Nissan Primera P11. Manual — part 276
Wiring Diagram
NCEC0434
YEC251
IGNITION SWITCH
ON or START
Refer to
EL-POWER.
Detectable line for DTC
Non-detectable line for DTC
Hyper CVT models
M/T models
FUSE
BLOCK
(J/B)
INJECTOR
No.4
ECM
REFER TO THE FOLLOWING
FUSE BLOCK -
Junction Box (J/B)
INJECTOR
No.1
INJECTOR
No.2
INJECTOR
No.3
INJECTOR
SR20DE
Wiring Diagram
EC-303
Diagnostic Procedure
NCEC0438
1
CHECK OVERALL FUNCTION
With CONSULT-II
1. Start engine.
2. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-II.
NEF105A
3. Make sure that each circuit produces a momentary engine speed drop.
Without CONSULT-II
1. Start engine.
2. Listen to each injector operating sound.
MEC703B
Clicking noise should be heard.
OK or NG
OK
©
INSPECTION END
NG
©
GO TO 2.
2
CHECK POWER SUPPLY
1. Stop engine.
2. Disconnect injector harness connector.
3. Turn ignition switch “ON”.
4. Check voltage between terminal 2 and ground with CONSULT-II or tester.
SEF986W
Voltage: Battery voltage
OK or NG
OK
©
GO TO 4.
NG
©
GO TO 3.
INJECTOR
SR20DE
Diagnostic Procedure
EC-304
Component Inspection
NCEC0439
INJECTOR
NCEC0439S01
1.
Disconnect injector harness connector.
2.
Check resistance between terminals as shown in the figure.
Resistance: 13.5 - 17.5
Ω
[at 25°C (77°F)]
If NG, replace injector.
3
DETECT MALFUNCTIONING PART
Check the following.
I
10A fuse
I
Harness connectors F13, F60
I
Harness connectors M50, F104 (CVT: M81, F115)
I
Harness for open or short between injector and fuse
©
Repair harness or connectors.
4
CHECK OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check harness continuity between injector harness connector terminal 1 and ECM terminals 101, 103, 105, 107.
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 6.
NG
©
GO TO 5.
5
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors F13, F60
I
Harness for open or short between ECM and injector
©
Repair open circuit or short to ground or short to power in harness or connectors.
6
CHECK INJECTOR
Refer to “Component Inspection”, EC-SR-305.
OK or NG
OK
©
GO TO 7.
NG
©
Replace injector.
7
CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-SR-114.
©
INSPECTION END
SEF139X
INJECTOR
SR20DE
Component Inspection
EC-305
Component Description
NCEC0566
IGNITION COIL & POWER TRANSISTOR (BUILT INTO
DISTRIBUTOR)
NCEC0566S01
The ignition coil is built into distributor. The ignition signal from the
ECM is sent to the power transistor. The power transistor switches
on and off the ignition coil primary circuit. As the primary circuit is
turned on and off, the proper high voltage is induced in the coil
secondary circuit.
The distributor is not repairable and must be replaced as an
assembly except distributor cap and rotor head.
CONSULT-II Reference Value in Data Monitor
Mode
NCEC0567
MONITOR ITEM
CONDITION
SPECIFICATION
IGN TIMING
I
Engine: After warming up
I
Air conditioner switch: OFF
I
Shift lever: “N”
I
No-load
Idle
15° BTDC
2,000 rpm
Approx. 40° BTDC
ECM Terminals and Reference Value
NCEC0568
Specification data are reference values and are measured between each terminal and 43 (ECM ground).
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
35
W/L
Ignition signal
[Engine is running]
I
Warm-up condition
I
Idle speed
Approximately 0.3V
SEF996V
[Engine is running]
I
Engine speed is 2,000 rpm
Approximately 0.8V
SEF997V
SEF211X
Distributor
Camshaft position sensor
and power transistor
harness connector
Ignition coil
harness connector
IGNITION SIGNAL
SR20DE
Component Description
EC-306
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