2005 INFINITI FX35 Service Manual

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Page 2217 of 4731

INFINITI FX35 2005 Service Manual EC-824
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
X: Applicable
*1: This item includes 1st trip DTCs.
*2: This mode includes 1st trip freeze frame data or freeze frame data. The items app

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INFINITI FX35 2005 Service Manual TROUBLE DIAGNOSIS EC-825
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Revision: 2005 July 2005 FX
4. Touch “START (NISSAN BASED VHCL)”.
5. Touch “ENGINE”.
If “ENGINE” is not indicate

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INFINITI FX35 2005 Service Manual EC-826
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
*: This function is not necessary in the usual service procedure.
SELF-DIAG RESULTS MODE
Self Diagnostic Item
Regarding items of DTC and

EC-826
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
*: This function is not necessary in the usual service procedure.
SELF-DIAG RESULTS MODE
Self Diagnostic Item
Regarding items of DTC and 1st trip DTC, refer to EC-707, "INDEX FOR DTC" .)
Freeze Frame Data and 1st Trip Freeze Frame Data
EVAP SYSTEM CLOSE CLOSE THE EVAP CANISTER VENT CONTROL VALVE IN
ORDER TO MAKE EVAP SYSTEM CLOSE UNDER THE
FOLLOWING CONDITIONS.
IGN SW ON
ENGINE NOT RUNNING
AMBIENT TEMPERATURE IS ABOVE 0 °C (32 °F).
NO VACUUM AND NO HIGH PRESSURE IN EVAP SYS-
TEM
FUEL TANK TEMP. IS MORE THAN 0 °C (32 °F).
WITHIN 10 MINUTES AFTER STARTING “EVAP SYS-
TEM CLOSE”
WHEN TRYING TO EXECUTE “EVAP SYSTEM CLOSE”
UNDER THE CONDITION EXCEPT ABOVE, CONSULT-
II WILL DISCONTINUE IT AND DISPLAY APPROPRI-
ATE INSTRUCTION.
NOTE:
WHEN STARTING ENGINE, CONSULT-II MAY DISPLAY
“BATTERY VOLTAGE IS LOW. CHARGE BATTERY”,
EVEN IN USING CHARGED BATTERY. When detecting EVAP vapor leak
point of EVAP system
VIN REGISTRATION
IN THIS MODE VIN IS REGISTERED IN ECM When registering VIN in ECM
TARGET IDLE RPM ADJ*
IDLE CONDITION When setting target idle speed
TARGET IGN TIM ADJ*
IDLE CONDITION When adjusting target ignition tim- ing
WORK ITEM CONDITION USAGE
Freeze frame data
item* Description
DIAG TROUBLE
CODE
[PXXXX]
The engine control component part/control system has a trouble code, it is displayed as PXXXX. (Refer to
EC-707, "
INDEX FOR DTC" .)
FUEL SYS-B1
“Fuel injection system status” at the moment a malfunction is detected is displayed.
One mode in the following is displayed.
Mode2: Open loop due to detected system malfunction
Mode3: Open loop due to driving conditions (power enrichment, deceleration enleanment)
Mode4: Closed loop - using oxygen sensor(s) as feedback for fuel control
Mode5: Open loop - has not yet satisfied condition to go to closed loop
FUEL SYS-B2
CAL/LD VALUE [%]
The calculated load value at the moment a malfunction is detected is displayed.
COOLANT TEMP [ °C]
or [ °F]
The engine coolant temperature at the moment a malfunction is detected is displayed.
L-FUEL TRM-B1 [%]
“Long-term fuel trim” at the moment a malfunction is detected is displayed.
The long-term fuel trim indicates much more gradual feedback compensation to the base fuel schedule
than short-term fuel trim.
L-FUEL TRM-B2 [%]
S-FUEL TRM-B1 [%]
“Short-term fuel trim” at the moment a malfunction is detected is displayed.
The short-term fuel trim indicates dynamic or instantaneous feedback compensation to the base fuel
schedule.
S-FUEL TRM-B2 [%]
ENGINE SPEED
[rpm]
The engine speed at the moment a malfunction is detected is displayed.
VEHICL SPEED
[km/h] or [mph]
The vehicle speed at the moment a malfunction is detected is displayed.

