Nissan Almera Tino V10 (2001 year). Manual — part 55
MODELS WITH ECM IN CABIN
NLEC1285S02
YEC897
CRANKSHAFT POSITION SENSOR (POS)
QG18DE
Wiring Diagram (Cont’d)
EC-441
Diagnostic Procedure
NLEC1286
1
CHECK OVERALL FUNCTION
1. Start engine and let it idle.
2. Check voltage between ECM terminal 85 and ground.
SEF761Z
OK or NG
OK
©
INSPECTION END
NG
©
GO TO 2.
2
RETIGHTEN GROUND SCREWS
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground screws.
JEF104Y
©
GO TO 3.
CRANKSHAFT POSITION SENSOR (POS)
QG18DE
Diagnostic Procedure
EC-442
3
CHECK POWER SUPPLY
1. Disconnect crankshaft position sensor harness connector.
JEF835Z
2. Turn ignition switch “ON”.
3. Check voltage between terminal 3 and ground with CONSULT-II or tester.
SEF113Y
OK or NG
OK
©
GO TO 5.
NG
©
GO TO 4.
4
DETECT MALFUNCTIONING PART
Check the following.
+
Joint connector-3 (where fitted)
+
Harness connectors M72, F44 (where fitted)
+
Harness connectors M11, E106 (LHD models) (where fitted)
+
Harness connectors M78, E120 (RHD models) (where fitted)
+
Joint connector F46 (where fitted)
+
Harness connectors E76, F36 (where fitted)
+
Harness for open or short between joint connector and ECM relay
+
Harness for open or short between crankshaft position sensor and joint connector
+
Harness for open or short between joint connector and ECM
+
ECM relay
©
Repair open circuit or short to ground or short to power in harness or connectors.
CRANKSHAFT POSITION SENSOR (POS)
QG18DE
Diagnostic Procedure (Cont’d)
EC-443
5
CHECK INPUT SIGNAL CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connectors.
JEF835Z
3. Check continuity between ECM terminal 85 and crankshaft position sensor harness connector terminal 2.
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
©
Repair open circuit or short to ground or short to power in harness or connectors.
6
CHECK GROUND CIRCUIT
1. Reconnect ECM harness connector.
2. Check harness continuity between terminal 1 and engine ground.
Refer to wiring diagram.
Continuity should exist.
3. Also check harness for short to power.
OK or NG
OK
©
GO TO 8.
NG
©
GO TO 7.
7
DETECT MALFUNCTIONING PART
Check the following.
+
Joint connector-2 (where fitted)
+
Joint connector F46 (where fitted)
+
Harness for open between crankshaft position sensor harness connector terminal 1 and engine ground.
©
Repair open circuit or short to power in harness or connectors.
8
CHECK CRANKSHAFT POSITION SENSOR
Refer to “Component Inspection”, EC-445.
OK or NG
OK
©
GO TO 9.
NG
©
Replace crankshaft position sensor.
9
CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-145.
©
INSPECTION END
CRANKSHAFT POSITION SENSOR (POS)
QG18DE
Diagnostic Procedure (Cont’d)
EC-444
SEF121X
Component Inspection
NLEC1287
CRANKSHAFT POSITION SENSOR (POS)
NLEC1287S01
1.
Disconnect crankshaft position sensor (POS) harness connec-
tor.
2.
Loosen the fixing bolt of the sensor.
3.
Remove the sensor.
4.
Visually check the sensor for chipping.
SEF122X
5.
Check resistance as shown in the figure.
Terminal No. (Polarity)
Resistance
Ω
[at 25°C (77°F)]
3 (+) - 1 (–)
Except 0 or
∞
2 (+) - 1 (–)
3 (+) - 2 (–)
If NG, replace crankshaft position sensor.
