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Infiniti G35 (V35) Sedan. Manual - part 493

EC-118

< FUNCTION DIAGNOSIS >

[VQ35HR]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

FUEL T/TMP SE

C or

• The fuel temperature (determined by the signal

voltage of the fuel tank temperature sensor) is
displayed.

INT/A TEMP SE

C or

• The intake air temperature (determined by the

signal voltage of the intake air temperature sen-
sor) is indicated.

EVAP SYS PRES

• The signal voltage of EVAP control system pres-

sure sensor is displayed.

FUEL LEVEL SE

• The signal voltage of the fuel level sensor is dis-

played.

START SIGNAL

ON/OFF

• Indicates start signal status [ON/OFF] computed

by the ECM according to the signals of engine
speed and battery voltage.

• After starting the engine, [OFF] is dis-

played regardless of the starter sig-
nal.

CLSD THL POS

ON/OFF

• Indicates idle position [ON/OFF] computed by

ECM according to the accelerator pedal position
sensor signal.

AIR COND SIG

ON/OFF

• Indicates [ON/OFF] condition of the air condition-

er switch as determined by the air conditioner sig-
nal.

P/N POSI SW

ON/OFF

• Indicates [ON/OFF] condition from the park/neu-

tral position (PNP) switch signal.

PW/ST SIGNAL

ON/OFF

• [ON/OFF] condition of the power steering system

(determined by the signal voltage of the power
steering pressure sensor signal) is indicated.

LOAD SIGNAL

ON/OFF

• Indicates [ON/OFF] condition from the electrical

load signal.
ON: Rear window defogger switch is ON and/or
lighting switch is in 2nd position.
OFF: Both rear window defogger switch and light-
ing switch are OFF.

IGNITION SW

ON/OFF

• Indicates [ON/OFF] condition from ignition switch

signal.

HEATER FAN SW

ON/OFF

• Indicates [ON/OFF] condition from the heater fan

switch signal.

BRAKE SW

ON/OFF

• Indicates [ON/OFF] condition from the stop lamp

switch signal.

INJ PULSE-B1

msec

• Indicates the actual fuel injection pulse width

compensated by ECM according to the input sig-
nals.

• When the engine is stopped, a certain

computed value is indicated.

INJ PULSE-B2

IGN TIMING

BTDC

• Indicates the ignition timing computed by ECM

according to the input signals.

• When the engine is stopped, a certain

value is indicated.

CAL/LD VALUE

• “Calculated load value” indicates the value of the

current air flow divided by peak air flow.

MASS AIRFLOW

g·m/s

• Indicates the mass air flow computed by ECM ac-

cording to the signal voltage of the mass air flow
sensor.

PURG VOL C/V

• Indicates the EVAP canister purge volume con-

trol solenoid valve control value computed by the
ECM according to the input signals.

• The opening becomes larger as the value in-

creases.

INT/V TIM (B1)

• Indicates [

CA] of intake camshaft advance an-

gle.

INT/V TIM (B2)

EXH/V TIM B1

• Indicates [

CA] of exhaust camshaft retard angle.

EXH/V TIM B2

Monitored item

Unit

Description

Remarks

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-119

< FUNCTION DIAGNOSIS >

[VQ35HR]

INT/V SOL (B1)

• The control value of the intake valve timing con-

trol solenoid valve (determined by ECM accord-
ing to the input signals) is indicated.

• The advance angle becomes larger as the value

increases.

INT/V SOL (B2)

EX VTC DTY B1

• The control value of the exhaust valve timing con-

trol magnet retarder (determined by ECM accord-
ing to the input signals) is indicated.

• The retard angle becomes larger as the value in-

creases.

EX VTC DTY B2

TP SEN 1-B2

• The throttle position sensor signal voltage is dis-

played.

• TP SEN 2-B2 signal is converted by

ECM internally. Thus, they differs
from ECM terminal voltage signal.

TP SEN 2-B2

AIR COND RLY

ON/OFF

• The air conditioner relay control condition (deter-

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

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.

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

• Display 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.

SNOW MODE SW

ON/OFF

• Indicates [ON/OFF] condition from the snow

mode switch signal.

ENG OIL TEMP

C or

• 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)

AC PRESS SEN

• 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.

Monitored item

Unit

Description

Remarks

EC-120

< FUNCTION DIAGNOSIS >

[VQ35HR]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

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.

BRAKE SW2

ON/OFF

• Indicates [ON/OFF] condition of stop lamp switch

signal.

DIST SW

ON/OFF

• Indicates [ON/OFF] condition from DISTANCE

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 A/T O/D accord-

ing to the input signal from the TCM.

• For M/T models, always “OFF” is dis-

played.

AT OD CANCEL

ON/OFF

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

request signal.

• For M/T models, always “OFF” is dis-

played.

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.

EXH V/T LEARN

YET/CMPLT

• Display the condition of Exhaust Valve Timing

Control Learning
YET: Exhaust Valve Timing Control Learning has
not been performed yet.
CMPLT: Exhaust Valve Timing Control Learning
has already been performed successfully.

BAT CUR SEN

• 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 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

FAN DUTY

• Indicates a command value for cooling fan. The

value is calculated by ECM based on input sig-
nals.

AC EVA TEMP

C or

• Indicates A/C evaporator temperature sent from

“unified meter and A/C amp.”.

Monitored item

Unit

Description

Remarks

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-121

< FUNCTION DIAGNOSIS >

[VQ35HR]

NOTE:

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

ACTIVE TEST MODE

Test Item

AC EVA TARGET

C or

• Indicates target A/C evaporator temperature sent

from “unified meter and A/C amp.”.

ALTDUTY

• Indicates the duty ratio of the power generation

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

Voltage

• Voltage, frequency, duty cycle or pulse width

measured by the probe.

• Only “#” is displayed if item is unable

to be measured.

• Figures with “#”s are temporary ones.

They are the same figures as an actu-
al piece of data which was just previ-
ously measured.

Frequency

msec, Hz or %

DUTY-HI

—

DUTY-LOW

PLS WIDTH-HI

PLS WIDTH-LOW

Monitored item

Unit

Description

Remarks

TEST ITEM

CONDITION

JUDGEMENT

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: P or N (A/T), Neu-

tral (M/T)

• Cut off each injector signal one at

a time using CONSULT-III.

Engine runs rough or dies.

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

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 lis-
ten to operating sound.

Fuel pump relay makes the operat-
ing sound.

• Harness and connectors
• Fuel pump relay

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

Content .. 491 492 493 494 ..