Infiniti G20 (P11). Manual — part 299
Wiring Diagram
NCEC0447
TEC726
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
FUEL PUMP
Wiring Diagram
EC-607
Diagnostic Procedure
NCEC0448
1
CHECK OVERALL FUNCTION
1. Turn ignition switch “ON”.
2. Pinch fuel feed hose with fingers.
SEF858X
Fuel pressure pulsation should be felt on the fuel feed hose for 5 seconds after ignition switch is turned “ON”.
OK or NG
OK
©
INSPECTION END
NG
©
GO TO 2.
2
CHECK POWER SUPPLY-I
1. Turn ignition switch “OFF”.
2. Disconnect fuel pump relay-1.
SEF185XA
3. Turn ignition switch “ON”.
4. Check voltage between fuel pump relay-1 terminal 1 and ground with CONSULT-II or tester.
SEF950X
OK or NG
OK
©
GO TO 4.
NG
©
GO TO 3.
FUEL PUMP
Diagnostic Procedure
EC-608
3
DETECT MALFUNCTIONING PART
Check the following.
I
15A fuse
I
Harness for open or short between fuse and fuel pump relay-1
©
Repair harness or connectors.
4
CHECK POWER SUPPLY-II
1. Check voltage between fuel pump relay-1 terminal 3 and ground with CONSULT-II or tester.
SEF951X
OK or NG
OK
©
GO TO 9.
NG
©
GO TO 5.
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
FUEL PUMP
Diagnostic Procedure (Cont’d)
EC-609
5
CHECK POWER SUPPLY-III
1. Turn ignition switch “OFF”.
2. Disconnect fuel pump relay-2.
SEF291WA
3. Check voltage between fuel pump relay-2 terminals 1, 3 and ground with CONSULT-II or tester.
SEF479P
Voltage: Battery voltage
OK or NG
OK
©
GO TO 7.
NG
©
GO TO 6.
6
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors E75, M6
I
15A fuse
I
Harness for open or short between fuse and fuel pump relay-2
©
Repair open circuit or short to ground or short to power in harness or connectors.
7
CHECK POWER SUPPLY-IV
1. Check continuity between fuel pump relay-2 terminal 5 and fuel pump relay-1 terminal 3, fuel pump relay-2 terminal 2
and body ground.
Refer to Wiring Diagram.
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK
©
GO TO 8.
NG
©
Repair open circuit or short to ground or short to power in harness or connectors.
FUEL PUMP
Diagnostic Procedure (Cont’d)
EC-610
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