Nissan Primera P11. Manual — part 277
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
36*1
G
Ignition check
[Engine is running]
I
Warm-up condition
I
Idle speed
Approximately 13V
SEF998V
[Engine is running]
I
Engine speed is 2,000 rpm
Approximately 12V
SEF999V
*1: If so equipped
IGNITION SIGNAL
SR20DE
ECM Terminals and Reference Value (Cont’d)
EC-307
Wiring Diagram
NCEC0571
YEC852
ECM
RELAY
DISTRIBUTOR
Refer to
EL-POWER.
BATTERY
RESISTOR
SPARK
PLUG
IGNITION
COIL
CONDENSER
POWER
TRANSISTOR
IGNITION SIGNAL
SR20DE
Wiring Diagram
EC-308
Diagnostic Procedure
NCEC0572
1
CHECK ENGINE START
Turn ignition switch “OFF”, and restart engine.
Is engine running?
Yes or No
Yes
©
GO TO 7.
No
©
GO TO 2.
2
CHECK POWER SUPPLY
1. Turn ignition switch “OFF”.
2. Disconnect ignition coil harness connector.
SEF211X
3. Turn ignition switch “ON”.
4. Check voltage between terminal 8 and ground with CONSULT-II or tester.
SEF257W
Voltage: Battery voltage
OK or NG
OK
©
GO TO 4.
NG
©
GO TO 3.
3
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors E90, F73
I
Harness for open or short between ignition coil and ignition switch
©
Repair harness or connectors.
4
CHECK GROUND CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect power transistor harness connector.
3. Check harness continuity between terminal 5 and engine ground.
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 5.
NG
©
Repair open circuit or short to ground or short to power in harness or connectors.
Ignition coil
harness connector
Distributor
Camshaft position sensor
and power transistor
harness connector
IGNITION SIGNAL
SR20DE
Diagnostic Procedure
EC-309
Component Inspection
NCEC0573
IGNITION COIL
NCEC0573S01
1.
Disconnect distributor harness connector.
2.
Check continuity between terminal 7 and 8 on distributor.
Continuity should exist.
If NG, replace distributor.
3.
For checking secondary coil, remove distributor cap.
4.
Check resistance between ignition coil harness connector ter-
minal 7 and coil tower metal tip 9 (secondary terminal) on the
distributor head.
Terminal
Resistance [at 25°C (77°F)]
7 - 8 (Primary coil)
Approximately 0.5 - 1.0
Ω
8 - secondary terminal on distributor
head (Secondary coil)
Approximately 25 k
Ω
If NG, replace distributor.
5
CHECK INPUT SIGNAL CIRCUIT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 35 and power transistor terminal 6.
Refer to wiring diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK
©
GO TO 6.
NG
©
Repair open circuit or short to ground or short to power in harness or connectors.
6
CHECK IGNITION COIL, POWER TRANSISTOR
Refer to “Component Inspection”, EC-SR-310.
OK or NG
OK
©
GO TO 7.
NG
©
Replace malfunctioning component(s).
7
CHECK INPUT SIGNAL CIRCUIT (If so equipped)
1. Stop engine.
2. Disconnect ignition coil harness connector.
3. Disconnect ECM harness connector.
4. Check harness continuity between ignition coil terminal 7 and ECM terminal 36.
Refer to wiring diagram.
Continuity should exist.
5. Also check harness for short to ground and short to power.
OK or NG
OK
©
GO TO 8.
NG
©
Repair open circuit or short to ground or short to power in harness or connectors.
8
CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-SR-114.
©
INSPECTION END
SEF237X
Coil tower metal tip
SEF238X
Coil tower metal tip
IGNITION SIGNAL
SR20DE
Component Inspection
EC-310
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