Nissan Murano Z50 (2003 year). Manual

TROUBLE DIAGNOSIS

TF-49

Revision; 2004 April

2003 Murano

TROUBLE DIAGNOSIS

PFP:00004

Fail-Safe Function

ADS000H0

●

If any malfunction occurs in AWD electrical system, and control unit detects the malfunction, AWD warn-
ing lamp on combination meter turns ON to indicate system malfunction.

●

When AWD warning lamp is ON, vehicle changes to front-wheel drive.

How to Proceed with Trouble Diagnosis

ADS000H1

BASIC CONCEPT

●

To perform trouble diagnosis, it is the most important to have understanding about vehicle systems (con-
trol and mechanism) thoroughly.

●

It is also important to clarify customer complaints before inspec-
tion.
First of all, reproduce symptoms, and understand them fully.
Ask customer about his/her complaints carefully. In some cases,
it will be necessary to check symptoms by driving vehicle with
customer.

CAUTION:

Customers are not professional. It is dangerous to make an
easy guess like "maybe the customer means that...," or
"maybe the customer mentions this symptom".

●

It is essential to check symptoms right from the beginning in
order to repair malfunctions completely.
For intermittent malfunctions, reproduce symptoms based on
interview with customer and past examples. Do not perform
inspection on ad hoc basis. Most intermittent malfunctions are
caused by poor contacts. In this case, it will be effective to shake
suspected harness or connector by hand. When repairing with-
out any symptom diagnosis, you cannot judge if malfunctions
have actually been eliminated.

●

After completing diagnosis, always erase diagnostic memory.
Refer to

TF-53, "Operation Procedure"

●

For intermittent malfunctions, move harness or harness connec-
tor by hand. Then check for poor contact or false open circuit.

SEF233G

SEF234G

TF-50

TROUBLE DIAGNOSIS

Revision; 2004 April

2003 Murano

Trouble Diagnosis Chart for Symptoms

ADS000H2

Symptom

Condition

Check items

Reference page

When ignition switch is
turned ON, AWD LOCK indi-
cator lamp does not illumi-
nate for approx. 1 second.
(AWD LOCK lamp check)

IGN-ON

●

Malfunction AWD LOCK indicator lamp circuit.

●

Fuse between ignition and AWD LOCK indicator
lamp is blown out.

●

Open circuit between ignition and AWD LOCK
indicator lamp.

●

Malfunction of unified meter control unit.

●

AWD control unit does not receive the CAN Com-
munication signal from the unified meter and A/C
amp..

TF-64, "AWD LOCK INDICA-
TOR LAMP DOES NOT
COME ON FOR APPROXI-
MATELY 1 SECOND WHEN
THE IGNITION SWITCH IS
TURNED TO ON."

AWD warning lamp does not
illuminate with ignition switch
ON. (AWD warning lamp
check)

IGN-ON

●

Malfunction of AWD warning lamp circuit.

●

Fuse between ignition and AWD warning lamp
blown out.

●

Open circuit between ignition and AWD warning
lamp.

●

Malfunction of unified meter control unit.

●

AWD control unit does not receive the CAN Com-
munication signal from the unified meter and A/C
amp..

TF-65, "AWD WARNING
LAMP DOES NOT ILLUMI-
NATE WITH IGNITION
SWITCH ON."

AWD warning lamp does not
go out several seconds after
engine is started. (AWD
LOCK indicator lamp goes
out)

Engine running

●

AWD control unit connector disconnected

●

Malfunction in AWD system.

●

Malfunction of unified meter control unit.

●

AWD control unit does not receive the CAN Com-
munication signal from the unified meter and A/C
amp..

TF-66, "AWD WARNING
LAMP DOES NOT GO OUT
SEVERAL SECONDS
AFTER ENGINE
STARTED.(AWD LOCK
INDICATOR LAMP GOES
OUT.)"

Heavy tight-corner braking
symptom occurs when vehi-
cle is driven in the following
conditions: AUTO mode and
steering wheel is turned fully
to either sides after engine is
started. (Note 1, Note 2)

●

Engine run-
ning

●

AUTO mode

●

Steering
wheel fully
turned

●

AUTO mode does not operate. (LOCK mode
operate.)

