Nissan Frontier D40. Manual - part 86

BRC-42

< COMPONENT DIAGNOSIS >

[TYPE 1]

C1121, C1123, C1191 OUT ABS SOL

1.

Turn ignition switch OFF.

2.

Disconnect ABS actuator and electric unit (control unit) connec-
tor.

3.

Check voltage between ABS actuator and electric unit (control
unit) connector E125 terminal 32 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace malfunctioning components.

3.

CHECK SOLENOID AND ACTUATOR RELAY GROUND CIRCUIT

Check continuity between ABS actuator and electric unit (control
unit) connector E125 terminals 16, 47 and ground.

Is the inspection result normal?

YES

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

Refer to 

BRC-71, "Removal and Installation"

.

NO

>> Repair or replace malfunctioning components.

Component Inspection

INFOID:0000000005549006

1.

CHECK ACTIVE TEST

1.

Select each test menu item on “ACTIVE TEST”.

2.

On the display, touch “Up”, “Keep”, and “Down”, and check that the system operates as shown in the table
below.

*: On for 1 to 2 seconds after the touch, and then Off

Is the inspection result normal?

YES

>> Inspection End

NO

>> Go to diagnosis procedure. Refer to 

BRC-41, "Diagnosis Procedure"

.

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E125

32

Ground

Battery voltage

AWFIA0018ZZ

ABS actuator and electric unit (control unit)

—

Continuity

Connector

Terminal

E125

16, 47

Ground

Yes

AWFIA0016ZZ

Operation

ABS solenoid valve

Up

Keep

Down

FR RH SOL

FR RH IN SOL

Off

On

On

FR RH OUT SOL

Off

Off

On*

FR LH SOL

FR LH IN SOL

Off

On

On

FR LH OUT SOL

Off

Off

On*

REAR SOL

RR RH IN SOL

Off

On

On

RR RH OUT SOL

Off

Off

On*

RR LH IN SOL

Off

On

On

RR LH OUT SOL

Off

Off

On*

C1140 ACTUATOR RLY

BRC-43

< COMPONENT DIAGNOSIS >

[TYPE 1]

C

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BRC

N

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C1140 ACTUATOR RLY

Description

INFOID:0000000005275078

Activates or deactivates each solenoid valve according to the signals transmitted by the ABS actuator and
electric unit (control unit). 

DTC Logic

INFOID:0000000005275079

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAGNOSIS RESULTS

Check the self-diagnosis results.

Is above displayed on the self-diagnosis display?

YES

>> Proceed to diagnosis procedure. Refer to 

BRC-43, "Diagnosis Procedure"

.

NO

>> Inspection End

Diagnosis Procedure

INFOID:0000000005549007

Regarding Wiring Diagram information, refer to 

BRC-51, "Wiring Diagram - BRAKE CONTROL SYSTEM -

ABS"

.

1.

CONNECTOR INSPECTION

1.

Turn ignition switch OFF.

2.

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

3.

Check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair
or replace terminals.

4.

Reconnect connectors and then perform the self-diagnosis. Refer to 

BRC-21, "CONSULT-III Function

(ABS)"

.

Is any item indicated on the self-diagnosis display?

YES

>> GO TO 2

NO

>> Poor connection of connector terminals. Repair or replace connector.

2.

CHECK SOLENOID AND ACTUATOR RELAY POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ABS actuator and electric unit (control unit) connec-
tor.

3.

Check voltage between ABS actuator and electric unit (control
unit) connector E125 terminal 32 and ground.

Is the inspection result normal?

DTC

Display item

Malfunction detected condition

Possible cause

C1140

ACTUATOR RLY

ABS actuator relay or circuit malfunction.

• Harness or connector
• ABS actuator and electric unit 

(control unit)

Self-diagnosis results

ACTUATOR RLY

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E125

32

Ground

Battery voltage

AWFIA0018ZZ

BRC-44

< COMPONENT DIAGNOSIS >

[TYPE 1]

C1140 ACTUATOR RLY

YES

>> GO TO 3

NO

>> Repair or replace malfunctioning components.

3.

CHECK SOLENOID AND ACTUATOR RELAY GROUND CIRCUIT

Check continuity between ABS actuator and electric unit (control
unit) connector E125 terminals 16, 47 and ground.

Is the inspection result normal?

YES

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

Refer to 

BRC-71, "Removal and Installation"

.

NO

>> Repair or replace malfunctioning components.

Component Inspection

INFOID:0000000005549008

1.

CHECK ACTIVE TEST

1.

On “ACTIVE TEST”, select “ABS MOTOR”.

2.

Touch On and Off on screen. Make sure motor relay and actuator relay operate as shown in table below.

Is the inspection result normal?

YES

>> Inspection End

NO

>> Go to diagnosis procedure. Refer to 

BRC-43, "Diagnosis Procedure"

.

ABS actuator and electric unit (control unit)

—

Continuity

Connector

Terminal

E125

16, 47

Ground

Yes

AWFIA0016ZZ

Operation

On

Off

MOTOR RELAY

On

Off

ACTUATOR RLY

On

On

U1000 CAN COMM CIRCUIT

BRC-45

< COMPONENT DIAGNOSIS >

[TYPE 1]

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U1000 CAN COMM CIRCUIT

Description

INFOID:0000000005275082

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:0000000005275083

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000005275084

1.

CHECK CONNECTOR

1.

Turn ignition switch OFF.

2.

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

3.

Check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair
or replace terminals.

4.

Reconnect connector and perform self-diagnosis. Refer to 

BRC-21, "CONSULT-III Function (ABS)"

.

Is “CAN COMM CIRCUIT” displayed in self-diagnosis display items?

YES

>> Print out the self-diagnostic results, and refer to 

LAN-14, "Trouble Diagnosis Flow Chart"

.

NO

>> Connector terminal is loose, damaged, open, or shorted.

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)