Acura TSX / Honda Accord CL. Manual - part 488

Fig. 2: Locating Fuel Supply System Components (2 Of 2) 

FUEL PUMP CIRCUIT TROUBLESHOOTING 

If you suspect a problem with the fuel pump, check that the fuel pump actually runs; when it is on, you will hear 
some noise if you listen to the fuel fill port with the fuel fill cap removed. The fuel pump should run for 2 
seconds when the ignition switch is first turned on. If the fuel pump does not make noise, check as follows: 

1. Turn the ignition switch OFF.  

2. Remove the left kick panel (see TRIM REMOVAL/INSTALLATION - DOOR AREA ), then remove 

PGM-FI main relay 2 (FUEL PUMP) (A) from the under-dash fuse/relay box. 

 

2004 Acura TSX 

2004 ENGINES Fuel Supply System - TSX

  

 

Fig. 3: Removing PGM-FI Main Relay 2 (FUEL PUMP) 

3. Turn the ignition switch ON (II).  

4. Measure voltage between PGM-FI main relay 2 (FUEL PUMP) 4P connector terminal No. 3 and body 

ground. 

Is there battery voltage? 

YES: Go to step 5.  

NO: 

z

Replace PGM-FI main relay 1 (FI MAIN).  

z

Replace the under-dash fuse/relay box. 

 

2004 Acura TSX 

2004 ENGINES Fuel Supply System - TSX

  

 

Fig. 4: Measuring Voltage Between PGM-FI Main Relay 2 (FUEL PUMP) 4P Connector 
Terminal No. 3 & Body Ground 

5. Measure voltage between PGM-FI main relay 2 (FUEL PUMP) 4P connector terminal No. 1 and body 

ground. 

Is there battery voltage? 

YES: Go to step 6.  

NO: 

z

Replace the No. 19 FUEL PUMP (15A) fuse in the under-hood fuse/relay box.  

z

Replace the under-dash fuse/relay box. 

 

2004 Acura TSX 

2004 ENGINES Fuel Supply System - TSX

  

 

Fig. 5: Measuring Voltage Between PGM-FI Main Relay 2 (FUEL PUMP) 4P Connector 
Terminal No. 1 & Body Ground 

6. Turn the ignition switch OFF.  

7. Connect PGM-FI main relay 2 (FUEL PUMP) 4P connector terminal No. 4 to body ground with a jumper 

wire. 

 

2004 Acura TSX 

2004 ENGINES Fuel Supply System - TSX