●

Throttle position signal error.

●

Mechanical malfunction of electric controlled cou-
pling.

●

Malfunction in AWD system.

TF-66, "HEAVY TIGHT-
CORNER BRAKING SYMP-
TOM OCCURS WHEN THE
VEHICLE IS DRIVEN IN
AUTO MODE AND THE
STEERING WHEEL IS
TURNED FULLY TO
EITHER SIDE AFTER THE
ENGINE IS STARTED."

AWD mode cannot be
switched after engine is
started.(Note 3)

Engine running

●

AWD lock switch disconnected

●

Open circuit between AWD lock switch and unified
meter and A/C amp..

●

Open circuit between AWD lock switch and
ground.

●

Malfunction of unified meter control unit.

●

AWD control unit does not receive the CAN Com-
munication signal from the unified meter and A/C
amp..

TF-68, "AWD MODE CAN-
NOT BE SWITCHED AFTER
ENGINE IS STARTED."

While driving, AWD warning
lamp flashes rapidly. (When
it flashes for approximately 1
minute, then does not illumi-
nate) Rapid flashing: Two
times flashing per 1 second.

Engine running

Protection function was activated due to heavy load
to electric controlled coupling. (AWD system is not
malfunctioning)

TF-68, "WHILE DRIVING,
AWD WARNING LAMP
FLASHES RAPIDLY. (WHEN
IT FLASHES FOR APPROX.
ONE MINUTE, THEN DOES
NOT ILLUMINATE.)"

TROUBLE DIAGNOSIS

TF-51

Revision; 2004 April

2003 Murano

NOTE:

1. Light tight-corner braking symptom may occur depending on driving conditions in AUTO mode. This is not malfunction.

2. Heavy tight-corner braking symptom occurs when vehicle is driven in the following conditions: LOCK mode, steering wheel is

turned fully to either sides, and accelerator pedal was depressed.

3. When the difference of revolution speed between the front and rear wheel with AUTO mode the shift occasionally changes to

LOCK mode automatically. This is not malfunction.

AWD Control Unit Input/Output Signal Reference Value

ADS000H3

AWD CONTROL UNIT CONNECTOR TERMINAL LAYOUT

REFERENCE STANDARD TABLE
Specifications Between AWD Control Unit Terminals

Data are reference value and are measured between each terminal and ground.

CAUTION:

When using a circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminals.

While driving, AWD warning
lamp flashes slowly. (when it
continues flashing until
engine stop)
Slow flashing: One flashing
per 2 seconds.

●

Engine run-
ning

●

Driving at
vehicle
speed
20 km/h
(12 MPH)

Tire size is different between front and rear of vehi-
cle.

TF-68, "WHILE DRIVING,
AWD WARNING LAMP
FLASHES SLOWLY. (WHEN
IT CONTINUES TO ILLUMI-
NATE UNTIL ENGINE
TURNS OFF.)"

Vehicle does not enter AWD
mode cannot be switched
even though AWD warning
lamp is OFF.

Engine running

Mechanical malfunction of electric controlled cou-
pling. (Mechanical engagement of clutch is not pos-
sible.)

TF-69, "VEHICLE DOES
NOT ENTER AWD MODE
EVEN THOUGH AWD
WARNING LAMP IS OFF."

Symptom

Condition

Check items

Reference page

SDIA1492E

Terminal

Wire

color

Item

Condition

Data (Approx.)

AWD solenoid (+)

●

Engine running

●

LOCK mode

When releasing accelerator pedal.

After warming up engine, depress
accelerator pedal slowly.

Voltage rises gradu-
ally in response to
throttle position.

L/W

AWD solenoid (-)

Engine idling

K-LINE (CONSULT-II signal)

—

Power supply

Ignition switch: “ON”

Battery voltage

Ignition switch: “OFF”

CAN communication H line

—

G/R

Solenoid battery

Ignition switch: “ON”

Battery voltage

Ignition switch: “OFF”

Battery voltage

Ground

Always

CAN communication L line

—

TF-52

TROUBLE DIAGNOSIS

Revision; 2004 April

2003 Murano

Specifications with CONSULT-II

*1: Check air pressure of tire under normal condition.
*2: Unit name is indicated by the one used in circuit diagram (AWD solenoid valve). However, it is "ETS SOLENOID" in CONSULT-II
data.

