Nissan Juke F15. Manual - part 604

IGNITION SIGNAL

EC-1229

< DTC/CIRCUIT DIAGNOSIS >

[MR EXCEPT FOR NISMO RS MODELS]

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IGNITION SIGNAL

Component Function Check

INFOID:0000000012198757

1.

INSPECTION START

Turn ignition switch OFF, and restart engine.
Does the engine start?

YES

>> GO TO 2.

NO

>> Proceed to 

EC-1229, "Diagnosis Procedure"

.

2.

IGNITION SIGNAL FUNCTION

With CONSULT

1. Perform “POWER BALANCE” in “ACTIVE TEST” mode of “ENGINE” using CONSULT.

2. Check that each circuit produces a momentary engine speed drop.

Without CONSULT

1. Let engine idle.

2. Check the voltage signal between ECM harness connector and ground with an oscilloscope.

NOTE:

The pulse cycle changes depending on rpm at idle.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to 

EC-1229, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000012198758

1.

CHECK CONDENSER POWER SUPPLY

1. Turn ignition switch OFF.

2. Disconnect condenser harness connector.

3. Turn ignition switch ON.

4. Check the voltage between condenser harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK CONDENSER POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect IPDM E/R harness connector.

3. Check the continuity between IPDM E/R harness connector and condenser harness connector.

ECM

Voltage signal

+

−

Connector

Terminal

Connector

Terminal

F24

96

E19

152

95

104

101

JPBIA4733ZZ

+

−

Voltage

Condenser

Connector

Terminal

F13

1

Ground

Battery voltage

EC-1230

< DTC/CIRCUIT DIAGNOSIS >

[MR EXCEPT FOR NISMO RS MODELS]

IGNITION SIGNAL

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 CONDENSER GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Check the continuity between Condenser harness connector and ground.

3. Also check harness for short to power.
Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK CONDENSER

Check the condenser. refer to 

EC-1232, "Component Inspection (Condenser)"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace condenser.

5.

CHECK IGNITION COIL POWER SUPPLY

1. Reconnect all harness connectors disconnected.

2. Disconnect ignition coil harness connector.

3. Turn ignition switch ON.

4. Check the voltage between ignition coil harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Perform the trouble diagnosis for power supply circuit.

6.

CHECK IGNITION COIL GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Check the continuity between ignition coil harness connector and ground.

+

−

Continuity

IPDM E/R

Condenser

Connector

Terminal

Connector

Terminal

E15

61

F13

1

Existed

+

−

Continuity

Condenser

Connector

Terminal

F13

2

Ground

Existed

+

−

Voltage

Ignition coil

Cylinder

Connector

Terminal

1

F33

3

Ground

Battery voltage

2

F34

3

3

F35

3

4

F36

3

IGNITION SIGNAL

EC-1231

< DTC/CIRCUIT DIAGNOSIS >

[MR EXCEPT FOR NISMO RS MODELS]

C

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F

G

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EC

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3. Also check harness for short to power.
Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace error-detected parts.

7.

CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT

1. Disconnect ECM harness connector.

2. Check the continuity between ECM harness connector and ignition coil harness connector.

3. Also check harness for short to ground and short to power.
Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace error-detected parts.

8.

CHECK IGNITION COIL WITH POWER TRANSISTOR

Check the ignition coil with power transistor. Refer to 

EC-1231, "Component Inspection (Ignition Coil with

Power Transistor)"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-45, "Intermittent Incident"

.

NO

>> Replace malfunctioning ignition coil with power transistor. Refer to 

EM-214, "Exploded View"

.

Component Inspection (Ignition Coil with Power Transistor)

INFOID:0000000012198759

1.

CHECK IGNITION COIL WITH POWER TRANSISTOR-I

1. Turn ignition switch OFF.

2. Disconnect ignition coil harness connector.

3. Check resistance between ignition coil terminals as per the following.

Is the inspection result normal?

YES

>> GO TO 2.

+

−

Continuity

Ignition coil

Cylinder

Connector

Terminal

1

F33

2

Ground

Existed

2

F34

2

3

F35

2

4

F36

2

+

−

Continuity

Ignition coil

ECM

Cylinder

Connector

Terminal

Connector

Terminal

1

F33

1

F24

96

Existed

2

F34

1

95

3

F35

1

104

4

F36

1

101

Ignition coil with power transistor

Resistance [

Ω at 25°C (77°F)]

+

−

Terminal

1

2

Except 0 or 

∞

3

Except 0

2

3

EC-1232

< DTC/CIRCUIT DIAGNOSIS >

[MR EXCEPT FOR NISMO RS MODELS]

IGNITION SIGNAL

NO

>> Replace malfunctioning ignition coil with power transistor. Refer to 

EM-214, "Exploded View"

.

2.

CHECK IGNITION COIL WITH POWER TRANSISTOR-II

CAUTION:

Do the following procedure in the place where ventilation is good without the combustible.

1. Turn ignition switch OFF.

2. Reconnect all harness connectors disconnected.

3. Remove fuel pump fuse in IPDM E/R to release fuel pressure.

NOTE:

Do not use CONSULT to release fuel pressure, or fuel pressure applies again during the following proce-

dure.

4. Start engine.

5. After engine stalls, crank it two or three times to release all fuel pressure.

6. Turn ignition switch OFF.

7. Remove all ignition coil harness connectors to avoid the electrical discharge from the ignition coils. Refer

to 

EM-214, "Exploded View"

.

8. Remove ignition coil and spark plug of the cylinder to be checked. Refer to 

EM-214, "Exploded View"

.

9. Crank engine for 5 seconds or more to remove combustion gas in the cylinder.

10. Connect spark plug and harness connector to ignition coil.

11. Fix ignition coil using a rope etc. with gap of 13 - 17 mm (0.52 -

0.66 in) between the edge of the spark plug and grounded metal

portion as shown in the figure.

12. Crank engine for about three seconds, and check whether spark

is generated between the spark plug and the grounded metal

portion.

CAUTION:

• During the operation, always stay 0.5 cm (19.7 in) away

from the spark plug and the ignition coil. Be careful not to

get an electrical shock while checking, because the elec-

trical discharge voltage becomes 20 kV or more.

• It might cause to damage the ignition coil if the gap of more than 17 mm (0.66 in) is taken.

NOTE:

When the gap is less than 13 mm (0.52 in), the spark might be generated even if the coil is mal-

functioning.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace malfunctioning ignition coil with power transistor. Refer to 

EM-214, "Exploded View"

.

Component Inspection (Condenser)

INFOID:0000000012198760

1.

CHECK CONDENSER

1. Turn ignition switch OFF.

2. Disconnect condenser harness connector.

3. Check resistance between condenser terminals as per the following.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace Condenser.

Spark should be generated.

JMBIA0066GB

Condenser

Resistance

+

−

Terminal

1

2

Above 1 M

Ω [at 25°C (77°F)]