Fuel Pump Circuit Inspection: Troubleshooting

CAUTION: Check to make sure that connection is made between correct terminals. Wrong connection can cause damage to ECM, wire harness etc.

TROUBLESHOOTING CHART

Step	Action	Yes	No
1	Fuel pump operation check Remove fuel filler cap. Turn ON ignition switch. Is fuel pump operation sound heard for 3 sec. after ignition switch ON?	Fuel pump circuit is in good condition.	Go to Step 2.
2	Fuel pump circuit check With ignition switch OFF, remove fuel pump relay (1) from connector. Check for proper connection to relay at each terminal. If OK, using service wire (2), connect terminals "PNK/BLK" wire terminal and "BLU/BLK" wire terminal of relay connector. Is fuel pump heard to operate at ignition switch ON?	Go to Step 3.	"BLU/BLK", "PNK/BLK" or "BLK" circuit open or fuel pump malfunction.
3	Fuel pump relay check Check fuel pump relay referring to "FUEL PUMP RELAY INSPECTION ". Is it in good condition?	"BLK/WHT" or "WHT/GRN" circuit open.	Replace fuel pump.

Step

Action

Yes

Fuel pump operation check

Is fuel pump operation sound heard for 3 sec. after ignition switch ON?

Fuel pump circuit is in good condition.

Go to Step 2.

Fuel pump circuit check

With ignition switch OFF, remove fuel pump relay (1) from connector.
Check for proper connection to relay at each terminal.
If OK, using service wire (2), connect terminals "PNK/BLK" wire terminal and "BLU/BLK" wire terminal of relay connector.

Is fuel pump heard to operate at ignition switch ON?

Go to Step 3.

"BLU/BLK", "PNK/BLK" or "BLK" circuit open or fuel pump malfunction.

Fuel pump relay check

Is it in good condition?

"BLK/WHT" or "WHT/GRN" circuit open.

Replace fuel pump.