Nissan Murano: System Description / Diagnosis System [abs Actuator and Electric Unit (control Unit)]

Nissan Murano (Z52) 2015-2024 Service Manual / Brakes / Brake Control System :: Vdc/tcs/abs / System Description / Diagnosis System [abs Actuator and Electric Unit (control Unit)]

CONSULT Function

APPLICATION ITEMS

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

Mode Function description
ECU Identification Part 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.
Re/programming, Configuration

  • Read and save the Nissan Murano vehicle specification (TYPE ID).

  • Write the vehicle specification (TYPE ID) when replacing ABS actuator and electric unit (control unit).

*: The following diagnosis information is erased by erasing:

  • DTC

  • Freeze frame data (FFD)

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

  • The system is presently malfunctioning.

When “PAST” is displayed on self-diagnosis result

  • System malfunction in the past was detected, but the system is presently normal.

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 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 was detected, but the system is presently normal.

    NOTE:

    Each time when ignition switch OFF to ON, numerical number increases from 1 → 2 → 3...38 → 39. When the operation number of times exceeds 39, the number does not increase and “39” is displayed until self-diagnosis is erased.

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 Nissan Murano 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 approximately 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 On* 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 approximately 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:

Test item Display Item Display
Up ACT UP ACT KEEP
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*
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
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
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*

*: 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:

Test item Display Item Display
On Off
ABS MOTOR MOTOR RELAY On Off
ACTUATOR RLY(Note) On On

NOTE:

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

DATA MONITOR

NOTE:

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

×: Applicable

Item (Unit) Monitor item selection Note
INPUT SIGNALS MAIN SIGNALS

FR LH SENSOR

[km/h (MPH)] 		× × Wheel speed calculated by front wheel sensor LH is displayed.

FR RH SENSOR

[km/h (MPH)] 		× × Wheel speed calculated by front wheel sensor RH is displayed.

RR LH SENSOR

[km/h (MPH)] 		× × Wheel speed calculated by rear wheel sensor LH is displayed.

RR RH SENSOR

[km/h (MPH)] 		× × Wheel speed calculated by rear wheel sensor RH is displayed.

DECEL G-SEN

(m/s2) 		× × Decel G detected by decel G sensor is displayed.

FR RH IN SOL

(On/Off) 		× Operation status of front RH wheel ABS IN valve is displayed.

FR RH OUT SOL

(On/Off) 		× Operation status of front RH wheel ABS OUT valve is displayed.

FR LH IN SOL

(On/Off) 		× Operation status of front LH wheel ABS IN valve is displayed.

FR LH OUT SOL

(On/Off) 		× Operation status of front LH wheel ABS OUT valve is displayed.

RR RH IN SOL

(On/Off) 		× Operation status of rear RH wheel ABS IN valve is displayed.

RR RH OUT SOL

(On/Off) 		× Operation status of rear RH wheel ABS OUT valve is displayed.

RR LH IN SOL

(On/Off) 		× Operation status of rear LH wheel ABS IN valve is displayed.

RR LH OUT SOL

(On/Off) 		× Operation status of rear LH wheel ABS OUT valve is displayed.

EBD WARN LAMP

(On/Off) 		Brake warning lamp ON/OFF status is displayed. (Note 1)

STOP LAMP SW

(On/Off) 		× × Stop lamp switch signal input status is displayed.

MOTOR RELAY

(On/Off) 		× ABS motor and motor relay status is displayed.

ACTUATOR RLY

(On/Off) 		× ABS actuator relay status is displayed.

ABS WARN LAMP

(On/Off) 		× ABS warning lamp ON/OFF status is displayed. (Note 1)

OFF LAMP

(On/Off) 		× VDC OFF indicator lamp ON/OFF status is displayed.(Note 1)

OFF SW

(On/Off) 		× × VDC OFF switch status is displayed.

SLIP/VDC LAMP

(On/Off) 		× VDC warning lamp ON/OFF status is displayed.(Note 1)

BATTERY VOLT

(V) 		× × Voltage supplied to ABS actuator and electric unit (control unit) is displayed.
GEAR × × Current gear position judged from current gear position signal is displayed.

ENGINE RPM

(rpm) 		× × Engine speed status is displayed.

YAW RATE SEN

(d/s) 		× × Yaw rate detected by yaw rate sensor is displayed.

R POSI SIG

(On/Off) 		R range signal input status judged from R range signal is displayed.

4WD MODE MON(Note 2)

(AUTO/LOCK/2WD) 		× × AWD control status is displayed.

N POSI SIG

(On/Off) 		N range signal input status judged from N range signal is displayed.

P POSI SIG

(On/Off) 		P range signal input status judged from P range signal is displayed.

CV1

(On/Off) 		Cut valve 1 (On/Off) status is displayed.

CV2

(On/Off) 		Cut valve 2 (On/Off) status is displayed.

ACCEL POS SIG

(%) 		× Displays the Accelerator pedal position

SIDE G-SENSOR

(m/s2) 		× Side G detected by side G sensor is displayed.
STR ANGLE SIG × Steering angle detected by steering angle sensor is displayed.

PRESS SENSOR

(bar) 		× Brake fluid pressure detected by pressure sensor is displayed.

EBD SIGNAL

(On/Off) 		EBD operation status is displayed.

ABS SIGNAL

(On/Off) 		ABS operation status is displayed.

TCS SIGNAL

(On/Off) 		TCS operation status is displayed.

VDC SIGNAL

(On/Off) 		VDC operation status is displayed.

EBD FAIL SIG

(On/Off) 		EBD fail-safe signal status is displayed.

ABS FAIL SIG

(On/Off) 		ABS fail-safe signal status is displayed.

TCS FAIL SIG

(On/Off) 		TCS fail-safe signal status is displayed.

VDC FAIL SIG

(On/Off) 		VDC fail-safe signal status is displayed.

CRANKING SIG

(On/Off) 		Cranking status is displayed.

FLUID LEV SW

(On/Off) 		× Brake fluid level signal input status via CAN communication is displayed.

USS SIG (Note 3)

(On/Off) 		    hill start assist operation status is displayed.

Note 1: Refer to Warning Lamp/Indicator Lamp for ON/OFF conditions of each warning lamp and indicator lamp.

Note 2: AWD models

Note 3: USS (Hill Start Assist)

WORK SUPPORT

Conditions Description
ST ANGLE SENSOR ADJUSTMENT Perform neutral position adjustment of steering angle sensor.
DECEL G SEN CALIBRATION Perform decel G sensor calibration.

CONFIGURATION

Configuration includes the following functions:

Function Description
Read/Write Configuration Before replacing ECU Allows the reading of Nissan Murano vehicle specification (Type ID) written in the ABS actuator and electric unit (control unit) to store the specification in CONSULT.
After replacing ECU Allows the writing of Nissan Murano vehicle information (Type ID) stored in CONSULT into the ABS actuator and electric unit (control unit).
Manual Configuration Allows the writing of Nissan Murano vehicle information (Type ID) into the ABS actuator and electric unit (control unit) by hand.

CAUTION:

Use “Manual Configuration”“TYPE ID”

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