Acura TSX fuse box and relay Diagrams (2009-2014)

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.

MUST READ: DYI – How to Check Car Fuses?

(2009-2014) Acura TSX fuse box and relay with Diagram

Passenger compartment

1. Fuse Box No.1
2. Driver’s Junction Box No.1
3. Driver’s Junction Box No.2
4. 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

1. Audio/Navigation Switch Panel
2. Navigation Display Unit / Audio-HVAC Display Unit
3. Electronic Power Steering (EPS) Control Unit
4. Fuse Box No.2
5. Audio/Navigation Unit
6. 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	–	–

1. Tire Pressure Monitoring System (TPMS) Control Unit
2. Cargo Area Accessory Power Socket Relay
3. 3.5L (V6): ACC Cut Relay
4. Center Junction Box
5. ANC/Active Sound Control Unit (with Navigation)
6. HandsFreeLink Control Unit
7. ANC/Active Sound Control Unit (without Navigation)
8. Supplemental Restraint System (SRS) Unit
9. 3.5L (V6): IG2 Cut Relay
10. Console Accessory Power Socket Relay
11. Immobilizer-Keyless Control Unit

Engine Compartment

   2.4L (I4)

   3.5L (V6)

1. Fuse Box
2. Powertrain Control Module (PCM)
3. 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

1. ’09-’10: Navigation Unit
2. Moonroof Control Unit/Motor
3. AcuraLink Control Unit (XM Receiver)
4. Audio Amplifier
5. 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.