The Acura TL 1999-2003 is a luxurious mid-sized sedan manufactured by Honda under its Acura brand. It is a well-designed car with many advanced features and reliable performance. However, like any other vehicle, it is essential to keep its electrical system in top condition to prevent unexpected malfunctions. The electrical system of the Acura TL 1999-2003 comprises various components, including the fuse box, relays, and other electrical parts. In this article, we will take a closer look at the fuse box and relay of the Acura TL 1999-2003, discussing their functions and providing helpful tips to keep them in good working condition.
(1999-2003)Acura TL fuse box and relay with Diagram
Passenger compartment fuse box
acura tl 1999 2003 dashboard
Fuse Box No.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
Passenger Compartment Fuse Box No.1
acura tl 1999 2003 passenger compartment
No.
Amps
Assignment/Designation
1
15A
PGM-FI Main Relay, Supplemental Restraint System (SRS) Unit
2
10A
Supplemental Restraint System (SRS) Unit
3
7.5A
HVAC, Radiator Fan Control Module, Rear Window Defogger Relay, Fan Control Relay (Type S)
4
7.5A
ABS-TCS Control Unit, (except Type S), Power Mirror Defoggers, Power Mirrors, Option Connector S, Seat Heater Relay, VSA Control Unit (Type S)
5
7.5A
Daytime Running Lights (DRL) Control Unit
6
15A
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 (’99 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
7.5A
Occupant Position Detection System (OPDS) Unit (’00-’02), Shift Lock Relay (’99), Wiper/Washer (’99)
2002-2003: Power Window Control Unit (Driver’s Power Window)
2
20A
1999-2001: Driver’s Power Seat Adjustment Switch (Reclining)
20A
2002-2003: Power Seat Control Unit (Reclining)
3
20A
Seat Heater Relay
4
20A
1999-2001: Driver’s Power Seat Adjustment Switch (Slide)
20A
2002-2003: Power Seat Control Unit (Slide)
5
20A
Front Passenger’s Power Seat Adjustment Switch (Slide), Passenger’s Multiplex Control Unit
6
20A
Front Passenger’s Power Seat Adjustment Switch(Reclining)
7
20A
Left Rear Power Window Switch, Door Multiplex Control Unit (’02-03), Moonroof Close And Open Relays, Power Window Control Unit (’02-’03)
8
20A
Front Passenger’s Power Window Switch
9
20A
Accessory Power Socket Relay, Audio Unit, Front Accessory Power Socket, Rear Accessory Power Socket, Stereo Amplifier
10
10A
Daytime Running Lights (DRL) Control Unit, Navigation Display Unit, Navigation Relay (’99), Navigation Unit
11
7.5A
Ceiling Light, Driver’s and Front Passenger’s Door Courtesy Light, Passenger’s Multiplex Control Unit, Trunk Lid Opener Maint, Power Seat Control Unit (’02-2003), Spotlights, Trunk Light
12
20A
Climate Control Unit, Clock (except Navigation), Driver’s, Door, and Passenger’s Multiplex Control Unit, Driving Position Memory Switch (’02-’03), Gauge Assembly, Keyless Receiver Unit (’02-03), PCM (VBU), Radiator Fan Control Module (2002-’03), Security Indicator
13
7.5A
except for Type S: ABS-TCS Control Unit
14
7.5A
except Type S: ABS-TCS Control Unit
7.5A
Type S: A/C Compressor
15
20A
1999-2001: Door Multiplex Control Unit (Driver’s Power Window)
30A
2002-2003: Moonroof Close and Open Relays
16
Power Door Lock, Passenger’s Multiplex Control Unit, Trunk Lid Opener Main
Right Rear Power Window Switch
acura tl 1999 2003 passenger compartment relay 2
No.
Relay
R1
Power Window
R2
Accessory Socket
R3
Rear Window Defogger
Engine Compartment
acura tl 1999 2003 engine compartment
Relay Box No.1
Fuse Box
Relay Box No.2
Intermittent Wiper Relay
Relay Box No.3
Engine Compartment Fuse Box
acura tl 1999 2003 engine compartment fuse box
No.
Amps
Assignment/Designation
41
120A
Alternator, Battery, Power Distribution
42
60A
Ignition Switch (BAT)
43
20A
Right Headlight, Daytime Running Lights (DRL) Control Unit
44
–
–
45
20A
Left Headlight, Combination Light Switch (’02-’03), Daytime Running Lights (DRL) Control Unit, DRL Diode, Gauge Assembly, High Beam Cut Relay (DRL)
except Type S: A/C Compressor Clutch Relay, Condenser Fan Relay, Radiator Fan Control Module (’99-’01)
30A
Type S: A/C Compressor Clutch Relay, Condenser Fan Relay, Radiator Fan Control Module (’99-’01)
59
15A
Taillight Relay
•
–
–
Relay
R1
Headlight No. 1
R2
Headlight No. 2
R3
Horn
R4
A/C Condenser Fan
R5
Blower Motor
R6
Radiator Fan
R7
A/C Compressor Clutch
Engine Compartment Relay Box No.1 (1999-2001)
acura tl 1999 2001 engine compartment relay box 1
No.
Relay
R1
ABS Pump Motor
R2
ABS/TCS Fail-Safe
R3
TCS
Engine Compartment Relay Box No.2
acura tl 1999 2003 engine compartment relay box 2
No.
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
Engine Compartment Relay Box No.3 (2002-2003)
acura tl 2002 2003 engine compartment relay box 3
No.
Amps
Assignment/Designation
1
40A
ABS Motor
2
20A
ABS F/S
3
7.5A
ABS Motor Check
Relay
R1
ABS Pump Motor
In conclusion, the Acura TL 1999-2003 is a reliable car that offers great performance and comfort. Understanding the fuse box and relay system can help in identifying and solving electrical issues. It is essential to follow the manufacturer’s guidelines for maintaining the car’s electrical system to ensure a safe and smooth driving experience. With the help of the diagrams provided, troubleshooting and repairing the fuse box and relay system can be made easier for Acura TL owners.
