Nissan Murano Z50 (2006 year). Manual

TROUBLE DIAGNOSIS

EC-107

Revision: 2006 August

2006 Murano

40
41
42

R/G
L/Y
W/L

Fuel injector No. 6
Fuel injector No. 4
Fuel injector No. 2

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm
at idle.

BATTERY VOLTAGE

(11 - 14V)

[Engine is running]

●

Warm-up condition

●

Engine speed: 2,000 rpm

BATTERY VOLTAGE

(11 - 14V)

GR/L

EVAP canister purge volume
control solenoid valve

[Engine is running]

●

Idle speed

●

Accelerator pedal is not depressed even
slightly, after engine starting.

BATTERY VOLTAGE

(11 - 14V)

[Engine is running]

●

Engine speed is about 2,000 rpm (More
than 100 seconds after starting engine).

BATTERY VOLTAGE

(11 - 14V)

Sensor power supply (Throt-
tle position sensor)

[Ignition switch: ON]

Approximately 5V

G/O

Sensor power supply
(EVAP control system pres-
sure sensor)

[Ignition switch: ON]

Approximately 5V

R/W

Sensor power supply
(Refrigerant pressure sensor)

[Ignition switch: ON]

Approximately 5V

Throttle position sensor 1

[Ignition switch: ON]

●

Engine stopped

●

Shift lever: D

●

Accelerator pedal: Fully released

More than 0.36V

[Ignition switch: ON]

●

Engine stopped

●

Shift lever: D

●

Accelerator pedal: Fully depressed

Less than 4.75V

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

SEC984C

SEC985C

SEC990C

SEC991C

EC-108

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

G/W

Mass air flow sensor

[Engine is running]

●

Warm-up condition

●

Idle speed

0.9 - 1.2V

[Engine is running]

●

Warm-up condition

●

Engine speed: 2,500 rpm

1.6 - 2.0V

Heated oxygen sensor 2
(bank 2)

[Engine is running]

●

Revving engine from idle to 3,000 rpm
quickly after the following conditions are
met

–

Engine: After warming up

–

Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load

0 - Approximately 1.0V

A/F sensor 1 (Bank 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 2.6V

Approximately 2.3V

G/Y

Approximately 3.1V

Approximately 2.3V

60
61
62

BR/R
L/R
Y/R

Ignition signal No. 5
Ignition signal No. 3
Ignition signal No. 1

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm
at idle.

0 - 0.3V

[Engine is running]

●

Warm-up condition

●

Engine speed: 2,500 rpm

0.1 - 0.6V

Sensor ground
(Throttle position sensor)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

Sensor ground

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

W/G

Sensor power supply
(PSP sensor)

[Ignition switch: ON]

Approximately 5V

Throttle position sensor 2

[Ignition switch: ON]

●

Engine stopped

●

Shift lever: D

●

Accelerator pedal: Fully released

Less than 4.75V

[Ignition switch: ON]

●

Engine stopped

●

Shift lever: D

●

Accelerator pedal: Fully depressed

More than 0.36V

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

SEC986C

SEC987C

TROUBLE DIAGNOSIS

EC-109

Revision: 2006 August

2006 Murano

Refrigerant pressure sensor

[Engine is running]

●

Warm-up condition

●

Both A/C switch and blower fan switch are
ON (Compressor operates)

1.0 - 4.0V

Y/B

Engine coolant temperature
sensor

[Engine is running]

Approximately 0 - 4.8V
Output voltage varies with
engine coolant temperature.

Heated oxygen sensor 2
(bank 1)

[Engine is running]

●

Revving engine from idle to 3,000 rpm
quickly after the following conditions are
met

–

Engine: After warming up

–

Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load

0 - Approximately 1.0V

Sensor ground
(Heated oxygen sensor 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

79
80
81

GR/R
GR
G/R

Ignition signal No. 6
Ignition signal No. 4
Ignition signal No. 2

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm
at idle.

0 - 0.3V

[Engine is running]

●

Warm-up condition

●

Engine speed: 2,500 rpm

0.1 - 0.6V

Sensor ground
(APP sensor 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

Sensor ground
(APP sensor 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

Data link connector

[Ignition switch: ON]

●

CONSULT-II or GST: Disconnected

Approximately 5V - Battery volt-
age (11 - 14V)

CAN communication line

[Ignition switch: ON]

Approximately 1.1 - 2.3V
Output voltage varies with the
communication status

R/W

Sensor power supply
(APP sensor 1)

[Ignition switch: ON]

Approximately 5V

Sensor power supply
(APP sensor 2)

[Ignition switch: ON]

Approximately 5V

CAN communication line

[Ignition switch: ON]

Approximately 2.6 - 3.2V
Output voltage varies with the
communication status.

