The Acura TSX 2009-2014 is a popular entry-level luxury car that comes with a range of advanced electrical components. These electrical components play a vital role in ensuring the smooth and safe operation of the car, and it is important for owners to have a good understanding of them. In this article, we will take a closer look at some of the electrical components in the Acura TSX 2009-2014, including the fuse box and relay.
Fuse Box
The fuse box is a critical component in the Acura TSX 2009-2014’s electrical system. It houses a range of fuses that protect the electrical circuits in the car from damage due to power surges, short circuits, and other electrical faults. The fuse box in the Acura TSX 2009-2014 is located on the driver’s side of the dashboard, behind the cover.
It is important for owners to regularly check the fuses in the fuse box and replace them if necessary. A blown fuse can cause a range of problems, including malfunctioning electrical components or even a complete failure of the car. The Acura TSX 2009-2014 owner’s manual provides detailed information on the location and function of each fuse in the car, making it easy for owners to identify and replace any blown fuses.
Relay
The relay is another critical component in the Acura TSX 2009-2014’s electrical system. It is an electronic switch that controls the flow of electricity to various electrical components in the car, such as the starter motor, fuel pump, and headlights. The relay in the Acura TSX 2009-2014 is located in the engine compartment, near the battery.
(2009-2014) Acura TSX fuse box and relay with Diagram
Passenger compartment
- Fuse Box No.1
- Driver’s Junction Box No.1
- Driver’s Junction Box No.2
- Gauge Control Module
Passenger Compartment Fuse Box No.1
| No. | Amps | Assignment/Designation |
| 1 | – | – |
| 2 | 7.5A | Power Seat Control Unit |
| 3 | 15A | Windshield Washer Motor, Washer Motor Relay |
| 4 | 10A | Wiper Motor Relay |
| 5 | 7.5A | AcuraLink Control Unit (XM Receiver), Automatic Dimming Inside Mirror, Automatic Dimming Inside Mirror, Back-Up Lights, Driver’s Multiplex Integrated Control Unit (MICU), Electrical Compass Unit, Gauge Control Module, Passenger’s Multiplex Integrated Control Unit (MICU) (IG1), Power Tailgate Control Unit, Reverse Relay, Shift Lock Solenoid, Tire Pressure Monitoring System (TPMS) Control Unit Control Unit, Transmission Range Switch |
| 6 | 7.5A | Electronic Power Steering (EPS) Control Unit, VSA Modulator-Control Unit, Yaw Rate-Lateral Acceleration Sensor |
| 7 | 15A | 2.4L (I4): Alternator, Camshaft Position (CMP) Sensor A, Brake Pedal Position Switch, Electrical Load Detector (ELD), Engine Mount Control Solenoid Valve, Evaporative Emission Control (EVAP) Canister Purge Valve, Reverse Lockout Solenoid Valve, Secondary Heated Oxygen Sensor (HO2S) |
| 15A | 3.5L (V6): Alternator, Electrical Load Detector (ELD), Engine Mount Control Solenoid Valve, Evaporative Emission Control (EVAP) Canister Purge Valve, Brake Pedal Position Switch, PCM (VBSOL) | |
| 8 | 7.5A | – |
| 9 | 20A | ECM/PCM, Fuel Pump, Immobilizer-Keyless Control Unit, PGM-FI Main Relay No.2 |
| 10 | 10A | ECM/PCM (VBSOL) |
| 11 | 10A | Supplemental Restraint System (SRS) Unit |
