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IGNITION SIGNAL
EC-1075
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Wiring DiagramEBS00N1T
TBWA0083E
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EC-1076
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IGNITION SIGNAL
TBWA0084E
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IGNITION SIGNAL
EC-1077
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Diagnostic ProcedureEBS00N1U
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 all circuits do not produce a momentary engine
speed drop.
OK or NG
OK >>INSPECTION END
NG >> GO TO 12.
3.CHECK OVERALL FUNCTION
Without CONSULT-II
1. Let engine idle.
2. Read the voltage signal between ECM terminals 21, 22, 23, 24
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 12.
PBIB0133E
PBIB0579EPBIB0521E
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![NISSAN X-TRAIL 2001 Service Repair Manual EC-1078
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IGNITION SIGNAL
4. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ON.
2. Check voltage between ECM terminals 109, 111 and ground
with CONSULT- NISSAN X-TRAIL 2001 Service Repair Manual EC-1078
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IGNITION SIGNAL
4. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ON.
2. Check voltage between ECM terminals 109, 111 and ground
with CONSULT-](/manual-img/5/57405/w960_57405-1427.png)
EC-1078
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IGNITION SIGNAL
4. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ON.
2. Check voltage between ECM terminals 109, 111 and ground
with CONSULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> Go to EC-848, "
POWER SUPPLY CIRCUIT FOR ECM"
.
5. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-II
Check voltage between ECM terminal 12 and ground with CON-
SULT-II or tester.
OK or NG
OK >> GO TO 10.
NG >> GO TO 6.
6. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect ECM relay.
4. Check harness continuity between ECM terminal 12 and ECM
relay terminal 7. Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
7. 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 9.
NG >> GO TO 8.Voltage: Battery voltage
PBIB0580E
Voltage: Battery voltage
PBIB0136E
Continuity should exist.
PBIB0493E
Voltage: Battery voltage
PBIB0581E
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IGNITION SIGNAL
EC-1079
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8.DETECT MALFUNCTIONING PART
Check the following.
●20A fuse
●Harness or connectors E61, F38
●Harness for open and short between ECM relay and fuse
>> Repair or replace harness or connectors.
9.CHECK ECM RELAY
Refer to EC-853, "
Component Inspection" .
OK or NG
OK >> GO TO 17.
NG >> Replace ECM relay.
10.CHECK CONDENSER CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect condenser harness connector.
3. Check harness continuity between ECM terminal 12 and con-
denser terminal 1, condenser terminal 2 and engine ground.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 11.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
11 . CHECK CONDENSER
Refer to EC-1081, "
Component Inspection" .
OK or NG
OK >> GO TO 12.
NG >> Replace condenser.Continuity should exist.
PBIB0509E
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![NISSAN X-TRAIL 2001 Service Repair Manual EC-1080
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IGNITION SIGNAL
12. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-V
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Disconnect ignition coil NISSAN X-TRAIL 2001 Service Repair Manual EC-1080
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IGNITION SIGNAL
12. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-V
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Disconnect ignition coil](/manual-img/5/57405/w960_57405-1429.png)
EC-1080
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IGNITION SIGNAL
12. 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 14.
NG >> GO TO 13.
13. DETECT MALFUNCTIONING PART
Check the following.
●Harness for open or short between ignition coil and ECM relay
●Harness for open or short between ignition coil and ECM
>> Repair or replace harness or connectors.
14. 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 15.
NG >> Repair open circuit or short to power in harness or connectors.
PBIB0509E
Voltage: Battery voltage
SEF107S
Continuity should exist.
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EC-1081
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15.CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity NISSAN X-TRAIL 2001 Service Repair Manual IGNITION SIGNAL
EC-1081
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15.CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity](/manual-img/5/57405/w960_57405-1430.png)
IGNITION SIGNAL
EC-1081
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15.CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 21, 22, 23, 24 and ignition coil terminal 3.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 16.
NG >> 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-1081, "
Component Inspection" .
OK or NG
OK >> GO TO 17.
NG >> Replace ignition coil with power transistor.
17.CHECK INTERMITTENT INCIDENT
Refer to EC-847, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS00N1V
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.
CONDENSER
1. Turn ignition switch “OFF”.
2. Disconnect condenser harness connector.
3. Check resistance between condenser terminals as 1 and 2.Continuity should exist.
Terminal No. (Polarity) Resistance Ω [at 25°C (77°F)]
3 (+) - 2 (-) Except 0 or ∞
1 (+) - 3 (-)
Except 0
1 (+) - 2 (-)
SEF371Q
Resistance: Above 1 MΩ at 25°C (77°F)
SEF124Y
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EC-1082
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IGNITION SIGNAL
Removal and Installation
EBS00N1W
IGNITION COIL WITH POWER TRANSISTOR
Refer to EM-29, "IGNITION COIL" .