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

SEC986C

SEC987C

EC-110

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

W/R

Accelerator pedal position
sensor 2

[Ignition switch: ON]

●

Engine stopped

●

Accelerator pedal: Fully released

0.25 - 0.5V

[Ignition switch: ON]

●

Engine stopped

●

Accelerator pedal: Fully depressed

2.0 - 2.5V

G/Y

ASCD steering switch

[Ignition switch: ON]

●

ASCD steering switch: OFF

Approximately 4V

[Ignition switch: ON]

●

MAIN switch: Pressed

Approximately 0V

[Ignition switch: ON]

●

CANCEL switch: Pressed

Approximately 1V

[Ignition switch: ON]

●

RESUME/ACCELERATE switch: Pressed

Approximately 3V

[Ignition switch: ON]

●

SET/COAST switch: Pressed

Approximately 2V

101

R/G

Stop lamp switch

[Ignition switch: OFF]

●

Brake pedal: Fully released

Approximately 0V

[Ignition switch: OFF]

●

Brake pedal: Slightly depressed

BATTERY VOLTAGE
(11 - 14V)

102

G/W

PNP switch

[Ignition switch: ON]

●

Shift lever: P or N

Approximately 0V

[Ignition switch: ON]

●

Except above

BATTERY VOLTAGE
(11 - 14V)

104

P/L

Throttle control motor relay

[Ignition switch: OFF]

BATTERY VOLTAGE
(11 - 14V)

[Ignition switch: ON]

0 - 1.0V

106

Accelerator pedal position
sensor 1

[Ignition switch: ON]

●

Engine stopped

●

Accelerator pedal: Fully released

0.5 - 1.0V

[Ignition switch: ON]

●

Engine stopped

●

Accelerator pedal: Fully depressed

4.2 - 4.8V

107

R/Y

Fuel tank temperature sensor

[Engine is running]

Approximately 0 - 4.8V
Output voltage varies with fuel
tank temperature.

108

L/B

ASCD brake switch

[Ignition switch: ON]

●

Brake pedal: Slightly depressed

Approximately 0V

[Ignition switch: ON]

●

Brake pedal: Fully released

BATTERY VOLTAGE
(11 - 14V)

109

Ignition switch

[Ignition switch: OFF]

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

TROUBLE DIAGNOSIS

EC-111

Revision: 2006 August

2006 Murano

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

111

W/B

ECM relay
(Self shut-off)

[Engine is running]
[Ignition switch: OFF]

●

For a few seconds after turning ignition
switch OFF

0 - 1.5V

[Ignition switch: OFF]

●

More than a few seconds after turning igni-
tion switch OFF

BATTERY VOLTAGE
(11 - 14V)

113

B/P

Fuel pump relay

[Ignition switch: ON]

●

For 1 second after turning ignition switch
ON.

[Engine is running]

0 - 1.5V

[Ignition switch: ON]

●

More than 1 second after turning ignition
switch ON.

BATTERY VOLTAGE
(11 - 14V)

115
116

B
B

ECM ground

[Engine is running]

●

Idle speed

Body ground

117

EVAP canister vent control
valve

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

119

120

R/B
R/B

Power supply for ECM

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

121

Power supply for ECM
(Back-up)

[Ignition switch: OFF]

BATTERY VOLTAGE
(11 - 14V)

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

EC-112

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

CONSULT-II Function (ENGINE)

NBS002ZN

FUNCTION

*: The following emission-related diagnostic information is cleared when the ECM memory is erased.

●

Diagnostic trouble codes

●

1st trip diagnostic trouble codes

●

Freeze frame data

●

1st trip freeze frame data

●

System readiness test (SRT) codes

●

Test values

Diagnostic test mode

Function

Work support

This mode enables a technician to adjust some devices faster and more accurately by following the
indications on the CONSULT-II unit.

Self-diagnostic results

Self-diagnostic results such as 1st trip DTC, DTCs and 1st trip freeze frame data or freeze frame data
can be read and erased quickly.*

Data monitor

Input/Output data in the ECM can be read.