Items to be monitored

Contents

Data monitor

Condition

Reference values

FR RH SENSOR (km/h)

Right front wheel speed

When stopping

0 km/h

When running *1

Almost the same as speed
meter indication

FR LH SENSOR (km/h)

Left front wheel speed

When stopping

0 km/h

When running *1

Almost the same as speed
meter indication

RR RH SENSOR (km/h)

Right rear wheel speed

When stopping

0 km/h

When running *1

Almost the same as speed
meter indication

RR LH SENSOR (km/h)

Left rear wheel speed

When stopping

0 km/h

When running *1

Almost the same as speed
meter indication

BATTERY VOLT (V)

Battery voltage supplied to con-
trol unit

Ignition switch ON

Approx. 10 - 16 V

THRTL POS SEN (%)

Throttle valve open/close condi-
tion

When depressing accelerator pedal

0 - 100%
(Value rises gradually in
response to throttle posi-
tion.)

ETS SOLENOID (A) *2

AWD solenoid valve condition
of electric current value monitor

LOCK mode, when enjine running
(Accelerator pedal depressed)

Approx. 2.0 A

STOP LAMP SW (ON/OFF)

Condition of brake pedal opera-
tion

Brake pedal depressed

Brake pedal without depressed

OFF

ENG SPEED SIG (STOP/
RUN)

With engine running

Engine speed below 400 rpm

STOP

Engine speed 400 rpm or higher

RUN

ETS ACTUATOR (ON/OFF)

AWD actuator relay (integrated
in AWD control unit) activation
condition

Engine stop (Ignition switch ON)

OFF

Engine running

4WD WARN LAMP (ON/
OFF)

AWD warning lamp condition

AWD warning lamp ON

AWD warning lamp OFF

OFF

4WD MODE SW (AUTO,
LOCK)

Input condition of AWD lock
switch

Engine running, vehicle stopped,
AWD lock switch ON

LOCK

Engine running, vehicle stopped,
AWD lock switch OFF

AUTO

4WD MODE MON (AUTO,
LOCK)

Input condition of AWD LOCK
indicator lamp signal

Engine running, vehicle stopped

Using AWD lock switch

DIS-TIRE MONI (mm)

Improper size tire installed con-
dition

Normal size tire installed

0 - 4 mm

Front/rear tire size difference, wear
condition

4 - 8 mm, 8 - mm

P BRAKE SW (ON/OFF)

Parking brake switch operating
condition

Parking brake operated

Parking brake not operated

OFF

TROUBLE DIAGNOSIS

TF-53

Revision; 2004 April

2003 Murano

CONSULT-II Functions

ADS000H4

FUNCTION

CONSULT-II FUNCTION APPLICATION TABLE

SELF-DIAGNOSIS
Operation Procedure

●

For details, refer to the separate "CONSULT-II OPERATION MANUAL".

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.

Turn the ignition switch to OFF.

Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector on vehicle.

Start engine and drive at approx. 30 km/h(19MPH) for approx. 1
minute.

Stop vehicle. With engine at idle, touch "START (NISSAN
BASED VHCL)", "ALL MODE AWD/4WD*" and "SELF-DIAG
RESULTS" on CONSULT-II screen in this order.
*: System may be indicated as "ALL MODE AWD/4WD" depend-
ing on the version of CONSULT-II software.

CAUTION:

“ALL MODE AWD/4WD” may not be displayed on the system selection screen in the following
case: When “START (NISSAN BASED VHCL)” was touched just after engine is started or ignition
switch is turned to ON. In this case, repeat procedure from step 1.
If "ALL MODE AWD/4WD" is not detected, go to

GI-38, "CONSULT-II Data Link Connector (DLC)

Circuit"

Diagnostic test mode

Function

Reference

page

Self-diagnostic results

●

Self-diagnostic results can be read and erased quickly.