| 12 | 7.5A | Front Passenger’s Airbag Cutoff Indicator, Occupant Detection System (ODS) Unit, Supplemental Restraint System (SRS) Unit |
| 13 | 7.5A | 3.5L (V6): PCM (STS), Starter |
| 14 | – | – |
| 15 | 7.5A | Daytime Running Light |
| 16 | 7.5A | A/C Compressor Clutch Relay, A/C Condenser Fan Relay, Audio-HVAC Display Unit, Audio-Navigation Switch Panel, Blower Motor Relay, Climate Control Unit, Door Multiplex Control Unit (Power Window Master Switch), Driver’s Seat Heater Switch, Fan Control Relay, Front Passenger’s Seat Heater Switch. Power Mirror Switch, Radiator Fan Relay, Rear Window Defogger Relay |
| 17 | 7.5A | Driver’s Multiplex Integrated Control Unit (MICU) (ACC Key Lock) |
| 18 | 7.5A | AcuraLink Control Unit (XM Receiver), Audio Unit, Audio-Navigation Unit, Cargo Area Accessory Power Socket Relay (Sport Wagon), Console Accessory Power Socket Relay, Front Accessory Power Socket Relay, HandsFreeLink Control Unit, Interface Dial, HFL-Navigation-ANC/Active Sound Control Microphone, Key Interlock Solenoid, Navigation Display Unit |
| 19 | 20A | Driver’s Seat Front Up-Down Motor, Driver’s Power Seat Adjustment Switch, Power Seat Control Unit, Driver’s Seat Slide Motor |
| 20 | 20A | Moonroof Control Unit/Motor |
| 21 | 20A | Driver’s Seat Rear Up-Down Motor, Driver’s Power Seat Adjustment Switch, Power Seat Control Unit, Driver’s Seat Recline Motor |
| 22 | 20A | Left Rear Power Window Relay, Left Rear Power Window Switch |
| 23 | 20A | Front Accessory Power Socket (Front Accessory Power Socket Relay) |
| 24 | 20A | Driver’s Power Window – Power Window Master Switch (Door Multiplex Control Unit) |
| 25 | 15A | Power Door Lock, Driver’s Door Lock Actuator, Fuel Fill Door Lock Actuator, Left Rear Door Lock Actuator, Power Door Lock Relay, Trunk Lid Release Actuator Relay |
| 26 | 10A | Front Left Fog Ligh |
| 27 | 10A | Left Front Parking/Side Marker Light, Left Taillight, License Plate Lights, Right Taillight, Taillight Relay, Driver’s Multiplex Integrated Control Unit (MICU) |
| 28 | 10A | Left Headlight High Beam |
| 29 | 10A | Tire Pressure Monitoring System (TPMS) Control Unit |
| 30 | 15A | Left Headlight Low Beam |
| 31 | – | – |
| Relay | ||
| R1 | PGM-FI Main No.2 | |
| R2 | Front Accessory Power Socket | |
| R3 | Starter Cut No.1 | |
- Audio/Navigation Switch Panel
- Navigation Display Unit / Audio-HVAC Display Unit
- Electronic Power Steering (EPS) Control Unit
- Fuse Box No.2
- Audio/Navigation Unit
- Climate Control Unit
Passenger Compartment Fuse Box No.2
| No. | Amps | Assignment/Designation |
| 1 | 10A | Right Headlight High Beam |
| 2 | 10A | Right Front Parking/Side Marker Light, Taillight Relay |
| 3 | 10A | Fog Light Relay, Right Front Fog Light |
| 4 | 15A | Right Headlight Low Beam |
| 5 | – | – |
| 6 | 7.5A | A/T Gear Position Indicator Panel Light (A/T), Ambient Light, Audio-Navigation Switch Panel, Audio-Navigation Unit, Audio-HVAC Display Unit, Audio Remote Switch, Audio Unit, Center Pocket Light, Climate Control Unit Light, Driver’s Footwell Light, Driver’s Seat Heater Switch Light, Front Passenger’s Airbag Cutoff Switch Light, Front Passenger’s Footwell Light, Front Passenger’s Seat Heater Switch Light, Glove Box Light, Hazard Warning Switch Light, HomeLink Unit, Moonroof Switch Light, Navigation Display Unit, Steering Wheel Switch Lights, VSA OFF Switch Light, Audio Remote Switch |