CRANKSHAFT POSITION SENSOR (POS)
QG18DE
Component Inspection
EC-445
Description
NLEC1288
SYSTEM DESCRIPTION
NLEC1288S01
Sensor
Input Signal to ECM
ECM func-
tion
Actuator
Crankshaft position sensor (POS)
Engine speed
EGR vol-
ume control
EGR volume control valve
Camshaft position sensor (PHASE)
Engine speed and cylinder number
Mass air flow sensor
Amount of intake air
Engine coolant temperature sensor
Engine coolant temperature
Ignition switch
Start signal
Throttle position sensor
Throttle position
Vehicle speed sensor
Vehicle speed
Battery
Battery voltage
Air conditioner switch
Air conditioner operation
Power steering oil pressure switch
Power steering load signal
Electrical load
Electrical load signal
PNP switch
Park/Neutral position signal
This system controls flow rate of EGR led from exhaust manifold
to intake manifold. The opening of the EGR by-pass passage in the
EGR volume control valve changes to control the flow rate. A
built-in step motor moves the valve in steps corresponding to the
ECM output pulses. The opening of the valve varies for optimum
engine control. The optimum value stored in the ECM is determined
by considering various engine conditions. The EGR volume control
valve remains close under the following conditions.
+
Low engine coolant temperature
+
Engine starting
+
High-speed engine operation
+
Extremely light load engine operation
+
Engine idling
+
Excessively high engine coolant temperature
+
Wide open throttle
+
Mass air flow sensor malfunction
+
Low battery voltage
SEF551W
EGR VOLUME CONTROL SYSTEM (WHERE FITTED)
QG18DE
Description
EC-446
SEF552W
COMPONENT DESCRIPTION
NLEC1288S02
EGR Volume Control Valve
NLEC1288S0201
The EGR volume control valve uses a step motor to control the flow
rate of EGR from exhaust manifold. This motor has four winding
phases. It operates according to the output pulse signal of the
ECM. Two windings are turned ON and OFF in sequence. Each
time an ON pulse is issued, the valve opens or closes, changing
the flow rate. When no change in the flow rate is needed, the ECM
does not issue the pulse signal. A certain voltage signal is issued
so that the valve remains at that particular opening.
SEF599K
EGR Temperature Sensor
NLEC1288S0203
The EGR temperature sensor detects temperature changes in the
EGR passageway. When the EGR volume control valve opens, hot
exhaust gases flow, and the temperature in the passageway
changes. The EGR temperature sensor is a thermistor that modi-
fies a voltage signal sent from the ECM. This modified signal then
returns to the ECM as an input signal. As the temperature
increases, EGR temperature sensor resistance decreases. This
sensor is not used to control the engine system.
SEF068XA
<Reference data>
EGR temperature
°C (°F)
Voltage*
V
Resistance
M
Ω
0 (32)
4.56
0.62 - 1.05
50 (122)
2.25
0.065 - 0.094
100 (212)
0.59
0.011 - 0.015
*: These data are reference values and are measured between ECM terminal 72
(EGR temperature sensor) and ground.
When EGR system is operating.
Voltage: 0 - 1.5V
CAUTION:
Do not use ECM ground terminals when measuring input/
output voltage. Doing so may result in damage to the ECM’s
transistor. Use a ground other than ECM terminals, such as
the ground.
CONSULT-II Reference Value in Data Monitor
Mode
NLEC1289
Specification data are reference values.
MONITOR ITEM
CONDITION
SPECIFICATION
EGR TEMP SEN
+
Engine: After warming up
Less than 4.5V
EGR VOL CON/V
+
Engine: After warming up
+
Air conditioner switch: “OFF”
+
Shift lever: “N”
+
No-load
Idle
0 step
Revving engine up to 3,000 rpm
quickly
10 - 55 step
EGR VOLUME CONTROL SYSTEM (WHERE FITTED)
QG18DE
Description (Cont’d)
EC-447
ECM Terminals and Reference Value
NLEC1290
Specification 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
COLOR
ITEM
CONDITION
DATA (DC Voltage)
8
9
17
18
SB
W/B
R/Y
BR/R
EGR volume control valve
[Engine is running]
+
Idle speed
0 - 14V
58
B
Sensor’s ground
[Engine is running]
+
Warm-up condition
+
Idle speed
0V
72
P/B
EGR temperature sensor
[Engine is running]
+
Warm-up condition
+
Idle speed
Less than 4.5V
[Engine is running]
+
Warm-up condition
+
EGR system is operating.
