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Home >> Acura >> 2009 >> TSX Standard >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Fuses & Circuit Breakers (4-CYL) >> Fuse to Components Index >> Under-hood Fuse/Relay Box

Under-hood Fuse/Relay Box

FUSE NUMBER REFERENCE

Fuse Number Amps Component(s) or Circuit(s) Protected
1 MAIN 100 A Battery, Power supply
AS F/B 40 A No 8, No 9, No 10, No 11, No 12 and No 13 fuse in the passenger's under-dash fuse/relay box
2 2-1 EPS 70 A EPS control unit
2-2 AS F/B OP 40 A No 14, No 15, No 16, No 18 and No 19 fuse in the passenger's under-dash fuse/relay box
2-3 VSA FSR 30 A VSA modulator-control unit (FSR)
2-4 - 40 A Not used
2-5 VSA MTR 30 A VSA modulator-control unit (MTR)
2-6 - 30 A Not used
3 3-1 IG MAIN 50 A Ignition switch
3-2 - 40 A Not used
3-3 AS LT MAIN 30 A No 1, No 2, No 3, No 4 and No 5 fuse in the passenger's under-dash fuse/relay box
3-4 DR F/B 60 A No 19, No 20, No 21, No 22, No 23, No 24 and No 25 fuse in the driver's under-dash fuse/relay box
3-5 DR LT MAIN 30 A No 26, No 27, No 28, No 29 and No 30 fuse in the driver's under-dash fuse/relay box
3-6 MAIN FAN MTR 30 A ECM/PCM, Radiator fan, Radiator fan motor
3-7 - 30 A Not used
3-8 WIP MTR 30 A Driver's MICU, Wiper motor relay circuit, Wiper motor intermittent relay circuit and Wiper motor HI/LOW relay circuit in the relay circuit board, Wiper motor
4 40 A Condensers, Rear window defogger relay, Rear window defogger
5 20 A A/C condenser fan relay circuit in the relay circuit board, A/C condenser fan motor
6 - Not used
7 - Not used
8 40 A Blower motor relay, Blower motor
9 15A Driver's MICU, Hazard warning switch
10 10A Driver's under-dash fuse/relay box, Horn relay, Horns
11 - Not used
12 15A Brake pedal position switch
13 15A Ignition coil relay, Ignition coils
14 15A A/F sensor, ECM/PCM (SUB RLY), PGM-FI subrelay
15 10A AcuraLink control unit(3) and AcuraLink control unit (XM receiver)(3), Audio/Navigation switch panel, Audio unit, Audio-HVAC display unit(2), Data link connector (DLC), Driver's door courtesy light, Driver's MICU, Front passenger's door courtesy light, Gauge control module, HandsFreeLink control unit(1), HFL/navigation microphone(1), Immobilizer-keyless control unit, Navigation display unit(1), Navigation unit(1), Passenger's MICU, Power window master switch, Power seat control unit
16 75A Ceiling light, Ignition key light, Individual map light, Left rear door courtesy light, Right rear door courtesy light, Trunk light, Vanity mirror lights
17 15A CKP sensor, CMP sensor B, ECM/PCM (ETCSRLY), ECM/PCM (IGP), ECM/PCM (IMOFPR), ECM/PCM (MRLY), ETCS control relay, Injectors, MAF sensor, PGM-FI main relay 1 (Fl MAIN), PGM-FI main relay 2 (FUEL PUMP)
18 15A ECM/PCM (VBETCS), ETCS control relay
19 - Not used
20 75A A/C compressor clutch relay, A/C compressor clutch
21 75A A/C condenser fan relay circuit, ECM/PCM
(1) With navigation system
(2) Without navigation system
(3) USA models with navigation
Fig 1: Identifying Under-Hood Fuse And Relay Box
G05994848Courtesy of AMERICAN HONDA MOTOR CO., INC.