Nissan Pathfinder. Manual - part 440

EC-66

< SYSTEM DESCRIPTION >

[VQ35DE]

DIAGNOSIS SYSTEM (ECM)

HO2S2 HTR (B1)

On/Off

Indicates [On/Off] condition of heat-
ed oxygen sensor 2 heater deter-
mined by ECM according to the 
input signals.

HO2S2 HTR (B2)

ALT DUTY SIG

On/Off

The control condition of the power 
generation voltage variable control 
(determined by ECM according to 
the input signals) is indicated.
• On: Power generation voltage 

variable control is active.

• Off: Power generation voltage 

variable control is inactive.

I/P PULLY SPD

rpm

Indicates the engine speed comput-
ed from the input speed sensor sig-
nal.

VEHICLE SPEED

km/h or 

mph

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

IDL A/V LEARN

Yet/CM-

PLT

Displays the condition of idle air vol-
ume learning
• Yet: Idle Air Volume Learning has 

not been performed yet.

• CMPLT: Idle Air Volume Learning 

has already been performed suc-
cessfully.

TRVL AFTER MIL

km or 

mile

Distance traveled while MIL is acti-
vated.

ENG OIL TEMP

°C or °F

×

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

A/F S1 HTR(B1)

%

• Air fuel ratio (A/F) sensor 1 heater 

control value computed by ECM 
according to the input signals.

• The current flow to the heater be-

comes larger as the value increas-
es.

VHCL SPEED SE

km/h or 

mph

The vehicle speed computed from 
the vehicle speed signal sent from 
combination meter is displayed.

SET VHCL SPD

km/h or 

mph

• The preset vehicle speed is dis-

played.

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 sig-
nal.

SET SW

On/Off

×

Indicates [On/Off] condition from 
SET/COAST switch signal.

BRAKE SW1

On/Off

Indicates [On/Off] condition from 
Brake pedal position switch signal or 
ASCD clutch switch.

Monitored item

Unit

Monitor Item Selec-

tion

Description

Remarks

ECU IN-

PUT SIG-

NALS

MAIN-

SIG-

NALS

DIAGNOSIS SYSTEM (ECM)

EC-67

< SYSTEM DESCRIPTION >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

BRAKE SW2

On/Off

Indicates [On/Off] condition of stop 
lamp switch signal.

VHCL SPD CUT

Non/
CUT

• Indicates the vehicle cruise condi-

tion.
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 condi-

tion.
NON: Vehicle speed is maintained 
at the ASCD set speed.
CUT: Vehicle speed decreased to 
excessively low, and ASCD oper-
ation 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 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 determined by the ECM 
according to the input signals.

FAN DUTY

%

Indicates a command value for cool-
ing fan. The value is calculated by 
ECM based on input signals.

ALT DUTY

%

Indicates the duty ratio of the power 
generation command value. The ra-
tio is calculated by ECM based on 
the battery current sensor signal.

VIAS S/V-2

On/Off

The control condition of the VIAS 
control solenoid valve 2 (determined 
by ECM according to the input sig-
nals) is indicated.
• On: VIAS control solenoid valve 2 

is operating.

• Off: VIAS control solenoid valve 2 

is not operating.

BAT CUR SEN

mV

The signal voltage of battery current 
sensor is displayed.

A/F ADJ-B1

—

Indicates the correction of a factor 
stored in ECM. The factor is calcu-
lated from the difference between 
the target air-fuel ratio stored in ECM 
and the air-fuel ratio calculated from 
A/F sensor 1 signal.

A/F ADJ-B2

P/N POSI SW

On/Off

×

×

Indicates [On/Off] condition from the 
park/neutral position (PNP) signal.

Monitored item

Unit

Monitor Item Selec-

tion

Description

Remarks

ECU IN-

PUT SIG-

NALS

MAIN-

SIG-

NALS

EC-68

< SYSTEM DESCRIPTION >

[VQ35DE]

DIAGNOSIS SYSTEM (ECM)

INT/A TEMP SE

°C or °F

×

×

The intake air temperature (deter-
mined by the signal voltage of the in-
take air temperature sensor) is 
indicated.

AC PRESS SEN

V

The signal voltage from the refriger-
ant pressure sensor is displayed.

