C41" Fuel Pump Relay Circuit Malfunction - HYOSUNG COMET 250/R FI Service Manual

4-1-31 FI SYSTEM DIAGNOSIS

"C41" FUEL PUMP RELAY CIRCUIT MALFUNCTION

C41
DETECTED CONDITION
No voltage is applied to the both injectors for 3 sec.
after the contact of fuel pump relay is turned "ON"
position.
Or voltage is applied to the both injectors, when the
contact of fuel pump is "OFF" position.
▣ ▣ INSPECTION
◈ Step 1
1) Remove the frame cover.
2) Turn the ignition switch "OFF" position.
3) Check the fuel pump relay coupler for loose or
poor contacts.
If OK, then check the insulation and continuity.
Refer to page 4-2-6 for details.
Is the Fuel pump relay OK?
● GW wire open or shorted to
ground, or poor ②
● If wire and connection are OK,
intermittent trouble or faulty ECU.
YES
● Recheck each terminal and wire
harness for open circuit and poor
connection.
● Inspect the fuel injectors.
(Refer to page 4-1-28)
Replace the fuel pump relay with a
NO
new one.
CODE
CODE
� : Head lamp relay
� : Fuel pump relay
� : Main relay
� : Turn signal relay
connection.
[ 4 1 4
POSSIBLE CAUSE
● Fuel pump relay circuit open or short.
● Fuel pump relay malfunction.
● ECU malfunction.
�
�
40
CODE
CODE
1 4 1
�
�
�
�
②
ECU Coupler
]
