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Fuse box diagrams (layout, location, function, assignment) in the cabin and engine compartment of Acura TL (1999, 2000, 2001, 2002, 2003).
Checking and Replacing Fuses
If something electrical in your car stops working, the first thing you should check for is a blown fuse. Determine from the chart or the diagram on the fuse box lid, which fuse or fuses control that component. Check those fuses first, but check all the fuses before deciding that a blown fuse is not the cause. Replace any blown fuses and check the component’s operation.
- Turn the ignition switch to LOCK (0). Make sure the headlights and all other accessories are off.
- Remove the cover from the fuse box.
- Check each of the large fuses in the under-hood fuse box by looking through the top at the wire inside.
- Check the smaller fuses in the under-hood fuse box and all the fuses in the interior fuse boxes by pulling out each fuse with the fuse puller provided in the under-hood fuse box.
- Look for a burned wire inside the fuse. If it is burned, replace it with one of the spare fuses of the same rating or lower.
If you cannot drive the car without fixing the problem, and you do not have a spare fuse, take a fuse of the same rating or a lower rating from one of the other circuits. Make sure you can do without that circuit temporarily (such as the accessory power socket or radio). If you replace the blown fuse with a spare fuse that has a lower rating, it might blow out again. This does not indicate anything wrong. Replace the fuse with one of the correct rating as soon as you can. - If the replacement fuse of the same rating blows in a short time, there is probably a serious electrical problem in your car. Leave the blown fuse in that circuit and have your car checked by a qualified mechanic.
Note
Replacing a fuse with one that has a higher rating greatly increases the chances of damaging the electrical system. If you do not have a replacement fuse with the proper rating for the circuit, install one with a lower rating.
Passenger Compartment Overview
- Fuse Box №1
- Driver’s Multiplex Control Unit
- Moon Roof Close Relay
- Moon Roof Open Relay
- PGM-FI Main Relay
- Cruise Control Unit
- Daytime Running Light Control Unit
- Supplemental Restraint System (SRS) Unit
- BOSE Equalizer Unit
- Powertrain Control Module (PCM)
- Fuse Box №2
- Navigation Relay
High Beam Cut Relay (with Daytime Running Light (1999-2001)) - 1999-2001: Taillight Relay
2002-2003: Navigation Relay - ABS/TCS Control Unit
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Passenger Compartment Fuse Box №1 Diagram
The interior fuse boxes are located on each side of the dashboard. To open an interior fuse box, open the car door. Pull the bottom of the cover open, then take it out of its side hinges by pulling it toward you.
| № | A | Protected Component |
|---|---|---|
| 1 | 15 | PGM-FI Main Relay, Supplemental Restraint System (SRS) Unit |
| 2 | 10 | Supplemental Restraint System (SRS) Unit |
| 3 | 7.5 | HVAC, Radiator Fan Control Module, Rear Window Defogger Relay, Fan Control Relay (Type S) |
| 4 | 7.5 | ABS-TCS Control Unit, (except Type S), Power Mirror Defoggers, Power Mirrors, Option Connector S, Seat Heater Relay, VSA Control Unit (Type S) |
| 5 | 7.5 | Daytime Running Lights (DRL) Control Unit |
| 6 | 15 | Charging System, Cruise Control, Electrical Load Detector (ELD) Unit, Engine Mount Control System, Evaporative Emission Control System, PCM (VBSOL), Primary and Secondary Heated Oxygen Sensor (HO2S), Radiator Fan Control Module, VSP Sensor (1999 with Navigation), Cruise Control/TCS Switch (except Type S) or Cruise Control/VSA Off Switch (Type S) Indicator Light, Intake Manifold Runner Control (IMRC) Module (Type S), VSA Control Unit (Type S) |
| 7 | 7.5 | Occupant Position Detection System (OPDS) Unit (2000-2002), Shift Lock Relay (1999), Wiper/Washer (1999) |
| 8 | 7.5 | Accessory Power Socket Relay, Navigation System, Option Connector R, Shift Lock Solenoid |
| 9 | 7.5 | Automatic Dimming Inside Mirror, Brake Light Failure Sensor, Clock (without Navigation), Driver’s and Passenger’s Multiplex Control Units, Daytime Running Lights (DRL) Indicator, Gauge Assembly, Reverse Relay, Shift Lock Relay (2000-2002) |
| 10 | 7.5 | Turn Signal/Hazard Relay |
| 11 | 15 | Ignition Coils |
| 12 | 30 | Wiper/Washer |
| 13 | 7.5 | Starter Signal, PGM-FI Main Relay, Powertrain Control Module (PCM) |
| R1 | Starter Cut | |
| R2 | Reverse | |
| R3 | Turn Signal/Hazard | |
Passenger Compartment Fuse Box №2 Diagram
| № | A | Protected Component |
