Nissan Primera P11. Manual — part 192
YEC794
Preceding
page
IGNITION
COIL No. 4
(WITH POWER
TRANSISTOR)
IGNITION
COIL No. 2
(WITH POWER
TRANSISTOR)
SPARK
PLUG
IGNITION
COIL No. 1
(WITH POWER
TRANSISTOR)
IGNITION
COIL No. 3
(WITH POWER
TRANSISTOR)
SPARK
PLUG
SPARK
PLUG
SPARK
PLUG
Preceding
page
: Detectable line for DTC
: Non-detectable line for DTC
IGNITION SIGNAL
QG16
I
18DE
Wiring Diagram (Cont’d)
EC-325
Diagnostic Procedure
NCEC0546
1
INSPECTION START
Turn ignition switch “OFF”, and restart engine.
Is engine running?
Yes or No
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.
SEF190Y
OK or NG
OK
©
INSPECTION END
NG
©
GO TO 13.
3
CHECK OVERALL FUNCTION
Without CONSULT-II
1. Let engine idle.
2. Read the voltage signal between ECM terminals 35, 36, 37, 38 and ground with an oscilloscope.
3. Verify that the oscilloscope screen shows the signal wave as shown below.
NEF236A
OK or NG
OK
©
INSPECTION END
NG
©
GO TO 13.
IGNITION SIGNAL
QG16
I
18DE
Diagnostic Procedure
EC-326
4
CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ON.
2. Check voltage between ECM terminals 110, 112 and ground with CONSULT-II or tester.
SEF366X
OK or NG
OK
©
GO TO 5.
NG
©
Go to TROUBLE DIAGNOSIS FOR POWER SUPPLY, EC-QG-103.
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.
SEF367X
OK or NG
OK
©
GO TO 11.
NG
©
GO TO 6.
IGNITION SIGNAL
QG16
I
18DE
Diagnostic Procedure (Cont’d)
EC-327
6
CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III
1. Turn ignition switch OFF.
2. Disconnect ECM relay.
SEF984W
3. Check harness continuity between ECM relay terminal 7 and condenser terminal 1. Refer to wiring diagram.
Continuity should exist.
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.
I
Harness connectors F73, E90
I
Harness for open or short between ECM relay and condenser
©
Repair open circuit or short to ground or short to power in harness or connectors.
8
CHECK IGNITION COIL POWER SUPPLY CIRCUIT-IV
1. Check voltage between ECM relay terminal 6 and ground with CONSULT-II or tester.
SEF368X
OK or NG
OK
©
GO TO 10.
NG
©
GO TO 9.
9
DETECT MALFUNCTIONING PART
Check the following.
I
15A fuses
I
Harness for open and short between ECM relay and fuse
©
Repair or replace harness or connectors.
IGNITION SIGNAL
QG16
I
18DE
Diagnostic Procedure (Cont’d)
EC-328
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