0 - 1V
EGR VOLUME CONTROL SYSTEM (WHERE FITTED)
QG18DE
ECM Terminals and Reference Value
EC-448
Wiring Diagram
NLEC1293
MODELS WITH ECM IN ENGINE COMPARTMENT
NLEC1293S01
YEC664
EGR VOLUME CONTROL SYSTEM (WHERE FITTED)
QG18DE
Wiring Diagram
EC-449
MODELS WITH ECM IN CABIN
NLEC1293S02
YEC884
EGR VOLUME CONTROL SYSTEM (WHERE FITTED)
QG18DE
Wiring Diagram (Cont’d)
EC-450
Diagnostic Procedure
NLEC1296
1
INSPECTION START
Do you have CONSULT-II?
Yes or No
Yes
©
GO TO 2.
No
©
GO TO 4.
2
CHECK OVERALL FUNCTION-I
With CONSULT-II
1. Turn ignition switch “ON”.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Confirm that “COOLAN TEMP/S” indicates less than 40°C (104°F).
If the indication is out of range, cool the engine down.
SEF013Y
4. Start engine and let it idle.
5. Make sure that “EGR TEMP SEN” in “DATA MONITOR” mode indicates more than 3V. Print out the screen or note the
indication.
SEF014Y
OK or NG
OK
©
GO TO 3.
NG
©
GO TO 6.
EGR VOLUME CONTROL SYSTEM (WHERE FITTED)
QG18DE
Diagnostic Procedure
EC-451
3
CHECK OVERALL FUNCTION-II
With CONSULT-II
1. Warm up engine to normal operating temperature.
2. Select “EGR VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-II.
3. Keep engine speed at 2,000 rpm and set the “EGR VOL CONT/V” opening to “20 step”.
4. Make sure the “EGR TEMP SEN” indicated is lower than the value indicated in test No. 2 by 1.0V or more.
SEF015Y
OK or NG
OK
©
INSPECTION END
NG
©
GO TO 6.
4
CHECK OVERALL FUNCTION-I
Without CONSULT-II
1. Turn ignition switch “ON”.
2. Confirm that the voltage between ECM terminal 70 (Engine coolant temperature sensor signal) and ground is more
than 2.72V.
If the voltage is out of range, cool the engine down.
SEF016Y
3. Start engine and let it idle.
4. Make sure that the voltage between ECM terminal 72 (EGR temperature sensor signal) and ground is more than 3V.
SEF755Z
OK or NG
OK
©
GO TO 5.
NG
©
GO TO 6.
EGR VOLUME CONTROL SYSTEM (WHERE FITTED)
QG18DE
Diagnostic Procedure (Cont’d)
EC-452
5
CHECK OVERALL FUNCTION-II
Without CONSULT-II
1. Warm up engine to normal operating temperature.
2. Rev engine from idle up to about 3,000 rpm two to three times.
3. Make sure the voltage between ECM terminal 72 and ground is lower than the voltage measured in test No. 4 by 1.0V
or more.
SEF755Z
OK or NG
OK
©
INSPECTION END
NG
©
GO TO 6.
6
CHECK EGR TEMPERATURE SENSOR POWER SUPPLY
1. Turn ignition switch “OFF”.
2. Disconnect EGR temperature sensor harness connector.
SEF127X
3. Turn ignition switch “ON”.
4. Check voltage between terminal 1 and ground with CONSULT-II or tester.
SEF500Y
OK or NG
OK
©
GO TO 7.
NG
©
Repair harness or connectors.
EGR VOLUME CONTROL SYSTEM (WHERE FITTED)
QG18DE
Diagnostic Procedure (Cont’d)
EC-453
7
CHECK EGR TEMPERATURE SENSOR GROUND CIRCUIT
1. Turn ignition switch “OFF”.
2. Check harness continuity between EGR temperature sensor harness terminal 2 and engine ground.
Refer to wiring diagram.
