Qashqai J11. Engine control system (K9K) - part 8

 

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Qashqai J11. Engine control system (K9K) - part 8

 

 

ENGINE CONTROL SYSTEM

ECK-113

< WIRING DIAGRAM >

[K9K]

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JRBWC6856GB

ECK-114

< WIRING DIAGRAM >

[K9K]

ENGINE CONTROL SYSTEM

JRBWC6857GB

ENGINE CONTROL SYSTEM

ECK-115

< WIRING DIAGRAM >

[K9K]

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JRBWC6858GB

ECK-116

< WIRING DIAGRAM >

[K9K]

ENGINE CONTROL SYSTEM

JRBWC6859GB

ENGINE CONTROL SYSTEM

ECK-117

< WIRING DIAGRAM >

[K9K]

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JRBWC6860GB

ECK-118

< WIRING DIAGRAM >

[K9K]

ENGINE CONTROL SYSTEM

JRBWC6861GB

ENGINE CONTROL SYSTEM

ECK-119

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[K9K]

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JRBWC6862GB

ECK-120

< WIRING DIAGRAM >

[K9K]

ENGINE CONTROL SYSTEM

JRBWC6863GB

ENGINE CONTROL SYSTEM

ECK-121

< WIRING DIAGRAM >

[K9K]

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JRBWC6864GB

ECK-122

< WIRING DIAGRAM >

[K9K]

ENGINE CONTROL SYSTEM

JRBWC6865GB

ENGINE CONTROL SYSTEM

ECK-123

< WIRING DIAGRAM >

[K9K]

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JRBWC6866GB

ECK-124

< BASIC INSPECTION >

[K9K]

BASIC INSPECTION

BASIC INSPECTION

BASIC INSPECTION

Work Procedure

INFOID:0000000010289679

1.

INSPECTION START

1.

Check service records for any recent repairs that may indicate a related incident.

2.

Check the current need for scheduled maintenance, especially for fuel filter and air cleaner filter. Refer to

MA-29, "K9K : Periodic Maintenance"

.

3.

Open engine hood and check the following:

-

Harness connectors for improper connections

-

Vacuum hoses for splits, kinks, or improper connections

-

Wiring for improper connections, pinches, or cuts

4.

Start engine and warm it up to the normal operating tempera-
ture.

>> GO TO 2.

2.

CHECK IDLE SPEED

Check idle speed.
For procedure, refer to 

ECK-397, "Inspection"

.

For specification, refer to 

ECK-405, "Idle Speed"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 3.

3.

CHECK FOR INTAKE AIR LEAK

1.

Stop engine.

2.

Listen for an intake air leak after the mass air flow sensor.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace. Refer to 

EM-279, "Exploded View"

.

4.

BLEED AIR FROM FUEL SYSTEM

Use priming pump to bleed air from fuel system. Refer to 

FL-34, "Air Bleeding"

.

>> GO TO 5.

5.

CHECK IDLE SPEED AGAIN

Check idle speed.
For procedure, refer to 

ECK-397, "Inspection"

.

For specification, refer to 

ECK-405, "Idle Speed"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 6.

6.

DRAIN WATER FROM FUEL FILTER

1.

Stop engine.

2.

Drain water from fuel filter. Refer to 

FL-34, "Water Draining"

.

SEF142I

BASIC INSPECTION

ECK-125

< BASIC INSPECTION >

[K9K]

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>> GO TO 7.

7.

CHECK IDLE SPEED AGAIN

Check idle speed.
For procedure, refer to 

ECK-397, "Inspection"

.

For specification, refer to 

ECK-405, "Idle Speed"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 8.

8.

CHECK AIR CLEANER FILTER

1.

Stop engine.

2.

Check air cleaner filter for clogging or breaks.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Replace air cleaner filter. Refer to 

EM-279, "Removal and Installation"

.

9.

CHECK BATTERY VOLTAGE

Check battery voltage.

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> GO TO 10.

10.

CHECK BATTERY

Refer to 

PG-138, "FOR MAINTENANCE REQUIRED BATTERY MODELS : Work Procedure"

 (for mainte-

nance required battery models) or 

PG-143, "FOR MAINTENANCE FREE BATTERY MODELS : Work Flow"

(for maintenance free battery models).
Is the inspection result normal?

YES

>> Check charging system. Refer to 

CHG-15, "Work Flow"

.

NO

>> Repair or replace. Refer to 

PG-155, "Removal and Installation"

.

11.

CHECK COMPRESSION PRESSURE

Check compression pressure.

Is the inspection result normal?

YES

>> GO TO 12.

NO

>> Repair or replace error-detected parts.

12.

CHECK IDLE SPEED AGAIN

Check idle speed.
For procedure, refer to 

ECK-397, "Inspection"

.

For specification, refer to 

ECK-405, "Idle Speed"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> 1.

Replace fuel injector. Refer to 

EM-293, "Removal and Installation"

.

2.

Perform 

ECK-154, "Work Procedure (Fuel Injectors Leak Check)"

, 

ECK-155, "Work Proce-

dure (Fuel Injection Quantity Check)"

.

3.

GO TO 2.

Voltage:

More than 12 V

ECK-126

< BASIC INSPECTION >

[K9K]

DIAGNOSIS AND REPAIR WORKFLOW

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

INFOID:0000000010289680

OVERALL SEQUENCE

DETAILED FLOW

1.