Data monitor (SPEC)

Input/Output of the specification for Basic fuel schedule, AFM, A/F feedback control value and the
other data monitor items can be read.

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 ECMs and also
shifts some parameters in a specified range.

Function test

This mode is used to inform customers when their vehicle condition requires periodic maintenance.

DTC & SRT confirmation

The status of system monitoring tests and the self-diagnosis status/result can be confirmed.

ECM part number

ECM part number can be read.

TROUBLE DIAGNOSIS

EC-113

Revision: 2006 August

2006 Murano

ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION

Item

DIAGNOSTIC TEST MODE

WORK

SUP-

PORT

SELF-DIAGNOSTIC

RESULTS

DATA

MONI-

TOR

DATA

MONI-

TOR

(SPEC)

ACTIVE

TEST

DTC & SRT

CONFIRMATION

DTC*

FREEZE
FRAME

DATA*

SRT

STATUS

DTC

WORK

SUP-

PORT

ENGI

NE CONTROL

COMPONENT P

ARTS

INPUT

Crankshaft position sensor (POS)

Camshaft position sensor (PHASE)

Mass air flow sensor

Engine coolant temperature sensor

Air fuel ratio (A/F) sensor 1

Heated oxygen sensor 2

Wheel sensor

Accelerator pedal position sensor

Throttle position sensor

Fuel tank temperature sensor

EVAP control system pressure
sensor

Intake air temperature sensor

Knock sensor

Refrigerant pressure sensor

Closed throttle position switch
(accelerator pedal position sensor
signal)

Air conditioner switch

Park/neutral position (PNP) switch

Stop lamp switch

Power steering pressure sensor

Battery voltage

Load signal

Primary speed sensor

Fuel level sensor

ASCD steering switch

ASCD brake switch

EC-114

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

X: Applicable
*1: This item includes 1st trip DTCs.
*2: This mode includes 1st trip freeze frame data or freeze frame data. The items appear on CONSULT-II screen in freeze frame data
mode only if a 1st trip DTC or DTC is detected. For details, refer to

EC-51

*3: Always “CMPLT” is displayed.

INSPECTION PROCEDURE

Refer to

GI-38, "CONSULT-II Start Procedure"

WORK SUPPORT MODE
Work Item

ENGINE

COMPONENT P

ARTS

OUTPUT

Fuel injector

Power transistor (Ignition timing)

Throttle control motor relay

Throttle control motor

EVAP canister purge volume con-
trol solenoid valve

Air conditioner relay

Fuel pump relay

Cooling fan relay

Air fuel ratio (A/F) sensor 1 heater

Heated oxygen sensor 2 heater

EVAP canister vent control valve

Intake valve timing control solenoid
valve

VIAS control solenoid valve

Electronic controlled engine mount

Calculated load value

Item

DIAGNOSTIC TEST MODE

WORK

SUP-

PORT

SELF-DIAGNOSTIC

RESULTS

DATA

MONI-

TOR

DATA

MONI-

TOR

(SPEC)

ACTIVE

TEST

DTC & SRT

CONFIRMATION

DTC*

FREEZE
FRAME

DATA*

SRT

STATUS

DTC

WORK

SUP-

PORT

WORK ITEM

CONDITION

USAGE

FUEL PRESSURE RELEASE

●

FUEL PUMP WILL STOP BY TOUCHING “START” DUR-
ING IDLING.
CRANK A FEW TIMES AFTER ENGINE STALLS.

When releasing fuel pressure
from fuel line

IDLE AIR VOL LEARN

●

THE IDLE AIR VOLUME THAT KEEPS THE ENGINE
WITHIN THE SPECIFIED RANGE IS MEMORIZED IN
ECM.

When learning the idle air volume

SELF-LEARNING CONT

●

THE COEFFICIENT OF SELF-LEARNING CONTROL
MIXTURE RATIO RETURNS TO THE ORIGINAL COEF-
FICIENT.

When clearing the coefficient of
self-learning control value

TROUBLE DIAGNOSIS

EC-115

Revision: 2006 August

2006 Murano

*: This function is not necessary in the usual service procedure.