Continuity should exist.
3. Also check harness for short to power.
OK or NG
OK
©
GO TO 9.
NG
©
GO TO 8.
8
DETECT MALFUNCTIONING PART
Check the following.
+
Harness for open or short between EGR temperature sensor and ECM
+
Joint connector-1 (where fitted)
+
Joint connector F46 (where fitted)
©
Repair open circuit or short to power in harness or connector.
9
CHECK EGR TEMPERATURE SENSOR
Refer to “Component Inspection”, EC-457.
OK or NG
OK
©
GO TO 10.
NG
©
Replace EGR temperature sensor.
10
CHECK EGR VOLUME CONTROL VALVE POWER SUPPLY
1. Disconnect EGR volume control valve harness connector.
2. Turn ignition switch “ON”.
3. Check voltage between terminals 2, 5 and ground with CONSULT-II or tester.
SEF782Z
OK or NG
OK
©
GO TO 12.
NG
©
GO TO 11.
11
DETECT MALFUNCTIONING PART
Check the following.
+
15A fuse
+
Harness connectors E76, F36
+
Harness for open or short between fuse and ECM relay
+
ECM relay
+
Harness for open or short between EGR volume control valve and ECM relay
©
Repair harness or connectors or replace fuse or ECM relay.
EGR VOLUME CONTROL SYSTEM (WHERE FITTED)
QG18DE
Diagnostic Procedure (Cont’d)
EC-454
12
CHECK EGR VOLUME CONTROL VALVE OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check harness continuity between
ECM terminal 8 and EGR volume control valve terminal 1,
ECM terminal 9 and EGR volume control valve terminal 4,
ECM terminal 17 and EGR volume control valve terminal 3,
ECM terminal 18 and EGR volume control valve terminal 6.
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 13.
NG
©
Repair open circuit, short to ground or short to power in harness connectors.
13
CHECK EGR PASSAGE
Check EGR passage for clogging and cracks.
OK or NG
OK
©
GO TO 14.
NG
©
Repair or replace EGR passage.
14
CHECK EGR VOLUME CONTROL VALVE
Refer to “COMPONENT INSPECTION”, EC-318.
OK or NG
OK
©
GO TO 15.
NG
©
Replace EGR volume control valve.
15
CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-145.
©
INSPECTION END
EGR VOLUME CONTROL SYSTEM (WHERE FITTED)
QG18DE
Diagnostic Procedure (Cont’d)
EC-455
SEF069X
SEF783Z
SEF015Y
SEF560W
Component Inspection
NLEC1295
EGR VOLUME CONTROL VALVE
NLEC1295S01
With CONSULT-II
1)
Disconnect EGR volume control valve harness connector.
2)
Check resistance between the following terminals.
terminal 2 and terminals 1, 3
terminal 5 and terminals 4, 6
Temperature °C (°F)
Resistance
Ω
20 (68)
20 - 24
3)
Reconnect EGR volume control valve harness connector.
4)
Remove EGR volume control valve from cylinder head.
(The EGR volume control valve harness connector should
remain connected.)
5)
Turn ignition switch “ON”.
6)
Perform “EGR VOL CONT/V” in “ACTIVE TEST” mode with
CONSULT-II. Check that EGR volume control valve shaft
moves smoothly forward and backward according to the valve
opening.
If NG, replace the EGR volume control valve.
Without CONSULT-II
1)
Disconnect EGR volume control valve harness connector.
2)
Check resistance between the following terminals.
terminal 2 and terminals 1, 3
terminal 5 and terminals 4, 6
Temperature °C (°F)
Resistance
Ω
20 (68)
20 - 24
3)
Turn ignition switch “ON” and “OFF”. Check that EGR volume
control valve shaft moves smoothly forward and backward
according to the ignition switch position.
If NG, replace the EGR volume control valve.
EGR VOLUME CONTROL SYSTEM (WHERE FITTED)
QG18DE
Diagnostic Procedure (Cont’d)
EC-456
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