Nissan Almera Tino V10. Manual — part 650
EC-1426
[YD (WITHOUT EURO-OBD)]
DTC P0628, P0629 FUEL PUMP
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis Logic
EBS014XU
DTC Confirmation Procedure
EBS014XV
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1.
Start engine and warm it up to normal operating temperature.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Let engine idle for at least 5 seconds.
4.
If DTC is detected, go to
EC-1428, "Diagnostic Procedure"
.
29
L
Fuel pump
[Engine is running]
●
Warm-up condition
●
Idle speed
0.5 - 1.0V
[Engine is running]
●
Warm-up condition
●
Engine speed is 2,000 rpm
0.5 - 1.0V
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA
(DC Voltage and Pulse Signal)
MBIB0887E
MBIB0888E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0628
Fuel pump control circuit
low input
ECM detects a control circuit for the fuel pump
is open or short to ground.
●
Harness or connectors
(The fuel pump circuit is open or shorted.)
●
Fuel pump
P0629
Fuel pump control circuit
high output
ECM detects a control circuit for the fuel pump
is short to power.
SEF817Y
DTC P0628, P0629 FUEL PUMP
EC-1427
[YD (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Wiring Diagram
EBS014XW
YEC509A
EC-1428
[YD (WITHOUT EURO-OBD)]
DTC P0628, P0629 FUEL PUMP
Diagnostic Procedure
EBS014XX
1.
CHECK ECM OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect fuel pump harness connector.
3.
Disconnect ECM harness connector.
4.
Check harness continuity between ECM terminal 10 and fuel
pump terminal 1.
Refer to Wiring Diagram.
5.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 2.
NG
>> Repair open circuit or short to ground or short to power
in harness or connectors.
2.
CHECK FUEL PUMP GROUND CIRCUIT FOR OPEN AND SHORT
1.
Check harness continuity between ECM terminal 29 and fuel pump terminal 2.
Refer to Wiring Diagram.
2.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 3.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.
CHECK FUEL PUMP
Refer to
EC-1429, "Component Inspection"
.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
4.
REPLACE FUEL PUMP
1.
Replace fuel pump.
2.
Perform Fuel Pump Learning Value Clearing. Refer to
EC-1270, "Fuel Pump Learning Value Clearing"
.
>> INSPECTION END
5.
CHECK INTERMITTENT INCIDENT
Refer to
EC-1309, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Continuity should exist.
PBIB1943E
Continuity should exist.
DTC P0628, P0629 FUEL PUMP
EC-1429
[YD (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Component Inspection
EBS014XY
FUEL PUMP
1.
Check continuity between fuel supply pump terminals 1 and 2.
2.
If NG, replace fuel pump.
Removal and Installation
EBS014XZ
FUEL PUMP
Refer to
.
Continuity should exist.
MBIB0623E
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