Nissan Frontier D22. Manual - part 198

TROUBLE DIAGNOSIS

BRC-123

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

5. 

CHECKING WHEEL SENSORS

Inspect wheel sensor system.

●

Sensor mounting inspection

●

Check sensor pick-up for adhering iron chips.

●

Sensor rotor inspection (e.g. Number of teeth, damaged teeth)

●

Sensor connector engagement inspection

Is inspection result OK?

OK

>> Normal.

NG

>> Repair wheel sensor and rotor system.

Symptom 3 Long Stopping Distance

EFS003J1

Inspection Procedure

1. 

STARTING INSPECTION

Check that stopping distance increases only on snowy roads and gravel roads.
Is inspection result OK?

OK

>> May be longer than for vehicles without ABS.

NG

>> GO TO 2.

2. 

CHECKING PERFORMANCE

Disconnect ABS actuator and electric unit (control unit) to deactivate ABS function.

Is stopping distance still long?

YES

>> Inspect brake lines for leaks or damage. Repair as necessary. Bleed brakes. Refer to 

BR-10,

"Bleeding Brake System"

 .

NO

>> GO TO 3.

3. 

CHECKING ABS WARNING LAMP INDICATION

Check that ABS warning lamp illuminates.

Is inspection result OK?

OK

>> Perform self-diagnosis.

NG

>> GO TO 4.

4. 

CHECKING WHEEL SENSORS

Inspect wheel sensor system.

●

Sensor mounting inspection

●

Check sensor pick-up for adhering iron chips.

●

Sensor rotor inspection (e.g. Number of teeth, damaged teeth)

●

Sensor connector engagement inspection

Is inspection result OK?

OK

>> Normal.

NG

>> Repair wheel sensor and rotor system.

Symptom 4 ABS Does Not Work

EFS003J2

Inspection Procedure

1. 

CHECKING ABS WARNING LAMP INDICATION

Check that ABS warning lamp illuminates.

Is inspection result OK?

OK

>> Perform self-diagnosis.

NG

>> GO TO 2.

BRC-124

[VDC/TCS/ABS]

TROUBLE DIAGNOSIS

2. 

CHECKING WHEEL SENSORS

Inspect wheel sensor system.

●

Sensor mounting inspection

●

Check sensor pick-up for adhering iron chips.

●

Sensor rotor inspection (e.g. Number of teeth, damaged teeth)

●

Sensor connector engagement inspection

Is inspection result OK?

OK

>> Normal.

NG

>> Repair wheel sensor and rotor system.

Symptom 5 Pedal Vibration and Noise

EFS003J3

Inspection Procedure

1. 

INSPECTION (1)

Check brake system for pedal vibration or noise at engine start.
Is inspection result OK?

OK

>> Perform self-diagnosis.

NG

>> GO TO 2.

2. 

INSPECTION (2)

Check for vibration during soft braking (just placing foot on pedal).

CAUTION:

ABS may activate in conditions such as those listed below, when wheel speed changes.

●

Gear shifting

●

Turning at high speed

●

Passing through gusts of wind

Is inspection result OK?

OK

>> GO TO 3.

NG

>> Normal.

3. 

INSPECTION (3)

Does vibration occur during normal braking?

CAUTION:

In addition to activation for sudden braking, ABS may activate in conditions such as those listed
below.

●

Roads with low friction coefficients

●

Turning at high speed

●

Passing through gusts of wind

Is inspection result OK?

OK

>> GO TO 4.

NG

>> Normal.

4. 

INSPECTION (4)

Check for vibration when engine speed is increased while vehicle is stopped.

Is inspection result OK?

OK

>> GO TO 5.

NG

>>

●

Normal.

CAUTION:

Vibration may occur when vehicle is stopped.

TROUBLE DIAGNOSIS

BRC-125

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

5. 

INSPECTION (5)

Check for vibration when switches of electrical components are operated.