| 7 | – | – |
| 8 | 20A | Front Passenger’s Power Recline Seat Motor, Front Passenger’s Power Seat Adjustment Switch |
| 9 | 20A | Front Passenger’s Power Slide Seat Motor, Front Passenger’s Power Seat Adjustment Switch |
| 10 | 10A | Power Door Lock, Front Passenger’s Door Lock Actuator, Power Door Lock Relay, Right Rear Door Lock Actuator |
| 11 | 20A | Right Rear Power Window Relay, Right Rear Power Window Switch, Right Rear Power Window Motor |
| 12 | 20A | Console Accessory Power Socket, Console Accessory Power Socket Relay |
| 13 | 20A | Front Passenger’s Power Window Switch |
| 14 | – | – |
| 15 | 20A | Stereo Amplifier, Subwoofer, Active Noise Cancellation Unit |
| 16 | 20A | Sport Wagon: Cargo Area Accessory Power Socket, Cargo Area Accessory Power Socket Relay |
| 17 | – | – |
| 18 | 10A | – |
| 19 | 20A | Driver’s Seat Heater, Driver’s Seat Heater Relay, Front Passenger’s Seat Heater, Passenger’s Seat Heater Relay |
| 20 | – | – |
| 21 | – | – |
| 22 | – | – |
- Tire Pressure Monitoring System (TPMS) Control Unit
- Cargo Area Accessory Power Socket Relay
- 3.5L (V6): ACC Cut Relay
- Center Junction Box
- ANC/Active Sound Control Unit (with Navigation)
- HandsFreeLink Control Unit
- ANC/Active Sound Control Unit (without Navigation)
- Supplemental Restraint System (SRS) Unit
- 3.5L (V6): IG2 Cut Relay
- Console Accessory Power Socket Relay
- Immobilizer-Keyless Control Unit
Engine Compartment
2.4L (I4)
3.5L (V6)
- Fuse Box
- Powertrain Control Module (PCM)
- VSA Modulator Control Unit
Engine Compartment Fuse Box
| No. | Amps | Assignment/Designation |
| 1.1 | 100A | 2.4L (I4): Battery, Power Supply |
| 120A | 3.5L (V6): Battery, Power Supply | |
| 1.2 | 40A | Fuse (Passenger Compartment Fuse Box No.2): No. 8, 9, 10, 11, 12, 13 |
| 2.1 | 70A | Electronic Power Steering (EPS) Control Unit |
| 2.2 | 40A | 2.4L (I4): Fuse (Passenger Compartment Fuse Box No.2): No. 14, 15, 16, 17, 18, 19 |
| 40A | 3.5L (V6): Fuse (Passenger Compartment Fuse Box No.2): No. 15, 19 | |
| 2.3 | 30A | VSA Modulator Control Unit |
| 2.4 | 40A | Sport Wagon: Power Tailgate Control Unit |
| 2.5 | 30A | VSA Modulator Control Unit |
| 2.6 | – | – |
| 3.1 | 50A | 2.4L (I4): Ignition Switch |
| 50A | 3.5L (V6): Ignition Switch, Fuse (Engine Compartment Fuse Box): No. 8 | |
| 3.2 | – | – |
| 3.3 | 30A | 2.4L (I4): Fuse (Passenger Compartment Fuse Box No.2): No. 1, 2, 3, 4, 5 |
| 30A | 3.5L (V6): Fuse (Passenger Compartment Fuse Box No.2): No. 1, 2, 3, 4 | |
| 3.4 | 60A | Fuse (Passenger Compartment Fuse Box No.1): No. 19, 20, 21, 22, 23, 24, 25 |
| 3.5 | 30A | Fuse (Passenger Compartment Fuse Box No.1): No. 26, 27, 28, 29, 30 |
| 3.6 | 30A | Radiator Fan Motor (Radiator Fan Relay) |
| 3.7 | 30A | 3.5L (V6): Wiper Motor Relay, Wiper Motor Intermittent Relay, Wiper Motor HI/LOW Relay, Windshield Wiper Motor |
| 3.8 | 30A | 2.4L (I4): Wiper Motor Relay, Wiper Motor Intermittent Relay, Wiper Motor HI/LOW Relay, Windshield Wiper Motor |
