Nissan Murano. Manual - part 506

 

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Nissan Murano. Manual - part 506

 

 

EC-134

< SYSTEM DESCRIPTION >

[VQ35DE]

DIAGNOSIS SYSTEM (ECM)

RESUME/ACC SW

ON/OFF

• Indicates [ON/OFF] condition from RESUME/AC-

CELERATE 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 or ASCD clutch switch.

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 decreased to excessively 
low compared with the ASCD set speed, and 
ASCD operation is cut off.

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, and ASCD operation is cut off.

AT OD MONITOR

ON/OFF

• Indicates [ON/OFF] condition of CVT O/D ac-

cording to the input signal from the TCM.

AT OD CANCEL

ON/OFF

• Indicates [ON/OFF] condition of CVT O/D cancel 

request signal.

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 deter-

mined by the ECM according to the input signals.

BAT CUR SEN

mV

• The signal voltage of battery current sensor is 

displayed.

ALT DUTY SIG

ON/OFF

• The control condition of the power generation 

voltage variable control (determined by ECM ac-
cording to the input signals) is indicated.
ON: Power generation voltage variable control is 
active.
OFF: Power generation voltage variable control 
is inactive.

A/F ADJ-B1

• Indicates the correction of a factor stored in ECM. 

The factor is calculated from the difference be-
tween the target air-fuel ratio stored in ECM and 
the air-fuel ratio calculated from A/F sensor 1 sig-
nal.

A/F ADJ-B2

ALT DUTY

%

• Indicates the duty ratio of the power generation 

command value. The ratio is calculated by ECM 
based on the battery current sensor signal.

HO2 S2 DIAG1 (B1)

INCMP/CM-

PLT

• Indicates DTC P0139 self-diagnosis (delayed re-

sponse) condition.
INCMP: Self-diagnosis is incomplete.
CMPLT: Self-diagnosis is complete.

HO2 S2 DIAG1 (B2)

INCMP/CM-

PLT

• Indicates DTC P0159 self-diagnosis (delayed re-

sponse) condition.
INCMP: Self-diagnosis is incomplete.
CMPLT: Self-diagnosis is complete.

HO2 S2 DIAG2 (B1)

INCMP/CM-

PLT

• Indicates DTC P0139 self-diagnosis (slow re-

sponse) condition.
INCMP: Self-diagnosis is incomplete.
CMPLT: Self-diagnosis is complete.

Monitored item

Unit

Description

Remarks

DIAGNOSIS SYSTEM (ECM)

EC-135

< SYSTEM DESCRIPTION >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

*: The item is indicated, but not used.
NOTE:

HO2 S2 DIAG2 (B2)

INCMP/CM-

PLT

• Indicates DTC P0159 self-diagnosis (slow re-

sponse) condition.
INCMP: Self-diagnosis is incomplete.
CMPLT: Self-diagnosis is complete.

A/F SEN1 DIAG1(B1)

INCMP/CM-

PLT

• Indicates DTC P015A or P015B self-diagnosis 

condition.
INCMP: Self-diagnosis is incomplete.
CMPLT: Self-diagnosis is complete.

A/F SEN1 DIAG1(B2)

INCMP/CM-

PLT

• Indicates DTC P015C or P015D self-diagnosis 

condition.
INCMP: Self-diagnosis is incomplete.
CMPLT: Self-diagnosis is complete.

A/F SEN1 DIAG2(B1)

INCMP/CM-

PLT

• Indicates DTC P014C or P014D self-diagnosis 

condition.
INCMP: Self-diagnosis is incomplete.
CMPLT: Self-diagnosis is complete.

A/F SEN1 DIAG2(B2)

INCMP/CM-

PLT

• Indicates DTC P014E or P014F self-diagnosis 

condition.
INCMP: Self-diagnosis is incomplete.
CMPLT: Self-diagnosis is complete.

A/F SEN1 DIAG3(B1)

ABSNT/

PRSNT

• Indicates DTC P014C, P014D, P015A or P015B 

self-diagnosis condition.
ABSNT: The vehicle condition is not within the di-
agnosis range.
PRSNT: The vehicle condition is within the diag-
nosis range.

A/F SEN1 DIAG3(B2)

ABSNT/

PRSNT

• Indicates DTC P014C, P014D, P015A or P015B 

self-diagnosis condition.
ABSNT: The vehicle condition is not within the di-
agnosis range.
PRSNT: The vehicle condition is within the diag-
nosis range.

THRTL STK CNT B1*

EVAP LEAK DIAG

YET/CMPLT

• Indicates the condition of EVAP leak diagnosis.
- YET: EVAP leak diagnosis has not been per-

formed yet.

- CMPLT: EVAP leak diagnosis has been per-

formed successfully.

EVAP DIAG READY

ON/OFF

• Indicates the ready condition of EVAP leak diag-

nosis.

- ON: Diagnosis has been ready condition.
- OFF: Diagnosis has not been ready condition.

A/F-S ATMSPHRC 
CRCT B1

Displays a determined value of atmospheric correc-
tion factor necessary for correcting an A/F sensor 
signal input to ECM. The signal used for the correc-
tion is an A/F sensor signal transmitted while driving 
under atmospheric pressure.