Is inspection result OK?

OK

>> Check for any wireless devices, antennas, or antenna lead near ABS actuator and electric unit

(control unit) (including wiring) or CAN-LAN converter (CLC).

NG

>> GO TO 6.

6. 

CHECKING ABS WARNING LAMP INDICATION

Confirm ABS warning lamp turns on.

Is inspection result OK?

OK

>> Perform self-diagnosis.

NG

>> GO TO 7.

7. 

CHECKING WHEEL SENSORS

Inspect wheel sensor system.

●

Sensor mounting inspection

●

Sensor pick-up inspection for iron chips (e.g. Number of teeth, damaged teeth)

●

Sensor connector engagement inspection

●

Inspection of wheel sensor circuit

Is inspection result OK?

OK

>> Normal.

NG

>> Repair wheel sensor and rotor system.

Symptom 6 Vehicle Behaves Jerkily During VDC/TCS/ABS Operation

EFS003J4

Inspection Procedure

1. 

CHECKING ENGINE SPEED SIGNAL

On CONSULT-II, perform “DATA MONITOR” for ABS actuator and electric unit (control unit).

Is engine speed at idle 400 rpm or higher?

OK

>> Normal.

NG

>> GO TO 2.

2. 

CHECKING SELF-DIAGNOSIS RESULTS (1)

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

Does anything appear on self-diagnosis results display?

OK

>> Inspect and repair items indicated. Then perform ABS actuator and electric unit (control unit) self-

diagnosis again.

NG

>> GO TO 3.

3. 

ECM SELF-DIAGNOSIS RESULT ITEM CHECK

Perform the ECM self-diagnosis.

Is the result of self-diagnosis “P1336 CKP SENSOR (COG)”?

YES

>> Refer to EC Section.

NO

>> GO TO 4.

BRC-126

[VDC/TCS/ABS]

TROUBLE DIAGNOSIS

4. 

CHECKING SELF-DIAGNOSIS RESULTS (2)

Disconnect ABS actuator and electric unit (control unit) and ECM connectors. Then reconnect them securely.
Perform the self-diagnosis again.

Is inspection result OK?

OK

>> Connector open, shorted or damaged. Repair or replace connector.

NG

>> GO TO 5.

5. 

CHECKING SELF-DIAGNOSIS RESULTS (3)

Perform the A/T self-diagnosis.

Is inspection result OK?

OK

>> GO TO 6.

NG

>> Repair or replace parts at location indicated.

6. 

CHECKING SELF-DIAGNOSIS RESULTS (4)

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

Does anything appear on self-diagnosis results display?

YES

>> Repair or replace parts at location indicated.

NO

>> GO TO 7.

7. 

CHECKING CIRCUIT BETWEEN ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) AND 

CAN-LAN CONVERTER (CLC)

1.

Disconnect ABS actuator and electric unit (control unit) and CLC connectors.

2.

Check for open circuit or short circuits in harness between ABS actuator and electric unit (control unit) and
CLC.

3.

Check ABS actuator and electric unit (control unit) and CLC connectors.

Is inspection result OK?

OK

>> GO TO 8.

NG

>> Repair or replace harness connector.

8. 

CHECKING CIRCUIT BETWEEN CAN-LAN CONVERTER (CLC) AND ECM

1.

Disconnect CLC and ECM connectors.

2.

Check for open or short circuit in harness between CLC and ECM.

3.

Check CLC and ECM connectors.

Is inspection result OK?

OK

>> Reconnect connectors and perform ABS actuator and electric unit (control unit) self-diagnosis

again.

NG

>> Repair or replace harness connector.

Symptom 7 Poor Acceleration

EFS003J5

Inspection Procedure

1. 

INSPECTION START

Engine acceleration is poor while VDC/TCS is operating. Vehicle instability is caused by unstable engine rpm
operation. (Engine is shaking.)

>> GO TO 2.