Infiniti G35 (V35) Sedan. Manual — part 493
EC-118
< FUNCTION DIAGNOSIS >
[VQ35HR]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
FUEL T/TMP SE
°
C or
°
F
• The fuel temperature (determined by the signal
voltage of the fuel tank temperature sensor) is
displayed.
INT/A TEMP SE
°
C or
°
F
• The intake air temperature (determined by the
signal voltage of the intake air temperature sen-
sor) is indicated.
EVAP SYS PRES
V
• The signal voltage of EVAP control system pres-
sure sensor is displayed.
FUEL LEVEL SE
V
• 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)
°
CA
• Indicates [
°
CA] of intake camshaft advance an-
gle.
INT/V TIM (B2)
EXH/V TIM B1
°
CA
• 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]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
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
V
• 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
°
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)
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.
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
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 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
°
F
• 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]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
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
°
F
• 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
V
• 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
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