A/F-S ATMSPHRC 
CRCT B2

Displays a determined value of atmospheric correc-
tion factor necessary for correcting an A/F sensor 
signal input to ECM. The signal used for the correc-
tion is an A/F sensor signal transmitted while driving 
under atmospheric pressure.

A/F-S ATMSPHRC 
CRCT UP B1

count

Displays the number of updates of the A/F sensor 
atmospheric correction factor.

A/F-S ATMSPHRC 
CRCT UP B2

count

Displays the number of updates of the A/F sensor 
atmospheric correction factor.

Monitored item

Unit

Description

Remarks

EC-136

< SYSTEM DESCRIPTION >

[VQ35DE]

DIAGNOSIS SYSTEM (ECM)

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

WORK SUPPORT MODE

Work Item

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

ACTIVE TEST MODE

Test Item

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 mixture ratio self-
learning value

EXH V/T CONTROL LEARN

• IN THIS MODE, OPERATION TO LEARN EXHAUST 

VALVE TIMING CONTROL MAGNET RETARDER CHAR-
ACTERISTIC.

When learning the exhaust valve 
timing control

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 
WILL DISCONTINUE IT AND DISPLAY APPROPRIATE 
INSTRUCTION.
NOTE:
WHEN STARTING ENGINE, CONSULT MAY DISPLAY 
“BATTERY VOLTAGE IS LOW. CHARGE BATTERY”, 
EVEN WHEN IN USING A CHARGED BATTERY.

When detecting EVAP vapor leak-
age in the EVAP system

VIN REGISTRATION

• IN THIS MODE, VIN IS REGISTERED IN ECM.

When registering VIN in ECM

TARGET IDLE RPM ADJ*

• IDLE CONDITION

When setting target idle speed

TARGET IGN TIM ADJ*

• IDLE CONDITION

When adjusting target ignition tim-
ing

CLSD THL POS LEARN

• IGNITION ON AND ENGINE STOPPED.

When learning the throttle valve 
closed position

SAVING DATA FOR REPLC CPU

In this mode, save data that is in ECM.

When ECM is replaced.

WRITING DATA FOR REPLC CPU

In this mode, write data stored by “SAVE DATA FOR CPU 
REPLC” in work support mode to ECM.

When ECM is replaced.

DIAGNOSIS SYSTEM (ECM)

EC-137

< SYSTEM DESCRIPTION >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

TEST ITEM

CONDITION

JUDGMENT

CHECK ITEM (REMEDY)

FUEL INJEC-
TION

• Engine: Return to the original 

non-standard condition

• Change the amount of fuel injec-

tion using CONSULT.

If malfunctioning symptom disap-
pears, see CHECK ITEM.

• Harness and connectors
• Fuel injector
• Air fuel ratio (A/F) sensor 1

IGNITION TIM-
ING

• Engine: Return to the original 

non-standard condition

• Timing light: Set
• Retard the ignition timing using 

CONSULT.

If malfunctioning symptom disap-
pears, see CHECK ITEM.

• Perform Idle Air Volume Learning.

POWER BAL-
ANCE

• Engine: After warming up, idle the 

engine.

• A/C switch OFF
• Selector lever: P or N position
• Cut off each injector signal one at 

a time using CONSULT.

Engine runs rough or stops.

• Harness and connectors
• Compression
• Fuel injector
• Power transistor
• Spark  plug
• Ignition coil

COOLING FAN*

• Ignition switch: ON
• Turn the cooling fan “HI”, “MID”, 

“LOW” and “OFF” using CON-
SULT.

Cooling fan moves and stops.

• Harness and connectors
• Cooling fan motor
• IPDM  E/R

ENG COOLANT 
TEMP

• Engine: Return to the original 

non-standard condition

• Change the engine coolant tem-

perature using CONSULT.

If malfunctioning symptom disap-
pears, see CHECK ITEM.

• Harness and connectors
• Engine coolant temperature sen-

sor

• Fuel injector

FUEL PUMP RE-
LAY

• Ignition switch: ON (Engine 

stopped)

• Turn the fuel pump relay “ON” 

and “OFF” using CONSULT and 
listen to operating sound.

Fuel pump relay makes the operat-
ing sound.

• Harness and connectors
• Fuel pump relay

VIAS S/V-1

• Ignition switch: ON
• Turn solenoid valve “ON” and 

“OFF” using CONSULT and listen 
to operating sound.

Solenoid valve makes the operating 
sound.

• Harness and connectors
• Solenoid valve

VIAS S/V-2

• Ignition switch: ON
• Turn solenoid valve “ON” and 

“OFF” using CONSULT and listen 
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 
CONSULT.

Electronic controlled engine mount 
makes the operating sound.

• Harness and connectors
• Electronic controlled engine mount

PURG VOL 
CONT/V

• Engine: After warming up, run en-

gine at 1,500 rpm.

• Change the EVAP canister purge 

volume control solenoid valve 
opening percent using CON-
SULT.

Engine speed changes according to 
the opening percent.

• Harness and connectors
• Solenoid valve

FUEL/T TEMP 
SEN

• Change the fuel tank temperature using CONSULT.

VENT CON-
TROL/V

• Ignition switch: ON (Engine 

stopped)

• Turn solenoid valve “ON” and 

“OFF” with the CONSULT and lis-
ten to operating sound.

Solenoid valve makes an operating 
sound.

• Harness and connectors
• Solenoid valve

 

 

 

 

 

 

 

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