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Nissan Altima HL32 Hybrid. Manual - part 281

EC-108

< COMPONENT DIAGNOSIS >

[QR25DE]

TROUBLE DIAGNOSIS - SPECIFICATION VALUE

5. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

6. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the each indication is

within the SP value.

NOTE:

Check “A/F ALPHA-B1” for approximately 1 minute because they may fluctuate. It is NG if the indication is

out of the SP value even a little.

Is the measurement value within the SP value?

YES

>> GO TO 17.

NO-1 >> Less than the SP value: GO TO 2.

NO-2 >> More than the SP value: GO TO 3.

CHECK “B/FUEL SCHDL”

1. Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is

within the SP value.

2. Shift the selector lever to P position.
Is the measurement value within the SP value?

YES

>> GO TO 4.

>> More than the SP value: GO TO 19.

CHECK “B/FUEL SCHDL”

1. Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is

within the SP value.

2. Shift the selector lever to P position.
Is the measurement value within the SP value?

YES

>> GO TO 6.

NO-1 >> More than the SP value: GO TO 6.

NO-2 >> Less than the SP value: GO TO 25.

CHECK “A/F ALPHA-B1”

1. Turn ignition switch OFF.

2. Disconnect PCV hose, and then plug it.

3. Turn ignition switch ON (READY).

4. Depressed the accelerator pedal and keep it.

5. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

6. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within

the SP value.

7. Shift the selector lever to P position.
Is the measurement value within the SP value?

YES

>> GO TO 5.

>> GO TO 6.

CHANGE ENGINE OIL

1. Turn ignition switch OFF.

2. Change engine oil.

NOTE:

This symptom may occur when a large amount of gasoline is mixed with engine oil because of driving

conditions (such as when engine oil temperature does not rise enough since a journey distance is too

short during winter). The symptom will not be detected after changing engine oil or changing driving con-

dition.

>> INSPECTION END

CHECK FUEL PRESSURE

TROUBLE DIAGNOSIS - SPECIFICATION VALUE

EC-109

< COMPONENT DIAGNOSIS >

[QR25DE]

Check fuel pressure. (Refer to

EC-465, "Inspection"

Is the inspection result normal?

YES

>> GO TO 9.

NO-1 >> Fuel pressure is too high: Replace “fuel filter and fuel pump assembly” and then GO TO 8.

NO-2 >> Fuel pressure is too low: GO TO 7.

DETECT MALFUNCTIONING PART

Check fuel hoses and fuel tubes for clogging
Is the inspection result normal?

YES

>> Replace “fuel filter and fuel pump assembly” and then GO TO 8.

>> Repair or replace and then GO TO 8.

CHECK “A/F ALPHA-B1”

1. Turn ignition switch ON (READY).

2. Depressed the accelerator pedal and keep it.

3. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

4. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within

the SP value.

5. Shift the selector lever to P position.
Is the measurement value within the SP value?

YES

>> INSPECTION END

>> GO TO 9.

PERFORM POWER BALANCE TEST

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

2. Make sure that the each cylinder produces a momentary engine speed drop.
Is the inspection result normal?

YES

>> GO TO 12.

>> GO TO 10.

10.

DETECT MALFUNCTIONING PART

Check the following.

1. Ignition coil and its circuit (Refer to

EC-390, "Component Function Check"

2. Fuel injector and its circuit (Refer to

EC-237, "Diagnosis Procedure"

3. Intake air leakage

4. Low compression pressure (Refer to

EM-22, "Compression Pressure"

Is the inspection result normal?

YES

>> Replace fuel injector and then GO TO 11.

>> Repair or replace malfunctioning part and then GO TO 11.

11.

CHECK “A/F ALPHA-B1”

1. Turn ignition switch ON (READY).

2. Depressed the accelerator pedal and keep it.

3. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

4. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within

the SP value.

5. Shift the selector lever to P position.
Is the measurement value within the SP value?

YES

>> INSPECTION END

>> GO TO 12.

12.

CHECK A/F SENSOR 1 FUNCTION

EC-110

< COMPONENT DIAGNOSIS >

[QR25DE]

TROUBLE DIAGNOSIS - SPECIFICATION VALUE

Perform all DTC CONFIRMATION PROCEDURE related with A/F sensor 1.

