Nissan Altima L32. Instruction — part 510

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-1161

< FUNCTION DIAGNOSIS >

[VQ35DE]

C

D

E

F

G

H

I

J

K

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M

A

EC

N

P

O

VIAS S/V-1

ON/OFF

• The control condition of the VIAS control solenoid

valve 1 (determined by ECM according to the in-
put signals) is indicated.
ON: VIAS control solenoid valve 1 is operating.
OFF: VIAS control solenoid valve 1 is not operat-
ing.

VIAS S/V-2

ON/OFF

• The control condition of the VIAS control solenoid

valve 2 (determined by ECM according to the in-
put signals) is indicated.
ON: VIAS control solenoid valve 2 is operating.
OFF: VIAS control solenoid valve 2 is not operat-
ing.

AIR COND RLY

ON/OFF

• The air conditioner relay control condition (deter-

mined by ECM according to the input signals) is
indicated.

ENGINE MOUNT

IDLE/RUN

• The control condition of the electronic controlled

engine mount (determined by ECM according to
the input signals) is indicated.
IDLE: Engine speed is below 950 rpm
RUN: Engine speed is above 950 rpm

FUEL PUMP RLY

ON/OFF

• Indicates the fuel pump relay control condition

determined by ECM according to the input sig-
nals.

VENT CONT/V

ON/OFF

• The control condition of the EVAP canister 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/MID/LOW/

OFF

• The control condition of the cooling fan (deter-

mined by ECM according to the input signals) is
indicated.
HI: High speed operation
MID: Middle speed operation
LOW: Low speed operation
OFF: Stop

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)

I/P PULLY SPD

rpm

• Indicates the engine speed computed from the

turbine revolution sensor signal.

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/CMPLT

• Displays the condition of idle air volume learning

YET: Idle Air Volume Learning has not been per-
formed yet.
CMPLT: Idle Air Volume Learning has already
been performed successfully.

ENG OIL TEMP

°C or °F

• The engine oil temperature (determined by the

signal voltage of the engine oil temperature sen-
sor) is displayed.

TRVL AFTER MIL

km or mile

• Distance traveled while MIL is activated.

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 becomes larger as

the value increases.

A/F S1 HTR(B2)

Monitored item

Unit

Description

Remarks

EC-1162

< FUNCTION DIAGNOSIS >

[VQ35DE]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

NOTE:

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 combination meter is dis-
played.

SET VHCL SPD

km/h or mph

• 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/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.

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

BAT CUR SEN

mV

• The signal voltage of battery current sensor is

displayed.

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.

Monitored item

Unit

Description

Remarks

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-1163

< FUNCTION DIAGNOSIS >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

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

ACTIVE TEST MODE

Test Item

TEST ITEM

CONDITION

JUDGMENT

CHECK ITEM (REMEDY)

FUEL INJEC-
TION

• Engine: Return to the original

trouble condition

• Change the amount of fuel injec-

tion using CONSULT-III.

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-III.

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
• Selector lever position: P or N

(CVT), neutral (M/T)

• Cut off each injector signal one at

a time using CONSULT-III.

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-III.

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-III.

If trouble symptom disappears, 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-III
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-III and lis-
ten 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-III 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
CONSULT-III.

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-III.

Engine speed changes according to
the opening percent.

• Harness and connectors
• Solenoid valve

FUEL/T TEMP
SEN

• Change the fuel tank temperature using CONSULT-III.

VENT CON-
TROL/V

• Ignition switch: ON (Engine

stopped)

• Turn solenoid valve “ON” and

“OFF” with the CONSULT-III and
listen to operating sound.

Solenoid valve makes an operating
sound.

• Harness and connectors
• Solenoid valve

EC-1164

< FUNCTION DIAGNOSIS >

[VQ35DE]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

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

DTC & SRT CONFIRMATION MODE

SRT STATUS Mode

For details, refer to

EC-1142, "Diagnosis Description"

.

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 this model but appears in DTC Work Support Mode screens.

Diagnosis Tool Function

INFOID:0000000004362008

DESCRIPTION

Generic Scan Tool (OBD II scan tool) complying with SAE J1978 has

several functions explained below.

ISO15765-4 is used as the protocol.

The name “GST” or “Generic Scan Tool” is used in this service man-

ual.

FUNCTION

INT V/T ASSIGN
ANGLE

• Engine: Return to the original

non-standard condition

• Change intake valve timing using

CONSULT-III.

If malfunctioning symptom disap-
pears, see CHECK ITEM.

• Harness and connectors
• Intake valve timing control sole-

noid valve

ALTERNATOR
DUTY

• Engine: Idle
• Change duty ratio using CON-

SULT-III.

Battery voltage changes.

• Harness and connectors
• IPDM E/R
• Alternator

TEST ITEM

CONDITION

JUDGMENT

CHECK ITEM (REMEDY)

Test mode

Test item

Corresponding DTC No.

Reference page

EVAPORATIVE SYSTEM

EVP SML LEAKAGE P0442/P1442*

P0442

EC-1310

P0455

EC-1346

EVP V/S LEAKAGE P0456/P1456*

P0456

EC-1352

PURG VOL CN/V P1444

P0443

EC-1316

PURG FLOW P0441

P0441

EC-1305

A/F SEN1

A/F SEN1(B1) P1278/P1279

P0133

EC-1237

A/F SEN1(B1) P1276

P0130

EC-1225

A/F SEN1(B2) P1288/P1289

P0153

EC-1237

A/F SEN1(B2) P1286

P0150

EC-1225

HO2S2

HO2S2(B1) P1146

P0138

EC-1249

HO2S2(B1) P1147

P0137

EC-1242

HO2S2(B1) P0139

P0139

EC-1259

HO2S2(B2) P1166

P0158

EC-1249

HO2S2(B2) P1167

P0157

EC-1242

HO2S2(B2) P0159

P0159

EC-1259

SEF139P