Page 2220 of 4731

INFINITI FX35 2005 Service Manual TROUBLE DIAGNOSIS EC-827
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Revision: 2005 July 2005 FX
*: The items are the same as those of 1st trip freeze frame data.
DATA MONITOR MODE
Monitored Ite

TROUBLE DIAGNOSIS EC-827
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Revision: 2005 July 2005 FX
*: The items are the same as those of 1st trip freeze frame data.
DATA MONITOR MODE
Monitored Item
× : Applicable
B/FUEL SCHDL
[msec]
The base fuel schedule at the moment a malfunction is detected is displayed.
INT/A TEMP SE [ °C]
or [ °F]
The intake air temperature at the moment a malfunction is detected is displayed.
Freeze frame data
item* Description
Monitored item
[Unit] ECM
INPUT
SIG-
NALS MAIN
SIG-
NALS Description Remarks
ENG SPEED [rpm] ××
Indicates the engine speed computed
from the signal of the crankshaft position
sensor (POS) and camshaft position sen-
sor (PHASE).Accuracy becomes poor if engine speed
drops below the idle rpm.
If the signal is interrupted while the
engine is running, an abnormal value may
be indicated.
MAS A/F SE-B1 [V] ××
The signal voltage of the mass air flow
sensor is displayed.When the engine is stopped, a certain
value is indicated.
B/FUEL SCHDL
[msec] ×
“Base fuel schedule” indicates the fuel
injection pulse width programmed into
ECM, prior to any learned on board cor-
rection.
A/F ALPHA-B1 [%] ×
The mean value of the air-fuel ratio feed-
back correction factor per cycle is indi-
cated.When the engine is stopped, a certain
value is indicated.
This data also includes the data for the
air-fuel ratio learning control.
A/F ALPHA-B2 [%]
×
COOLAN TEMP/S
[ ° C] or [ °F] ××
The engine coolant temperature (deter-
mined by the signal voltage of the engine
coolant temperature sensor) is displayed.
When the engine coolant temperature
sensor is open or short-circuited, ECM
enters fail-safe mode. The engine coolant
temperature determined by the ECM is
displayed.
HO2S1 (B1) [V] ××
The signal voltage of the heated oxygen
sensor 1 is displayed.
HO2S1 (B2) [V] ×
HO2S2 (B1) [V] ×
The signal voltage of the heated oxygen
sensor 2 is displayed.
HO2S2 (B2) [V] ×
HO2S1 MNTR (B1)
[RICH/LEAN] ××
Display of heated oxygen sensor 1 signal
during air-fuel ratio feedback control:
RICH: means the mixture became “rich”,
and control is being affected toward a
leaner mixture.
LEAN: means the mixture became “lean”,
and control is being affected toward a rich
mixture.After turning ON the ignition switch,
“RICH” is displayed until air-fuel mixture
ratio feedback control begins.
When the air-fuel ratio feedback is
clamped, the value just before the clamp-
ing is displayed continuously.
HO2S1 MNTR (B2)
[RICH/LEAN] ×
HO2S2 MNTR (B1)
[RICH/LEAN] ×
Display of heated oxygen sensor 2 signal:
RICH: means the amount of oxygen after
three way catalyst is relatively small.
LEAN: means the amount of oxygen after
three way catalyst is relatively large.
When the engine is stopped, a certain
value is indicated.
HO2S2 MNTR (B2)
[RICH/LEAN] ×
VHCL SPEED SE
[km/h] or [mph] ××
The vehicle speed computed from the
vehicle speed signal sent from combina-
tion meter is displayed.

