Nissan Almera Tino V10 (2001 year). Manual — part 56
SEF611Y
SEF068XA
EGR TEMPERATURE SENSOR
NLEC1295S07
Check resistance change and resistance value.
<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
If NG, replace EGR temperature sensor.
EGR VOLUME CONTROL SYSTEM (WHERE FITTED)
QG18DE
Component Inspection (Cont’d)
EC-457
Description
NLEC1297
SYSTEM DESCRIPTION
NLEC1297S01
Sensor
Input Signal to ECM
ECM func-
tion
Actuator
Crankshaft position sensor (POS)
Engine speed
EVAP can-
ister purge
control
EVAP canister purge volume
control solenoid 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
Battery
Battery voltage
Ignition switch
Start signal
Closed throttle position switch
Closed throttle position
Throttle position sensor
Throttle position
Heated oxygen sensor 1 (front)
Density of oxygen in exhaust gas
(Mixture ratio feedback signal)
Vehicle speed sensor
Vehicle speed
This system controls flow rate of fuel vapor from the EVAP canis-
ter. The opening of the vapor by-pass passage in the EVAP canis-
ter purge volume control solenoid valve changes to control the flow
rate. The EVAP canister purge volume control solenoid valve
repeats ON/OFF operation according to the signal sent from the
ECM. The opening of the valve varies for optimum engine control.
The optimum value stored in the ECM is determined by consider-
ing various engine conditions. When the engine is operating, the
flow rate of fuel vapor from the EVAP canister is regulated as the
air flow changes.
SEF337U
COMPONENT DESCRIPTION
NLEC1297S02
The EVAP canister purge volume control solenoid valve uses a
ON/OFF duty to control the flow rate of fuel vapor from the EVAP
canister. The EVAP canister purge volume control solenoid valve
is moved by ON/OFF pulses from the ECM. The longer the ON
pulse, the greater the amount of fuel vapor that will flow through the
valve.
CONSULT-II Reference Value in Data Monitor
Mode
NLEC1298
MONITOR ITEM
CONDITION
SPECIFICATION
PURG VOL C/V
+
Engine: After warming up
+
No-load
Idle
0%
Revving engine
—
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE
QG18DE
Description
EC-458
ECM Terminals and Reference Value
=NLEC1299
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.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
14
GY/L
EVAP canister purge vol-
ume control solenoid valve
[Engine is running]
+
Warm-up condition
+
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
+
Warm-up condition
+
2,000 rpm
5 - 12V
SEF975W
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE
QG18DE
ECM Terminals and Reference Value
EC-459
Wiring Diagram
NLEC1302
MODELS WITH ECM IN ENGINE COMPARTMENT
NLEC1302S01
YEC751
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE
QG18DE
Wiring Diagram
EC-460
MODELS WITH ECM IN CABIN
NLEC1302S02
YEC898
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE
QG18DE
Wiring Diagram (Cont’d)
EC-461
Diagnostic Procedure
NLEC1303
1
INSPECTION START
Do you have CONSULT-II?
Yes or No
Yes
©
GO TO 2.
No
©
GO TO 3.
2
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE CONTROL FUNCTION
With CONSULT-II
1. Turn ignition switch “OFF”.
2. Disconnect the EVAP purge hose connected to the EVAP canister purge volume control solenoid valve at the EVAP
canister.
3. Turn ignition switch “ON” and select “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-II.
4. Start engine and let it idle.
5. Change the valve opening percentage touching “Qu” and “Qd” and check for vacuum existence under the following
conditions.
SEF156Z
OK or NG
OK
©
GO TO 4.
NG
©
GO TO 5.
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE
QG18DE
Diagnostic Procedure
EC-462
3
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE CONTROL FUNCTION
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch “OFF”.
3. Disconnect the EVAP purge hose connected to the EVAP canister purge volume control solenoid valve at the EVAP
canister.
4. Start engine and let it idle for at least 90 seconds.
5. Check for vacuum existence at the EVAP purge hose under the following conditions.
SEF760Z
OK or NG
OK
©
GO TO 4.
NG
©
GO TO 5.
4
CHECK EVAP CANISTER
1. Turn ignition switch “OFF”.
2. Remove EVAP canister.
3. Block port B of EVAP canister.
4. Blow air through port A orally, and confirm that air flows freely through port C with check valve resistance.
5. Block port A of EVAP canister.
6. Blow air through port B orally, and confirm that air flows freely through port C.
SEF917W
OK or NG
OK
©
INSPECTION END
NG
©
Replace EVAP canister.
