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Nissan Almera Tino V10 (2001 year). Manual - part 45

Diagnostic Procedure

NLEC0195

CHECK FOR EXHAUST AIR LEAK

1. Start engine and run it at idle.
2. Listen for an exhaust air leak before the three way catalyst.

SEF099P

OK or NG

GO TO 2.

Repair or replace.

CHECK HEATED OXYGEN SENSOR 1 (FRONT) CIRCUIT

1. Turn ignition switch “OFF”.
2. Disconnect heated oxygen sensor 1 (front) harness connector and ECM harness connector.

SEF012XA

3. Check harness continuity between ECM terminal 62 and heated oxygen sensor 1 (front) harness connector terminal 2.

Refer to wiring diagram.

Continuity should exist.

4. Check harness continuity between ECM terminal 62 [or heated oxygen sensor 1 (front) harness connector terminal 2]

and ground.

Continuity should not exist.

5. Also check harness for short to ground and short to power.

OK or NG

GO TO 3.

Repair open circuit or short to ground or short to power in harness or connectors.

DTC P0172 FUEL INJECTION SYSTEM FUNCTION

(RICH SIDE)

QG18DE

Diagnostic Procedure

EC-281

CHECK FUEL PRESSURE

1. Release fuel pressure to zero.

Refer to EC-43.

2. Install fuel pressure gauge and check fuel pressure.

At idling:

When fuel pressure regulator valve vacuum hose is connected.

Approximately 235 kPa (2.35 bar, 2.4 kg/cm

, 34 psi)

When fuel pressure regulator valve vacuum hose is disconnected.

Approximately 294 kPa (2.94 bar, 3.0 kg/cm

, 43 psi)

OK or NG

GO TO 5.

GO TO 4.

DETECT MALFUNCTIONING PART

Check the following.

Fuel pump and circuit (Refer to EC-516.)

Fuel pressure regulator (Refer to EC-44.)

Repair or replace.

CHECK MASS AIR FLOW SENSOR

With CONSULT-II

Check “MASS AIR FLOW” in “DATA MONITOR” mode with CONSULT-II.

at idling: 1.0 - 4.0 g·m/sec
at 2,500 rpm: 5.0 - 10.0 g·m/sec

With GST

Check mass air flow sensor signal in MODE 1 with GST.

at idling: 1.0 - 4.0 g·m/sec
at 2,500 rpm: 5.0 - 10.0 g·m/sec

OK or NG

GO TO 6.

Check connectors for rusted terminals or loose connections in the mass air flow sensor
circuit or engine grounds. Refer to EC-158.

DTC P0172 FUEL INJECTION SYSTEM FUNCTION

(RICH SIDE)

QG18DE

Diagnostic Procedure (Cont’d)

EC-282

CHECK FUNCTION OF INJECTORS

With CONSULT-II

1. Install all parts removed.
2. Start engine.
3. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-II.

SEF190Y

4. Make sure that each circuit produces a momentary engine speed drop.

Without CONSULT-II

1. Install all parts removed.
2. Start engine.
3. Listen to each injector operating sound.

MEC703B

Clicking noise should be heard.

OK or NG

GO TO 7.

Perform trouble diagnosis for “INJECTORS”, EC-495.

REMOVE INJECTOR

1. Confirm that the engine is cooled down and there are no fire hazards near the vehicle.
2. Turn ignition switch “OFF”.
3. Remove injector assembly. Refer to EC-44.

Keep fuel hose and all injectors connected to injector gallery.

GO TO 8.

CHECK INJECTOR

1. Disconnect all injector harness connectors.
2. Disconnect all ignition coil harness connectors.
3. Prepare pans or saucers under each injectors.
4. Crank engine for about 3 seconds.

Make sure fuel does not drip from injector.

OK or NG

OK (Does not drip)

GO TO 9.

NG (Drips)

Replace the injectors from which fuel is dripping. Always replace O-ring with new one.

DTC P0172 FUEL INJECTION SYSTEM FUNCTION

(RICH SIDE)

QG18DE

Diagnostic Procedure (Cont’d)

EC-283

CHECK INTERMITTENT INCIDENT

Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-145.

INSPECTION END

DTC P0172 FUEL INJECTION SYSTEM FUNCTION

(RICH SIDE)

QG18DE

Diagnostic Procedure (Cont’d)

EC-284

On Board Diagnosis Logic

NLEC0202

When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the CKP
sensor signal to vary, the ECM can determine that a misfire is occurring.