|---|---|---|
| 1 | 30 | 1999-2001: Moonroof Close and Open Relays |
| 20 | 2002-2003: Power Window Control Unit (Driver’s Power Window) | |
| 2 | 20 | 1999-2001: Driver's Power Seat Adjustment Switch (Reclining) |
| 20 | 2002-2003: Power Seat Control Unit (Reclining) | |
| 3 | 20 | Seat Heater Relay |
| 4 | 20 | 1999-2001: Driver's Power Seat Adjustment Switch (Slide) |
| 20 | 2002-2003: Power Seat Control Unit (Slide) | |
| 5 | 20 | Front Passenger’s Power Seat Adjustment Switch (Slide), Passenger’s Multiplex Control Unit |
| 6 | 20 | Front Passenger’s Power Seat Adjustment Switch(Reclining) |
| 7 | 20 | Left Rear Power Window Switch, Door Multiplex Control Unit (2002-2003), Moonroof Close And Open Relays, Power Window Control Unit (2002-2003) |
| 8 | 20 | Front Passenger’s Power Window Switch |
| 9 | 20 | Accessory Power Socket Relay, Audio Unit, Front Accessory Power Socket, Rear Accessory Power Socket, Stereo Amplifier |
| 10 | 10 | Daytime Running Lights (DRL) Control Unit, Navigation Display Unit, Navigation Relay (’99), Navigation Unit |
| 11 | 7.5 | Ceiling Light, Driver’s and Front Passenger’s Door Courtesy Light, Passenger’s Multiplex Control Unit, Trunk Lid Opener Maint, Power Seat Control Unit (2002-2003), Spotlights, Trunk Light |
| 12 | 20 | Power Door Lock, Passenger's Multiplex Controlu Unit, Trunk Lid Opener Main |
| 13 | 7.5 | Climate Control Unit, Clock (except Navigation), Driver’s, Door and Passenger’s Multiplex Control Unit, Driving Position Memory Switch (2002-2003), Gauge Assembly, Keyless Receiver Unit (2002-2003), PCM (VBU), Radiator Fan Control Module (2002-2003), Security Indicator |
| 14 | 7.5 | except Type S: ABS-TCS Control Unit |
| 7.5 | Type S: A/C Compressor | |
| 15 | 20 | 1999-2001: Door Multiplex Control Unit (Driver’s Power Window) |
| 30 | 2002-2003: Moonroof Close and Open Relays | |
| 16 | 20 | Right Rear Power Window Switch |
| R1 | Power Window | |
| R2 | Accessory Socket | |
| R3 | Rear Window Defogger | |
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Engine Compartment Overview
- Relay Box №1
- Fuse Box
- Relay Box №2
- Intermittent Wiper Relay
- Relay Box №3
Engine Compartment Fuse Box Diagram
The under-hood fuse box is located in the back of the engine compartment on the passenger’s side. To open it, push the tabs.
| № | A | Protected Component |
|---|---|---|
| 41 | 120 | Alternator, Battery, Power Distribution |
| 42 | 60 | Ignition Switch (BAT) |
| 43 | 20 | Right Headlight, Daytime Running Lights (DRL) Control Unit |
| 44 | - | - |
| 45 | 20 | Left Headlight, Combination Light Switch (2002-2003), Daytime Running Lights (DRL) Control Unit, DRL Diode, Gauge Assembly, High Beam Cut Relay (DRL) |
| 46 | 15 | Data Link Connector (DLC), PGM-FI Main Relay |
| 47 | 20 | Brake Pedal Position Switch, Horn Relay, Ignition Key Switch/Key Light, Security Horn Relay (’99) |
| 48 | 20 | ABS Fail-Safe Relay (1999-2001), TCS Relay (except Type S) (2002-2003), VSA Relay (Type S) (2002-2003) |
| 49 | 15 | Hazard Warning Switch |
| 50 | 30 | 1999-2001: ABS Pump Motor Relay |
| 20 | Type S: VSA Throttle Motor Relay | |
| 51 | 40 | Power Window Motor , Power Window Relay |
| 52 | 20 | 1999-2001: TCS Fail-Safe Relay |
| 20 | 2002-2003: Fog Light Relay | |
| 53 | 40 | Rear Window Defogger Relay |
| 54 | 40 | Fuse (Passenger Compartment Fuse Box No.2): No. 9, 10, 11, 12, 13 |
| 55 | 40 | Fuse (Passenger Compartment Fuse Box No.1): No. 2, 3, 4, 5, 6 |
| 56 | 40 | Blower Motor Relay |
| 57 | 20 | except Type S: Radiator Fan Relay |
| 30 | Type S: Radiator Fan Relay | |
| 58 | 20 | except Type S: A/C Compressor Clutch Relay, Condenser Fan Relay, Radiator Fan Control Module (1999-2001) |
| 30 | Type S: A/C Compressor Clutch Relay, Condenser Fan Relay, Radiator Fan Control Module (1999-2001) | |
| 59 | 15 | Taillight Relay |
| • | - | - |
| R1 | Headlight №1 | |
| R2 | Headlight №2 | |
| R3 | Horn | |
| R4 | A/C Condenser Fan | |
| R5 | Blower Motor | |
| R6 | Radiator Fan | |
| R7 | A/C Compressor Clutch | |
Engine Compartment Relay Boxes
№1 (1999-2001)
| № | Relay |
|---|---|
| R1 | ABS Pump Motor |
| R2 | ABS/TCS Fail-Safe |
| R3 | TCS |
№2
| №. | Relay |
|---|---|
| R1 | Shift Lock |
| R2 | 2002-2003: Taillight |
| R3 | 2002-2003: Seat Heater |
| 1999-2001: Security Horn | |
| R4 | 2002-2003: High Beam Cut Relay (Daytime Running Light) |
| 1999-2001: Seat Heater |
№3 (2002-2003)
| № | A | Protected Component |
|---|---|---|
| 1 | 40 | ABS Motor |
| 2 | 20 | ABS F/S |
| 3 | 7.5 | ABS Motor Check |
| R1 | ABS Pump Motor | |
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