Nissan Juke F15. Manual — part 432
FUEL INJECTOR
EC-541
< DTC/CIRCUIT DIAGNOSIS >
[MR FOR NISMO RS MODELS]
C
D
E
F
G
H
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J
K
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M
A
EC
N
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FUEL INJECTOR
Component Function Check
INFOID:0000000012198087
1.
INSPECTION START
Turn ignition switch to START.
Is any cylinder ignited?
YES
>> GO TO 2.
NO
>> Proceed to
.
2.
CHECK FUEL INJECTOR FUNCTION
With CONSULT
1. Start engine.
2. Perform “POWER BALANCE” in “ACTIVE TEST” mode of “ENGINE” using CONSULT.
3. Check that each circuit produces a momentary engine speed drop.
Without CONSULT
1. Let engine idle.
2. Listen to each fuel injector operating sound.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
.
Diagnosis Procedure
INFOID:0000000012198088
1.
CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect fuel injector harness connector.
3. Turn ignition switch ON.
4. Check the voltage between fuel injector harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> GO TO 2.
2.
CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between fuel injector harness connector and ECM harness connector.
Clicking noise should be heard.
PBIB3332E
+
−
Voltage
Fuel injector
Cylinder
Connector
Terminal
1
F65
1
Ground
Battery voltage
2
F66
1
3
F67
1
4
F68
1
EC-542
< DTC/CIRCUIT DIAGNOSIS >
[MR FOR NISMO RS MODELS]
FUEL INJECTOR
4. Also check harness for short to ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts.
3.
CHECK FUEL INJECTOR DRIVER POWER SUPPLY
1. Reconnect ECM harness connector.
2. Turn ignition switch ON.
3. Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-45, "Intermittent Incident"
NO
>> GO TO 4.
4.
CHECK FUEL INJECTOR DRIVER POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect fuel injector relay harness connector.
4. Check the continuity between ECM harness connector and fuel injector relay harness connector.
5. Also check harness for short to ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace error-detected parts
5.
CHECK FUEL INJECTOR RELAY POWER SUPPLY (CONTACT SIDE)
Check the voltage between fuel injector relay harness connector and ground.
+
−
Continuity
Fuel injector
ECM
Cylinder
Connector
Terminal
Connector
Terminal
1
F65
1
F25
3
Existed
2
F66
1
4
3
F67
1
4
F68
1
3
+
−
Voltage
ECM
Connector
Terminal
F26
49
Ground
Battery voltage
53
+
−
Continuity
ECM
Fuel injector relay
Connector
Terminal
Connector
Terminal
F26
49
E57
5
Existed
53
7
+
−
Voltage
Fuel injector relay
Connector
Terminal
E57
3
Ground
Battery voltage
6
FUEL INJECTOR
EC-543
< 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 6.
NO
>> Perform the trouble diagnosis for power supply circuit.
6.
CHECK FUEL INJECTOR RELAY POWER SUPPLY (EXCITATION COIL SIDE)
1. Reconnect all harness connectors disconnected.
2. Turn ignition switch ON.
3. Check the voltage between fuel injector relay harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> GO TO 7
7.
CHECK FUEL INJECTOR RELAY POWER SUPPLY CIRCUIT (EXCITATION COIL SIDE)
1. Turn ignition switch OFF.
2. Disconnect fuel injector relay harness connector.
3. Disconnect IPDM E/R harness connector.
4. Check the continuity between IPDM E/R harness connector and fuel injector harness connector.
5. 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.
8.
CHECK FUEL INJECTOR RELAY GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect fuel injector relay harness connector.
3. Check the continuity between fuel injector relay harness connector and ground.
4. Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Repair or replace error-detected parts.
9.
CHECK FUEL INJECTOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between fuel injector harness connector and ECM harness connector.
+
−
Voltage
Fuel injector relay
Connector
Terminal
E57
1
Ground
Battery voltage
+
−
Continuity
IPDM E/R
Fuel injector relay
Connector
Terminal
Connector
Terminal
E14
35
E57
1
Existed
+
−
Continuity
Fuel injector relay
Connector
Terminal
E57
2
Ground
Existed
EC-544
< DTC/CIRCUIT DIAGNOSIS >
[MR FOR NISMO RS MODELS]
FUEL INJECTOR
4. Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 11.
NO
>> Repair or replace error-detected parts.
10.
CHECK FUEL INJECTOR RELAY
Check the fuel injector relay. Refer to
EC-544, "Component Inspection (Fuel Injector Relay)"
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-45, "Intermittent Incident"
NO
>> Replace fuel injector relay. Refer to
.
11.
CHECK FUEL INJECTOR
Check the fuel injector. Refer to
EC-544, "Component Inspection (Fuel Injector)"
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-45, "Intermittent Incident"
NO
>> Replace malfunctioning fuel injector. Refer to
Component Inspection (Fuel Injector)
INFOID:0000000012198089
1.
CHECK FUEL INJECTOR
1. Turn ignition switch OFF.
2. Disconnect fuel injector harness connector.
3. Check resistance between fuel injector terminals as per the following.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace malfunctioning fuel injector.
Component Inspection (Fuel Injector Relay)
INFOID:0000000012198090
1.
CHECK FUEL INJECTOR RELAY
1. Turn ignition switch OFF.
2. Remove fuel injector relay.
+
−
Continuity
Fuel injector
ECM
Cylinder
Connector
Terminal
Connector
Terminal
1
F65
2
F25
5
Existed
2
F66
2
6
3
F67
2
7
4
F68
2
8
Fuel injector
Resistance
+
−
Terminals
1
2
1.44 - 1.73
Ω [at 10 - 60°C (50 - 140°F)]
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