NISSAN PRIMERA 1999 Electronic Repair Manual

Diagnostic ProcedureNCEC0431
1 CHECK GROUND CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect PNP switch harness connector.
SEF740W3. Check harness continuity between PNP switch harness connector terminal 2 and body 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 3.
NG©GO TO 2.
2 DETECT MALFUNCTIONING PART
Check the harness for open or short between PNP switch and body ground.
©Repair open circuit or short to ground or short to power in harness or connectors.
3 CHECK INPUT SIGNAL CIRCUIT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 42 and PNP switch harness connector terminal 1.
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 5.
NG©GO TO 4.
4 DETECT MALFUNCTIONING PART
Check the harness for open or short between ECM and PNP switch.
©Repair open circuit or short to ground or short to power in harness or connectors.
5 CHECK PNP SWITCH
Refer to MT section or AT section.
OK or NG
OK©GO TO 6.
NG©Replace PNP switch.
6 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-SR-114.
©INSPECTION END
DTC P1706 PARK/NEUTRAL POSITION (PNP) SWITCHSR20DE
Diagnostic Procedure
EC-301

Component DescriptionNCEC0435The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the injector circuit, the coil in the injector is
energized. The energized coil pulls the needle valve back and
allows fuel to flow through the injector into the intake manifold. The
amount of fuel injected depends upon the injection pulse duration.
Pulse duration is the length of time the injector remains open. The
ECM controls the injection pulse duration based on engine fuel
needs.
CONSULT-II Reference Value in Data Monitor
Mode
NCEC0436
MONITOR ITEM CONDITION SPECIFICATION
INJ PULSE -B1IEngine: After warming up
IAir conditioner switch: OFF
IShift lever: ªNº
INo-loadIdle 2.4 - 3.2 msec
2,000 rpm 1.9 - 2.8 msec
B/FUEL SCHDLIEngine: After warming up
IAir conditioner switch: OFF
IShift lever: ªNº
INo-loadIdle 2.4 - 3.2 msec
2,000 rpm 1.4 - 2.8 msec
ECM Terminals and Reference ValueNCEC0437Specification data are reference values and are measured between each terminal and 48 (ECM ground).
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
101
103
105
107R/B
Y/B
G/B
L/BInjector No. 1
Injector No. 2
Injector No. 3
Injector No. 4[Engine is running]
IWarm-up condition
IIdle speedBATTERY VOLTAGE
(11 - 14V)
SEF011W
[Engine is running]
IWarm-up condition
IEngine speed is 2,000 rpmBATTERY VOLTAGE
(11 - 14V)
SEF012W
SEF138X
INJECTORSR20DE
Component Description
EC-302

Wiring DiagramNCEC0434
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.1INJECTOR
No.2INJECTOR
No.3
INJECTORSR20DE
Wiring Diagram
EC-303

Diagnostic ProcedureNCEC0438
1 CHECK OVERALL FUNCTION
With CONSULT-II
1. Start engine.
2. Perform ªPOWER BALANCEº in ªACTIVE TESTº mode with CONSULT-II.
NEF105A3. Make sure that each circuit produces a momentary engine speed drop.
Without CONSULT-II
1. Start engine.
2. Listen to each injector operating sound.
MEC703BClicking 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 ªONº.
4. Check voltage between terminal 2 and ground with CONSULT-II or tester.
SEF986WVoltage: Battery voltage
OK or NG
OK©GO TO 4.
NG©GO TO 3.
INJECTORSR20DE
Diagnostic Procedure
EC-304

Component InspectionNCEC0439INJECTORNCEC0439S011. Disconnect injector harness connector.
2. Check resistance between terminals as shown in the figure.
Resistance: 13.5 - 17.5W[at 25ÉC (77ÉF)]
If NG, replace injector.
3 DETECT MALFUNCTIONING PART
Check the following.
I10A fuse
IHarness connectors F13, F60
IHarness connectors M50, F104 (CVT: M81, F115)
IHarness for open or short between injector and fuse
©Repair harness or connectors.
4 CHECK OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch ªOFFº.
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.
IHarness connectors F13, F60
IHarness 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 ªComponent Inspectionº, EC-SR-305.
OK or NG
OK©GO TO 7.
NG©Replace injector.
7 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-SR-114.
©INSPECTION END
SEF139X
INJECTORSR20DE
Component Inspection
EC-305

Component DescriptionNCEC0566IGNITION COIL & POWER TRANSISTOR (BUILT INTO
DISTRIBUTOR)
NCEC0566S01The 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 TIMINGIEngine: After warming up
IAir conditioner switch: OFF
IShift lever: ªNº
INo-loadIdle 15É BTDC
2,000 rpm Approx. 40É BTDC
ECM Terminals and Reference ValueNCEC0568Specification data are reference values and are measured between each terminal and 43 (ECM ground).
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
35 W/L Ignition signal[Engine is running]
IWarm-up condition
IIdle speedApproximately 0.3V
SEF996V
[Engine is running]
IEngine speed is 2,000 rpmApproximately 0.8V
SEF997V
SEF211XDistributor Camshaft position sensor
and power transistor
harness connectorIgnition coil
harness connector
IGNITION SIGNALSR20DE
Component Description
EC-306

TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
36*1 G Ignition check[Engine is running]
IWarm-up condition
IIdle speedApproximately 13V
SEF998V
[Engine is running]
IEngine speed is 2,000 rpmApproximately 12V
SEF999V
*1: If so equipped
IGNITION SIGNALSR20DE
ECM Terminals and Reference Value (Cont'd)
EC-307

Wiring DiagramNCEC0571
YEC852
ECM
RELAY
DISTRIBUTOR Refer to
EL-POWER. BATTERY
RESISTOR
SPARK
PLUGIGNITION
COILCONDENSER
POWER
TRANSISTOR
IGNITION SIGNALSR20DE
Wiring Diagram
EC-308

Diagnostic ProcedureNCEC0572
1 CHECK ENGINE START
Turn ignition switch ªOFFº, and restart engine.
Is engine running?
YesorNo
Ye s©GO TO 7.
No©GO TO 2.
2 CHECK POWER SUPPLY
1. Turn ignition switch ªOFFº.
2. Disconnect ignition coil harness connector.
SEF211X3. Turn ignition switch ªONº.
4. Check voltage between terminal 8 and ground with CONSULT-II or tester.
SEF257WVoltage: Battery voltage
OK or NG
OK©GO TO 4.
NG©GO TO 3.
3 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors E90, F73
IHarness for open or short between ignition coil and ignition switch
©Repair harness or connectors.
4 CHECK GROUND CIRCUIT
1. Turn ignition switch ªOFFº.
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 SIGNALSR20DE
Diagnostic Procedure
EC-309

Component InspectionNCEC0573IGNITION COILNCEC0573S011. 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 25ÉC (77ÉF)]
7 - 8 (Primary coil)Approximately 0.5 - 1.0W
8 - secondary terminal on distributor
head (Secondary coil)Approximately 25 kW
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 ªComponent Inspectionº, 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 ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-SR-114.
©INSPECTION END
SEF237X Coil tower metal tip
SEF238X Coil tower metal tip
IGNITION SIGNALSR20DE
Component Inspection
EC-310