Nissan Maxima. Manual - part 251

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

BRC-25

< SYSTEM DESCRIPTION >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

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

ABS MOTOR

• Touch “On” and “Off” on screen. Make sure motor relay, actuator relay, V/R output and M/R output operate

as shown in table below.

WORK SUPPORT

RR LH ABS SOLENOID (ACT)

RR LH IN SOL

—

—

—

Off

Off

Off

RR LH OUT SOL

—

—

—

Off

Off

Off

USV[FL-RR]

—

—

—

Off

Off

Off

USV[FR-RL]

—

—

—

Off

On

On

HSV[FL-RR]

—

—

—

Off

Off

Off

HSV[FR-RL]

—

—

—

Off

On*

Off

Operation

ABS solenoid valve

ABS solenoid valve (ACT)

Up

Keep

Down

Up

ACT UP

ACT KEEP

Operation

On

Off

MOTOR RELAY

On

Off

ACTUATOR RLY

On

On

V/R OUTPUT

On

On

M/R OUTPUT

On

Off

Conditions

Description

ST ANGLE SENSOR ADJUSTMENT

Steering angle sensor neutral position adjustment can be per-
formed. Refer to 

BRC-6, "ADJUSTMENT OF STEERING ANGLE 

SENSOR NEUTRAL POSITION : Special Repair Requirement"

.

BRC-26

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C1101, C1102, C1103, C1104 WHEEL SENSOR

DTC/CIRCUIT DIAGNOSIS

C1101, C1102, C1103, C1104 WHEEL SENSOR

DTC Logic

INFOID:0000000010062762

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF DIAGNOSTIC RESULT

 With 

CONSULT.

1. Start engine and drive vehicle at approximately 21 km/h (13 MPH) or more for approximately 5 minutes.

2. Perform self diagnostic result.
Is DTC C1101, C1102, C1103 or C1104 detected?

YES

>> Proceed to diagnosis procedure. Refer to 

BRC-26, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010062763

Regarding Wiring Diagram information, refer to 

BRC-83, "Wiring Diagram"

.

CAUTION:

Do not check between wheel sensor terminals.

1.

CONFIRM DTC

 With CONSULT

1. Perform self-diagnostic result of ABS and record all active DTCs.

2. Clear all DTCs.

3. Perform DTC confirmation procedure. Refer to 

BRC-26, "DTC Logic"

.

Does DTC C1101, C1102, C1103 or C1104 reset?

YES

>> GO TO 2.

NO

>> Refer to 

GI-41, "Intermittent Incident"

.

2.

INSPECT WHEEL SENSOR

Inspect the suspect wheel sensor for damage or deformation.
Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace as necessary.

DTC

Display Item

Malfunction detected condition

Possible causes

C1101

RR RH SENSOR-1

• When power supply voltage of rear wheel sensor 

RH is low.

• When an open or shorted circuit is detected in rear 

wheel sensor RH circuit.

• Harness or connector
• Wheel sensor
• ABS actuator and electric unit 

(control unit)

C1102

RR LH SENSOR-1

• When power supply voltage of rear wheel sensor 

LH is low.

• When an open or shorted circuit is detected in rear 

wheel sensor LH circuit.

C1103

FR RH SENSOR-1

• When power supply voltage of front wheel sensor 

RH is low.

• When an open or shorted circuit is detected in front 

wheel sensor RH circuit.

C1104

FR LH SENSOR-1

• When power supply voltage of front wheel sensor 

LH is low.

• When an open or shorted circuit is detected in front 

wheel sensor LH circuit.

C1101, C1102, C1103, C1104 WHEEL SENSOR

BRC-27

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

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3.

HARNESS AND CONNECTOR INSPECTION

1. Disconnect ABS actuator and electric unit (control unit) connector E26 and wheel sensor connector of

suspect wheel.

2. Check harness, connectors and terminals for corrosion, deformation, disconnection, looseness or dam-

age.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace as necessary.

4.

CHECK WHEEL SENSOR OUTPUT SIGNAL

1. Connect ABS active wheel sensor tester (J-45741) to wheel sensor using appropriate adapter.

2. Turn on the ABS active wheel sensor tester power switch.

NOTE:

The green POWER indicator should illuminate. If the POWER indicator does not illuminate, replace the

battery in the ABS active wheel sensor tester before proceeding.

3. Spin the wheel of the vehicle by hand and observe the red SENSOR indicator on the ABS active wheel

sensor tester. The red SENSOR indicator should flash on and off to indicate an output signal.

NOTE:

If the red SENSOR indicator illuminates but does not flash, reverse the polarity of the tester leads and

retest.

Does the ABS active wheel sensor tester detect a signal?

YES

>> GO TO 5.

NO

>> Replace the wheel sensor. Refer to 

BRC-102, "Removal and Installation - Front Wheel Sensor"

 or

BRC-103, "Removal and Installation - Rear Wheel Sensor"

.

5.

CHECK WIRING HARNESS FOR SHORT TO VOLTAGE

1. Turn ignition switch ON.

2. Check voltage between wheel sensor harness connector terminals of suspect wheel and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair the circuit.

6.

CHECK WIRING HARNESS FOR SHORT TO GROUND

1. Turn ignition switch OFF.

2. Check continuity between wheel sensor harness connector terminals of suspect wheel and ground.

Wheel Sensor

Ground

Voltage

Wheel

Connector

Terminal

Front LH

E19

1

—

0V

2

Front RH

E41

1

2

Rear LH

C1

1

2

Rear RH

C2

1

2

Wheel Sensor

Ground

Continuity

Wheel

Connector

Terminal

BRC-28

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C1101, C1102, C1103, C1104 WHEEL SENSOR

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair the circuit.

7.

CHECK WIRING HARNESS FOR SHORT BETWEEN CIRCUITS

Check continuity between wheel sensor harness connector terminals of suspect wheel.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair the circuit.

8.

CHECK WIRING HARNESS FOR OPEN CIRCUIT

Check continuity between ABS actuator and electric unit (control unit) connector E26 and wheel sensor con-

nector of wheel with DTC.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair the circuit.

9.

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

1. Turn ignition switch ON.

2. Check voltage between ABS actuator and electric unit (control unit) harness connector E26 terminal and

ground.

Front LH

E19

1

—

No

2

Front RH

E41

1

2

Rear LH

C1

1

2

Rear RH

C2

1

2

Wheel Sensor

(+)

(-)

Continuity

Wheel

Connector

Terminal

Terminal

Front LH

E19

1

2

No

Front RH

E41

Rear LH

C1

Rear RH

C2

Wheel sensor

ABS actuator and electric unit (control unit)

Wheel sensor

Continuity

Connector

Terminal

Connector

Terminal

Yes

Front LH

E26

5

E19

2

16

1

Front RH

10

E41

2

9

1

Rear LH

17

C1

2

6

1

Rear RH

19

C2

2

8

1