Nissan Teana J32. Manual - part 245

BRC-38

< COMPONENT DIAGNOSIS >

[ABS]

U1000, U1002 CAN COMM CIRCUIT

U1000, U1002 CAN COMM CIRCUIT

Description

INFOID:0000000003766819

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.

DTC Logic

INFOID:0000000003766820

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

1.

Turn the ignition switch ON.

2.

Perform ABS actuator and electric unit (control unit) self-diagnosis.

Is DTC “U1000” or “U1002” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

BRC-38, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003766821

1.

PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

Perform ABS actuator and electric unit (control unit) self-diagnosis.

Is DTC “U1000” or “U1002” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

LAN-14, "Trouble Diagnosis Flow Chart"

.

NO

>> INSPECTION END

DTC

Display item

Malfunction detected condition

Possible cause

U1000

CAN COMM CIRCUIT

When ABS actuator and electric unit (control unit) is not 
transmitting or receiving CAN communication signal for 2 
seconds or more.

• CAN communication line
• ABS actuator and electric unit 

(control unit)

U1002

SYSTEM COMM (CAN)

When ABS actuator and electric unit (control unit) is not 
transmitting or receiving CAN communication signal for 2 
seconds or less.

POWER SUPPLY AND GROUND CIRCUIT

BRC-39

< COMPONENT DIAGNOSIS >

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

POWER SUPPLY AND GROUND CIRCUIT

Description

INFOID:0000000003766827

Supplies power to ABS actuator and electric unit (control unit).

Diagnosis Procedure

INFOID:0000000003766828

1.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) IGNITION POWER SUPPLY

1.

Turn the ignition switch OFF.

2.

Disconnect ABS actuator and electric unit (control unit) harness connector.

3.

Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.

4.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

5.

Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Perform the trouble diagnosis for power supply circuit.

2.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY

1.

Turn the ignition switch OFF.

2.

Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Perform the trouble diagnosis for power supply circuit.

3.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND

Check the continuity between ABS actuator and electric unit (control unit) harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace damaged parts.

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E34

18

Ground

Approx. 0 V

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E34

18

Ground

Battery voltage

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E34

3

Ground

Battery voltage

ABS actuator and electric unit (control unit)

—

Continuity

Connector

Terminal

E34

1

Ground

Existed

4

BRC-40

< COMPONENT DIAGNOSIS >

[ABS]

ABS WARNING LAMP

ABS WARNING LAMP

Description

INFOID:0000000003766836

×

: ON –: OFF

Component Function Check

INFOID:0000000003766837

1.

CHECK ABS WARNING LAMP OPERATION

Check that the lamp illuminates for approximately 1 second after the ignition switch is turned ON.
Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to diagnosis procedure. Refer to 

BRC-40, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000003766838

1.

CHECK SELF-DIAGNOSIS

Perform ABS actuator and electric unit (control unit) self-diagnosis.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Check items displayed by self-diagnosis.

2.

CHECK COMBINATION METER

Check if the indication and operation of combination meter are normal. Refer to 

MWI-32, "Diagnosis Descrip-

tion"

.

Is the inspection result normal?

YES

>> Replace ABS actuator and electric unit (control unit).

NO

>> Repair or replace combination meter.

Condition

ABS warning lamp

Ignition switch OFF

–

For 1 second after turning ignition switch ON

×

1 second later after turning ignition switch ON

–

ABS function is malfunctioning.

×

EBD function is malfunctioning.

×

BRAKE WARNING LAMP

BRC-41

< COMPONENT DIAGNOSIS >

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

BRAKE WARNING LAMP

Description

INFOID:0000000003766839

×

: ON –: OFF

NOTE:

• 1: Brake warning lamp will turn on in case of parking brake operation (when switch is ON) or of brake fluid level switch operation

(when brake fluid is insufficient).

• 2: After starting the engine, brake warning lamp is turned off.

Component Function Check

INFOID:0000000003766840

1.

BRAKE WARNING LAMP OPERATION CHECK 1

Check that the lamp illuminates for approximately 1 second after the ignition switch is turned ON.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Proceed to diagnosis procedure. Refer to 

BRC-41, "Diagnosis Procedure"

.

2.

BRAKE WARNING LAMP OPERATION CHECK 2

Check that the brake warning lamp in the combination meter turns ON/OFF correctly when operating the park-
ing brake pedal.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Check parking brake switch.

Diagnosis Procedure

INFOID:0000000003766841

1.

CHECK PARKING BRAKE SWITCH

Check that the brake warning lamp in the combination meter turns ON/OFF correctly when operating the park-
ing brake pedal.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Check parking brake switch.

2.

CHECK SELF-DIAGNOSIS

Perform ABS actuator and electric unit (control unit) self-diagnosis.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Check items displayed by self-diagnosis.

3.

CHECK COMBINATION METER

Check if the indication and operation of combination meter are normal. Refer to 

MWI-32, "Diagnosis Descrip-

tion"

.

Is the inspection result normal?

YES

>> Replace ABS actuator and electric unit (control unit).

NO

>> Repair or replace combination meter.

Condition

Brake warning lamp (Note 1)

Ignition switch OFF

–

For 1 second after turning ignition switch ON

×

 (Note 2)

1 second later after turning ignition switch ON

×

 (Note 2)

EBD function is malfunctioning.

×