear mode control motor, Rear window defogger relay (in the rear fuse/relay box), Rearview mirror with rearview camera display(6), Second row seat heater relay(9)
31 15A Headlight leveling control unit, Rear MICU (IG1 WASHER) (Rear fuse/relay box), Rear window washer motor relay circuit (in the relay control module), Windshield washer motor relay circuit (in the relay control module), Windshield wiper intermittent relay circuit (in the relay control module), Windshield wiper motor relay circuit (in the relay control module), Windshield/rear window washer motor (FR WASHER)(4), Windshield/rear window washer motor (RR WASHER)(6)
32 10A Accessory power socket relay, AcuraLink control unit (XM receiver)(3), Audio unit(6), Climate control unit, Key interlock solenoid, HFL-navigation microphone(6), Interface dial(5), MICU (ACC), HandsFreeLink control unit, Audio-navigation unit(6), Navigation display unit(5)
33 --- Not used
(1) With seat ventilation
(2) Without seat ventilation
(3) With AcuraLink
(4) Without AcuraLink
(5) With navigation
(6) Without navigation
(7) With rear entertainment
(8) With ACC
(9) With second row seat heater
(10) Without rearview mirror with rearview camera display
(11) Via A/C diode A (in the relay block)
(12) Via windshield washer motor relay circuit (in the relay control module)
(13) Via rear window washer motor relay circuit (in the relay control module)
(14) Via driver's lumbar support switch
(15) Via moonroof switch
(16) Via rear fuse/relay box
(17) Via accessory power socket relay
(18) Via windshield wiper motor relay circuit and windshield wiper motor intermittent relay circuit in the relay control module
(19) Via front passenger's power seat adjustment switch
(20) Via brake pedal position switch
(21) Via PGM-FI main relay 2
(22) Via MICU
(23) Via left rear power window switch
(24) Via right rear power window switch
Fig 3: Locating Under-Dash Fuse/Relay Box
G08055156Courtesy of AMERICAN HONDA MOTOR CO., INC.
AUXILIARY UNDER-HOOD FUSE/RELAY BOX

Fuse Number Amps Component(s) Protected
1 10 A ACC unit(1), Active damper control unit(1), BSI control unit(1), Driver's seat ventilation switch indicators(1), Front passenger's seat ventilation switch indicators(1), E-pretensioner unit(1), Left BSI radar unit(1), Millimeter wave radar(1), Right BSI radar unit(1), Seat ventilation control unit(2)
2 --- Not used
3 --- Not used
4 --- Not used
(1) Via TECH relay
(2) Via TECH relay, and via TECH relay and seat ventilation switches
Fig 4: Locating Auxiliary Under-Hood Fuse/Relay Box
G08055157Courtesy of AMERICAN HONDA MOTOR CO., INC.
AUXILIARY UNDER-DASH FUSE HOLDER 1

Fuse Number Amps Component(s) or Circuit(s) Protected
1 7.5 A PCM (STRLD)
2 7.5 A SH-AWD control unit (via under-dash fuse/relay box)
AUXILIARY UNDER-DASH FUSE HOLDER 2

Fuse Number Amps Component(s) or Circuit(s) Protected
1 7.5 A PCM (STS)
2 7.5 A ODS unit, Passenger's airbag cutoff indicator, SRS unit
Fig 5: Locating Auxiliary Under-Dash Fuse Holder 1 And Auxiliary Under-Dash Fuse Holder 2
G08055158Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 6: Locating Auxiliary Under-Dash Fuse Holder 1 And Auxiliary Under-Dash Fuse Holder 2
G08055159Courtesy of AMERICAN HONDA MOTOR CO., INC.
REAR FUSE/RELAY BOX

Fuse Number Amps Component(s) or Circuit(s) Protected
1 --- Not used
2 ---  
3 ---  
4 ---  
5 10A Cargo area accessory power socket relay (in the rear fuse/relay box), Cargo area accessory power socket(2)
6 20 A Power tailgate control unit
7 --- Not used
8 7.5 A Inside tailgate switch light, Rear MICU, Left tailgate light, Right tailgate light
9 --- Not used
10 30 A Rear window defogger(1), Noise reduction condenser (for rear window defogger)(1)
11 40 A Power tailgate control unit
(1) Via rear window defogger relay
(2) Via cargo area accessory power socket relay
Fig 7: Locating Rear Fuse/Relay Box
G08055160Courtesy of AMERICAN HONDA MOTOR CO., INC.
About FixVault