A/F SEN1 (B2)

V

×

×

The A/F signal computed from the 
input signal of the air fuel ratio (A/F) 
sensor 1 is displayed.

VTC DTY EX B2*

%

—

EVAP LEAK DIAG

Yet/CM-

PLT

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

been performed yet.

• CMPLT: EVAP leak diagnosis has 

been performed successfully.

EVAP DIAG READY

On/Off

Indicates the ready condition of 
EVAP leak diagnosis.
• On: Diagnosis has been ready 

condition.

• Off: Diagnosis has not been ready 

condition.

BAT TEMP SEN

V

The signal voltage from the battery 
temperature sensor is displayed.

THRTL STK CNT B1*

—

—

HO2 S2 DIAG1(B2)

INCMP/

CMPLT

Indicates DTC P0139 self-diagnosis 
(delayed response) condition.
• INCMP: Self-diagnosis is incom-

plete.

• CMPLT: Self-diagnosis is com-

plete.

A/F SEN1 DIAG1(B2)

INCMP/

CMPLT

Indicates DTC P015C or P015D 
self-diagnosis condition.
• INCMP: Self-diagnosis is incom-

plete.

• CMPLT: Self-diagnosis is com-

plete.

A/F SEN1 DIAG1(B1)

INCMP/

CMPLT

Indicates DTC P015A or P015B self-
diagnosis condition.
• INCMP: Self-diagnosis is incom-

plete.

• CMPLT: Self-diagnosis is com-

plete.

A/F SEN1 DIAG2(B2)

INCMP/

CMPLT

Indicates DTC P014E or P014F self-
diagnosis condition.
• INCMP: Self-diagnosis is incom-

plete.

• CMPLT: Self-diagnosis is com-

plete.

A/F SEN1 DIAG2(B1)

INCMP/

CMPLT

Indicates DTC P014C or P014Dself-
diagnosis condition.
• INCMP: Self-diagnosis is incom-

plete.

• CMPLT: Self-diagnosis is com-

plete.

Monitored item

Unit

Monitor Item Selec-

tion

Description

Remarks

ECU IN-

PUT SIG-

NALS

MAIN-

SIG-

NALS

DIAGNOSIS SYSTEM (ECM)

EC-69

< 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:

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

WORK SUPPORT MODE

Work Item

A/F SEN1 DIAG3(B2)

ABSNT/

PRSNT

Indicates DTC P014C, P014D, 
P015A or P015B self-diagnosis con-
dition.
• ABSNT: The vehicle condition is 

not within the diagnosis range.

• PRSNT: The vehicle condition is 

within the diagnosis range.

A/F SEN1 DIAG3(B1)

ABSNT/

PRSNT

Indicates DTC P014C, P014D, 
P015A or P015B self-diagnosis con-
dition.
• ABSNT: The vehicle condition is 

not within the diagnosis range.

• PRSNT: The vehicle condition is 

within the diagnosis range.

HO2 S2 DIAG2(B2)

INCMP/

CMPLT

Indicates DTC P0139 self-diagnosis 
(slow response) condition.
• INCMP: Self-diagnosis is incom-

plete.

• CMPLT: Self-diagnosis is com-

plete.

HO2 S2 DIAG2(B1)

INCMP/

CMPLT

Indicates DTC P0139 self-diagnosis 
(slow response) condition.
• INCMP: Self-diagnosis is incom-

plete.

• CMPLT: Self-diagnosis is com-

plete.

EOP SENSOR

mV

The signal voltage of EOP sensor is 
displayed.

HO2 S2 DIAG1(B1)

INCMP/

CMPLT

Indicates DTC P0139 self-diagnosis 
(delayed response) condition.
• INCMP: Self-diagnosis is incom-

plete.

• CMPLT: Self-diagnosis is com-

plete.

DIST SW

On/Off

Indicates [On/Off] condition from 
DISTANCE switch signal.

AC EVA TEMP

°C or °F

Indicates A/C evaporator tempera-
ture sent from“A/C auto amp.”.

AC EVA TARGET

°C or °F

Indicates target A/C evaporator tem-
perature sent from“A/C auto amp.”.

Monitored item

Unit

Monitor Item Selec-

tion

Description

Remarks

ECU IN-

PUT SIG-

NALS

MAIN-

SIG-

NALS