SELF-DIAG RESULTS MODE
Self Diagnostic Item

Regarding items of “DTC and 1st trip DTC”, refer to

EC-8, "INDEX FOR DTC"

Freeze Frame Data and 1st Trip Freeze Frame Data

EVAP SYSTEM CLOSE

CLOSE THE EVAP CANISTER VENT CONTROL VALVE IN
ORDER TO MAKE EVAP SYSTEM CLOSE UNDER THE
FOLLOWING CONDITIONS.

●

IGN SW ON

●

ENGINE NOT RUNNING

●

AMBIENT TEMPERATURE IS ABOVE 0

C (32

F).

●

NO VACUUM AND NO HIGH PRESSURE IN EVAP SYS-
TEM

●

FUEL TANK TEMP. IS MORE THAN 0

C (32

F).

●

WITHIN 10 MINUTES AFTER STARTING “EVAP SYS-
TEM CLOSE”

●

WHEN TRYING TO EXECUTE “EVAP SYSTEM CLOSE”
UNDER THE CONDITION EXCEPT ABOVE, CONSULT-
II WILL DISCONTINUE IT AND DISPLAY APPROPRI-
ATE INSTRUCTION.

NOTE:
WHEN STARTING ENGINE, CONSULT-II MAY DISPLAY
“BATTERY VOLTAGE IS LOW. CHARGE BATTERY”,
EVEN IN USING CHARGED BATTERY.

When detecting EVAP vapor leak
point of EVAP system

TARGET IDLE RPM ADJ*

●

IDLE CONDITION

When setting target idle speed

TARGET IGN TIM ADJ*

●

IDLE CONDITION

When adjusting target ignition tim-
ing

VIN REGISTRATION

●

IN THIS MODE VIN IS REGISTERED IN ECM.

When registering VIN in ECM

WORK ITEM

CONDITION

USAGE

Freeze frame data

item*

Description

DIAG TROUBLE
CODE
[PXXXX]

●

The engine control component part/control system has a trouble code, it is displayed as PXXXX. (Refer to

EC-8, "INDEX FOR DTC"

FUEL SYS-B1

●

“Fuel injection system status” at the moment a malfunction is detected is displayed.

●

One mode in the following is displayed.
Mode2: Open loop due to detected system malfunction
Mode3: Open loop due to driving conditions (power enrichment, deceleration enleanment)
Mode4: Closed loop - using oxygen sensor(s) as feedback for fuel control
Mode5: Open loop - has not yet satisfied condition to go to closed loop

FUEL SYS-B2

CAL/LD VALUE [%]

●

The calculated load value at the moment a malfunction is detected is displayed.

COOLANT TEMP [

or [

●

The engine coolant temperature at the moment a malfunction is detected is displayed.

L-FUEL TRM-B1 [%]

●

“Long-term fuel trim” at the moment a malfunction is detected is displayed.

●

The long-term fuel trim indicates much more gradual feedback compensation to the base fuel schedule
than short-term fuel trim.

L-FUEL TRM-B2 [%]

S-FUEL TRM-B1 [%]

●

“Short-term fuel trim” at the moment a malfunction is detected is displayed.

●

The short-term fuel trim indicates dynamic or instantaneous feedback compensation to the base fuel
schedule.

S-FUEL TRM-B2 [%]

ENGINE SPEED
[rpm]

●

The engine speed at the moment a malfunction is detected is displayed.

VEHICL SPEED [km/
h] or [mph]

●

The vehicle speed at the moment a malfunction is detected is displayed.

EC-116

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

*: The items are the same as those of 1st trip freeze frame data.

DATA MONITOR MODE
Monitored Item

: Applicable

ABSOL TH-P/S [%]

●

The throttle valve opening angle at the moment a malfunction is detected is displayed.

B/FUEL SCHDL
[msec]

●

The base fuel schedule at the moment a malfunction is detected is displayed.

INT/A TEMP SE [

or [

●

The intake air temperature at the moment a malfunction is detected is displayed.

Freeze frame data

item*

Description

Monitored item [Unit]

ECM

INPUT

SIG-

NALS

MAIN

SIG-

NALS

Description

Remarks

ENG SPEED [rpm]

●

Indicates the engine speed computed
from the signal of the crankshaft posi-
tion sensor (POS) and camshaft posi-
tion sensor (PHASE).

●

Accuracy becomes poor if engine speed
drops below the idle rpm.

●

If the signal is interrupted while the
engine is running, an abnormal value
may be indicated.

MAS A/F SE-B1 [V]

●

The signal voltage of the mass air flow
sensor is displayed.

