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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