Nissan Maxima. Manual - part 256

C1120, C1122, C1124, C1126 IN ABS SOL

BRC-45

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

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BRC

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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 E26 terminal 3 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 E26 terminals 1, 4 and ground.

Is the inspection result normal?

YES

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

Refer to 

BRC-106, "Removal and Installation"

.

NO

>> Repair or replace malfunctioning components.

Component Inspection

INFOID:0000000010049077

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.

ABS actuator and electric unit (control 

unit)

Ground

Voltage

(Approx.)

Connector

Terminal

E26

3

—

Battery voltage

WFIA0499E

ABS actuator and electric unit (control 

unit)

Ground

Continuity

Connector

Terminal

E26

1

—

Yes

4

ALFIA0007ZZ

Operation

ABS solenoid valve

Up

Keep

Down

FR RH SOL

FR RH IN SOL

Off

On

On

FR RH OUT SOL

Off

Off

On*

USV[FL-RR]

Off

Off

On*

USV[FR-RL]

Off

Off

On*

HSV[FL-RR]

Off

Off

On*

HSV[FR-RL]

Off

Off

On*

FR LH SOL

FR LH IN SOL

Off

On

On

FR LH OUT SOL

Off

Off

On*

USV[FL-RR]

Off

Off

On*

USV[FR-RL]

Off

Off

On*

HSV[FL-RR]

Off

Off

On*

HSV[FR-RL]

Off

Off

On*

BRC-46

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C1120, C1122, C1124, C1126 IN ABS SOL

*: 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-44, "Diagnosis Procedure"

.

Special Repair Requirement

INFOID:0000000010049078

1.

ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-

tor and electric unit (control unit). Refer to 

BRC-6, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-

TRAL POSITION : Special Repair Requirement"

.

>> END

RR RH SOL

RR RH IN SOL

Off

On

On

RR RH OUT SOL

Off

Off

On*

USV[FL-RR]

Off

Off

On*

USV[FR-RL]

Off

Off

On*

HSV[FL-RR]

Off

Off

On*

HSV[FR-RL]

Off

Off

On*

RR LH SOL

RR LH IN SOL

Off

On

On

RR LH OUT SOL

Off

Off

On*

USV[FL-RR]

Off

Off

On*

USV[FR-RL]

Off

Off

On*

HSV[FL-RR]

Off

Off

On*

HSV[FR-RL]

Off

Off

On*

Operation

ABS solenoid valve

Up

Keep

Down

C1121, C1123, C1125, C1127 OUT ABS SOL

BRC-47

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

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C1121, C1123, C1125, C1127 OUT ABS SOL

Description

INFOID:0000000010049079

The solenoid valve increases, holds or decreases the fluid pressure of each brake caliper according to the sig-

nals transmitted by the ABS actuator and electric unit (control unit). 

DTC Logic

INFOID:0000000010049080

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-47, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010049081

Regarding Wiring Diagram information, refer to 

BRC-83, "Wiring Diagram"

.

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 connector and perform self-diagnosis. Refer to 

BRC-21, "CONSULT 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

DTC

Display item

Malfunction detected condition

Possible cause

C1121

FR LH OUT ABS SOL

When the control unit detects a malfunction in the front 
LH outlet solenoid circuit.

• ABS actuator and electric unit 

(control unit)

C1123

FR RH OUT ABS SOL

When the control unit detects a malfunction in the front 
RH outlet solenoid circuit.

C1125

RR LH OUT ABS SOL

When the control unit detects a malfunction in the rear LH 
outlet solenoid circuit.

C1127

RR RH OUT ABS SOL

When the control unit detects a malfunction in the rear 
RH outlet solenoid circuit.

Self-diagnosis results

FR LH OUT ABS SOL

FR RH OUT ABS SOL

RR LH OUT ABS SOL

RR RH OUT ABS SOL

BRC-48

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C1121, C1123, C1125, C1127 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 E26 terminal 3 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 E26 terminals 1, 4 and ground.

Is the inspection result normal?

YES

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

Refer to 

BRC-106, "Removal and Installation"

.

NO

>> Repair or replace malfunctioning components.

Component Inspection

INFOID:0000000010049082

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.

ABS actuator and electric unit (control 

unit)

Ground

Voltage

(Approx.)

Connector

Terminal

E26

3

—

Battery voltage

WFIA0499E

ABS actuator and electric unit (control 

unit)

Ground

Continuity

Connector

Terminal

E26

1

—

Yes

4

ALFIA0007ZZ

Operation

ABS solenoid valve

Up

Keep

Down

FR RH SOL

FR RH IN SOL

Off

On

On

FR RH OUT SOL

Off

Off

On*

USV[FL-RR]

Off

Off

On*

USV[FR-RL]

Off

Off

On*

HSV[FL-RR]

Off

Off

On*

HSV[FR-RL]

Off

Off

On*

FR LH SOL

FR LH IN SOL

Off

On

On

FR LH OUT SOL

Off

Off

On*

USV[FL-RR]

Off

Off

On*

USV[FR-RL]

Off

Off

On*

HSV[FL-RR]

Off

Off

On*

HSV[FR-RL]

Off

Off

On*