• For DTC P0130, refer to

EC-179, "DTC Logic"

• For DTC P0131, refer to

EC-183, "DTC Logic"

• For DTC P0132, refer to

EC-186, "DTC Logic"

• For DTC P0133, refer to

EC-190, "DTC Logic"

• For DTC P2A00, refer to

EC-375, "DTC Logic"

Is any DTC detected?

YES

>> GO TO 15.

>> GO TO 13.

13.

CHECK A/F SENSOR 1 CIRCUIT

Perform DIAGNOSTIC PROCEDURE according to corresponding DTC.

>> GO TO 14.

14.

CHECK “A/F ALPHA-B1”

1. Lift up the vehicle.

2. Turn ignition switch ON (READY).

3. Depressed the accelerator pedal and keep it.

4. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

5. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the each indication is

within the SP value.

6. Shift the selector lever to P position.
Is the measurement value within the SP value?

YES

>> INSPECTION END

>> GO TO 15.

15.

DISCONNECT AND RECONNECT ECM HARNESS CONNECTOR

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector. Check pin terminal and connector for damage, and then reconnect it.

>> GO TO 16.

16.

CHECK “A/F ALPHA-B1”

1. Lift up the vehicle.

2. Turn ignition switch ON (READY).

3. Depressed the accelerator pedal and keep it.

4. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

5. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within

the SP value.

6. Shift the selector lever to P position.
Is the measurement value within the SP value?

YES

>> INSPECTION END

>> Detect malfunctioning part according to

EC-454, "Symptom Table"

17.

CHECK “B/FUEL SCHDL”

1. Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is

within the SP value.

2. Shift the selector lever to P position.
Is the measurement value within the SP value?

YES

>> INSPECTION END

NO-1 >> More than the SP value: GO TO 18.

TROUBLE DIAGNOSIS - SPECIFICATION VALUE

EC-111

< COMPONENT DIAGNOSIS >

[QR25DE]

NO-2 >> Less than the SP value: GO TO 25.

18.

DETECT MALFUNCTIONING PART

1. Check for the cause of large engine friction. Refer to the following.

Engine oil level is too high

Engine oil viscosity

Belt tension of power steering, alternator, A/C compressor, etc. is excessive

Noise from engine

Noise from transmission, etc.

2. Check for the cause of insufficient combustion. Refer to the following.

Valve clearance malfunction

Intake valve timing control function malfunction

Camshaft sprocket installation malfunction, etc.

>> Repair or replace malfunctioning part, and then GO TO 30.

19.

CHECK INTAKE SYSTEM

Check for the cause of uneven air flow through mass air flow sensor. Refer to the following.

• Crushed air ducts

• Malfunctioning seal of air cleaner element

• Uneven dirt of air cleaner element

• Improper specification of intake air system
Is the inspection result normal?

YES

>> GO TO 21.

>> Repair or replace malfunctioning part, and then GO TO 20.

20.

CHECK “A/F ALPHA-B1”, AND “B/FUEL SCHDL”

1. Lift up the vehicle.

2. Turn ignition switch ON (READY).

3. Depressed the accelerator pedal and keep it.

4. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

5. Select “A/F ALPHA-B1” and “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and make sure that

the each indication is within the SP value.

6. Shift the selector lever to P position.
Is the measurement value within the SP value?

YES

>> INSPECTION END

>> “B/FUEL SCHDL” is more, “A/F ALPHA-B1” is less than the SP value: GO TO 21.

21.

DISCONNECT AND RECONNECT MASS AIR FLOW SENSOR HARNESS CONNECTOR

1. Turn ignition switch OFF.

2. Disconnect mass air flow sensor harness connector. Check pin terminal and connector for damage and

then reconnect it again.

>> GO TO 22.

22.

CHECK “A/F ALPHA-B1”

1. Lift up the vehicle.

2. Turn ignition switch ON (READY).

3. Depressed the accelerator pedal and keep it.

4. Shift the selector lever to N position with engine running.

CAUTION:

Never leave the selector lever in the N position for a long period of time. In the N position, the

engine operates but electricity cannot be generated.

5. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within

the SP value.

6. Shift the selector lever to P position.

Content .. 279 280 281 282 ..