●

When the engine is stopped, a certain
value is indicated.

B/FUEL SCHDL
[msec]

●

Base fuel schedule indicates the fuel
injection pulse width programmed into
ECM, prior to any learned on board cor-
rection.

A/F ALPHA-B1 [%]

●

The mean value of the air-fuel ratio
feedback correction factor per cycle is
indicated.

●

When the engine is stopped, a certain
value is indicated.

●

This data also includes the data for the
air-fuel ratio learning control.

A/F ALPHA-B2 [%]

COOLAN TEMP/S [

or [

●

The engine coolant temperature (deter-
mined by the signal voltage of the
engine coolant temperature sensor) is
displayed.

●

When the engine coolant temperature
sensor is open or short-circuited, ECM
enters fail-safe mode. The engine cool-
ant temperature determined by the ECM
is displayed.

A/F SEN1 (B1) [V]

●

The A/F signal computed from the input
signal of the A/F sensor 1 is displayed.

A/F SEN1 (B2) [V]

HO2S2 (B1) [V]

●

The signal voltage of the heated oxygen
sensor 2 is displayed.

HO2S2 (B2) [V]

HO2S2 MNTR (B1)
[RICH/LEAN]

●

Display of heated oxygen sensor 2 sig-
nal:
RICH: means the amount of oxygen
after three way catalyst is relatively
small.
LEAN: means the amount of oxygen
after three way catalyst is relatively
large.

●

When the engine is stopped, a certain
value is indicated.

HO2S2 MNTR (B2)
[RICH/LEAN]

VHCL SPEED SE [km/
h] or [mph]

●

The vehicle speed computed from the
vehicle speed signal sent from combi-
nation meter is displayed.

BATTERY VOLT [V]

●

The power supply voltage of ECM is
displayed.

ACCEL SEN 1 [V]

●

The accelerator pedal position sensor
signal voltage is displayed.

●

ACCEL SEN 2 signal is converteds by
ECM internally. Thus, it differ from ECM
terminal voltage signal.

ACCEL SEN 2 [V]

TROUBLE DIAGNOSIS

EC-117

Revision: 2006 August

2006 Murano

THRTL SEN 1 [V]

●

The throttle position sensor signal volt-
age is displayed.

●

THRTL SEN 2 signal is converteds by
ECM internally. Thus, it differ from ECM
terminal voltage signal.

THRTL SEN 2 [V]

FUEL T/TMP SE [

or [

●

The fuel temperature (determined by
the signal voltage of the fuel tank tem-
perature sensor) is displayed.

INT/A TEMP SE [

or [

●

The intake air temperature (determined
by the signal voltage of the intake air
temperature sensor) is indicated.

EVAP SYS PRES [V]

●

The signal voltage of EVAP control sys-
tem pressure sensor is displayed.

FUEL LEVEL SE [V]

●

The signal voltage of the fuel level sen-
sor is displayed.

START SIGNAL [ON/
OFF]

●

Indicates start signal status [ON/OFF]
computed by the ECM according to the
signals of engine speed and battery
voltage.

●

After starting the engine, [OFF] is dis-
played regardless of the starter signal.

CLSD THL POS [ON/
OFF]

●

Indicates idle position [ON/OFF] com-
puted by ECM according to the acceler-
ator pedal position sensor signal.

AIR COND SIG [ON/
OFF]

●

Indicates [ON/OFF] condition of the air
conditioner switch as determined by the
air conditioner signal.

P/N POSI SW
[ON/OFF]

●

Indicates [ON/OFF] condition from the
park/neutral position (PNP) switch sig-
nal.

PW/ST SIGNAL [ON/
OFF]

●

[ON/OFF] condition of the power steer-
ing system (determined by the signal
voltage of the power steering pressure
sensor signal) is indicated.

LOAD SIGNAL [ON/
OFF]

●

Indicates [ON/OFF] condition from the
electrical load signal.
ON: Rear window defogger switch is
ON and/or lighting switch is in 2nd posi-
tion.
OFF: Both rear window defogger switch
and lighting switch are OFF.

IGNITION SW
[ON/OFF]

●

Indicates [ON/OFF] condition from igni-
tion switch signal.

HEATER FAN SW
[ON/OFF]

●

Indicates [ON/OFF] condition from
heater fan switch signal.

BRAKE SW
[ON/OFF]

●

Indicates [ON/OFF] condition from the
stop lamp switch signal.

