Nissan X-Trail 32. Manual - part 959

POWER SUPPLY AND GROUND CIRCUIT

EC-965

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

YES

>> INSPECTION END

NO

>> Repair or replace error-detected parts.

EC-966

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

U0111 LIN COMMUNICATION

U0111 LIN COMMUNICATION

DTC Description

INFOID:0000000010935624

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Alternator
• Harness and connectors

FAIL-SAFE

Not applicable

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 

EC-966, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010935625

1.

CHECK LIN COMMUNICATION CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector and alternator harness connector.

3.

Disconnect DC/DC conveter harness connector.

4.

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

5.

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.

CHECK ALTERNATOR

Check alternator. Refer to 

CHG-14, "Work Flow"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace alternator. Refer to 

CHG-26, "R9M : Removal and Installation"

.

3.

CHECK DTC

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

U0111

LOST COMMUNICATION WITH BATTERY 
ENERGY FROM LIN
(Lost communication with battery energy 
control module “A”)
• 1.DEF: NO BUS SIGNAL
• 2.DEF: COMPONENT PROTECTION 

TIME-OUT

ECM cannot communication with alternator via LIN communication.

+

−

Continuity

ECM

Alternator

Connector

Terminal

Connector

Terminal

F117

68

F15

2

Existed

U0111 LIN COMMUNICATION

EC-967

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

1.

Erase DTC.

2.

Perform DTC confirmation procedure again. Refer to 

EC-966, "DTC Description"

.

Is DTC detected again?

YES

>> Replace ECM.

NO

>> INSPECTION END

EC-968

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

U0121 CAN COMMUNICATION

U0121 CAN COMMUNICATION

DTC Description

INFOID:0000000010935626

DTC DETECTION LOGIC

POSSIBLE CAUSE

ABS actuator and electric unit (control unit)

FAIL-SAFE

ESP is deactivated

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 

EC-968, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010935627

1.

CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

Check DTC with ABS actuator and electric unit (control unit). Refer to 

BRC-70, "CONSULT Function"

.

Is DTC detected?

YES

>> INSPECTION END

NO

>> Perform trouble shooting relevant to DTC indicated.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

U0121

MLTIPLXD TRACTION CNTRL CONN
[Lost communication with anti-lock brake 
system (ABS) control Module]
• 1.DEF: INVALID SOURCE COMPUTER 

MULTIPLEX SIGNALS

When ECM is not transmitting or receiving CAN communication signal be-
tween ABS actuator and electric unit (control unit).