Nissan Pathfinder. Manual - part 442

EC-74

< ECU DIAGNOSIS INFORMATION >

[VQ35DE]

ECM

TP SEN 1-B1

• Ignition switch: ON

(Engine stopped)

• Selector lever: D position

Accelerator pedal: Fully released

More than 0.36 V

Accelerator pedal: Fully depressed

Less than 4.75 V

TP SEN 2-B1*

1

• Ignition switch: ON

(Engine stopped)

• Selector lever: D position

Accelerator pedal: Fully released

More than 0.36 V

Accelerator pedal: Fully depressed

Less than 4.75 V

FUEL T/TMP SE

Ignition switch: ON

Indicates fuel tank tempera-

ture

EVAP SYS PRES

Ignition switch: ON

Approx. 1.8 - 4.8 V

FUEL LEVEL SE

Ignition switch: ON

Depending on fuel level of 

fuel tank

START SIGNAL

Ignition switch: ON 

→ START → ON

Off 

→ On → Off

CLSD THL POS

Ignition switch: ON
(Engine stopped)

Accelerator pedal: Fully released

On

Accelerator pedal: Slightly depressed

Off

AIR COND SIG

Engine: After warming up, idle the 
engine

Air conditioner switch: OFF

Off

Air conditioner switch: ON
(Compressor operates.)

On

PW/ST SIGNAL

Engine: After warming up, idle the 
engine

Steering wheel: Not being turned

Off

Steering wheel: Being turned

On

LOAD SIGNAL

Ignition switch: ON

Rear window defogger switch: ON
and/or
Lighting switch: 2nd position

On

Rear window defogger switch and lighting 
switch: OFF

Off

IGNITION SW

Ignition switch: ON 

→ OFF → ON

On 

→ Off → On

HEATER FAN SW

Engine: After warming up, idle the 
engine

Heater fan switch: ON

On

Heater fan switch: OFF

Off

BRAKE SW

Ignition switch: ON

Brake pedal: Fully released

Off

Brake pedal: Slightly depressed

On

INJ PULSE-B1

• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

Idle

2.0 - 3.0 msec

2,000 rpm

1.9 - 2.9 msec

INJ PULSE-B2

• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

Idle

2.0 - 3.0 msec

2,000 rpm

1.9 - 2.9 msec

IGN TIMING

• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

Idle

7 - 17

°BTDC

2,000 rpm

25 - 45

°BTDC

CAL/LD VALUE

• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

Idle

5 - 35%

2,500 rpm

5 - 35%

MASS AIRFLOW

• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

Idle

2.0 - 6.0 g/s

2,500 rpm

7.0 - 20.0 g/s

PURG VOL C/V

• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

Idle
(Accelerator pedal: Not depressed even 
slightly, after engine starting.)

0%

2,000 rpm

—

Monitor Item

Condition

Values/Status

ECM

EC-75

< ECU DIAGNOSIS INFORMATION >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

INT/V TIM (B1)

• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

Idle

−5 - 5°CA

2,000 rpm

Approx. 0 - 30

°CA

INT/V TIM (B2)

• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

Idle

−5 - 5°CA

2,000 rpm

Approx. 0 - 30

°CA

INT/V SOL(B1)

• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

Idle

0 - 2%

2,000 rpm

Approx. 0 - 50%

INT/V SOL(B2)

• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

Idle

0 - 2%

2,000 rpm

Approx. 0 - 50%

VIAS S/V-1

• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

When revving engine up to 5,000 rpm 
quickly

Off 

→On → Off

AIR COND RLY

Engine: After warming up, idle the 
engine

Air conditioner switch: OFF

Off

Air conditioner switch: ON
(Compressor operates)

On

ENGINE MOUNT

Engine: After warming up

Below 950 rpm

IDLE

Above 950 rpm

TRVL

FUEL PUMP RLY

• For 1 second after turning ignition switch: ON
• Engine running or cranking

On

Except above

Off

VENT CONT/V

Ignition switch: ON

Off

THRTL RELAY

Ignition switch: ON

On

A/F S1 HTR(B2)

Engine: After warming up, idle the engine
(More than 140 seconds after starting engine)

4 - 100%

HO2S2 HTR (B1)

Engine speed: Below 3,600 rpm 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

On

Engine speed: Above 3,600 rpm

Off

HO2S2 HTR (B2)

Engine speed: Below 3,600 rpm 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

On

Engine speed: Above 3,600 rpm

Off

ALT DUTY SIG

Power generation voltage variable control: Operating

On

Power generation voltage variable control: Not operating

Off

I/P PULLY SPD

Vehicle speed: More than 20 km/h (12 MPH)

Almost the same speed as 

the tachometer indication

VEHICLE SPEED

Turn drive wheels and compare CONSULT value with the speedometer indica-
tion.

Almost the same speed as 

the speedometer indication

IDL A/V LEARN

Engine: Running

Idle air volume learning has not been per-
formed yet.

Yet

Idle air volume learning has already been 
performed successfully.

CMPLT

TRVL AFTER MIL

Ignition switch: ON

Vehicle has traveled after MIL has illumi-
nated.

0 - 65,535 km

(0 - 40,723 miles)

Monitor Item

Condition

Values/Status

EC-76

< ECU DIAGNOSIS INFORMATION >

[VQ35DE]

ECM

ENG OIL TEMP

Engine: After warming up

More than 70

°C (158°F)

A/F S1 HTR(B1)

Engine: After warming up, idle the engine
(More than 140 seconds after starting engine)

4 - 100%

VHCL SPEED SE

Turn drive wheels and compare CONSULT value with the speedometer indica-
tion.