Sensor

Input Signal to ECM

ECM function

Crankshaft position sensor (POS)

Engine speed

On board diagnosis of misfire

The misfire detection logic consists of the following two conditions.
1. One Trip Detection Logic (Three Way Catalyst Damage)

On the first trip that a misfire condition occurs that can damage the three way catalyst (TWC) due to
overheating, the MI will blink.
When a misfire condition occurs, the ECM monitors the CKP sensor signal every 200 engine revolutions
for a change.
When the misfire condition decreases to a level that will not damage the TWC, the MI will turn off.
If another misfire condition occurs that can damage the TWC on a second trip, the MI will blink.
When the misfire condition decreases to a level that will not damage the TWC, the MI will remain on.
If another misfire condition occurs that can damage the TWC, the MI will begin to blink again.

2. Two Trip Detection Logic (Exhaust quality deterioration)

For misfire conditions that will not damage the TWC (but will affect vehicle emissions), the MI will only light
when the misfire is detected on a second trip. During this condition, the ECM monitors the CKP sensor
signal every 1,000 engine revolutions.
A misfire malfunction can be detected on any one cylinder or on multiple cylinders.

DTC No.

Malfunction is detected when ...

Check Items (Possible Cause)

P0300
0300

Multiple cylinders misfire.

Improper spark plug

Insufficient compression

Incorrect fuel pressure

EGR volume control valve

The injector circuit is open or shorted

Injectors

Intake air leak

Insufficient ignition spark

Lack of fuel

Heated oxygen sensor 1 (front)

P0301
0301

No. 1 cylinder misfires.

P0302
0302

No. 2 cylinder misfires.

P0303
0303

No. 3 cylinder misfires.

P0304
0304

No. 4 cylinder misfires.

SEF058Y

DTC Confirmation Procedure

NLEC0203

CAUTION:

Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 9 seconds
before conducting the next test.

With CONSULT-II

Turn ignition switch “ON”, and select “DATA MONITOR” mode
with CONSULT-II.

Start engine and warm it up to normal operating temperature.

DTC P0300 - P0304 NO. 4 - 1 CYLINDER MISFIRE, MULTIPLE CYLINDER

MISFIRE

QG18DE

On Board Diagnosis Logic

EC-285

Turn ignition switch “OFF” and wait at least 9 seconds.

Start engine again and drive at 1,500 - 3,000 rpm for at least
3 minutes.
Hold the accelerator pedal as steady as possible.

NOTE:
Refer to the freeze frame data for the test driving conditions.
5)

If 1st trip DTC is detected, go to “Diagnostic Procedure”,
EC-286.

With GST

Follow the procedure “With CONSULT-II” above.

Diagnostic Procedure

NLEC0204

CHECK FOR INTAKE AIR LEAK

1. Start engine and run it at idle speed.
2. Listen for the sound of the intake air leak.

OK or NG

GO TO 2.

Discover air leak location and repair.

CHECK FOR EXHAUST SYSTEM CLOGGING

Stop engine and visually check exhaust tube, three way catalyst and muffler for dents.

OK or NG

GO TO 3.

Repair or replace it.

CHECK EGR FUNCTION

Perform DTC Confirmation Procedure for DTC P1402 EGR FUNCTION (OPEN).
Refer to EC-393.

OK or NG

GO TO 4.

Repair EGR system.

DTC P0300 - P0304 NO. 4 - 1 CYLINDER MISFIRE, MULTIPLE CYLINDER

MISFIRE

QG18DE

DTC Confirmation Procedure (Cont’d)

EC-286

PERFORM POWER BALANCE TEST

With CONSULT-II

1. Perform “POWER BALANCE” in “ACTIVE TEST” mode.

SEF190Y

2. Is there any cylinder which does not produce a momentary engine speed drop?

Without CONSULT-II

When disconnecting each injector harness connector one at a time, is there any cylinder which does not produce a
momentary engine speed drop?

SEF604Y

Yes or No

Yes

GO TO 5.

GO TO 7.

CHECK INJECTOR

Does each injector make an operating sound at idle?

MEC703B

Yes or No

Yes

GO TO 6.

Check injector(s) and circuit(s). Refer to EC-495.

DTC P0300 - P0304 NO. 4 - 1 CYLINDER MISFIRE, MULTIPLE CYLINDER

MISFIRE

QG18DE

Diagnostic Procedure (Cont’d)

EC-287

CHECK IGNITION SPARK

1. Turn Ignition switch “OFF”.
2. Disconnect ignition coil assembly from rocker cover.
3. Connect a known good spark plug to the ignition coil assembly.
4. Place end of spark plug against a suitable ground and crank engine.
5. Check for spark.

