2005 INFINITI FX35 4WD

TROUBLE DIAGNOSES WORK FLOW LAN-27
[CAN]
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Revision: 2005 July 2005 FX
DESCRIPTION OF “CAN DIAG SUPPORT MNTR” SCREEN FOR UNIFIED METER AND A/C
AMP.
Display Results (Present)

OK: Normal

UNKWN: The diagnosed unit does not transmit or receive the applicable data normally.

–: There is no received unit or the unit is not in the condition that reception diagnosis is performed.
Display Results (Past)

OK: Normal

0: There is malfunction now.

1 ~ 39: Displays when it is normal at present and finds malfunction in the past. It increases like 0 →1→ 2...38 →39 after returning to the
normal condition whenever IGN OFF →ON. If it is over 39, it is fixed to 39 until the self-diagnostic results are erased. It returns to 0
when malfunction is detected again in the process.

–: Undiagnosed
PKIB5986E
“SELECT SYSTEM” screen “CAN DIAG SUPPORT
MNTR” screen Description Present Past
METER A/C AMP TRANSMIT DIAG Make sure of normal transmission. OK/UNKWN/–
OK/0/1~39/–
ECM Make sure of normal reception from ECM. OK/UNKWN/–
TCM Make sure of normal reception from TCM. OK/UNKWN/–
BCM/SEC Make sure of normal reception from BCM. OK/UNKWN/–
VDC/TCS/ABS Make sure of normal reception from ABS actuator
and electric unit (control unit). OK/UNKWN/–
IPDM E/R IPDM E/R is not diagnosed. –
DISPLAY Make sure of normal reception from display control
unit. OK/UNKWN/–
Make sure of normal reception from display unit. OK/UNKWN/–
I-KEY Make sure of normal reception from Intelligent Key
unit. OK/UNKWN/–
EPS EPS is not diagnosed. –
AWD/4WD Make sure of normal reception from AWD control
unit. OK/UNKWN/–
e4WD e4WD is not diagnosed. –
ICC Make sure of normal reception from ICC unit. OK/UNKWN/–
LANE KEEP LANE KEEP is not diagnosed. –
TIRE-P Make sure of normal reception from BCM.
(Not available for CAN system diagnosis.) OK/UNKWN

LAN-28
[CAN]
TROUBLE DIAGNOSES WORK FLOW
Revision: 2005 July 2005 FX
DESCRIPTION OF “CAN DIAG SUPPORT MNTR” SCREEN
FOR ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)
Display Results (Present)

OK: Normal

NG: Malfunction

UNKWN: The diagnosed unit does not transmit or receive the applicable data normally.
DESCRIPTION OF “CAN DIAG SUPPORT MNTR” SCREEN
FOR DRIVER SEAT CONTROL UNIT
Display Results (Present)

OK: Normal

NG: Malfunction

UNKWN: The diagnosed unit does not transmit or receive the applicable data normally.
SKIB2442E
“SELECT SYSTEM”
screen “CAN DIAG SUPPORT
MNTR” screen Description Present
ABS INITIAL DIAG Make sure that microcomputer in ECU works normally. OK/NG
TRANSMIT DIAG Make sure of normal transmission. OK/UNKWN
ECM Make sure of normal reception from ECM. OK/UNKWN
TCM Make sure of normal reception from TCM. OK/UNKWN
METER/M&A METER/M&A is not diagnosed. UNKWN
STRG Make sure of normal reception from steering angle sensor. OK/UNKWN
ICC ICC is not diagnosed. UNKWN
AWD/4WD Make sure of normal reception from AWD control unit. OK/UNKWN
SKIB2360E
“SELECT SYSTEM” screen “CAN DIAG SUPPORT
MNTR” screen Description Present
AUTO DRIVE POS. INITIAL DIAG Make sure that microcomputer in ECU works normally. OK/NG
TRANSMIT DIAG Make sure of normal transmission. OK/UNKWN
BCM/SEC Make sure of normal reception from BCM. OK/UNKWN
METER/M&A Make sure of normal reception from unified meter and A/C amp. OK/UNKWN
TCM Make sure of normal reception from TCM. OK/UNKWN