TF-53

Data monitor

●

Input/Output data in the AWD control unit can be read.

TF-54

CAN diagnostic support monitor

●

The results of transmit/receive diagnosis of CAN communication can be read.

—

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-56

ECU part number

●

AWD control unit part number can be read.

TF-56

Item

Self-diagnosis

Data monitor

FR RH SENSOR

FR LH SENSOR

RR RH SENSOR

RR LH SENSOR

BATTERY VOLT

THRTL POS SEN

ETS SOLENOID

STOP LAMP SW

ENG SPEED SIG

ETS ACTUATOR

4WD WARN LAMP

4WD MODE SW

4WD MODE MON

DIS-TIRE MONI

P BRAKE SW

PAIA0070E

TF-54

TROUBLE DIAGNOSIS

Revision; 2004 April

2003 Murano

“DTC RESULT” is displayed. (If necessary, touch "PRINT" to
print self-diagnostic results.)

●

If "NO DTC IS DETECTED. FURTHER TESTING MAY BE
REQUIRED." is displayed. Check AWD warning lamp.

Check the malfunctioning part indicated by the chart to repair or
replace. Refer to

TF-54, "Display Item List"

Start engine and drive at approx. 30 km/h (19 MPH) for approx.
1 minute.

CAUTION:

●

Check again to make sure that there is “NO FAILURE” on
other parts.

●

If AWD warning lamp is turned ON because of "ABS SYSTEM" incident, AWD warning lamp may
not be turned OFF. In this case, turn OFF the key switch, restart engine, run vehicle at 30 km/h
(19 MPH) for 1 minute.

Turn the ignition switch to OFF prepare for erasing memory.

Start engine. Touch "START (NISSAN BASED VHCL)", "ALL MODE AWD/4WD", "SELF-DIAG
RESULTS," and "ERASE" on CONSULT-II screen in this order to erase fault memory.

CAUTION:

If memory cannot be erased, proceed to 6.

10. Drive at approx. 30 km/h (19 MPH) for approx. 1 minute. Be sure AWD warning lamp is OFF. And turn ON-

OFF AWD lock switch, make sure that AWD LOCK indicator lamp in the meter changes properly.

Display Item List

CAUTION:

●

If "ALL MODE AWD/4WD" is not displayed on system selection screen, check the following: AWD CONTROL UNIT, data
link connector harness, and No. of CONSULT-II program card.

●

When several systems including CAN communication system indicates troubles, perform trouble diagnosis of the CAN
communication primarily.

DATA MONITOR
Operation Procedure

●

For details, refer to the separate "CONSULT-II OPERATION MANUAL".

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.

SDIA1497E

Item

Malfunction detecting condition

Check parts

CONTROLLER FAILURE

Malfunction of AWD control unit

Check or replace AWD control unit.

ABS SYSTEM

Non-standard condition of wheel speed signal

●

Check ABS actuator and electric unit
(control unit) connector.

●

Check wheel sensor connector.

●

Check wheel sensor harness.

●

Check or replace ABS actuator and
electric unit (control unit).

4WD SOLENOID

●

Malfunction AWD solenoid, or open or short circuit in har-
ness

●

Malfunction of AWD control unit

●

Check AWD control unit connector.

●

Check AWD solenoid harness.

●

Check or replace AWD control unit.

4WD ACTUATOR RLY

Malfunction of AWD actuator relay (integrated in AWD con-
trol unit)

●

Check AWD control unit connector.

●

Check or replace AWD control unit.

CAN COMM CIRCUIT

●

Malfunction of CAN communication line

●

Malfunction of AWD control unit

●

Malfunction of ECM

●

Malfunction of ABS actuator and electric unit (control
unit)

●

Malfunction of unified meter and A/C amp.

●

Check connector and harness of each
control unit.

●

Check each control unit.

TROUBLE DIAGNOSIS

TF-55

Revision; 2004 April

2003 Murano

Turn the ignition switch to OFF.

Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector on vehicle.

Turn ignition switch ON.

