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Nissan Sentra Service Manual: Diagnosis system [abs actuator and electric unit (control unit)]

Nissan Sentra Service Manual / Brakes / Brake control system / System description / Diagnosis system [abs actuator and electric unit (control unit)]

CONSULT Function (ABS)

FUNCTION

CONSULT can display each diagnostic item using the following direct diagnostic modes.

Direct Diagnostic Mode

Description

ECU identification The ABS actuator and electric unit (control unit) part number is displayed.
Self Diagnostic Result The ABS actuator and electric unit (control unit) self diagnostic results are displayed.
Data Monitor The ABS actuator and electric unit (control unit) input/output data is displayed in real time.
Active Test The ABS actuator and electric unit (control unit) activates outputs to test components.
Work support The settings for ABS actuator and electric unit (control unit) functions can be changed.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication is displayed.

ECU IDENTIFICATION

ABS actuator and electric unit (control unit) part number is displayed.

SELF DIAGNOSTIC RESULT

Operation Procedure

  1. Before performing the self-diagnosis, start engine and drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute.

How To Erase Self Diagnostic Result

  1. After erasing DTC memory, start engine and drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute as the final inspection, and make sure that the ABS warning lamp, VDC OFF indicator lamp, SLIP indicator lamp and brake warning lamp turn OFF.

CAUTION:

If memory cannot be erased, perform applicable diagnosis.

NOTE:

Display Item List

Refer to BRC-43, "DTC Index".

DATA MONITOR





×: Applicable


×: Applicable

–: Not applicable

ACTIVE TEST

The active test is used to determine and identify details of a malfunction, based on self-diagnosis test results and data obtained in the DATA MONITOR. In response to instructions from CONSULT, instead of those from ABS actuator and electric unit (control unit) on the vehicle, a drive signal is sent to the actuator to check its operation.

CAUTION:

NOTE:

ABS IN Valve and ABS OUT Valve

When “Up”, “Keep” or “Down” is selected on display screen, the following items are displayed when system is normal.

*: Immediately after being selected, status is “On”. Status


*: Immediately after being selected, status is “On”. Status changes to “Off” after approx. 2 seconds.

ABS IN Valve (ACT) and ABS OUT Valve (ACT)

When “Up”, “ACT UP” or “ACT KEEP” is selected on display screen, the following items are displayed when system is normal.

*: Immediately after being selected, status is “On”. Status


*: Immediately after being selected, status is “On”. Status changes to “Off” after approx. 10 seconds.

ABS Motor

When “On” or “Off” is selected on display screen, the following items are displayed when system is normal.

NOTE:


NOTE:

Display occasionally changes On/Off for a moment after ignition switch is turned ON. This is an operation for checking purposes and is not a malfunction.

WORK SUPPORT

Conditions

Description

ST ANGLE SENSOR ADJUSTMENT Steering angle sensor neutral position adjustment can be performed.

Refer to BRC-54, "Work Procedure".

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