Almost the same speed as 

the speedometer indication

SET VHCL SPD

Engine: Running

ASCD: Operating

The preset vehicle speed is 

displayed

MAIN SW

Ignition switch: ON

MAIN switch: Pressed

On

MAIN switch: Released

Off

CANCEL SW

Ignition switch: ON

CANCEL switch: Pressed

On

CANCEL switch: Released

Off

RESUME/ACC SW

Ignition switch: ON

RESUME/ACCELERATE switch: 
Pressed

On

RESUME/ACCELERATE switch: Re-
leased

Off

SET SW

Ignition switch: ON

SET/COAST switch: Pressed

On

SET/COAST switch: Released

Off

BRAKE SW1
(Brake pedal posi-
tion switch)

Ignition switch: ON

Brake pedal: Fully released

On

Brake pedal: Slightly depressed

Off

BRAKE SW2
(Stop lamp switch)

Ignition switch: ON

Brake pedal: Fully released

Off

Brake pedal: Slightly depressed

On

VHCL SPD CUT

Ignition switch: ON

Non

LO SPEED CUT

Ignition switch: ON

Non

AT OD MONITOR

Ignition switch: ON

Off

AT OD CANCEL

Ignition switch: ON

Off

CRUISE LAMP

Ignition switch: ON

MAIN switch: Pressed at the 1st time 

→ 

at the 2nd time

On 

→ Off

SET LAMP

• MAIN switch: ON
• When vehicle speed is between 

40 km/h (25 MPH) and 144 km/h 
(89 MPH)

ASCD: Operating

On

ASCD: Not operating

Off

FAN DUTY

Engine: Running

0 - 100%

ALT DUTY

Engine: Idle

0 - 80%

VIAS S/V-2

• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

When revving engine up to 5,000 rpm 
quickly

Off 

→On → Off

BAT CUR SEN

• Engine speed: Idle
• Battery: Fully charged*

2

• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

Approx. 2,600 - 3,500 mV

A/F ADJ-B1

Engine: Running

−0.330 - 0.330

A/F ADJ-B2

Engine: Running

−0.330 - 0.330

P/N POSI SW

Ignition switch: ON

Selector lever: P or N position

On

Selector lever: Except above position

Off

INT/A TEMP SE

Ignition switch: ON

Indicates intake air tempera-

ture

AC PRESS SEN

• Engine: Idle
• Both A/C switch and blower fan switch: ON (Compressor operates)

1.0 - 4.0 V

Monitor Item

Condition

Values/Status

ECM

EC-77

< ECU DIAGNOSIS INFORMATION >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

A/F SEN1 (B2)

Engine: After warming up

Maintaining engine speed at 2,000 rpm

Fluctuates around 2.2 V

VTC DTY EX B2

*3

—

—

EVAP LEAK DIAG

Ignition switch: ON

Indicates the condition of 

EVAP leak diagnosis.

EVAP DIAG READY

Ignition switch: ON

Indicates the ready condition 

of EVAP leak diagnosis.

BAT TEMP SEN

• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

Idle

Indicates the temperature 

around the battery.

THRTL STK CNT 
B1

*3

—

—

HO2 S2 DIAG1(B2)

DTC P0159 self-diagnosis (delayed response) has not been performed yet.

INCMP

DTC P0159 self-diagnosis (delayed response) has already been performed suc-
cessfully.

CMPLT

A/F SEN1 DIAG1 
(B2)

DTC P015C and P015D self-diagnosis is incomplete.

INCMP

DTC P015C and P015D self-diagnosis is complete.

CMPLT

A/F SEN1 DIAG1 
(B1)

DTC P015A and P015B self-diagnosis is incomplete.

INCMP

DTC P015A and P015B self-diagnosis is complete.

CMPLT

A/F SEN1 DIAG2 
(B2)

DTC P014E and P014F self-diagnosis is incomplete.

INCMP

DTC P014E and P014F self-diagnosis is complete.

CMPLT

A/F SEN1 DIAG2 
(B1)

DTC P014C and P014D self-diagnosis is incomplete.

INCMP

DTC P014C and P014D self-diagnosis is complete.

CMPLT

A/F SEN1 DIAG3 
(B2)

The vehicle condition is not within the diagnosis range of DTC P014E, P014F, 
P015C or P015D.

ABSNT

The vehicle condition is within the diagnosis range of DTC P014E, P014F, 
P015C or P015D.

PRSNT

A/F SEN1 DIAG3 
(B1)

The vehicle condition is not within the diagnosis range of DTC P014C, P014D, 
P015A or P015B.

ABSNT

The vehicle condition is within the diagnosis range of DTC P014C, P014D, 
P015A or P015B.

PRSNT

HO2 S2 DIAG2(B2)

DTC P0159 self-diagnosis (slow response) has not been performed yet.

INCMP

DTC P0159 self-diagnosis (slow response) has already been performed suc-
cessfully.

CMPLT

HO2 S2 DIAG2(B1)

DTC P0139 self-diagnosis (slow response) has not been performed yet.

INCMP

DTC P0139 self-diagnosis (slow response) has already been performed suc-
cessfully.

CMPLT

EOP SENSOR

• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
• No  load

Idle

Approx. 1,450 mV

2,000 rpm

Approx. 2,850 mV

HO2 S2 DIAG1(B1)

DTC P0139 self-diagnosis (delayed response) has not been performed yet.

INCMP

DTC P0139 self-diagnosis (delayed response) has already been performed suc-
cessfully.

CMPLT

DIST SW

Ignition switch: ON

DISTANCE switch: Pressed

ON

DISTANCE switch: Released

OFF

Monitor Item

Condition

Values/Status