2012 Acura TL BaseFACTORY OEM SERVICE PROCEDURE

Connector To Fuse/Relay Box Index

Under-Hood Fuse/Relay Box 

Fig 1: Identifying Under-Hood Fuse/Relay Box And Terminals
G08067458Courtesy of AMERICAN HONDA MOTOR CO., INC.
UNDER-HOOD FUSE/RELAY BOX

Socket Ref Terminal Connects to Notes
A (electrical load detector (ELD)) 12 3 Left engine compartment wire harness (engine compartment branch) (see CONNECTOR TO HARNESS INDEX ).  
A/C compressor clutch relay 16 4    
A/C condenser fan relay 2 4    
B (relay circuit board) 14 14 Left engine compartment wire harness (engine compartment branch) (see CONNECTOR TO HARNESS INDEX )  
Blower motor relay 1 4    
C (relay circuit board) 13 5 Left engine compartment wire harness (engine compartment branch) (see CONNECTOR TO HARNESS INDEX )  
ELD 11 3 Connector A (3P)  
Electronic throttle control system (ETCS) control relay 6 4    
Ignition coil relay 5 4    
PGM-FI main relay 1 3 4    
PGM-FI subrelay 4 4    
Rear window defogger relay 8 4    
Relay circuit board 15   Connector B (14P) and connector C (5P)  
Starter cut relay 2 7 4    
T101 9 - - Starter cable, M/T (see CONNECTOR TO HARNESS INDEX ), A/T (see CONNECTOR TO HARNESS INDEX )  
T102 10 - - Engine wire harness (engine section), M/T (see CONNECTOR TO HARNESS INDEX ), A/T (see CONNECTOR TO HARNESS INDEX ).  

Driver's Under-Dash Fuse/Relay Box 

Fig 2: Identifying Driver's Under-Dash Fuse/Relay Box And Terminals
G08067459Courtesy of AMERICAN HONDA MOTOR CO., INC.
DRIVER'S UNDER-DASH FUSE/RELAY BOX

Socket Ref Terminal Connects to Notes
A 1 - - Not used  
Accessory relay 4 4   (1)
B 2 2 Dashboard wire harness (view of driver's side) (see CONNECTOR TO HARNESS INDEX )  
C 3 5 Dashboard wire harness (view of driver's side) (see CONNECTOR TO HARNESS INDEX )  
D 11 16 Left side wire harness:
  
E 10 20 Left side wire harness:
  
F 9 33 Left engine compartment wire harness (dashboard branch) (see CONNECTOR TO HARNESS INDEX )  
Front accessory power socket relay 4 4   (2)
G 8 13 Left engine compartment wire harness (dashboard branch) (see CONNECTOR TO HARNESS INDEX )  
H (optional connector) 7 12    
K (MICU service check connector) 6 3    
M 13 4 Dashboard wire harness (view of driver's side) (see CONNECTOR TO HARNESS INDEX )  
N 14 16 Dashboard wire harness (view of driver's side) (see CONNECTOR TO HARNESS INDEX )  
P 15 20 Dashboard wire harness (view of driver's side) (see CONNECTOR TO HARNESS INDEX )  
PGM-FI main relay 2 12 4    
Q 17 20 Dashboard wire harness (view of driver's side) (see CONNECTOR TO HARNESS INDEX )  
R 16 24 Dashboard wire harness (view of driver's side) (see CONNECTOR TO HARNESS INDEX )  
Starter cut relay 1 5 4    
(1) With keyless access system
(2) Without keyless access system

Passenger's Under-Dash Fuse/Relay Box 

Fig 3: Identifying Passenger's Under-Dash Fuse/Relay Box And Terminals
G08067460Courtesy of AMERICAN HONDA MOTOR CO., INC.
PASSENGER'S UNDER-DASH FUSE/RELAY BOX

Socket Ref Terminal Connects to Notes
A 1 38 Dashboard wire harness (view of middle to passenger's side) (see CONNECTOR TO HARNESS INDEX )  
B 8 1 Right engine compartment wire harness (see CONNECTOR TO HARNESS INDEX )  
C 7 12 Not used  
D 2 28 Audio wire harness (see CONNECTOR TO HARNESS INDEX )  
E 6 18 Right engine compartment wire harness (see CONNECTOR TO HARNESS INDEX )  
F 5 2 Not used  
G 3 16 Right side wire harness (see CONNECTOR TO HARNESS INDEX ) (1)
H 4 38 Right side wire harness (see CONNECTOR TO HARNESS INDEX ) (2)
(1) Without SH-AWD
(2) With SH-AWD
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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