INJ PULSE-B1 [msec]

●

Indicates the actual fuel injection pulse
width compensated by ECM according
to the input signals.

●

When the engine is stopped, a certain
computed value is indicated.

INJ PULSE-B2 [msec]

IGN TIMING [BTDC]

●

Indicates the ignition timing computed
by ECM according to the input signals.

●

When the engine is stopped, a certain
value is indicated.

CAL/LD VALUE [%]

●

“Calculated load value” indicates the
value of the current air flow divided by
peak air flow.

Monitored item [Unit]

ECM

INPUT

SIG-

NALS

MAIN

SIG-

NALS

Description

Remarks

EC-118

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

MASS AIRFLOW [g·m/
s]

●

Indicates the mass air flow computed by
ECM according to the signal voltage of
the mass air flow sensor.

PURG VOL C/V [%]

●

Indicates the EVAP canister purge vol-
ume control solenoid valve control value
computed by the ECM according to the
input signals.

●

The opening becomes larger as the
value increases.

INT/V TIM (B1) [

CA]

●

Indicates [

CA] of intake camshaft

advanced angle.

INT/V TIM (B2) [

CA]

INT/V SOL (B1) [%]

●

The control condition of the intake valve
timing control solenoid valve (deter-
mined by ECM according to the input
signals) is indicated.

●

The advance angle becomes larger as
the value increases.

INT/V SOL (B2) [%]

VIAS S/V
[ON/OFF]

●

The control condition of the VIAS con-
trol solenoid valve (determined by ECM
according to the input signals) is indi-
cated.
ON: VIAS control solenoid valve is oper-
ating.
OFF: VIAS control solenoid valve is not
operating.

AIR COND RLY [ON/
OFF]

●

The air conditioner relay control condi-
tion (determined by ECM according to
the input signals) is indicated.

ENGINE MOUNT
[IDLE/TRVL]

●

The control condition of the electronic
controlled engine mount (determined by
ECM according to the input signals) is
indicated.
IDLE: Engine speed: Below 950 rpm
TRVL: Engine speed: Above 950 rpm

FUEL PUMP RLY [ON/
OFF]

●

Indicates the fuel pump relay control
condition determined by ECM according
to the input signals.

VENT CONT/V [ON/
OFF]

●

The control condition of the EVAP can-
ister vent control valve (determined by
ECM according to the input signals) is
indicated.
ON: Closed
OFF: Open

THRTL RELAY [ON/
OFF]

●

Indicates the throttle control motor relay
control condition determined by the
ECM according to the input signals.

COOLING FAN
[HI/LOW/OFF]

●

The control condition of the cooling fan
(determined by ECM according to the
input signals) is indicated.
HI: High speed operation
LOW: Low speed operation
OFF: Stop

Monitored item [Unit]

ECM

INPUT

SIG-

NALS

MAIN

SIG-

NALS

Description

Remarks

TROUBLE DIAGNOSIS

EC-119

Revision: 2006 August

2006 Murano

HO2S2 HTR (B1) [ON/
OFF]

●

Indicates [ON/OFF] condition of heated
oxygen sensor 2 heater determined by
ECM according to the input signals.

HO2S2 HTR (B2) [ON/
OFF]

I/P PULLY SPD
[rpm]

●

Indicates the engine speed computed
from the primary speed sensor signal.

VEHICLE SPEED
[km/h] or [MPH]

●

Indicates the vehicle speed computed
from the secondary speed sensor sig-
nal.

IDL A/V LEARN [YET/
CMPLT]

●

Display the condition of idle air volume
learning
YET: Idle air volume learning has not
been performed yet.
CMPLT: Idle air volume learning has
already been performed successfully.

TRVL AFTER MIL [km]
or [mile]

●

Distance traveled while MIL is activated.

A/F S1 HTR (B1) [%]

●

A/F sensor 1 heater control value com-
puted by ECM according to the input
signals.

●

The current flow to the heater becomes
larger as the value increases.

A/F S1 HTR (B2) [%]

AC PRESS SEN [V]

●

The signal voltage from the refrigerant
pressure sensor is displayed.

VHCL SPEED SE [km/
h] or [mph]

●

The vehicle speed computed from the
vehicle speed signal sent from TCM is
displayed.

SET VHCL SPD
[km/h] or [m.p.h.]

●

The preset vehicle speed is displayed.