Touch "START" on the display.

Touch "ALL MODE AWD/4WD*" on the display.
*: System may be indicated as "ALL MODE AWD/4WD" depend-
ing on the version of CONSULT-II software.

CAUTION:

“ALL MODE AWD/4WD” may not be displayed on the sys-
tem selection screen in the following case: When “START
(NISSAN BASED VHCL)” was touched just after engine is started or ignition switch is turned to
ON. In this case, repeat procedure from step 1.
If "ALL MODE AWD/4WD" is not detected, go to

GI-38, "CONSULT-II Data Link Connector (DLC)

Circuit"

Touch "DATA MONITOR".

Return to monitor item selection screen. Touch any of "ECU
INPUT SIGNALS," "MAIN SIGNALS," or "SELECTION FROM
MENU".
Refer to

TF-55, "Display Item List"

Touch "START".

Screen of data monitor is displayed.

Display Item List

: Standard

–: Not applicable

PAIA0070E

PDIA0564J

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/LOCK]

–

AWD lock switch signal status via CAN
communication line is displayed.

TF-56

TROUBLE DIAGNOSIS

Revision; 2004 April

2003 Murano

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.

Component Inspection

ADS000H5

AWD SOLENOID VALVE

●

Disconnect connector B204 and measure resistance between
terminals 1 (LG) and 2 (L/W).

4WD MODE MON [AUTO/LOCK]

–

Control status of AWD is displayed.
(Output condition of AWD LOCK indicator
lamp signal)

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]

–

Monitored item (Unit)

Monitor item selection

Remarks

ECU INPUT

SIGNALS

MAIN

SIGNALS

SELECTION

FROM MENU

Test item

Condition

Description

ETS S/V
(Detects AWD solenoid valve)

●

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

1 (LG) - 2 (L/W)

: Approx. 2.45

Ω

SDIA1552E

TROUBLE DIAGNOSIS

TF-57

Revision; 2004 April

2003 Murano

System Inspection

ADS000H6

CAUTION:

●

After inspection, be sure to perform self-diagnosis again and make sure that there in no incidents
in the result.

●

After diagnosis, be sure to erase the memory. When erasing the memory, make sure that AWD
Lock Indicator Lamp in the Meter Panel changes according to the switch position by operating
AWD Lock Switch.

CONTROL UNIT POWER SUPPLY AND GROUND

CHECK POWER SUPPLY

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

Check voltage between AWD control unit terminals and ground.

Turn ignition switch “OFF”.

Check voltage between AWD control unit terminals and ground.

OK or NG

>> GO TO 3.

>> GO TO 2.

DETECT MALFUNCTIONING ITEM

Check the following:

●

10A fuse [No. 37, located in the fuse and fusible link block or No. 88, located in the IPDM E/R]

●

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

●

Harness for short or open between ignition switch and AWD control unit terminal 7

●

Ignition switch. Refer to

PG-3, "POWER SUPPLY ROUTING CIRCUIT"

OK or NG

>> GO TO 3.

>> Repair or replace damaged parts.

CHECK GROUND CIRCUIT

Turn ignition switch “OFF”.

Disconnect AWD control unit harness connector.

Check continuity between AWD control unit E111 terminals 10
(B), 11 (B) and ground.

If OK, check harness for short to ground and short to power.

OK or NG

>> INSPECTION END

>> Repair open circuit or short to ground or short to power

in harness or connectors.

Connector

Terminal (Wire color)

Voltage (Approx.)

E111

7 (G/R) - Ground

Battery voltage

9 (G/R) - Ground

Connector

Terminal (Wire color)

Voltage (Approx.)

E111

7 (G/R) - Ground

9 (G/R) - Ground

Battery voltage

SDIA1851E

Continuity should exist.

SDIA1852E

TF-58

TROUBLE DIAGNOSIS

Revision; 2004 April

2003 Murano

AWD CONTROL UNIT SYSTEM

PERFORM SELF-DIAGNOSIS

WITH CONSULT-II

Perform the self-diagnosis. Is a malfunction in the “CONTROLLER FAILREN” indication in the results?