SEF575Q

OK or NG

GO TO 7.

Check ignition coil, power transistor and their circuits. Refer to EC-500.

CHECK SPARK PLUGS

Remove the spark plugs and check for fouling, etc.

SEF156I

OK or NG

GO TO 8.

Repair or replace spark plug(s) with standard type one(s). For spark plug type, refer to
EM-19, “Checking and changing”.

CHECK COMPRESSION PRESSURE

Refer to EM section.

Check compression pressure.

Standard:

1,324 kPa (13.24 bar, 13.5 kg/cm

, 192 psi)/350 rpm

Minimum:

1,128 kPa (11.28 bar, 11.5 kg/cm

, 164 psi)/350 rpm

Difference between each cylinder:

98 kPa (0.98 bar, 1.0 kg/cm

, 14 psi)/350 rpm

OK or NG

GO TO 9.

Check pistons, piston rings, valves, valve seats and cylinder head gaskets.

DTC P0300 - P0304 NO. 4 - 1 CYLINDER MISFIRE, MULTIPLE CYLINDER

MISFIRE

QG18DE

Diagnostic Procedure (Cont’d)

EC-288

CHECK FUEL PRESSURE

1. Install any parts removed.
2. Release fuel pressure to zero. Refer to EC-43.
3. Install fuel pressure gauge and check fuel pressure.

JEF087Y

At idle: Approx. 235 kPa (2.35 bar, 2.4 kg/cm

, 34 psi)

OK or NG

GO TO 11.

GO TO 10.

DETECT MALFUNCTIONING PART

Check the following.

Fuel pump and circuit (Refer to EC-516.)

Fuel pressure regulator (Refer to EC-44.)

Fuel lines

Fuel filter for clogging

Repair or replace.

CHECK IGNITION TIMING

Perform “Basic Inspection”.
Refer to EC-99.

OK or NG

GO TO 12.

1. Perform “Idle Air Volume Learning”. Refer to EC-57.
2. Check camshaft position sensor (PHASE) (EC-302) and crankshaft position sensor

(POS) (EC-295).

CHECK HEATED OXYGEN SENSOR 1 (FRONT)

Refer to “Component Inspection”, EC-190.

OK or NG

GO TO 13.

Replace heated oxygen sensor 1 (front).

DTC P0300 - P0304 NO. 4 - 1 CYLINDER MISFIRE, MULTIPLE CYLINDER

MISFIRE

QG18DE

Diagnostic Procedure (Cont’d)

EC-289

CHECK MASS AIR FLOW SENSOR

With CONSULT-II

Check “MASS AIR FLOW” in “DATA MONITOR” mode with CONSULT-II.

at idling: 1.0 - 4.0 g·m/sec
at 2,500 rpm: 5.0 - 10.0 g·m/sec

With GST

Check mass air flow sensor signal in MODE 1 with GST.

at idling: 1.0 - 4.0 g·m/sec
at 2,500 rpm: 5.0 - 10.0 g·m/sec

OK or NG

GO TO 15.

GO TO 14.

CHECK CONNECTORS

Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or engine grounds.
Refer to EC-154.

OK or NG

Repair or replace it.

CHECK SYMPTOM MATRIX CHART

Check items on the rough idle symptom in “Symptom Matrix Chart”, EC-124.

OK or NG

GO TO 16.

Repair or replace.

ERASE THE 1ST TRIP DTC

Some tests may cause a 1st trip DTC to be set.
Erase the 1st trip DTC from the ECM memory after performing the tests. Refer to EC-69.

GO TO 17.

CHECK INTERMITTENT INCIDENT

Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-145.

INSPECTION END

DTC P0300 - P0304 NO. 4 - 1 CYLINDER MISFIRE, MULTIPLE CYLINDER

MISFIRE

QG18DE

Diagnostic Procedure (Cont’d)

EC-290

SEF598K

Component Description

NLEC0206

The knock sensor is attached to the cylinder block. It senses
engine knocking using a piezoelectric element. A knocking vibration
from the cylinder block is sensed as vibrational pressure. This
pressure is converted into a voltage signal and sent to the ECM.
Freeze frame data will not be stored in the ECM for the knock
sensor. The MI will not light for knock sensor malfunction. The
knock sensor has one trip detection logic.

ECM Terminals and Reference Value

NLEC0207

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)

Knock sensor

[Engine is running]

Idle speed

1.0 - 4.0V

On Board Diagnosis Logic

NLEC0208

DTC No.

Malfunction is detected when ...

