Nissan Note E12. Manual - part 245

IGNITION SIGNAL

EC-319

< DTC/CIRCUIT DIAGNOSIS >

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IGNITION SIGNAL

Component Function Check

INFOID:0000000009022678

1.

INSPECTION START

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

YES-1 >> With CONSULT: GO TO 2.

YES-2 >> Without CONSULT: GO TO 3.

NO

>> Proceed to 

EC-319, "Diagnosis Procedure"

.

2.

IGNITION SIGNAL FUNCTION

With CONSULT

1. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT.

2. Make sure that each circuit produces a momentary engine speed drop.
Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to 

EC-319, "Diagnosis Procedure"

.

3.

IGNITION SIGNAL FUNCTION

 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-319, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009022679

1.

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I

1. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.

2. Check the voltage between ECM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Proceed to 

EC-137, "Diagnosis Procedure"

.

ECM

Voltage signal

+

−

Connector

Terminal

Connector

Terminal

F10

17

E16

108

18

21

22

JMBIA0219GB

ECM

Voltage

Connector

Terminal

+

−

E16

105

108

Battery voltage

EC-320

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

IGNITION SIGNAL

2.

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-II

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 5.

NO

>> GO TO 3.

3.

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III

1. Turn ignition switch OFF.

2. Disconnect IPDM E/R harness connector F42.

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

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

YES

>> GO TO 11.

NO

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check the following.

• Harness for open or short between IPDM E/R and condenser

>> Repair open circuit or short to ground or short to power in harness or connectors.

5.

CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT

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 6.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

6.

CHECK CONDENSER

Refer to 

EC-323, "Component Inspection (Condenser)"

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace condenser.

7.

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-IV

1. Reconnect all harness connectors disconnected.

2. Disconnect ignition coil harness connector.

Condenser

Ground

Voltage

Connector

Terminal

F26

1

Ground

Battery voltage

IPDM E/R

Condenser

Continuity

Connector

Terminal

Connector

Terminal

F42

34

F26

1

Existed

Condenser

Ground

Continuity

Connector

Terminal

F26

2

Ground

Existed

IGNITION SIGNAL

EC-321

< DTC/CIRCUIT DIAGNOSIS >

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3. Turn ignition switch ON.

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

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

8.

CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

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

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

YES

>> GO TO 9.

NO

>> Repair open circuit or short to power in harness or connectors.

9.

CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

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 10.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

10.

CHECK IGNITION COIL WITH POWER TRANSISTOR

Refer to 

EC-322, "Component Inspection (Ignition Coil with Power Transistor)"

.

Is the inspection result normal?

YES

>> GO TO 11.

NO

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

EM-48, "Exploded View"

.

11.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-41, "Intermittent Incident"

.

Ignition coil

Ground

Voltage

Cylinder

Connector

Terminal

1

F34

3

Ground

Battery voltage

2

F35

3

3

F36

3

4

F37

3

Ignition coil

Ground

Continuity

Cylinder

Connector

Terminal

1

F34

2

Ground

Existed

2

F35

2

3

F36

2

4

F37

2

Ignition coil

ECM

Continuity

Cylinder

Connector

Terminal

Connector

Terminal

1

F34

1

F10

17

Existed

2

F35

1

18

3

F36

1

22

4

F37

1

21

EC-322

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

IGNITION SIGNAL

>> INSPECTION END

Component Inspection (Ignition Coil with Power Transistor)

INFOID:0000000009022680

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 follows.

Is the inspection result normal?

YES

>> GO TO 2.

NO

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

EM-48, "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.

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

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:

• Do not approach to the spark plug and the ignition coil

within 50 cm (19.7 in). Be careful not to get an electrical

shock while checking, because the electrical 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-48, "Exploded View"

.

Terminals

Resistance

1 and 2

Except 0 or 

∞ Ω [at 25°C (77°F)]

1 and 3

Except 0 

Ω [at 25°C (77°F)]

2 and 3

Spark should be generated.

JMBIA0066GB