Nissan Qashqai J11. Manual - part 502

EC9-164

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

POWER SUPPLY AND GROUND CIRCUIT

NO

>> Repair or replace error-detected parts.

5.

CHECK ECM POWER SUPPLY (INGNITION POWER SUPPLY)

Check the voltage between IPDM E/R and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 6.

6.

CHECK IPDM E/R POWER SUPPLY AND GROUND

Check IPDM E/R power supply and ground. Refer to 

PCS-66, "Diagnosis Procedure"

. 

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-67, "Removal and Installation"

.

NO

>> Repair or replace error-detected parts.

7.

CHECK ECM GROUND CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between ECM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace error-detected parts.

8.

CHECK ECM POWER SUPPLY CIRCUIT

1.

Disconnect IPDM E/R harness connector.

2.

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

3.

Also check harness for short to ground.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair or replace error-detected parts.

9.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

Is the inspection result normal?

+

−

Voltage

IPDM E/R

Connector

Terminal

E38

19

Ground

Battery voltage

+

−

Continuity

ECM

Connector

Terminal

E58

25

Ground

Existed

29

32

+

−

Continuity

ECM

ECM relay

Connector

Terminal

Connector

Terminal

E58

16

E38

19

Existed

28

F90

105

F82

96

108

POWER SUPPLY AND GROUND CIRCUIT

EC9-165

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

YES

>> INSPECTION END

NO

>> Repair or replace error-detected parts.

EC9-166

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

U0111 LIN COMMUNICATION

U0111 LIN COMMUNICATION

DTC Logic

INFOID:0000000010499280

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 

EC9-166, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010828197

1.

CHECK LIN COMMUNICATION CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector and alternator harness connector.

3.

Disconnect active grille shutter harness connector and 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-15, "Work Flow"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace alternator. Refer to 

CHG-31, "R9M : Removal and Installation"

.

3.

CHECK DTC

1.

Erase DTC.

2.

Perform DTC confirmation procedure again. Refer to 

EC9-166, "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

U0111

LOST COMMUNICATION WITH BAT-
TERY 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 alter-
nator via LIN communication.

• Alternator
• Harness and connectors

+

−

Continuity

ECM

Alternator

Connector

Terminal

Connector

Terminal

F82

68

F54

2

Existed

U0121 CAN COMMUNICATION

EC9-167

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC9

N

P

O

U0121 CAN COMMUNICATION

DTC Logic

INFOID:0000000010309054

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

>>

EC9-167, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010309055

1.

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

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

BRC-42, "CONSULT Function"

.

Is DTC detected?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> Perform trouble shooting relevant to DTC indicated.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

U0121

MLTIPLXD TRACTION CN-
TRL CONN
[Lost communication with anti-
lock brake system (ABS) con-
trol Module]
• 1.DEF: INVALID SOURCE 

COMPUTER MULTIPLEX 
SIGNALS

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

ABS actuator and electric unit 
(control unit)