Check Items (Possible Cause)

P0325
0325

An excessively low or high voltage from the knock sen-
sor is sent to ECM.

Harness or connectors
(The knock sensor circuit is open or shorted.)

Knock sensor

SEF058Y

DTC Confirmation Procedure

NLEC0209

NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 9 seconds
before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that bat-
tery voltage is more than 10V at idle.

With CONSULT-II

Turn ignition switch “ON” and select “DATA MONITOR” mode
with CONSULT-II.

Start engine and run it for at least 5 seconds at idle speed.

If DTC is detected, go to “Diagnostic Procedure”, EC-293.

With GST

Follow the procedure “With CONSULT-II” above.

DTC P0325 KNOCK SENSOR (KS)

QG18DE

Component Description

EC-291

Wiring Diagram

NLEC0210

YEC657

DTC P0325 KNOCK SENSOR (KS)

QG18DE

Wiring Diagram

EC-292

Diagnostic Procedure

NLEC0211

RETIGHTEN GROUND SCREWS

Loosen and retighten engine ground screws.

JEF104Y

GO TO 2.

CHECK INPUT SIGNAL CIRCUIT-1

1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector and knock sensor harness connector.

JEF110Y

3. Check harness continuity between knock sensor signal terminal 1 and ECM terminal 81.

Refer to wiring diagram.

Continuity should exist.

4. Also check harness for short to ground and short to power.

OK or NG

GO TO 4.

GO TO 3.

DETECT MALFUNCTIONING PART

Check the harness for open or short between knock sensor and ECM.

Repair open circuit or short to ground or short to power in harness or connectors.

CHECK KNOCK SENSOR

Refer to “Component Inspection”, EC-294.

OK or NG

GO TO 5.

Replace knock sensor.

DTC P0325 KNOCK SENSOR (KS)

QG18DE

Diagnostic Procedure

EC-293

CHECK INTERMITTENT INCIDENT

Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-145.

INSPECTION END

SEF111Y

Component Inspection

NLEC0212

KNOCK SENSOR

NLEC0212S01

Use an ohmmeter which can measure more than 10 M

Ω

Disconnect knock sensor harness connector.

Check resistance between terminal 1 and ground.

Resistance: 500 - 620 k

Ω

[at 25°C (77°F)]

CAUTION:

Discard any knock sensors that have been dropped or physi-
cally damaged. Use only new ones.

DTC P0325 KNOCK SENSOR (KS)

QG18DE

Diagnostic Procedure (Cont’d)

EC-294

SEF058X

JEF835Z

Component Description

NLEC0551

The crankshaft position sensor (POS) is located on the right-rear
wall of the cylinder block in relation to the signal plate at the rear
end of the crankshaft.
The sensor consists of a permanent magnet, and hall IC.
When the engine is running, the high and low parts of the teeth
cause the gap with the sensor to change.
The changing gap causes the magnetic field near the sensor to
change.
Due to the changing magnetic field, the voltage from the sensor
changes.
The ECM receives the voltage signal and detects the fluctuation of
the engine revolution.

ECM Terminals and Reference Value

NLEC0552

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 (AC Voltage)

Crankshaft position
sensor (POS)

[Engine is running]

Warm-up condition

Idle speed

3 - 4V

SEF979W

[Engine is running]

Engine speed is 2,000 rpm

3 - 4V

SEF980W

DTC P0335 CRANKSHAFT POSITION SENSOR (POS)

QG18DE

Component Description

EC-295

On Board Diagnosis Logic

NLEC0553

DTC No.

Malfunction is detected when ...

Check Items (Possible Cause)

P0335
0802

The 10° signal is not entered to ECM for the first few
seconds during engine cranking.

The 10° signal is not entered to ECM during engine run-
ning.

The 10° signal is not in the normal pattern at each
engine revolution.

Harness or connectors
(The crankshaft position sensor (POS) circuit is
open or shorted.)

Crankshaft position sensor (POS)

Starter motor (Refer to EL section.)

Starting system circuit (Refer to EL section.)

Dead (Weak) battery

SEF058Y

DTC Confirmation Procedure

NLEC0554

NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 9 seconds
before conducting the next test.

With CONSULT-II

Turn ignition switch “ON” and select “DATA MONITOR” mode
with CONSULT-II.

Start engine and run it for at least 2 seconds at idle speed.

If 1st trip DTC is detected, go to “Diagnostic Procedure”,
EC-299.

With GST

Follow the procedure “With CONSULT-II” above.

DTC P0335 CRANKSHAFT POSITION SENSOR (POS)

QG18DE

On Board Diagnosis Logic

EC-296

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