Infiniti M35/M45 Y50. Manual - part 1129

TROUBLE DIAGNOSIS

TF-23

C

E

F

G

H

I

J

K

L

M

A

B

TF

NOTE:
Make sure that ABS warning lamp turns OFF by driving for a minute at vehicle speed of 30 km/h
(19 MPH) or more after turning ignition switch “OFF” if AWD warning lamp turns ON with system
malfunction of “ABS SYSTEM [C1203]”. AWD warning lamp may not turn OFF if it is normal unless
ignition switch turns OFF at once and engine restarts after that.

4.

Turn ignition switch “OFF” to erase memory.

5.

Start engine and select “SELF-DIAG RESULTS” mode for “ALL MODE AWD/4WD” with CONSULT-II.

6.

Touch “ERASE” on CONSULT-II screen to erase DTC memory.

CAUTION:

If memory cannot be erased, perform applicably diagnosis.

7.

Drive at 30 km/h (19 MPH) or more for approx. 1 minute. Be sure AWD warning lamp is OFF.

TF-24

TROUBLE DIAGNOSIS

DATA MONITOR MODE
Operation Procedure

1.

Perform “CONSULT-II Start Procedure”. Refer to 

GI-38, "CONSULT-II Start Procedure"

 .

2.

Touch “DATA MONITOR”.

3.

Select from “SELECT MONITOR ITEM”, screen of data monitor mode is displayed.

NOTE:
When malfunction is detected, CONSULT-II performs REAL-TIME DIAGNOSIS.
Also, any malfunction detected while in this mode will be displayed at real time.

Display Item List

×

: Standard

–: Not applicable

Monitor item (Unit)

SELECT MONITOR ITEM

Remarks

ECU INPUT 

SIGNALS

MAIN

SIGNALS

SELECTION 

FROM MENU

FR RH SENSOR [km/h] or [mph]

×

×

×

Wheel speed calculated by front wheel 
sensor RH signal is displayed.

FR LH SENSOR [km/h] or [mph]

×

×

×

Wheel speed calculated by front wheel 
sensor LH signal is displayed.

RR RH SENSOR [km/h] or [mph]

×

×

×

Wheel speed calculated by rear wheel 
sensor RH signal is displayed.

RR LH SENSOR [km/h] or [mph]

×

×

×

Wheel speed calculated by rear wheel 
sensor LH signal 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 sole-
noid

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 dis-
played.

4WD WARN LAMP [ON/OFF]

–

–

×

Control status of AWD warning lamp is dis-
played.

4WD MODE SW [AUTO]

–

–

×

Mode switch is not equipped, but dis-
played.

4WD MODE MON [AUTO]

–

–

×

Control status of AWD is displayed.

DIS-TIRE MONI [mm]

–

–

×

Improper size tire installed condition is dis-
played.

P BRAKE SW [ON/OFF]

–

–

×

Parking switch signal status via CAN com-
munication line is displayed.

Voltage [V]

–

–

×

The value measured by the voltage probe 
is displayed.

Frequency [Hz]

–

–

×

The value measured by the pulse probe is 
displayed.

DUTY-HI (high) [%]

–

–

×

DUTY-LOW (low) [%]

–

–

×

PLS WIDTH-HI [msec]

–

–

×

PLS WIDTH-LOW [msec]

–

–

×

TROUBLE DIAGNOSIS

TF-25

C

E

F

G

H

I

J

K

L

M

A

B

TF

ACTIVE TEST MODE
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-II to check
operation of actuator.

Test Item

CAUTION:

Do not continuously energize for a long time.

AWD CONTROL UNIT PART NUMBER

Ignore the AWD control unit part number displayed in the “ECU PART NUMBER”.
Refer to parts catalog to order the AWD control unit.

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 driv-
ing mode. (Monitor value is normal if it is within approximately 

±

10% of 

command value.)
Qu: Increase current value in increments of 0.20A
Qd: Decrease current value in increments of 0.20A
UP: Increase current value in increments of 0.02A
DOWN: Decrease current value in increments of 0.02A

TF-26

TROUBLE DIAGNOSIS FOR SYSTEM

TROUBLE DIAGNOSIS FOR SYSTEM

PFP:00000

Power Supply Circuit for AWD Control Unit

NDS000DN

CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE

Data are reference value.

DIAGNOSTIC PROCEDURE

1. 

CHECK POWER SUPPLY 

1.

Turn ignition switch “OFF”.

2.

Disconnect AWD control unit harness connector.

3.

Turn ignition switch “ON”. (Do not start engine.)

4.

Check voltage between AWD control unit harness connector ter-
minals and ground.

5.

Turn ignition switch “OFF”.

6.

Check voltage between AWD control unit harness connector ter-
minals and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Check the following. If any items are damaged, repair or 

replace damaged parts.

●

10A fuse [No.33, located in the fuse block (J/B)]

●

10A fuse [No.82, located in the IPDM E/R]

●

Harness for short or open between battery and AWD control unit harness connector terminal 9

●

Harness for short or open between ignition switch and AWD control unit harness connector ter-
minal 7

●

Ignition switch. Refer to 

PG-3, "POWER SUPPLY ROUTING CIRCUIT"

 .

Monitor item [Unit]

Condition

Display value (Approx.)

BATTERY VOLT [V]

Ignition switch: ON

Battery voltage

Connector

Terminal Voltage 

(Approx.)

F109

7 - Ground

Battery voltage

9 - Ground

SDIA2319E

Connector

Terminal Voltage 

(Approx.)

F109

7 - Ground

0V

9 - Ground

Battery voltage

SDIA2320E