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE
QG18DE
Diagnostic Procedure (Cont’d)
EC-463
5
CHECK POWER SUPPLY
1. Turn ignition switch “OFF”.
2. Disconnect EVAP canister purge volume control solenoid valve harness connector.
SEF076X
3. Turn ignition switch “ON”.
4. Check voltage between terminals 1 and engine ground with CONSULT-II or tester.
SEF606Y
OK or NG
OK
©
GO TO 7.
NG
©
GO TO 6.
6
DETECT MALFUNCTIONING PART
Check the following.
+
Harness connectors E75, F35 (where fitted)
+
Harness connectors M72, F44 (where fitted)
+
10A fuse
+
Harness for open or short between EVAP canister purge volume control solenoid valve and fuse
©
Repair harness or connectors.
7
CHECK OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 14 and 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 8.
NG
©
Repair open circuit or short to ground or short to power in harness or connectors.
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE
QG18DE
Diagnostic Procedure (Cont’d)
EC-464
8
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Refer to “Component Inspection” EC-465.
OK or NG
OK
©
GO TO 9.
NG
©
Replace EVAP canister purge volume control solenoid valve.
9
CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-145.
©
INSPECTION END
SEF677Y
SEF661U
Component Inspection
NLEC1304
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE
NLEC1304S01
With CONSULT-II
1)
Start engine.
2)
Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with
CONSULT-II. Check that engine speed varies according to the
valve opening.
If OK, inspection end. If NG, go to following step.
3)
Check air passage continuity.
Condition
PURG VOL CONT/V value
Air passage continuity
between A and B
100.0%
Yes
0.0%
No
If NG, replace the EVAP canister purge volume control sole-
noid valve.
Without CONSULT-II
Check air passage continuity.
Condition
Air passage continuity
between A and B
12V direct current supply between ter-
minals
Yes
No supply
No
If NG, replace the EVAP canister purge volume control solenoid
valve.
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE
QG18DE
Diagnostic Procedure (Cont’d)
EC-465
Description
NLEC1305
SYSTEM DESCRIPTION
NLEC1305S01
Sensor
Input Signal to ECM
ECM func-
tion
Actuator
Crankshaft position sensor (POS)
Engine speed
Idle air
control
IACV-AAC valve
Camshaft position sensor (PHASE)
Engine speed and cylinder number
Engine coolant temperature sensor
Engine coolant temperature
Ignition switch
Start signal
Throttle position sensor
Throttle position
PNP switch
Park/Neutral position
Air conditioner switch
Air conditioner operation
Power steering oil pressure switch
Power steering load signal
Battery
Battery voltage
Vehicle speed sensor
Vehicle speed
Cooling fan
Cooling fan operation
Electrical load
Electrical load signal
This system automatically controls engine idle speed to a specified
level. Idle speed is controlled through fine adjustment of the
amount of air which by-passes the throttle valve via IACV-AAC
valve. The IACV-AAC valve changes the opening of the air by-pass
passage to control the amount of auxiliary air. This valve is actu-
ated by a step motor built into the valve, which moves the valve in
the axial direction in steps corresponding to the ECM output sig-
nals. One step of IACV-AAC valve movement causes the respec-
tive opening of the air by-pass passage. (i.e. when the step
advances, the opening is enlarged.) The opening of the valve is
varied to allow for optimum control of the engine idling speed. The
crankshaft position sensor (POS) detects the actual engine speed
and sends a signal to the ECM. The ECM then controls the step
position of the IACV-AAC valve so that engine speed coincides with
the target value memorized in ECM. The target engine speed is the
lowest speed at which the engine can operate steadily. The opti-
mum value stored in the ECM is determined by taking into consid-
eration various engine conditions, such as during warm up,
deceleration, and engine load (air conditioner, power steering, cool-
ing fan operation and electrical load).
SEF937W
COMPONENT DESCRIPTION
NLEC1305S02
IACV-AAC Valve
NLEC1305S0201
The IACV-AAC valve is operated by a step motor for centralized
control of auxiliary air supply. This motor has four winding phases
and is actuated by the output signals of ECM which turns ON and
OFF two windings each in sequence. Each time the IACV-AAC
valve opens or closes to change the auxiliary air quantity, the ECM
sends a pulse signal to the step motor. When no change in the
auxiliary air quantity 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.