MAIN SW
[ON/OFF]

●

Indicates [ON/OFF] condition from
MAIN switch signal.

CANCEL SW
[ON/OFF]

●

Indicates [ON/OFF] condition from
CANCEL switch signal.

RESUME/ACC SW
[ON/OFF]

●

Indicates [ON/OFF] condition from
RESUME/ACCELERATE switch signal.

SET SW
[ON/OFF]

●

Indicates [ON/OFF] condition from SET/
COAST switch signal.

BRAKE SW1
[ON/OFF]

●

Indicates [ON/OFF] condition from
ASCD brake switch signal.

BRAKE SW2
[ON/OFF]

●

Indicates [ON/OFF] condition of stop
lamp switch signal.

VHCL SPD CUT
[NON/CUT]

●

Indicates the vehicle cruise condition.
NON: Vehicle speed is maintained at
the ASCD set speed.
CUT: Vehicle speed increased to exces-
sively high compared with the ASCD set
speed, and ASCD operation is cut off.

Monitored item [Unit]

ECM

INPUT

SIG-

NALS

MAIN

SIG-

NALS

Description

Remarks

EC-120

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

NOTE:

●

Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.

DATA MONITOR (SPEC) MODE
Monitored Item

NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.

LO SPEED CUT
[NON/CUT]

●

Indicates the vehicle cruise condition.
NON: Vehicle speed is maintained at
the ASCD set speed.
CUT: Vehicle speed decreased to
excessively low compared with the
ASCD set speed, and ASCD operation
is cut off.

AT OD MONITOR
[ON/OFF]

●

Indicates [ON/OFF] condition of CVT O/
D according to the input signal from the
TCM.

AT OD CANCEL
[ON/OFF]

●

Indicates [ON/OFF] condition of CVT O/
D cancel signal sent from the TCM.

CRUISE LAMP
[ON/OFF]

●

Indicates [ON/OFF] condition of
CRUISE lamp determined by the ECM
according to the input signals.

SET LAMP
[ON/OFF]

●

Indicates [ON/OFF] condition of SET
lamp determined by the ECM according
to the input signals.

Voltage [V]

●

Voltage, frequency, duty cycle or pulse
width measured by the probe.

●

Only # is displayed if item is unable to be
measured.

●

Figures with #s are temporary ones.
They are the same figures as an actual
piece of data which was just previously
measured.

Frequency [msec],
[Hz] or [%]

DUTY-HI

DUTY-LOW

PLS WIDTH-HI

PLS WIDTH-LOW

Monitored item [Unit]

ECM

INPUT

SIG-

NALS

MAIN

SIG-

NALS

Description

Remarks

Monitored item [Unit]

ECM

INPUT

SIG-

NALS

MAIN

SIG-

NALS

Description

Remarks

ENG SPEED [rpm]

●

Indicates the engine speed computed
from the signal of the crankshaft position
sensor (POS) and camshaft position
sensor (PHASE).

MAS A/F SE-B1 [V]

●

The signal voltage of the mass air flow
sensor specification is displayed.

●

When engine is running specification
range is indicated.

B/FUEL SCHDL
[msec]

●

Base fuel schedule indicates the fuel
injection pulse width programmed into
ECM, prior to any learned on board cor-
rection.

●

When engine is running specification
range is indicated.

A/F ALPHA-B1 [%]
A/F ALPHA-B2 [%]

●

The mean value of the air-fuel ratio feed-
back correction factor per cycle is indi-
cated.

●

When engine is running specification
range is indicated.

●

This data also includes the data for the
air-fuel ratio learning control.

TROUBLE DIAGNOSIS

EC-121

Revision: 2006 August

2006 Murano

ACTIVE TEST MODE
Test Item

TEST ITEM

CONDITION

JUDGEMENT

CHECK ITEM (REMEDY)

FUEL INJEC-
TION

●

Engine: Return to the original
trouble condition

●

Change the amount of fuel injec-
tion using CONSULT-II.

If trouble symptom disappears, see
CHECK ITEM.

●

Harness and connectors

●

Fuel injector

●

Air fuel ratio (A/F) sensor 1

IGNITION TIM-
ING

●

Engine: Return to the original
trouble condition

●

Timing light: Set

●

Retard the ignition timing using
CONSULT-II.

If trouble symptom disappears, see
CHECK ITEM.

●

Perform Idle Air Volume Learning.

