Nissan Qashqai J11. Manual - part 294

U1044 ENG COMM CIRCUIT

ECM-153

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

C

D

E

F

G

H

I

J

K

L

M

A

ECM

N

P

O

Is DTC detected again?

YES

>> Replace ECM. Refer to 

ECM-416, "Removal and Installation"

.

NO

>> INSPECTION END

ECM-154

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

U1050, U1051 LIN COMMUNICATION

U1050, U1051 LIN COMMUNICATION

DTC Description

INFOID:0000000010702883

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors

(LIN communication circuit is open or shorted.)

• Generator
• ECM

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted. always perform the following procedure
before conducting the next test.
1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition ON and wait at least 10 seconds.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

ECM-154, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010702884

1.

CHECK LIN COMMUNICATION CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector and alternator harness connector.

3.

Check the continuity between ECM harness connector and alternator harness connector.

4.

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

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

REPLACE GENERATOR

1.

Replace alternator. Refer to 

CHG-52, "MR20DD : Removal and Installation"

.

2.

Erase DTC.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

U1050

LIN COMMUNICATION

ECM detects LIN communication error.

U1051

+

−

Continuity

ECM

Alternator

Connector

Terminal

Connector

Terminal

F15

45

F54

2

Existed

U1050, U1051 LIN COMMUNICATION

ECM-155

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

C

D

E

F

G

H

I

J

K

L

M

A

ECM

N

P

O

3.

Perform DTC confirmation procedure again. Refer to 

ECM-154, "DTC Description"

.

Is DTC detected again?

YES

>> Replace ECM. Refer to 

ECM-416, "Removal and Installation"

.

NO

>> INSPECTION END

ECM-156

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

P0011 IVT CONTROL

P0011 IVT CONTROL

DTC Description

INFOID:0000000010702885

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Crankshaft position sensor
• Camshaft position sensor
• Intake valve timing control solenoid valve
• Accumulation of debris to the signal plate of the camshaft
• Timing chain installation
• Foreign matter caught in the oil groove for intake valve timing control

FAIL-SAFE

DTC CONFIRMATION PROCEDURE

1.

CHECK DTC PRIORITY

If DTC P0011 is displayed with DTC P0075, first perform the trouble diagnosis for DTC P0075.

Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. Refer to 

ECM-170, "DTC Description"

.

NO

>> GO TO 2.

2.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is between 11 V and 16 V at
idle.

>> GO TO 3.

3.

PERFORM DTC CONFIRMATION PROCEDURE-1

With CONSULT

1.

Turn ignition switch ON and select “DATA MONITOR” mode of “ENGINE” using CONSULT.

2.

Start engine and warm it up to normal operating temperature.

3.

Maintain the following conditions for at least 10 consecutive seconds. Hold the accelerator pedal as
steady as possible.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P0011

INT/V TIM CONT-B1
“A” Camshaft position - timing over-ad-
vanced or system performance bank 1)

There is a gap between angle of target and phase-control angle degree.

Engine operating condition in fail-safe mode

Fail safe mode

Vehicle behavior

Device fix mode

• This mode fixes the IVT control solenoid valve and the EVT control solenoid valve in the refer-

ence position.

• The intake manifold runner control valve motor is turned OFF (intake manifold runner valve 

opens).

ENG SPEED

1,200 - 2,000 rpm