Nissan March K13. Instruction — part 256
FUEL PUMP
EC-485
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 2)]
C
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F
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EC
N
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FUEL PUMP
Component Function Check
INFOID:0000000006046395
1.
CHECK FUEL PUMP FUNCTION
1.
Turn ignition switch ON.
2.
Pinch fuel feed hose (1) with two fingers.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>>
XX-XX, "*****"
.
Diagnosis Procedure
INFOID:0000000006037615
1.
CHECK FUEL PUMP POWER SUPPLY CIRCUIT-I
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 2.
2.
CHECK FUEL PUMP POWER SUPPLY CIRCUIT-II
1.
Turn ignition switch OFF.
2.
Disconnect IPDM E/R harness connector.
3.
Check the continuity between IPDM E/R harness connector and ECM harness connector.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> GO TO 3.
3.
DETECT MALFUNCTIONING PART
Check the following.
• Harness or connectors E6, F1
• IPDM E/R connector E12
• Harness for open or short to ground and short power
>> Repair open circuit or short to ground or short to power in harness or connectors.
Fuel pressure pulsation should be felt on the fuel feed
hose for 1 second after ignition switch is turned ON.
JSBIA0377ZZ
ECM
Voltage
Connector
Terminal
+
−
F7
23
108
Battery voltage
ECM
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
F7
23
E12
31
Existed
EC-486
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 2)]
FUEL PUMP
4.
CHECK FUEL PUMP POWER SUPPLY CIRCUIT-III
1.
Turn ignition switch OFF.
2.
Reconnect all harness connectors disconnected.
3.
Disconnect “fuel level sensor unit and fuel pump” harness connector.
4.
Turn ignition switch ON.
5.
Check voltage between “fuel level sensor unit and fuel pump” harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> GO TO 5.
5.
CHECK 15 A FUSE
1.
Turn ignition switch OFF.
2.
Disconnect 15 A fuse (No. 60) from IPDM E/R.
3.
Check 15 A fuse.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace fuse.
6.
CHECK FUEL PUMP POWER SUPPLY CIRCUIT-IV
1.
Disconnect IPDM E/R harness connector.
2.
Check the continuity between IPDM E/R harness connector and “fuel level sensor unit and fuel pump”
harness connector.
3.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> GO TO 7.
7.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E105, M77
• Harness connectors B4, M15
• Harness for open or short between IPDM E/R and “fuel level sensor unit and fuel pump”
>> Repair open circuit or short to ground or short to power in harness or connectors.
8.
CHECK FUEL PUMP GROUND CIRCUIT
1.
Check the continuity between “fuel level sensor unit and fuel pump” and ground.
2.
Also check harness for short to power.
Fuel level sensor unit
and fuel pump
Ground
Voltage
Connector
Terminal
B40
4
Ground
Battery voltage should for exist 1 second af-
ter ignition switch is turn ON.
IPDM E/R
Fuel level sensor unit and
fuel pump
Continuity
Connector
Terminal
Connector
Terminal
E14
55
B40
4
Existed
Fuel level sensor unit
and fuel pump
Ground
Continuity
Connector
Terminal
B40
2
Ground
Existed
FUEL PUMP
EC-487
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 2)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Repair open circuit or short to power in harness or connectors.
9.
CHECK FUEL PUMP
Refer to
XX-XX, "*****"
.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Replace “fuel level sensor unit and fuel pump”.
10.
CHECK INTERMITTENT INCIDENT
Refer to
XX-XX, "*****"
.
Is the inspection result normal?
YES
>> Replace IPDM E/R.
NO
>> Repair or replace harness or connectors.
Component Inspection (Fuel pump)
INFOID:0000000006066590
1.
CHECK FUEL PUMP
1.
Turn ignition switch OFF.
2.
Disconnect “fuel level sensor unit and fuel pump (main)” harness connector.
3.
Check resistance between “fuel level sensor unit and fuel pump (main)” terminals as follows.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace “fuel level sensor unit and fuel pump (main)”
Terminals
Resistance
1 and 3
0.2 - 5.0
Ω
[at 25
°
C (77
°
F)]
EC-488
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 2)]
HO2S1
HO2S1
Component Function Check
INFOID:0000000005886633
1.
CHECK HEATED OXYGEN SENSOR 1 FUNCTION
With CONSULT-III
1.
Start engine and warm it up to normal operating temperature.
2.
Select “HO2S1 MNITOR (B1)” in ”DATA MONITOR” mode with CONSULT-III.
3.
Keep the engine speed at 2,000 rpm under no load, and make
sure that the monitors fluctuates between LEAN and RICH more
than five times in 10 seconds.
Without CONSULT-III
1.
Start engine and warm it up to normal operating temperature.
2.
Stop engine and wait at least 10 seconds.
3.
Set ECM in Diagnostic test mode - II (Heated oxygen sensor 1 monitor). Refer to
.
4.
Keep the engine speed at 2,000 rpm under no load, and make
sure that the MIL comes ON more than five times in 10 seconds.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
Diagnosis Procedure
INFOID:0000000005886634
1.
CHECK GROUND CONNECTION
1.
Turn ignition switch OFF.
2.
Check ground connection E38. Refer to Ground Inspection in
XX-XX, "*****"
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace ground connection.
2.
RETIGHTEN HEATED OXYGEN SENSOR 1
Loosen and retighten the heated oxygen sensor 1. Refer to
XX-XX, "*****"
.
>> GO TO 3.
3.
CHECK EXHAUST GAS LEAK
1.
Start engine and run it at idle.
1 times: RICH
→
LEAN
→
RICH
2 times: RICH
→
LEAN
→
RICH
→
LEAN
→
RICH
SEF217YA
SAT652J
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