IDLE AIR CONTROL VALVE (IACV) —
AUXILIARY AIR CONTROL (AAC) VALVE
QG18DE
Description
EC-466
CONSULT-II Reference Value in Data Monitor
Mode
NLEC1306
MONITOR ITEM
CONDITION
SPECIFICATION
IACV-AAC/V
+
Engine: After warming up
+
Air conditioner switch: OFF
+
Shift lever: “N”
+
No-load
Idle
5 - 25 steps
2,000 rpm
—
ECM Terminals and Reference Value
NLEC1307
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.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
6
7
15
16
BR
LG
P
OR
IACV-AAC valve
[Engine is running]
+
Warm-up condition
+
Idle speed
0.1 - 14V
IDLE AIR CONTROL VALVE (IACV) —
AUXILIARY AIR CONTROL (AAC) VALVE
QG18DE
CONSULT-II Reference Value in Data Monitor Mode
EC-467
Wiring Diagram
NLEC1310
MODELS WITH ECM IN ENGINE COMPARTMENT
NLEC1310S01
YEC752
IDLE AIR CONTROL VALVE (IACV) —
AUXILIARY AIR CONTROL (AAC) VALVE
QG18DE
Wiring Diagram
EC-468
MODELS WITH ECM IN CABIN
NLEC1310S02
YEC899
IDLE AIR CONTROL VALVE (IACV) —
AUXILIARY AIR CONTROL (AAC) VALVE
QG18DE
Wiring Diagram (Cont’d)
EC-469
Diagnostic Procedure
NLEC1311
1
CHECK OVERALL FUNCTION
1. Turn ignition switch “OFF”.
2. Read the voltage signal between ECM terminals 6, 7, 15, 16 (IACV-AAC valve signal) and ground with an oscilloscope.
3. Turn ignition switch “ON”, wait at least 5 seconds and then “OFF”.
4. Verify that the oscilloscope screen shows the signal wave as shown below at least once every 10 seconds after turning
ignition switch “OFF”.
SEF756Z
OK or NG
OK
©
INSPECTION END
NG
©
GO TO 2.
2
CHECK POWER SUPPLY
1. Turn ignition switch “OFF”.
2. Disconnect IACV-AAC valve harness connector.
NEF316A
3. Turn ignition switch “ON”.
4. Check voltage between terminal 2, 5 and ground with CONSULT-II or tester.
SEF343X
OK or NG
OK
©
GO TO 4.
NG
©
GO TO 3.
IDLE AIR CONTROL VALVE (IACV) —
AUXILIARY AIR CONTROL (AAC) VALVE
QG18DE
Diagnostic Procedure
EC-470
3
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 IACV-AAC and ECM relay
©
Repair harness or connectors or replace fuse or ECM relay.
4
CHECK OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check harness continuity between
ECM terminal 6 and IACV-AAC valve terminal 1,
ECM terminal 7 and IACV-AAC valve terminal 4,
ECM terminal 15 and IACV-AAC valve terminal 3,
ECM terminal 16 and IACV-AAC 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 5.
NG
©
Repair open circuit or short to ground or short to power in harness or connectors.
5
CHECK AIR CONTROL VALVE (POWER STEERING) OPERATION-I
1. Reconnect the ECM harness connector and IACV-AAC valve harness connector.
2. Disconnect the vacuum hose connected to the air control valve (Power steering) at the intake air duct.
3. Start engine and let it idle.
4. Check vacuum hose for vacuum existence.
SEF162Z
Vacuum does not exist or slightly exist.
OK or NG
OK
©
GO TO 6.
NG
©
Replace air control valve (Power steering).
IDLE AIR CONTROL VALVE (IACV) —
AUXILIARY AIR CONTROL (AAC) VALVE
QG18DE
Diagnostic Procedure (Cont’d)
EC-471
6
CHECK AIR CONTROL VALVE (POWER STEERING) OPERATION-II
Check the vacuum hose for vacuum existence when steering wheel is turned.
SEF162Z
Vacuum should exist.
OK or NG
OK
©
GO TO 9.
NG
©
GO TO 7.
7
CHECK VACUUM PORT
1. Stop engine.
2. Disconnect the vacuum hose connected to the air control valve (Power steering) at the vacuum port.
3. Blow air into vacuum port.
4. Check that air flows freely.
SEF924Y
OK or NG
OK
©
GO TO 8.
NG
©
Repair or clean vacuum port.
IDLE AIR CONTROL VALVE (IACV) —
AUXILIARY AIR CONTROL (AAC) VALVE
QG18DE
Diagnostic Procedure (Cont’d)
EC-472
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст