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Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control System >> VDC/TCS/Abs >> Description >> Diagnosis System [Abs Actuator And Electric Unit (Control Unit)] >> Consult Function >> Diagnosis Description

Diagnosis Description

APPLICATION ITEMS 

CONSULT can display each diagnostic item using the diagnostic test modes as follows:

Mode

Function description

ECU Identification

Parts number of ABS actuator and electric unit (control unit) can be read.

Self Diagnostic Result

Self-diagnostic results and freeze frame data can be read and erased quickly. *

Data Monitor

Input/Output data in the ABS actuator and electric unit (control unit) can be read.

Active Test

Diagnostic Test Mode in which CONSULT drives some actuators apart from the ABS actuator and electric unit (control unit) and also shifts some parameters in a specified range.

Work support

Components can be quickly and accurately adjusted.

*: The following diagnosis information is erased by erasing:

ECU IDENTIFICATION 

ABS actuator and electric unit (control unit) part number can be read.

SELF DIAGNOSTIC RESULT 

Refer to DTC Index .

When "CRNT" is displayed on self-diagnosis result

When "PAST" is displayed on self-diagnosis result

Freeze frame data (FFD) 

The following vehicle status is recorded when DTC is detected and is displayed on CONSULT.

Item name

Display Item

IGN counter

(0 - 39)

The number of times that ignition switch is turned ON after the DTC is detected is displayed.

  • When "0" is displayed: It indicates that the system is presently malfunctioning.
  • When except "0" is displayed: It indicates that system malfunction in the past is detected, but the system is presently normal.
    NOTE: Each time when ignition switch is turned OFF to ON, numerical number increases in 1->2->3...38->39. When the operation number of times exceeds 39, the number do not increase and "39" is displayed until self diagnosis is erased.

DATA MONITOR 

NOTE: The following table includes information (items) inapplicable to this vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items.

x: Applicable

Item (Unit)

Monitor item selection

Note

INPUT SIGNALS

MAIN ITEMS

FR LH SENSOR

(MPH)

x

x

Wheel speed calculated by front LH wheel sensor is displayed.

FR RH SENSOR

(MPH)

x

x

Wheel speed calculated by front RH wheel sensor is displayed.

RR LH SENSOR

(MPH)

x

x

Wheel speed calculated by rear LH wheel sensor is displayed.

RR RH SENSOR

(MPH)

x

x

Wheel speed calculated by rear RH wheel sensor is displayed.

ACCEL POS SIG

(%)

x

Displays the Accelerator pedal position.

SIDE G-SENSOR

(m/s2)

x

Side G detected by yaw rate/side/decel G sensor is displayed.

BATTERY VOLT

(V)

x

x

Voltage supplied to ABS actuator and electric unit (control unit) is displayed.

DECEL G-SEN

(G)

x

x

Decel G detected by decel G sensor is displayed.

ENGINE SPEED

x

x

Engine speed status is displayed.

STR ANGLE SIG

(On/Off)

x

Steering angle status is displayed.

PRESS SENSOR

(bar)

x

Brake fluid pressure detected by pressure sensor is displayed.

VSO

Vehicle speed status is diplayed

FR WHEEL SPD

(MPH)

Wheel speed calculated by front RH wheel sensor is displayed.

FL WHEEL SPD

(MPH)

Wheel speed calculated by front LH wheel sensor is displayed.

RR WHEEL SPD

(MPH)

Wheel speed calculated by rear RH wheel sensor is displayed.

RL WHEEL SPD

(MPH)

Wheel speed calculated by rear LH wheel sensor is displayed.

YAW RATE SEN

(d/s)

x

x

Yaw rate detected by yaw rate/side/decel G sensor is displayed.

FR LH IN SOL *1

(On/Off)

x

Operation status of front LH wheel ABS IN valve is displayed.

FR RH IN SOL *1

(On/Off)

x

Operation status of front RH wheel ABS IN valve is displayed.

FR RH OUT SOL *1

(On/Off)

x

Operation status of front RH wheel ABS OUT valve is displayed.

FR RH IN SOL *1

(On/Off)

x

Operation status of front RH wheel ABS IN valve is displayed.

FR LH OUT SOL *1

(On/Off)

x

Operation status of front LH wheel ABS OUT valve is displayed.

RR RH IN SOL *1

(On/Off)

x

Operation status of rear RH wheel ABS IN valve is displayed.

RR RH OUT SOL *1

(On/Off)

x

Operation status of rear RH wheel ABS OUT valve is displayed.

RR LH IN SOL *1

(On/Off)

x

Operation status of rear LH wheel ABS IN valve is displayed.

RR LH OUT SOL *1

(On/Off)

x

Operation status of rear LH wheel ABS OUT valve is displayed.

EBD WARN LAMP

(On/Off)

Brake warning lamp ON/OFF status is displayed. *2

STOP LAMP SW

(On/Off)

Stop lamp switch signal input status is displayed.

ABS WARN LAMP

(On/Off)

ABS warning lamp ON/OFF status is displayed. *2

MOTOR RELAY

(On/Off)

ABS motor and motor relay status is displayed.

ACTUATOR RLY *1

(On/Off)

ABS actuator relay status is displayed.

OFF LAMP

(On/Off)

VDC OFF indicator lamp ON/OFF status is displayed. *2

OFF SW

(On/Off)

VDC OFF signal status is displayed. *2

SLIP/VDC LAMP

(On/Off)

VDC operation status (Lamp blinking) is displayed. *2

TRQ DOWN SIG

(On/Off)

Operation of engine torque down signal is displayed.

