Nissan Qashqai J11. Manual - part 399

 

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Nissan Qashqai J11. Manual - part 399

 

 

ECK-156

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

POWER SUPPLY AND GROUND CIRCUIT

DTC/CIRCUIT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

ECM

ECM : Diagnosis Procedure

INFOID:0000000010289711

1.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check that the following fuse is not fusing.

Is the fuse fusing?

YES

>> Replace the fuse after repairing the applicable circuit.

NO

>> GO TO 2.

2.

CHECK GROUND CONNECTION

Check ground connection E5. Refer to Ground Inspection in 

GI-43, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace ground connection.

3.

CHECK ECM GROUND CIRCUIT FOR OPEN

1.

Disconnect ECM harness connector.

2.

Check the continuity between ECM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK ECM RELAY CONTROL SIGNAL

1.

Reconnect ECM harness connector.

2.

Check the voltage between ECM harness connector and ground as per the following condition.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

Fuse No.

Capacity

#52

10 A

#65

5 A

+

Continuity

ECM

Connector

Terminal

E59

25

Ground

Existed

26

29

32

+

Condition

Voltage

ECM

Connector

Terminal

F80

36

Ground

Ignition switch: OFF

0 V

Ignition switch: ON

Battery voltage

POWER SUPPLY AND GROUND CIRCUIT

ECK-157

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

ECK

N

P

O

5.

CHECK ECM RELAY CONTROL SIGNAL CIRCUIT

1.

Turn ignition OFF.

2.

Disconnect ECM harness connector.

3.

Disconnect IPDM E/R harness connector.

4.

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

5.

Also check harness for short to ground and to power.

Is the inspection result normal?

YES

>> Replace IPDM E/R.

NO

>> Repair or replace error-detected parts.

6.

CHECK ECM BATTERY POWER SUPPLY

1.

Turn ignition switch ON.

2.

Check the voltage between ECM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 7.

7.

CHECK ECM BATTERY POWER SUPPLY CIRCUIT

1.

Turn ignition OFF.

2.

Disconnect ECM harness connector.

3.

Disconnect IPDM E/R harness connector.

4.

Check the continuity between ECM harness connector and IPDM E/R harness connector.

5.

Also check harness for short to ground and to power.

Is the inspection result normal?

YES

>> Replace IPDM E/R.

NO

>> Repair or replace error-detected parts.

8.

CHECK ECM IGNITION POWER SUPPLY

1.

Turn ignition ON.

2.

Check the voltage between ECM harness connector and ground.

+

Continuity

ECM

IPDM E/R

Connector

Terminal

Connector

Terminal

F80

36

F89

77

Existed

+

Voltage

ECM

Connector

Terminal

F80

93

Ground

Battery voltage

94

+

Continuity

ECM

IPDM E/R

Connector

Terminal

Connector

Terminal

F80

93

F90

103

Existed

94

96

ECK-158

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

POWER SUPPLY AND GROUND CIRCUIT

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> Perform trouble diagnosis for ignition power supply circuit.

+

Voltage

ECM

Connector

Terminal

E59

16

Ground

Battery voltage

U0019 LIN BUS OFF ERROR

ECK-159

< DTC/CIRCUIT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

ECK

N

P

O

U0019 LIN BUS OFF ERROR

DTC Logic

INFOID:0000000010434146

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 3 seconds.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

ECK-159, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010434147

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 ALTERNATOR

1.

Replace alternator.

2.

Erase DTC.

3.

Perform DTC confirmation procedure again. Refer to 

ECK-159, "DTC Logic"

.

Is DTC detected again?

YES

>> Replace ECM.

NO

>> INSPECTION END

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

U0019


(Low speed can communication bus)

ECM detects LIN communication er-
ror.

• Harness or connectors

(LIN communication circuit is 
open or shorted.)

• Generator
• ECM

+

Continuity

ECM

Alternator

Connector

Terminal

Connector

Terminal

F81

141

F54

2

Existed

 

 

 

 

 

 

 

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