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IGNITION SIGNAL
EC-367
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Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
111 W / GECM relay
(Self shut-off)[Engine is running]
[Ignition switch “OFF”]
●For a few seconds after turning ignition
switch “OFF”.0 - 1.0V
[Ignition switch “OFF”]
●More than a few seconds passed after turn-
ing ignition switch “OFF”.BATTERY VOLTAGE
(11 - 14V)
11 9
120W
WPower supply for ECM[Ignition switch “ON”]BATTERY VOLTAGE
(11 - 14V)
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EC-368
[QG (WITH EURO-OBD)]
IGNITION SIGNAL
YEC307A
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![NISSAN ALMERA N16 2003 Electronic Repair Manual IGNITION SIGNAL
EC-369
[QG (WITH EURO-OBD)]
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Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminal NISSAN ALMERA N16 2003 Electronic Repair Manual IGNITION SIGNAL
EC-369
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Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminal](/manual-img/5/57350/w960_57350-698.png)
IGNITION SIGNAL
EC-369
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Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnostic ProcedureEBS00KCU
1.CHECK ENGINE START
Turn ignition switch “OFF”, and restart engine.
Is engine running?
Ye s o r N o
Yes (With CONSULT-II)>>GO TO 2.
Yes (Without CONSULT-II)>>GO TO 3.
No >> GO TO 4.
2.CHECK OVERALL FUNCTION
With CONSULT-II
1. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-II.
2. Make sure that each circuit produces a momentary engine
speed drop.
OK or NG
OK >>INSPECTION END
NG >> GO TO 11.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
60
61
79
80L/R
BR
GY/R
PUIgnition signal No. 3
Ignition signal No. 1
Ignition signal No. 4
Ignition signal No. 2[Engine is running]
●Warm-up condition
●Idle speed0 - 0.1V
[Engine is running]
●Warm-up condition
●Engine speed is 2,000 rpm.0 - 0.2V
PBIB0521E
PBIB0522E
PBIB0133E
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EC-370
[QG (WITH EURO-OBD)]
IGNITION SIGNAL
3. CHECK OVERALL FUNCTION
Without CONSULT-II
1. Let engine idle.
2. Read the voltage signal between ECM terminals 60, 61, 79, 80
and ground with an oscilloscope.
3. Verify that the oscilloscope screen shows the signal wave as
shown below.
OK or NG
OK >>INSPECTION END
NG >> GO TO 11.
4. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
1. Turn ignition switch “ON”.
2. Check voltage between ECM terminals 119, 120 and ground
with CONSULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> Go to EC-110, "
POWER SUPPLY CIRCUIT FOR ECM"
.
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 11.
NG >> GO TO 6.
MBIB0033EPBIB0521E
Voltage: Battery voltage
MBIB0034E
Voltage: Battery voltage
PBIB0624E
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EC-371
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6.CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III
1. Turn ignition switch “OFF”.
2. Disconnect ECM relay.
3. Check harness cont NISSAN ALMERA N16 2003 Electronic Repair Manual IGNITION SIGNAL
EC-371
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6.CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III
1. Turn ignition switch “OFF”.
2. Disconnect ECM relay.
3. Check harness cont](/manual-img/5/57350/w960_57350-700.png)
IGNITION SIGNAL
EC-371
[QG (WITH EURO-OBD)]
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6.CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III
1. Turn ignition switch “OFF”.
2. Disconnect ECM relay.
3. Check harness continuity between ECM relay terminal 7 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 8.
NG >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors E225, F43
●Harness for open or short between ECM relay and condenser
>> Repair open circuit or short to ground or short to power in harness connectors.
8.CHECK IGNITION COIL POWER SUPPLY CIRCUIT-IV
Check voltage between ECM relay terminal 6 and ground with CON-
SULT-II or tester.
OK or NG
OK >> GO TO 10.
NG >> GO TO 9.
9.DETECT MALFUNCTIONING PART
Check the following.
●15A fuse
●Harness for open or short between ECM relay and battery
>> Repair or replace harness or connectors.
10.CHECK ECM RELAY
Refer to EC-373, "
Component Inspection" .
OK or NG
OK >> GO TO 18.
NG >> Replace ECM relay.Continuity should exist.
MBIB0247E
Voltage: Battery voltage
PBIB0625E
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![NISSAN ALMERA N16 2003 Electronic Repair Manual EC-372
[QG (WITH EURO-OBD)]
IGNITION SIGNAL
11 . CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect condenser harness connector.
3. Check harness conti NISSAN ALMERA N16 2003 Electronic Repair Manual EC-372
[QG (WITH EURO-OBD)]
IGNITION SIGNAL
11 . CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect condenser harness connector.
3. Check harness conti](/manual-img/5/57350/w960_57350-701.png)
EC-372
[QG (WITH EURO-OBD)]
IGNITION SIGNAL
11 . CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect condenser harness connector.
3. Check harness continuity between condenser terminal 2 and ground.
Refer to Wiring diagram.
4. Also check harness for short to power.
OK or NG
OK >> GO TO 12.
NG >> Repair open circuit or short to power in harness or connector.
12. CHECK CONDENSER
Refer to EC-373, "
Component Inspection" .
OK or NG
OK >> GO TO 13.
NG >> Replace condenser.
13. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-V
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 1 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 15.
NG >> GO TO 14.
14. DETECT MALFUNCTIONING PART
Check the following.
●Harness for open or short between ignition coil and ECM relay
>> Repair open circuit or short to ground or short to power in harness or connectors. Continuity should exist.
M B I B 0 111 E
Voltage: Battery voltage
SEF107S
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EC-373
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15.CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Check harness continuity between ig NISSAN ALMERA N16 2003 Electronic Repair Manual IGNITION SIGNAL
EC-373
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15.CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Check harness continuity between ig](/manual-img/5/57350/w960_57350-702.png)
IGNITION SIGNAL
EC-373
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15.CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Check harness continuity between ignition coil terminal 2 and engine ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 16.
NG >> Repair open circuit or short to power in harness or connectors.
16.CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 60, 61, 79, 80 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 17.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
17.CHECK IGNITION COIL WITH POWER TRANSISTOR
Refer to EC-373, "
Component Inspection" .
OK or NG
OK >> GO TO 18.
NG >> Replace ignition coil with power transistor.
18.CHECK INTERMITTENT INCIDENT
Refer to EC-109, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS00KCV
ECM RELAY
1. Apply 12V direct current between ECM relay terminals 1 and 2.
2. Check continuity between relay terminals 3 and 5, 6 and 7.
3. If NG, replace ECM relay.
CONDENSER
1. Turn ignition switch “OFF”.
2. Disconnect condenser harness connector.Continuity should exist.
Continuity should exist.
Condition Continuity
12V direct current supply
between terminals 1 and 2Ye s
OFF No
PBIB0077E
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EC-374
[QG (WITH EURO-OBD)]
IGNITION SIGNAL
3. Check resistance between condenser terminals 1 and 2.
IGNITION COIL WITH POWER TRANSISTOR
1. Turn ignition switch “OFF”.
2. Disconnect ignition coil harness connector.
3. Check resistance between ignition coil terminals as follows.
Removal and InstallationEBS00KCW
IGNITION COIL WITH POWER TRANSISTOR
Refer to EM-24, "IGNITION COIL" . Resistance: Above 1 MΩ at 25°C (77°F)
MBIB0031E
Terminal No. Resistance Ω [at 25°C (77°F)]
3 and 1 Except 0 or ∞
3 and 2
Except 0
1 and 2
MBIB0032E