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INFINITI FX35 2005 Service Manual EC-828
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
BATTERY VOLT
[V] ××The power supply voltage of ECM is dis-
played.
ACCEL SEN 1 [V] ××
The accelerator pedal position sensor

EC-828
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
BATTERY VOLT
[V] ××The power supply voltage of ECM is dis-
played.
ACCEL SEN 1 [V] ××
The accelerator pedal position sensor
signal voltage is displayed.ACCEL SENS2 signal is converted be
ECM internally. Thus, they differs from
ECM terminal voltage signal.
ACCEL SEN 2 [V]
×
THRTL SEN 1 [V] ××
The throttle position sensor signal voltage
is displayed.THRTL SEN 2 signal is converted by
ECM internally. Thus, they differs from
ECM terminal voltage signal.
THRTL SEN 2 [V]
×
FUEL T/TMP SE
[ ° C] or [ °F] ×
The fuel temperature (determined by the
signal voltage of the fuel tank tempera-
ture sensor) is displayed.
INT/A TEMP SE
[ ° C] or [ °F] ××
The intake air temperature (determined
by the signal voltage of the intake air tem-
perature sensor) is indicated.
EVAP SYS PRES
[V] ×
The signal voltage of EVAP control sys-
tem pressure sensor is displayed.
FUEL LEVEL SE
[V] ×
The signal voltage of the fuel level sensor
is displayed.
START SIGNAL
[ON/OFF] ××
Indicates start signal status [ON/OFF]
computed by the ECM according to the
signals of engine speed and battery volt-
age.
After starting the engine, [OFF] is dis-
played regardless of the starter signal.
CLSD THL POS
[ON/OFF] ××
Indicates idle position [ON/OFF] com-
puted by ECM according to the accelera-
tor pedal position sensor signal.
AIR COND SIG
[ON/OFF] ××
Indicates [ON/OFF] condition of the air
conditioner switch as determined by the
air conditioner signal.
P/N POSI SW
[ON/OFF] ××
Indicates [ON/OFF] condition from the
park/neutral 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 lighting switch are OFF.
IGNITION SW
[ON/OFF] ×
Indicates [ON/OFF] condition from igni-
tion 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 signals.When the engine is stopped, a certain
computed value is indicated.
INJ PULSE-B2
[msec]
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.
Monitored item
[Unit] ECM
INPUT SIG-
NALS MAIN
SIG-
NALS Description Remarks

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INFINITI FX35 2005 Service Manual TROUBLE DIAGNOSIS EC-829
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Revision: 2005 July 2005 FXCAL/LD VALUE [%]
“Calculated load value” indicates the
value of the current air flow divided

TROUBLE DIAGNOSIS EC-829
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Revision: 2005 July 2005 FXCAL/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 according to the signal voltage of
the mass air flow sensor.
PURG VOL C/V
[%]
Indicates the EVAP canister purge vol-
ume control solenoid valve control value
computed by the ECM according to the
input signals.
The opening becomes larger as the value
increases.
INT/V TIM (B1)
[ ° CA]
Indicates [ °CA] of intake camshaft
advanced angle.
INT/V TIM (B2)
[ ° CA]
INT/V SOL (B1) [%]
The control value of the intake valve tim-
ing control solenoid valve (determined by
ECM according to the input signals) is
indicated.
The advance angle becomes larger as
the value increases.
INT/V SOL (B2) [%]
VIAS S/V
[ON/OFF]
The control condition of the VIAS control
solenoid valve (determined by ECM
according to the input signals) is indi-
cated.
OFF: VIAS control solenoid valve is not
operating.
ON: VIAS control solenoid valve is oper-
ating.
AIR COND RLY
[ON/OFF] ×
The air conditioner relay control condition
(determined by ECM according to the
input signals) is indicated.
FUEL PUMP RLY
[ON/OFF] ×
Indicates the fuel pump relay control con-
dition determined by ECM according to
the input signals.
VENT CONT/V
[ON/OFF]
The control condition of the EVAP canis-
ter 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/OFF]
The control condition of the cooling fan
(determined by ECM according to the
input signals) is indicated.
HI: High speed operation
MID: Middle speed operation
OFF: Stop
Monitored item
[Unit] ECM
INPUT SIG-
NALS MAIN
SIG-
NALS Description Remarks

