Infiniti G35 (V35). Manual - part 448

IGNITION SIGNAL

EC-673

C

D

E

F

G

H

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J

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A

EC

5. 

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-II

1.

Turn ignition switch OFF.

2.

Disconnect condenser harness connector.

3.

Turn ignition switch ON.

4.

Check voltage between condenser terminal 1 and ground with
CONSULT-II or tester.

OK or NG

OK

>> GO TO 8.

NG

>> GO TO 6.

6. 

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R harness connector E7.

3.

Check harness continuity between IPDM E/R terminal 17 and condenser terminal 1.
Refer to Wiring Diagram.

4.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 17.

NG

>> GO TO 7.

7. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors E12, F3

●

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.

PBIB1286E

Voltage: Battery voltage

PBIB0624E

Continuity should exist.

EC-674

IGNITION SIGNAL

8. 

CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Check harness continuity between condenser terminal 2 and ground.
Refer to Wiring Diagram.

3.

Also check harness for short to power.

OK or NG

OK

>> GO TO 9.

NG

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

9. 

CHECK CONDENSER

Refer to 

EC-676, "Component Inspection"

 .

OK or NG

OK

>> GO TO 10.

NG

>> Replace condenser.

10. 

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-IV

1.

Turn ignition switch OFF.

2.

Reconnect all harness connectors disconnected.

3.

Disconnect ignition coil harness connector.

4.

Turn ignition switch ON.

5.

Check voltage between ignition coil terminal 3 and ground with
CONSULT-II or tester.

OK or NG

OK

>> GO TO 12.

NG

>> GO TO 11.

11. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors F18, F201

●

Harness for open or short between ignition coil and harness connector F3

>> Repair or replace harness or connectors.

Continuity should exist.

Voltage: Battery voltage

PBIB1087E

PBIB0138E

IGNITION SIGNAL

EC-675

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D

E

F

G

H

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J

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M

A

EC

12. 

CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Check harness continuity between ignition coil terminal 2 and ground.
Refer to Wiring Diagram.

3.

Also check harness for short to power.

OK or NG

OK

>> GO TO 14.

NG

>> GO TO 13.

13. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors F18, F201

●

Harness for open or short between ignition coil and ground

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

14. 

CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Disconnect ECM harness connector.

2.

Check harness continuity between ECM terminals 60, 61, 62, 79, 80, 81 and ignition coil terminal 1.
Refer to Wiring Diagram.

3.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 16.

NG

>> GO TO 15.

15. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors F18, F201

●

Harness for open or short between ignition coil and ECM

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

16. 

CHECK IGNITION COIL WITH POWER TRANSISTOR

Refer to 

EC-676, "Component Inspection"

 .

OK or NG

OK

>> GO TO 17.

NG

>> Replace malfunctioning ignition coil with power transistor.

17. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-151, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

OK or NG

OK

>> Replace IPDM E/R.

NG

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

Continuity should exist.

Continuity should exist.

EC-676

IGNITION SIGNAL

Component Inspection

NBS0011L

IGNITION COIL WITH POWER TRANSISTOR

CAUTION:

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

1.

Turn ignition switch OFF.

2.

Disconnect ignition coil harness connector.

3.

Check resistance between ignition coil terminals as follows.

4.

If NG, Replace ignition coil with power transistor.
If OK, go to next step.

5.

Turn ignition switch OFF.

6.

Reconnect all harness connectors disconnected.

7.

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

NOTE:
Do not use CONSULT-II to release fuel pressure, or fuel pres-
sure applies again during the following procedure.

8.

Start engine.

9.

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

10. Turn ignition switch OFF.

11. Remove ignition coil harness connectors to avoid the electrical

discharge from the ignition coils.

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

checked.

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

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

15. Fix ignition coil using a rope etc. with gap of 13 - 17 mm

between the edge of the spark plug and grounded metal portion
as shown in the figure.

16. Crank engine for about 3 seconds, and check whether spark is

generated between the spark plug and the grounded part.

CAUTION:

●

Do not approach to the spark plug and the ignition coil
within 50cm. Be careful not to get an electrical shock
while checking, because the electrical discharge voltage
becomes 20kV or more.

●

It might cause to damage the ignition coil if the gap of more than 17 mm is taken.

NOTE:
When the gap is less than 13 mm, the spark might be generated even if the coil is malfunctioning.

17. If NG, Replace ignition coil with power transistor.

Terminal No. (Polarity)

Resistance 

Ω

 [at 25

°

C (77

°

F)]

1 and 2

Except 0 or 

∞

1 and 3

Except 0

2 and 3

Spark should be generated.

PBIB0847E

PBIB1910E

PBIB2325E