NISSAN ALMERA TINO 2001 Service Repair Manual

SEF781Z
Component DescriptionNLEC1847When the gear position is ªPº or ªNº, park/neutral position (PNP)
switch is ªONº.
ECM detects the park/neutral position when continuity with ground
exists.
CONSULT-II Reference Value in Data Monitor
Mode
NLEC1848Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
P/N POSI SW+Ignition switch: ONShift lever: ªPº or ªNº ON
Except above OFF
ECM Terminals and Reference ValueNLEC1849Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
42 G/OR PNP switch[Ignition switch ªONº]
+Gear position is ªNº or ªPºApproximately 0V
[Ignition switch ªONº]
+Except the above gear positionBATTERY VOLTAGE
(11 - 14V)
PARK/NEUTRAL POSITION (PNP) SWITCHSR20DE
Component Description
EC-1016

Wiring DiagramNLEC1853TYPE-1NLEC1853S01
YEC760
PARK/NEUTRAL POSITION (PNP) SWITCHSR20DE
Wiring Diagram
EC-1017

TYPE-2NLEC1853S02
YEC939
PARK/NEUTRAL POSITION (PNP) SWITCHSR20DE
Wiring Diagram (Cont'd)
EC-1018

Diagnostic ProcedureNLEC1854
1 INSPECTION START
Do you have CONSULT-II?
YesorNo
Ye s©GO TO 2.
No©GO TO 3.
2 CHECK OVERALL FUNCTION
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªP/N POSI SWº in ªDATA MONITORº mode with CONSULT-II.
3. Check the ªP/N POSI SWº signal under the following conditions.
SEF028Y
OK or NG
OK©INSPECTION END
NG©GO TO 4.
3 CHECK OVERALL FUNCTION
Without CONSULT-II
1. Turn ignition switch ªONº.
2. Check voltage between ECM terminal 42 and ground under the following conditions.
SEF811Z
OK or NG
OK©INSPECTION END
NG©GO TO 4.
PARK/NEUTRAL POSITION (PNP) SWITCHSR20DE
Diagnostic Procedure
EC-1019

4 CHEC KGROUN DCIRCUIT
SEF781Z
5 DETEC TMALFUNCTIONIN GPART
6 CHEC KINPU TSIGNA LCIRCUIT
7 DETEC TMALFUNCTIONIN GPART
8 CHEC KPN PSWITCH
9 CHEC KINTERMITTEN TINCIDENT
Diagnostic Procedure (Cont'd)

SEF138X
Component DescriptionNLEC1855The 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
NLEC1856
MONITOR ITEM CONDITION SPECIFICATION
INJ PULSE-B1+Engine: After warming up
+Air conditioner switch: OFF
+Shift lever: ªNº
+No-loadIdle 2.4 - 3.2 msec
2,000 rpm 1.9 - 2.8 msec
B/FUEL SCHDL+Engine: After warming up
+Air conditioner switch: OFF
+Shift lever: ªNº
+No-loadIdle 2.4 - 3.2 msec
2,000 rpm 1.4 - 2.8 msec
ECM Terminals and Reference ValueNLEC1857Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the 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]
+Warm-up condition
+Idle speedBATTERY VOLTAGE
(11 - 14V)
SEF011W
[Engine is running]
+Warm-up condition
+Engine speed is 2,000 rpmBATTERY VOLTAGE
(11 - 14V)
SEF012W
INJECTORSR20DE
Component Description
EC-1021

Wiring DiagramNLEC1858MODELS WITH ECM IN ENGINE COMPARTMENTNLEC1858S01
YEC711
INJECTORSR20DE
Wiring Diagram
EC-1022

MODELS WITH ECM IN CABINNLEC1858S02
YEC940
INJECTORSR20DE
Wiring Diagram (Cont'd)
EC-1023

Diagnostic ProcedureNLEC1859
1 CHECK OVERALL FUNCTION
With CONSULT-II
1. Start engine.
2. Perform ªPOWER BALANCEº in ªACTIVE TESTº mode with CONSULT-II.
SEF190Y
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.
INJECTORSR20DE
Diagnostic Procedure
EC-1024

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.
SEF986W
Voltage: Battery voltage
OK or NG
OK©GO TO 4.
NG©GO TO 3.
3 DETECT MALFUNCTIONING PART
Check the following.
+10A fuse
+Harness connectors F38, M50 (where fitted)
+Harness connectors M72, F44 (where fitted)
+Harness connectors F13, F60
+Harness 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.
+Harness connectors F60, F13
+Harness for open or short between ECM and injector.
©Repair open circuit or short to ground or short to power in harness or connectors.
INJECTORSR20DE
Diagnostic Procedure (Cont'd)
EC-1025