EBD SIG

(On/Off)

Operation status of EBD function is displayed.

ABS SIG

(On/Off)

Operation status of ABS function is displayed.

TCS SIG

(On/Off)

Operation status of TCS function is displayed.

VDC SIG

(On/Off)

Operation status of VDC function is displayed.

EBD FAIL SIG

(On/Off)

Fail-safe signal status of EBD function is displayed.

ABS FAIL SIG

(On/Off)

Fail-safe signal status of ABS function is displayed.

TCS FAIL SIG

(On/Off)

Fail-safe signal status of TCS function is displayed.

VDC FAIL SIG

(On/Off)

Fail-safe signal status of VDC function is displayed.

GEAR

x

Gear position is displayed.

N POSI SIG

(On/Off)

N range signal input status judges from N range signal is displayed.

P POSI SIG

(On/Off)

P range signal input status judges from P range signal is displayed.

R POSI SIG

(On/Off)

R range signal input status judges from R range signal is displayed.

CRANKING SIG

(On/Off)

Cranking status is displayed.

FLUID LEV SW

(On/Off)

x

Brake fluid level signal input status is displayed.

PARK BRAKE SW

(On/Off)

x

Brake switch signal input status is displayed.

CV1 *1

(On/Off)

Operation status of cut valve 1 is displayed.

CV2 *1

(On/Off)

Operation status of cut valve 2 is displayed.

SV1 *1

(On/Off)

Operation status of suction valve 1 is displayed.

SV2 *1

(On/Off)

Operation status of suction valve 2 is displayed.

RELEASE SW NC

(On/Off)

Release switch signal (On/Off) status is displayed. "Off" indicates that the brake pedal is depressed. "On" indicates that the brake pedal is released.

OHB FAIL

(On/Off)

HBB/HBC function is displayed.

HBA FAIL

(On/Off)

HBA fail safe is displayed.

OHB SIG

(On/Off)

OHB operation (On/Off) status is displayed.

HBA SIG

(On/Off)

Operation status of HBB/HBC function is displayed

USS SIG

(On/Off)

Hill start assist function is displayed

Wheel speed repro impossible

(On/Off)

Wheel speed precondition for reprogramming not met

Low voltage repro impossible

(On/Off)

Voltage level precondition for reprogramming not met

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

*2: Refer to System Description  for ON/OFF conditions of each warning lamp and indicator lamp.

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:
  • Never perform ACTIVE TEST while driving the vehicle.
  • Always bleed air from brake system before active test.
  • Never perform active test when system is malfunctioning.
NOTE:
  • When active test is performed while depressing the pedal, the pedal depressing stroke may change. This is not a malfunction.
  • "TEST IS STOPPED" is displayed approx. 10 seconds after operation start.
  • When performing active test again after "TEST IS STOPPED" is displayed, select "BACK".
  • ABS warning lamp, brake warning lamp and VDC warning lamp may turn ON during active test. This is not a malfunction.

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:

Test item

Display item

Display

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

Off

On

FR LH OUT SOL

Off

Off

On *

RR RH SOL

RR RH IN SOL

Off

On

On

RR RH OUT SOL

Off

Off

On *

RR LH SOL

RR LH IN SOL

Off

On

On

RR LH OUT SOL

Off

Off

On *

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

ABS In Valve (ACT), 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:

Test item

Display item

Display

Up

ACT KEEP

ACT UP

FR RH ABS SOLENOID (ACT)

FR RH IN SOL

Off

Off

Off

FR RH OUT SOL

Off

Off

Off

CV1

Off

Off

Off

CV2

Off

On

On

SV1

Off

Off

Off

SV2

Off

On *

Off

FR LH ABS SOLENOID (ACT)

FR LH IN SOL

Off

Off

Off

FR LH OUT SOL

Off

Off

Off

CV1

Off

On

On

CV2

Off

Off

Off

SV1

Off

On *

Off

SV2

Off

Off

Off

RR RH ABS SOLENOID (ACT)

RR RH IN SOL

Off

Off

Off

RR RH OUT SOL

Off

Off

Off

CV1

Off

On

On

CV2

Off

Off

Off

SV1

Off

On *

Off

SV2

Off

Off

Off

RR LH ABS SOLENOID (ACT)

RR LH IN SOL

Off

Off

Off

RR LH OUT SOL

Off

Off

Off

CV1

Off

Off

Off

CV2

Off

On

On

SV1

Off

Off

Off

SV2

Off

On *

Off

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

ABS MOTOR 

When "ON" or "OFF" is selected on display screen, the following items are displayed when system is normal:

Test item

Display item

Display

On

Off

ABS MOTOR

MOTOR RELAY

On

Off

ACTUATOR RLY

On

On

WORK SUPPORT 

Item

Description

ST ANGLE SENSOR ADJUSTMENT

Perform neutral position adjustment of steering angle sensor.

DECEL G SEN CALIBRATION

Perform decel G sensor calibration.

RE/PROGRAMMING, CONFIGURATION 

Configuration includes the following functions:

Function

Description

Read/Write Configuration

Before replacing ECU
  • Allows the reading of vehicle specification (Type ID) written in ABS actuator and electric unit (control unit).
  • Allows the reading of vehicle specification (Type ID) store in CONSULT.

After replacing ECU

Allows the writing of vehicle information (Type ID) stored in CONSULT into the ABS actuator and electric unit (control unit).

Manual Configuration

Allows the writing of vehicle specification (Type ID) into the ABS actuator and electric unit (control unit) by hand.
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