Nissan GT-R (R35) · Service Manual TRANSMISSION & DRIVELINE

DIAGNOSIS SYSTEM (AWD CONTROL UNIT)

TRANSFER

 
 FUNCTION

CONSULT-III 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 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-III drives some actuators apart from the AWD control unit and also shifts some parameters in a specified range.

 
 ECU IDENTIFICATION

AWD control unit part number can be read.
 
 SELF -DIAGNOSTIC RESULT

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

Refer to DTC Index.
 
 How to Erase Self-Diagnostic Results

Before erasing DTC memory, start the engine and drive at 30 km/h (19 MPH) or more for approximately 1 minute. Check that ABS warning lamp turns OFF.
NOTE：
When AWD warning lamp is ON with system malfunction of DTC “C1203”, run the vehicle at 30 km/h (19MPH) or more for a minute and check that ABS warning lamp is turned OFF. Then turn ignition switch OFF, and start the engine again. Otherwise AWD warning lamp may not turned OFF even if it is normal.
 
 DATA MONITOR
 
 Display Item List

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 lamp is displayed.
4WD MODE SW [##]
 		Mode switch is not equipped, but displayed.
4WD MODE MON [AUTO]
 		Control status of AWD is displayed.
DIS-TIRE MONI [mm]
 		Improper size tire installed condition is displayed.
P BRAKE SW [On/Off]
 		Parking brake 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 [km/h] or [mph]
 		Wheel speed calculated by front RH wheel sensor signal is displayed.
FR LH SENSOR [km/h] or [mph]
 		Wheel speed calculated by front LH wheel sensor signal is displayed.
RR RH SENSOR [km/h] or [mph]
 		Wheel speed calculated by rear RH wheel sensor signal is displayed.
RR LH SENSOR [km/h] or [mph]
 		Wheel speed calculated by rear LH wheel sensor signal is displayed.

 
 ACTIVE TEST
 
 Description

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-III to check operation of actuator.
 
 Test Item

Test item
 		Condition
 		Description
ETS S/V
(Detects AWD solenoid)
  • 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.