Nissan Qashqai (2007-2010). Manual - part 1902

MWI-26

< COMPONENT DIAGNOSIS >

U1000 CAN COMM CIRCUIT

COMPONENT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000000892293

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
Refer to 

LAN-59, "CAN Communication Signal Chart"

.

DTC Logic

INFOID:0000000000892294

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000000892295

1.

PERFORM SELF DIAGNOSTIC

1.

Turn ignition switch ON and wait for 2 seconds or more.

2.

Check “Self Diagnostic Result” of “METER/M&A”.

Is “CAN COMM CIRCUIT” displayed?

YES

>> Refer to 

LAN-46, "Trouble Diagnosis Flow Chart"

.

NO

>> Refer to 

GI-39, "Intermittent Incident"

.

DTC

Display contents of 

CONSULT-III

Diagnostic item is detected when ...

Probable malfunction location

U1000

CAN COMM CIRCUIT

When combination meter is not transmitting or 
receiving CAN communication signal for 2 sec-
onds or more.

CAN communication system

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B2205 VEHICLE SPEED

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< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

B2205 VEHICLE SPEED

Description

INFOID:0000000000892306

Vehicle speed signal is transmitted from ABS actuator and electric unit (control unit) via CAN communication
line to combination meter.

DTC Logic

INFOID:0000000000892307

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000000892308

1.

PERFORM SELF DIAGNOSIS OF ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

Perform “Self Diagnosis Result” of ABS actuator and electric unit (control unit), and repair or replace malfunc-
tioning parts.

>> Refer to 

BRC-17, "CONSULT-III Function (ABS)"

.

DTC

Display contents of 

CONSULT-III

Diagnostic item is detected when ...

Probable malfunction location

B2205

VEHICLE SPEED

The abnormal vehicle speed signal is input 
from ABS actuator and electric unit (control 
unit) for 2 seconds or more.

ABS actuator and electric unit (control unit)

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< COMPONENT DIAGNOSIS >

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

COMBINATION METER

COMBINATION METER : Diagnosis Procedure

INFOID:0000000000892315

1.

CHECK FUSE

Check for blown fuses.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Be sure to eliminate cause of malfunction before installing new fuse.

2.

CHECK POWER SUPPLY CIRCUIT

Check voltage between combination meter harness connector terminals 1, 2 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Check harness between combination meter and fuse.

3.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect combination meter connector.

3.

Check continuity between combination meter harness connector terminals 3, 23 and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) : Di-
agnosis Procedure

INFOID:0000000001098977

1.

CHECK FUSIBLE LINK

Check that the following IPDM E/R fusible link is not blown.

Is the fusible link fusing?

YES

>> Replace the blown fusible link after repairing the affected circuit if a fusible link is blown.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R connector.

Battery power supply

: 8

Ignition signal

: 4

Terminal No.

Signal name

Ignition switch position

Value (Approx.)

1

Battery power supply

OFF

Battery voltage

2

Ignition signal

ON

Battery voltage

3, 23 – Ground

: Continuity should exist.

Terminal No.

Signal name

Fusible link No.

1

Battery power supply

E

2

C

53

L (except HR engine models)

M (HR engine models)

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POWER SUPPLY AND GROUND CIRCUIT

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< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

3.

Check voltage between IPDM E/R harness connector and ground.

Is the measurement value normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK GROUND CIRCUIT

1.

Disconnect IPDM E/R connectors.

2.

Check continuity between IPDM E/R harness connectors and ground.

Does continuity exist?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

Terminals

Voltage

(Approx.)

(+)

(

−

)

IPDM E/R

Connector

Terminal

Ground

E9

1

Battery voltage

2

E14

53

IPDM E/R

Ground

Continuity

Connector

Terminal

E10

5

Exist

6