YES or NO

YES

>> GO TO 2.

>> 1. Drive vehicle at 30 km/h (19 MPH) for at least 1 minute. Make sure AWD warning lamp does

not turn ON.

2. INSPECTION END

AWD CONTROL UNIT CONNECTOR INSPECTION

Disconnect the AWD control unit connector.

Check that terminals are not deformed and the connectors were connected properly.

OK or NG

>> Replace AWD control unit.

>> Repair or replace the connectors.

ABS SYSTEM

PERFORM SELF-DIAGNOSIS

WITH CONSULT-II

Perform the self-diagnosis. Is a malfunction in the “ABS SYSTEM” indication in the results?

YES or NO

YES

>> GO TO 2.

>> 1. Drive vehicle at 30 km/h (19 MPH) for at least 1 minute. Make sure AWD warning lamp does

not turn ON.

2. INSPECTION END

CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

Refer to

BRC-31, "TROUBLE DIAGNOSIS"

(ABS SYSTEM) or

BRC-98, "TROUBLE DIAGNOSIS"

(VDC/

TCS/ABS SYSTEM).

OK or NG

>> GO TO 3.

>> Check the malfunctioning system.

AWD CONTROL UNIT CONNECTOR INSPECTION

Disconnect the AWD control unit connector.

Check that terminals are not deformed and the connectors were connected properly.

OK or NG

>> INSPECTION END

>> Repair or replace the connectors.

TROUBLE DIAGNOSIS

TF-59

Revision; 2004 April

2003 Murano

AWD ACTUATOR SYSTEM

PERFORM SELF-DIAGNOSIS

WITH CONSULT-II

Perform the self-diagnosis. Is a malfunction in the “4WD ACTUATOR RLY” indication in the results?
YES or NO

YES

>> GO TO 2.

>> 1. Drive vehicle at 30 km/h (19 MPH) for at least 1 minute. Make sure AWD warning lamp does

not turn ON.

2. INSPECTION END

AWD CONTROL UNIT CONNECTOR INSPECTION

Disconnect the AWD control unit connector.

Check that terminals are not deformed and the connectors were connected properly.

OK or NG

>> Replace AWD control unit.

>> Repair or replace the connectors.

AWD WARNING LAMP SYSTEM

CHECK CAN COMMUNICATION LINE

Perform the self-diagnosis. Is a malfunction in the “CAN COMM CIRCUIT” indication in the results?

YES or NO

YES

>> Check the CAN communication line. Refer to

TF-63, "CAN COMMUNICATION SYSTEM"

>> GO TO 2.

CHECK AWD WARNING LAMP

Check if AWD warning lamp turns on when ignition switch is turned on.

OK or NG

>> INSPECTION END

>> Check the combination meters. Refer to

DI-4, "COMBINATION METERS"

AWD LOCK SWITCH SIGNAL CIRCUIT

CHECK CAN COMMUNICATION LINE

Perform the self-diagnosis. Is a malfunction in the “CAN COMM CIRCUIT” indication in the results?

YES or NO

YES

>> Check the CAN communication line. Refer to

TF-63, "CAN COMMUNICATION SYSTEM"

>> GO TO 2.

TF-60

TROUBLE DIAGNOSIS

Revision; 2004 April

2003 Murano

CHECK AWD LOCK SWITCH SIGNAL

WITH CONSULT-II

Turn ignition switch “ON”.

Select “ALL MODE AWD/4WD” with “DATA MONITOR” mode in CONSULT-II.

Is it the same as "4WD MODE SW" indication when operating
switch?

YES or NO

YES

>> INSPECTION END

>> GO TO 3.

CHECK AWD LOCK SWITCH

Turn ignition switch “OFF”.

Disconnect AWD lock switch connector.

Check continuity between AWD lock switch connector M55 ter-
minals 1and 3.

OK or NG

>> GO TO 4.

>> Repair AWD lock switch.

CHECK AWD LOCK SWITCH POWER SUPPLY

Turn ignition switch “ON”.

Check the voltage between the AWD lock switch connector M55
terminal 1(BR/Y) and ground.