POWER BAL-
ANCE

●

Engine: After warming up, idle
the engine.

●

A/C switch: OFF

●

Shift lever: P or N

●

Cut off each fuel injector signal
one at a time using CONSULT-II.

Engine runs rough or dies.

●

Harness and connectors

●

Compression

●

Fuel injector

●

Power transistor

●

Spark plug

●

Ignition coil

COOLING FAN*

●

Ignition switch: ON

●

Turn the cooling fan “HI”, “LOW”
and “OFF” using CONSULT-II.

Cooling fan moves and stops.

●

Harness and connectors

●

Cooling fan motor

●

IPDM E/R

ENG COOLANT
TEMP

●

Engine: Return to the original
trouble condition

●

Change the engine coolant tem-
perature using CONSULT-II.

If trouble symptom disappears, see
CHECK ITEM.

●

Harness and connectors

●

Engine coolant temperature sen-
sor

●

Fuel injector

FUEL PUMP
RELAY

●

Ignition switch: ON (Engine
stopped)

●

Turn the fuel pump relay “ON”
and “OFF” using CONSULT-II
and listen to operating sound.

Fuel pump relay makes the operat-
ing sound.

●

Harness and connectors

●

Fuel pump relay

VIAS SOL VALVE

●

Ignition switch: ON

●

Turn solenoid valve “ON” and
“OFF” using CONSULT-II and lis-
ten to operating sound.

Solenoid valve makes the operating
sound.

●

Harness and connectors

●

Solenoid valve

ENGINE
MOUNTING

●

Ignition switch: ON

●

Turn electronic controlled engine
mount “IDLE” and “TRVL” with
the CONSULT-II.

Electronic controlled engine mount
makes the operating sound.

●

Harness and connectors

●

Electronic controlled engine
mount

PURG VOL
CONT/V

●

Engine: After warming up, run
engine at 1,500 rpm.

●

Change the EVAP canister purge
volume control solenoid valve
opening percent using CON-
SULT-II.

Engine speed changes according to
the opening percent.

●

Harness and connectors

●

Solenoid valve

FUEL/T TEMP
SEN

●

Change the fuel tank temperature using CONSULT-II.

EC-122

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

*: Leaving cooling fan OFF with CONSULT-II while engine is running may cause the engine to overheat.

DTC & SRT CONFIRMATION MODE
SRT STATUS Mode

For details, refer to

EC-51, "SYSTEM READINESS TEST (SRT) CODE"

SRT Work Support Mode

This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.

DTC Work Support Mode

*: DTC P1442 and P1456 does not apply to Z50 models but appears in DTC Work Support Mode screens.

VENT CON-
TROL/V

●

Ignition switch: ON (Engine
stopped)

●

Turn solenoid valve ON and OFF
with the CONSULT-II and listen
to operating sound.

Solenoid valve makes an operating
sound.

●

Harness and connectors

●

Solenoid valve

V/T ASSIGN
ANGLE

●

Engine: Return to the original
trouble condition

●

Change intake valve timing using
CONSULT-II.

If trouble symptom disappears, see
CHECK ITEM.

●

Harness and connectors

●

Intake valve timing control sole-
noid valve

TEST ITEM

CONDITION

JUDGEMENT

CHECK ITEM (REMEDY)

Test mode

Test item

Corresponding DTC No.

Reference page

EVAPORATIVE SYS-
TEM

EVP SML LEAK P0442/P1442*

P0442

EC-392

P0455

EC-447

EVP V/S LEAK P0456/P1456*

P0456

EC-456

PURG VOL CN/V P1444

P0443

EC-401

PURG FLOW P0441

P0441

EC-387

A/F SEN1

A/F SEN1 (B1) P1278/P1279

P0133

EC-260

A/F SEN1 (B1) P1276

P0130

EC-229

A/F SEN1 (B2) P1288/P1289

P0153

EC-260

A/F SEN1 (B2) P1286

P0150

EC-229

HO2S2

HO2S2 (B1) P1146

P0138

EC-284

HO2S2 (B1) P1147

P0137

EC-273

HO2S2 (B1) P0139

P0139

EC-297

HO2S2 (B2) P1166

P0158

EC-284

HO2S2 (B2) P1167

P0157

EC-273

HO2S2 (B2) P0159

P0159

EC-297

Nissan Murano Z50 (2006 year). Manual - part 83