| 30A | 3.5L (V6): A/C Condenser Fan Relay, A/C Condenser Fan Motor | |
| 4 | 40A | Condensers, Rear Window Defogger Relay, Rear Window Defogger |
| 5 | 20A | 2.4L (I4): A/C Condenser Fan Relay, A/C Condenser Fan Motor |
| 6 | – | – |
| 7 | 20A | Sport Wagon: Power Tailgate Control Unit |
| 8 | 40A | Blower Motor, Blower Motor Relay |
| 9 | 15A | Hazard Warning Switch, Driver’s Multiplex Integrated Control Unit (MICU) |
| 10 | 10A | Horn Relay, Horns |
| 11 | – | – |
| 12 | 15A | Brake Pedal Position Switch |
| 13 | 15A | Ignition Coil Relay, Ignition Coils |
| 14 | 15A | 2.4L (I4): Air Fuel Ratio (A/F) Sensor (Sensor 1), Evaporative Emission Control (EVAP) Canister Vent Shut Valve, PGM-FI Subrelay, Fuse (Engine Compartment Fuse Box): No. 21 |
| 15A | 3.5L (V6): Evaporative Emission Control (EVAP) Canister Vent Shut Valve, Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1), Front Secondary Heated Oxygen Sensor (HO2S), PGM-FI Subrelay, Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1), Rear Secondary Heated Oxygen Sensor (HO2S) (Bank 1, Sensor 2), Fuse (Engine Compartment Fuse Box): No. 21 | |
| 15 | 10A | AcuraLink Control Unit (XM Receiver), Audio-Navigation Switch Panel, Audio Unit, Audio-HVAC Display Unit, Audio-Navigation Unit, Data Link Connector (DLC), Driver’s Door Courtesy Light, Driver’s MICU (VBU), Front Passenger’s Door Courtesy Light, Gauge Control Module, HandsFreeLink Control Unit, HFL-navigation Microphone, Immobilizer-Keyless Control Unit, Navigation Display Unit, Passenger’s MICU (VBU), Power Tailgate Control Unit, Power Window Master Switch, Power Seat Control Unit |
| 16 | 7.5A | Ceiling Light, Front Individual Map Light, Ignition Key Light, Inside Tailgate Switch, Left Rear Door Courtesy Light, Right Rear Door Courtesy Light, Trunk Light, Vanity Mirror Lights |
| 17 | 15A | Crankshaft Position (CKP) Sensor, Camshaft Position (CMP) Sensor B, ECM/PCM (IGP), Electronic Throttle Control System (ETCS) Control Relay, Injectors, Mass Airflow (MAF) Sensor, PGM-FI Main Relay No.1, PGM-FI Main Relay No.2 |
| 18 | 15A | ECM/PCM (VBETCS), Electronic Throttle Control System (ETCS) Control Relay |
| 19 | – | – |
| 20 | 7.5A | A/C Compressor Clutch, A/C Compressor Clutch Relay |
| 21 | 7.5A | 2.4L (I4): A/C Condenser Fan Relay |
| 7.5A | 3.5L (V6): Radiator Fan Relay | |
| Relay | ||
| R1 | Blower Motor | |
| R2 | Horn | |
| R3 | PGM-FI Main No.1 | |
| R4 | PGM-FI Sub | |
| R5 | Ignition Coil | |
| R6 | Electronic Throttle Control System (ETCS) Control | |
| R7 | 3.5L (V6): Starter Cut No.2 | |
| 2.4L (I4): Radiator Fan | ||
| R8 | Rear Window Defogger | |
| R9 | A/C Compressor Clutch | |
- ’09-’10: Navigation Unit
- Moonroof Control Unit/Motor
- AcuraLink Control Unit (XM Receiver)
- Audio Amplifier
- Electrical Compass Unit
In conclusion, the Acura TSX 2009-2014 is an exceptional luxury sedan that boasts advanced features and a sleek design. Its electrical system comprises various components, including the fuse box and relay, which are essential for the proper functioning of the vehicle. Understanding the functioning of these components can help car owners diagnose and repair electrical faults, thereby ensuring the smooth performance of their Acura TSX.