TF-1
TRANSFER
D DRIVELINE/AXLE
CONTENTS
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TRANSFER
PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 3
Precautions ......................................................... ..... 3
Service Notice or Precautions ............................. ..... 4
PREPARATION ...................................................... ..... 5
Special Service Tools .......................................... ..... 5
Commercial Service Tools ................................... ..... 7
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ........................................... ..... 8
NVH Troubleshooting Chart ................................ ..... 8
TRANSFER FLUID ................................................ ..... 9
Replacement ....................................................... ..... 9
DRAINING ........................................................ ..... 9
FILLING ............................................................ ..... 9
Inspection ............................................................ ..... 9
FLUID LEAKAGE AND FLUID LEVEL ............. ..... 9
AWD SYSTEM ....................................................... ... 10
Power Transfer Diagram ..................................... ... 10
System Description ............................................. ... 10
DESCRIPTION ................................................. ... 10
ELECTRIC CONTROLLED COUPLING .......... .... 11
AWD CONTROL UNIT ..................................... .... 11
AWD WARNING LAMP .................................... ... 12
System Diagram .................................................. ... 12
COMPONENTS FUNCTION DESCRIPTION .. ... 13
CAN Communication ........................................... ... 13
SYSTEM DESCRIPTION ................................. ... 13
TROUBLE DIAGNOSIS ......................................... ... 14
Fail-Safe Function ............................................... ... 14
How to Perform Trouble Diagnosis ..................... ... 14
BASIC CONCEPT ............................................ ... 14
Location of Electrical Parts .................................. ... 15
Circuit Diagram ................................................... ... 16
Wiring Diagram — AWD — ................................. ... 17
Trouble Diagnosis Chart for Symptoms .............. ... 20
AWD Control Unit Input/Output Signal Reference
Values ................................................................. ... 20 AWD CONTROL UNIT INSPECTION TABLE ..
... 20
CONSULT-II Function (ALL MODE AWD/4WD) .. ... 22
FUNCTION ....................................................... ... 22
CONSULT-II SETTING PROCEDURE ............. ... 22
SELF-DIAG RESULT MODE ............................ ... 22
DATA MONITOR MODE ................................... ... 24
ACTIVE TEST MODE ...................................... ... 25
AWD CONTROL UNIT PART NUMBER .......... ... 25
TROUBLE DIAGNOSIS FOR SYSTEM ................. ... 26
Power Supply Circuit for AWD Control Unit ......... ... 26
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ............................................. ... 26
DIAGNOSTIC PROCEDURE ........................... ... 26
AWD Control Unit ................................................ ... 27
DIAGNOSTIC PROCEDURE ........................... ... 27
ABS System ........................................................ ... 27
DIAGNOSTIC PROCEDURE ........................... ... 27
AWD Solenoid ..................................................... ... 28
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ............................................. ... 28
DIAGNOSTIC PROCEDURE ........................... ... 28
COMPONENT INSPECTION ........................... ... 30
AWD Actuator Relay ............................................ ... 31
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ............................................. ... 31
DIAGNOSTIC PROCEDURE ........................... ... 31
Engine Control Signal .......................................... ... 32
DIAGNOSTIC PROCEDURE ........................... ... 32
CAN Communication Line ................................... ... 32
DIAGNOSTIC PROCEDURE ........................... ... 32
TROUBLE DIAGNOSIS FOR SYMPTOMS ........... ... 33
AWD Warning Lamp Does Not Turn ON When The
Ignition Switch Is Turned to ON ........................... ... 33
DIAGNOSTIC PROCEDURE ........................... ... 33
AWD Warning Lamp Does Not Turn OFF Several
Seconds after Engine Started .............................. ... 33
DIAGNOSTIC PROCEDURE ........................... ... 33
Heavy Tight-Corner Braking Symptom Occurs
When The Vehicle Is Driven and The Steering Wheel
Is Turned Fully to Either Side after The Engine Is

