Nissan Note E12. Instruction — part 245
IGNITION SIGNAL
EC-319
< DTC/CIRCUIT DIAGNOSIS >
[HR16DE]
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EC
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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
.
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
.
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
.
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
.
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
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 >
[HR16DE]
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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
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
11.
CHECK INTERMITTENT INCIDENT
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
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
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
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