Nissan Murano: System Description / Diagnosis System (awd Control Unit)

Nissan Murano (Z52) 2015-2024 Service Manual / Transmission & Driveline / Driveline :: Transfer: Ty21c / System Description / Diagnosis System (awd Control Unit)

CONSULT Function

CAUTION:

After disconnecting the CONSULT vehicle interface (VI) from the data link connector, the ignition must be cycled OFF → ON (for at least 5 seconds) → OFF. If this step is not performed, the BCM may not go to ”sleep mode”, potentially causing a discharged battery and no-start condition.

APPLICATION ITEMS

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

Diagnostic test mode	Function
ECU Identification	AWD control unit part number 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 AWD control unit can be read.
Active Test	Diagnostic Test Mode in which CONSULT drives some actuators apart from the AWD control unit and also shifts some parameters in a specified range.
Work support	This mode enable a technician to adjust some devices faster and more accurately by following the indication on the CONSULT.

*: The following diagnosis information is erased by erasing:

DTC
Freeze frame data (FFD)

ECU IDENTIFICATION

AWD control unit part number can be read.

SELF DIAGNOSTIC RESULT

Refer to DTC Index.

When “PRSNT” is displayed on "Self Diagnostic Result".

The system is presently malfunctioning.

When “PAST” is displayed on "Self Diagnostic Result".

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

FREEZE FRAME DATA (FFD)

The following vehicle status is recorded when DTC is detected and is displayed:

Freeze Frame Data Item	Description
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 is detected, but the system is presently normal. NOTE: Each time when ignition switch 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.

Freeze Frame Data Item

Description

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 is detected, but the system is presently normal.

NOTE:
Each time when ignition switch 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 Nissan Murano vehicle: For information (items) applicable to this vehicle, refer to CONSULT display items.

Monitor item (Unit)	Remarks
STOP LAMP SW [On/Off]	Stop lamp switch signal status via CAN communication line is displayed.
ENG SPEED SIG [Run/Stop]	Engine status is displayed.
ETS ACTUATOR [On/Off]	Operating condition of AWD actuator relay (integrated in AWD control unit) is displayed.
4WD WARN LAMP [On/Off]	Control status of AWD warning icon/display is displayed.
4WD MODE SW [AUTO/LOCK]	Mode switch is not equipped, but displayed.
4WD MODE MON [AUTO/LOCK]	Control status of AWD is displayed.
DIS-TIRE MONI [mm]	Improper size tire installed condition is displayed.
P BRAKE SW [On/Off]	Parking switch signal status via CAN communication line is displayed.
BATTERY VOLT [V]	Power supply voltage for AWD control unit.
THRTL POS SEN [%]	Throttle opening status is displayed.
ETS SOLENOID [A]	Monitored value of current at AWD solenoid.
FR RH SENSOR [mph] or [km/h]	Wheel speed calculated by front wheel sensor RH signal is displayed.
FR LH SENSOR [mph] or [km/h]	Wheel speed calculated by front wheel sensor LH signal is displayed.
RR RH SENSOR [mph] or [km/h]	Wheel speed calculated by rear wheel sensor RH signal is displayed.
RR LH SENSOR [mph] or [km/h]	Wheel speed calculated by rear wheel sensor LH signal is displayed.
Unit characteristic 1 [Amps]	The unit characteristics 1 of electric controlled coupling is displayed.
Unit characteristic 2 [Amps]	The unit characteristics 2 of electric controlled coupling is displayed.
Unit characteristic 3 [Amps]	The unit characteristics 3 of electric controlled coupling is displayed.
Unit characteristic 4 [Amps]	The unit characteristics 4 of electric controlled coupling is displayed.
Unit characteristic 5 [Amps]	The unit characteristics 5 of electric controlled coupling is displayed.

ACTIVE TEST

Use this mode to determine and identify the details of a malfunction based on self-diagnostic results or data monitor. AWD control unit gives drive signal to actuator with receiving command from CONSULT to check operation of actuator.

Test item	Condition	Description
ETS S/V (Detects AWD solenoid)	Nissan Murano Vehicle stopped Engine running No DTC detected	Change command current value to AWD solenoid, and then change driving mode. (Monitor value is normal if it is within approx. ±10% of command value.) Qu: Increase current value in increments of 0.2 A Qd: Decrease current value in increments of 0.2 A UP: Increase current value in increments of 0.02 A DOWN: Decrease current value in increments of 0.02 A

Test item

Condition

Description

ETS S/V

(Detects AWD solenoid)

Nissan Murano Vehicle stopped
Engine running
No DTC detected

Change command current value to AWD solenoid, and then change driving mode. (Monitor value is normal if it is within approx. ±10% of command value.)

Qu: Increase current value in increments of 0.2 A
Qd: Decrease current value in increments of 0.2 A
UP: Increase current value in increments of 0.02 A
DOWN: Decrease current value in increments of 0.02 A

CAUTION:

Never energize continuously for a long time.

WORK SUPPORT

Item	Usage
UNIT CHARACTERISTICS DATA	Display the unit characteristics of electric controlled coupling written to AWD control unit.
UNIT CHARACTERISTICS WRITE	Writes the unit characteristics of electric controlled coupling to AWD control unit.

System. Awd System

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Ecu Diagnosis Information. Awd Control Unit

Values on the Diagnosis Tool 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...

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