TROUBLE DIAGNOSIS TF-21
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Revision: 2005 July 2005 FX
*: The values are changed by throttle opening and engine speed. RR RH SENSOR [km/h] or [mph]
Wheel speed (Rear wheel
right) Vehicle stopped 0.00 km/h (0.00 mph)
Vehicle running
CAUTION:
Check air pressure of tire under
standard condition. Approximately equal to
the indication on speed-
ometer (Inside of ±10%)
RR LH SENSOR [km/h] or [mph] Wheel speed (Rear wheel
left) Vehicle stopped 0.00 km/h (0.00 mph)
Vehicle running
CAUTION:
Check air pressure of tire under
standard condition. Approximately equal to
the indication on speed-
ometer (Inside of ±10%)
BATTERY VOLT [V] Power supply voltage for
AWD control unit Ignition switch: ON Battery voltage
THRTL POS SEN [%] Throttle opening condition When depressing accelerator pedal
(Value rises gradually in response to
throttle position.) 0 - 100%
ETS SOLENOID [A] Monitored value of current at
AWD solenoid Engine running

At idle speed
Approx. 0.000A
Engine running

When depressing accelerator
pedal Approx. 0.000 - 2.400A*
STOP LAMP SW [ON/OFF] Condition of brake pedal
operation Brake pedal: Depressed ON
Brake pedal: Released OFF
ENG SPEED SIG [RUN/STOP] Condition of engine running Engine stopped
(Engine speed: Less than 400 rpm) STOP
Engine running
(Engine speed: 400 rpm or more) RUN
ETS ACTUATOR [ON/OFF] Operating condition of AWD
actuator relay (integrated in
AWD control unit) Engine stopped (Ignition
switch: ON) OFF
Engine running ON
4WD WARN LAMP [ON/OFF] AWD warning lamp condition AWD warning lamp: ON ON
AWD warning lamp: OFF OFF
4WD MODE MON [AUTO] Control status of AWD Engine running AUTO
DIS-TIRE MONI [mm] Improper size tire installed
condition Vehicle running with normal size tire
installed 0-4 mm
Vehicle running with improper size
tire installed (Front/rear tire size dif-
ference, wear condition) 4-8 mm, 8- mm
P BRAKE SW [ON/OFF] Condition of parking brake Parking brake operated ON
Parking brake not operated OFF
Monitored item [Unit] Content Condition Display value

TF-22
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
CONSULT-II Function (ALL MODE AWD/4WD)ADS000S5
FUNCTION
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II SETTING PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.

For details, refer to the separate “CONSULT-II Operations Man-
ual”.
1. Turn ignition switch “OFF”.
2. Connect CONSULT-II and CONSULT-II CONVERTER to data link connector on vehicle.
3. Turn ignition switch “ON”.
4. Touch “START (NISSAN BASED VHCL)”.
5. Touch “ALL MODE AWD/4WD”. If “ALL MODE AWD/4WD” is not indicated, go to GI-39, "
CON-
SULT-II Data Link Connector (DLC) Circuit" .
6. Perform each diagnostic test mode according to each service procedure.
SELF-DIAG RESULT MODE
Operation Procedure
1. Perform “CONSULT-II SETTING PROCEDURE”. Refer to TF-22, "CONSULT-II SETTING PROCEDURE"
.
2. Start engine and drive at 30 km/h (19 MPH) or more for approx. 1 minute.
Diagnostic test mode Function Reference
page
Self-diagnostic results

Self-diagnostic results can be read and erased quickly. TF-22
Data monitor
Input/Output data in the AWD control unit can be read.TF-24
CAN diagnostic support monitor
The results of transmit/receive diagnosis of CAN communication can be read.LAN-18
Active test
Diagnostic Test Mode in which CONSULT-II drives some actuators apart from
the AWD control unit and also shifts some parameters in a specified range. TF-25
ECU part number
AWD control unit part number can be read.
TF-25
PBIB1503E
SAIA0450E
SDIA2216E

