Nissan Juke F15. Manual — part 433
FUEL INJECTOR
EC-545
< DTC/CIRCUIT DIAGNOSIS >
[MR FOR NISMO RS MODELS]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
3. Check the continuity between fuel heater relay terminals as per
the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace fuel injector relay.
Fuel injector relay
Conditions
Continuity
+
−
Terminal
3
5
12 V direct current supply between ter-
minals 1 and 2
Existed
No current supply
Not existed
6
7
12 V direct current supply between ter-
minals 1 and 2
Existed
No current supply
Not existed
PBIB0077E
EC-546
< DTC/CIRCUIT DIAGNOSIS >
[MR FOR NISMO RS MODELS]
LOW PRESSURE FUEL PUMP
LOW PRESSURE FUEL PUMP
Component Function Check
INFOID:0000000012198091
1.
CHECK FUEL PUMP FUNCTION
1. Turn ignition switch ON.
2. Pinch fuel feed hose with two fingers.
NOTE:
Fuel pressure pulsation should be felt on the fuel feed hose for 1 second after ignition switch is turned ON.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
.
Diagnosis Procedure
INFOID:0000000012198092
1.
CHECK FUEL PUMP RELAY POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Turn ignition switch ON.
4. Check the voltage between ECM harness connector terminals.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK FUEL PUMP RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector.
3. Check the continuity between ECM harness connector and IPDM E/R harness connector.
4. Also check harness for short to ground.
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for power supply circuit.
NO
>> Repair or replace error-detected parts.
3.
CHECK LOW FUEL PUMP POWER SUPPLY
1. Turn ignition switch OFF.
2. Reconnect ECM harness connector.
3. Disconnect fuel level sensor unit and fuel pump harness connector.
4. Turn ignition switch ON.
5. Check the voltage between fuel level sensor unit and fuel pump harness connector and ground.
ECM
Voltage
Connector
+
−
Terminal
E18
117
127
Battery voltage
+
−
Continuity
ECM
IPDM E/R
Connector
Terminal
Connector
Terminal
E18
117
E13
31
Existed
LOW PRESSURE FUEL PUMP
EC-547
< DTC/CIRCUIT DIAGNOSIS >
[MR FOR NISMO RS MODELS]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK LOW FUEL PUMP POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector.
3. Check the continuity between fuel level sensor unit and fuel pump harness connector and IPDM E/R har-
ness connector.
4. Also check harness for short to ground.
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for power supply circuit.
NO
>> Repair or replace error-detected parts.
5.
CHECK LOW FUEL PUMP GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check the continuity between fuel level sensor unit and fuel pump harness connector and ground.
3. Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace error-detected parts.
6.
CHECK LOW FUEL PUMP
Check the low fuel pump. Refer to
EC-547, "Component Inspection"
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-45, "Intermittent Incident"
.
NO
>> Replace fuel level sensor unit and fuel pump. Refer to
Component Inspection
INFOID:0000000012198093
1.
CHECK FUEL PRESSURE REGULATOR
1. Turn ignition switch OFF.
2. Check low fuel pressure. Refer to
Is inspection result normal?
+
−
Voltage
Fuel level sensor unit
and fuel pump
Connector
Terminal
B46
1
Ground
Battery voltage should for exist 1
second after ignition switch is turn
ON.
+
−
Continuity
Fuel level sensor unit and
fuel pump
IPDM E/R
Connector
Terminal
Connector
Terminal
B46
1
E15
54
Existed
+
−
Continuity
Fuel level sensor unit and
fuel pump
Connector
Terminal
B46
3
Ground
Existed
EC-548
< DTC/CIRCUIT DIAGNOSIS >
[MR FOR NISMO RS MODELS]
LOW PRESSURE FUEL PUMP
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK LOW PRESSURE FUEL PUMP
1. Turn ignition switch OFF.
2. Disconnect fuel level sensor unit.
3. Check resistance between fuel level sensor unit terminals as follows.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace fuel level sensor unit. Refer to
Fuel level sensor unit
Condition
Resistance
+
−
Terminals
2
4
Temperature: 25
°C (77°F)
0.2 - 5.0
Ω
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