Page 2223 of 4731

INFINITI FX35 2005 Service Manual EC-830
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
HO2S1 HTR (B1)
[ON/OFF]Indicates [ON/OFF] condition of heated
oxygen sensor 1 heater determined by
ECM according to the input signal

EC-830
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
HO2S1 HTR (B1)
[ON/OFF]Indicates [ON/OFF] condition of heated
oxygen sensor 1 heater determined by
ECM according to the input signals.
HO2S1 HTR (B2)
[ON/OFF]
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)
[ON/OFF]
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 performed yet.
CMPLT: Idle air volume learning has
already been performed successfully.
TRVL AFTER MIL
[km] or [mile]
Distance traveled while MIL is activated.
SNOW MODE SW
[ON/OFF]
Indicates [ON/OFF] condition from the
snow mode switch signal.
O2SEN HTR DTY
[%]
Indicates the heated oxygen sensor 1
heater control value computed by the
ECM according to the input signals.
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 combina-
tion meter is displayed.
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 CAN-
CEL switch signal.
RESUME/ACC SW
[ON/OFF]
Indicates [ON/OFF] condition from
RESUME/ACCELERATE 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 DIS-
TANCE switch signal.
CRUISE LAMP
[ON/OFF]
Indicates [ON/OFF] condition of CRUISE
lamp determined by the ECM according
to the input signals.
Monitored item
[Unit] ECM
INPUT SIG-
NALS MAIN
SIG-
NALS Description Remarks

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INFINITI FX35 2005 Service Manual TROUBLE DIAGNOSIS EC-831
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Revision: 2005 July 2005 FX
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the disp

TROUBLE DIAGNOSIS EC-831
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Revision: 2005 July 2005 FX
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
DATA MONITOR (SPEC) MODE
Monitored Item
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
ACTIVE TEST MODE
Test Item
SET LAMP
[ON/OFF]Indicates [ON/OFF] condition of SET
lamp determined by the ECM according
to the input signals.
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 actual
piece of data which was just previously
measured.
Frequency [msec],
[Hz] or [%]
DUTY-HI
DUTY-LOW
PLS WIDTH-HI
PLS WIDTH-LOW Monitored item
[Unit] ECM
INPUT SIG-
NALS MAIN
SIG-
NALS Description Remarks
Monitored item [Unit]
ECM
input
signals Main
signals Description Remarks
ENG SPEED [rpm] ××
Indicates the engine speed computed
from the signal of the crankshaft position
sensor (POS) and camshaft position
sensor (PHASE).
MAS A/F SE-B1 [V] ××
The signal voltage of the mass air flow
sensor specification is displayed.When engine is running specification
range is indicated.
B/FUEL SCHDL
[msec] ×
“Base fuel schedule” indicates the fuel
injection pulse width programmed into
ECM, prior to any learned on board cor-
rection.
When engine is running specification
range is indicated.
A/F ALPHA-B1 [%]
A/F ALPHA-B2 [%] ×
The mean value of the air-fuel ratio feed-
back correction factor per cycle is indi-
cated.When engine is running specification
range is indicated.
This data also includes the data for the
air-fuel ratio learning control.
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-II. If trouble symptom disappears, see
CHECK ITEM.
Harness and connectors
Fuel injector
Heated oxygen sensor 1
IGNITION TIM-
ING
Engine: Return to the original
trouble condition
Timing light: Set
Retard the ignition timing using
CONSULT-II. If trouble symptom disappears, see
CHECK ITEM.
Perform Idle Air Volume Learning.

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