TROUBLE DIAGNOSIS TF-23
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3. Stop vehicle. With engine at idle, touch “SELF-DIAG RESULTS”.
Display shows malfunction experienced since the last erasing
operation.
NOTE:

The details for “TIME” are as follow:
–“0”: Error currently detected with AWD control unit.
–Except for “0”: Error detected in the past and memorized
with AWD control unit.
Detects frequency of driving after DTC occurs (frequency
of turning ignition switch “ON/OFF”).
Display Item List
CAUTION:

If “CAN COMM CIRCUIT [U1000]” is displayed with other DTCs, first perform the trouble diagnosis for CAN communica-
tion line.

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.
How to Erase Self-Diagnostic Results
1. Perform applicably inspection of malfunctioning item and then repair or replace.
2. Start engine and drive at 30 km/h (19 MPH) or more for approx. 1 minute.
3. Make sure that ABS warning lamp turns OFF. 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.
SDIA2217E
Items (CONSULT-II screen terms) Diagnostic item is detected when... Check item
CONTROLLER FAILURE
[C1201] Malfunction has occurred inside AWD control unit.
TF-27, "
AWD Control Unit"
ABS SYSTEM
[C1203] Malfunction related to wheel sensor has been detected by ABS actu-
ator and electric unit (control unit). TF-27, "ABS System"
4WD SOLENOID
[C1204] Malfunction related to AWD solenoid has been detected.
TF-28, "AWD Solenoid"
4WD ACTUATOR RLY
[C1205] Malfunction has been detected from AWD actuator relay integrated
with AWD control unit, or malfunction related to AWD solenoid has
been detected. TF-31, "AWD Actuator
Relay" or
TF-28, "AW D
Solenoid"
ENGINE SIGNAL 1
[C1210] Malfunction has been detected from ECM. TF-32, "Engine Control Sig-
nal"
CAN COMM CIRCUIT
[U1000] Malfunction has been detected from CAN communication line.
TF-32, "CAN Communica-
tion Line"
NO DTC IS DETECTED.
FURTHER TESTING MAY BE
REQUIRED. No NG item has been detected. —

TF-24
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
DATA MONITOR MODE
Operation Procedure
1. Perform “CONSULT-II SETTING PROCEDURE”. Refer to TF-22, "CONSULT-II SETTING 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
Monitored item (Unit) Monitor item selection
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] – – × AWD lock 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 FOR SYSTEM TF-27
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2. CHECK GROUND CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect AWD control unit harness connector.
3. Check continuity between AWD control unit harness connector M92 terminals 10 (B), 11 (B) and ground.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
3. CHECK DTC
Start engine.
Does AWD warning lamp turn OFF?
YES >> INSPECTION END
NO >> Perform the self-diagnosis, repair or replace damaged parts. Refer to TF-22, "
SELF-DIAG
RESULT MODE" .
AWD Control UnitADS000SY
DIAGNOSTIC PROCEDURE

Check the following if “CONTROLLER FAILURE [C1201]” is displayed in self-diagnostic results of CON-
SULT-II.
1. PERFORM SELF-DIAGNOSIS
With CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “SELF-DIAG RESULTS” mode for “ALL MODE AWD/4WD” with CONSULT-II.
3. Touch “ERASE”.
4. Turn ignition switch “OFF” and wait at least 10 seconds.
5. Perform the self-diagnosis again.
Is the
“CONTROLLER FAILURE [C1201]” displayed?
YES >> Replace AWD control unit. Refer to TF-39, "AWD CONTROL UNIT" .
NO >> INSPECTION END
ABS SystemADS000SZ
DIAGNOSTIC PROCEDURE

Check the following if “ABS SYSTEM [C1203]” is displayed in self-diagnostic results of CONSULT-II.
1. CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Perform self-diagnosis with ABS actuator and electric unit (control unit). Refer to BRC-27, "
SELF-DIAGNO-
SIS" .
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 2. Continuity should exist.
SDIA1883E