OK or NG

>> GO TO 5.

>> GO TO 6.

SDIA1499E

Switch position

Continuity

LOCK

Yes

AUTO

SDIA1849E

1 (BR/Y) - Ground

: Approx. 4V

SDIA1500E

TROUBLE DIAGNOSIS

TF-61

Revision; 2004 April

2003 Murano

CHECK GROUND CIRCUIT

Turn ignition switch “OFF”.

Check continuity between the AWD lock switch connector M55
terminal 3 (B) and ground.

OK or NO

>> Check the unified meter and A/C amp. Refer to

DI-32,

"UNIFIED METER AND A/C AMP"

>> Repair or replace the harness or connectors.

CHECK POWER SOURCE CIRCUIT

Turn ignition switch “OFF”.

Disconnect unified meter and A/C amp. connector.

Check the continuity between the following terminals.

–

Unified meter and A/C amp. harness connector M49 terminal 5
(BR/Y) and AWD lock switch harness connector M55 terminal 1
(BR/Y).

>> Check the unified meter and A/C amp. Refer to

DI-32,

"UNIFIED METER AND A/C AMP"

>> Repair or replace the harness or connectors.

AWD SOLENOID SYSTEM

PERFORM SELF-DIAGNOSIS

WITH CONSULT-II

Perform the self-diagnosis. Is a malfunction in the “AWD SOLENOID” indication in the results?
YES or NO

YES

>> GO TO 2.

>> 1. Drive vehicle at 30 km/h (19 MPH) for at least 1 minute. Make sure AWD warning lamp does

not turn ON.

2. INSPECTION END

3 (B) - Ground

: Continuity should exist.

SDIA1604E

5 (BR/Y) - 1 (BR/Y)

: Continuity should exist.

SDIA1503E

TF-62

TROUBLE DIAGNOSIS

Revision; 2004 April

2003 Murano

CHECK INPUT SIGNAL

WITH CONSULT-II

Turn ignition switch “ON”.

Select “ALL MODE AWD/4WD” with “DATA MONITOR” mode in CONSULT-II.

While monitoring the AWD solenoid items "ETS SOLENOID".

OK or NG

>> INSPECTION END

>> GO TO 3.

CHECK AWD SOLENOID

Turn ignition switch “OFF”.

Disconnect the AWD solenoid valve connector B204.

Measure resistance between terminals 1 and 2.

OK or NG

>> GO TO 4.

>> Replace AWD solenoid.

CHECK AWD SOLENOID CIRCUIT

Disconnect the AWD control unit connector and the AWD solenoid valve connector.

Check the continuity between the following terminals.

–

AWD control unit harness connector E111 terminal 1 (LG) and
AWD solenoid valve harness connector B204 terminal 1 (LG).

–

AWD control unit harness connector E111 terminal 2 (L/W) and
AWD solenoid valve harness connector B204 terminal 2 (L/W).

OK or NG

>> Check Battery and AWD control unit harness connector

E111 terminal No. 9 (G/R). If NG, Repair or replace the
parts.

>> Repair or replace the harness or connectors.

Condition

Specification

Ignition switch

AWD lock switch

Accelerator pedal

LOCK

Accelerator pedal
depressed

Approx.2.0A

SDIA1553E

1 - 2

: Approx. 2.45

Ω

SDIA1552E

1 (LG) - 1 (LG), 2 (L/W) - 2 (L/W)

: Continuity should exist.

SDIA1608E

TROUBLE DIAGNOSIS

TF-63

Revision; 2004 April

2003 Murano

CAN COMMUNICATION SYSTEM

CHECK CAN COMMUNICATION CIRCUIT

With CONSULT-II

Turn ignition switch “ON” and start engine.

Select “ALL MODE AWD/4WD” with “SELF-DIAG RESULTS” mode in CONSULT-II.

The “CAN COMM CIRCUIT” is detected.

YES or NO?

YES

>> Refer to

LAN-10, "Precautions When Using CONSULT-

II"

>> INSPECTION END

SDIA1850E

Nissan Murano Z50 (2003 year). Manual - part 278