GET INFORMATION FOR SYMPTOM

JMBIA1804GB

DIAGNOSIS AND REPAIR WORKFLOW

ECK-127

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Get the detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurred) using the “Diagnostic Work Sheet”. (Refer to 

ECK-128, "Diagnostic Work

Sheet"

.)

>> GO TO 2.

2.

CHECK DTC

1.

Check DTC.

2.

Perform the following procedure if DTC is displayed.

-

Record DTC. (Print them out with CONSULT or GST.)

-

Erase DTC.

-

Study the relationship between the cause detected by DTC and the symptom described by the customer.
[Symptom Table or diagnosis procedure is useful. Refer to 

ECK-388, "Symptom Table"

 (for engine control

system) or 

ECK-394, "Diagnosis Procedure"

 (for stop/start system).]

3.

Check related service bulletins for information.

Is any symptom described and is any DTC detected?

Symptom is described, DTC is detected>>GO TO 3.
Symptom is described, DTC is not detected>>GO TO 4.
Symptom is not described, DTC is detected>>GO TO 5.

3.

CONFIRM THE SYMPTOM

Try to confirm the symptom described by the customer (except MI ON).
Also study the fail safe related to the symptom. Refer to 

ECK-88, "Fail-safe"

 (for engine control system) or

ECK-394, "Diagnosis Procedure"

 (for stop/start system).

Diagnosis Work Sheet is useful to verify the incident.
Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 5.

4.

CONFIRM THE SYMPTOM

Try to confirm the symptom described by the customer.
Diagnosis Work Sheet is useful to verify the incident.
Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 6.

5.

PERFORM DTC CONFIRMATION PROCEDURE

Perform DTC CONFIRMATION PROCEDURE for the displayed DTC.
If two or more DTCs are detected, refer to 

ECK-95, "DTC Inspection Priority Chart"

 and determine trouble

diagnosis order.
NOTE:
Perform Component Function Check if DTC CONFIRMATION PROCEDURE is not included on Service Man-
ual. This simplified check procedure is an effective alternative though DTC cannot be detected during this
check.
If the result of Component Function Check is NG, it is the same as the detection of DTC by DTC CONFIRMA-
TION PROCEDURE.

Is DTC detected?

YES

>> GO TO 8.

NO

>> Check according to 

GI-41, "Intermittent Incident"

.

6.

PERFORM BASIC INSPECTION

Perform 

ECK-124, "Work Procedure"

.

>> GO TO 7.

7.

DETECT MALFUNCTIONING SYSTEM BY SYMPTOM TABLE

ECK-128

< BASIC INSPECTION >

[K9K]

DIAGNOSIS AND REPAIR WORKFLOW

Detect malfunctioning system according to 

ECK-388, "Symptom Table"

 (for engine control system) or 

ECK-

394, "Diagnosis Procedure"

 (for stop/start system) based on the confirmed symptom in step 4, and determine

the trouble diagnosis order based on possible causes and symptom.

>> GO TO 8.

8.

DETECT MALFUNCTIONING PART BY DIAGNOSIS PROCEDURE

Inspect according to Diagnosis Procedure of the system.
NOTE:
The Diagnosis Procedure in EC section described based on open circuit inspection. A short circuit inspection
is also required for the circuit check in the Diagnosis Procedure. For details, refer to 

GI-43, "Circuit Inspec-

tion"

.

Is malfunctioning part detected?

YES

>> GO TO 9.

NO

>> Monitor input data from related sensors or check voltage of related ECM terminals using CON-

SULT. Refer to 

ECK-76, "Reference Value"

.

9.

REPAIR OR REPLACE THE MALFUNCTIONING PART

1.

Repair or replace the malfunctioning part.

2.

Reconnect parts or connectors disconnected during Diagnosis Procedure again after repair and replace-
ment.

3.

Check DTC. If DTC is displayed, erase it. Refer to 

ECK-51, "Diagnosis Description"

.

>> GO TO 10.

10.

FINAL CHECK

When DTC was detected in step 2, perform DTC CONFIRMATION PROCEDURE or Component Function
Check again, and then make sure that the malfunction have been repaired securely.
When symptom was described from the customer, refer to confirmed symptom in step 3 or 4, and make sure
that the symptom is not detected.

Is DTC detected and does symptom remain?

YES-1 >> DTC is detected: GO TO 8.
YES-2 >> Symptom remains: GO TO 6.
NO

>> Before returning the vehicle to the customer, make sure to erase unnecessary DTC in ECM.

Diagnostic Work Sheet

INFOID:0000000010289681

DESCRIPTION

There are many operating conditions that lead to the malfunction of
engine components. A good grasp of such conditions can make trou-
bleshooting faster and more accurate.
In general, each customer feels differently about a incident. It is
important to fully understand the symptoms or conditions for a cus-
tomer complaint.
Utilize a diagnostic worksheet like the one on the next page in order
to organize all the information for troubleshooting.
Some conditions may cause the MI to come on steady and DTC to
be detected. Examples:
• Vehicle ran out of fuel, which caused the engine to misfire.
• Fuel filler cap was left off or incorrectly screwed on, allowing fuel to

evaporate into the atmosphere.

SEF907L

 

 

 

 

 

 

 

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