Infiniti FX35 / FX45. Manual — part 340
TROUBLE DIAGNOSIS
EC-121
< SERVICE INFORMATION >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
*: The items are the same as those of 1st trip freeze frame data.
DATA MONITOR MODE
Monitored Item
×
: Applicable
INT/A TEMP SE
[
°
C] or [
°
F]
• The intake air temperature at the moment a malfunction is detected is displayed.
INT MANI PRES [kPa]
• Always a certain value is displayed.
• These items are not efficient for S50 models.
FTFMCH1
Freeze frame data
item*
Description
Monitored item
Unit
Description
Remarks
ENG SPEED
rpm
• Indicates the engine speed computed from the sig-
nal of the crankshaft position sensor (POS) and
camshaft position sensor (PHASE).
• Accuracy becomes poor if engine speed
drops below the idle rpm.
• If the signal is interrupted while the en-
gine is running, an abnormal value may
be indicated.
MAS A/F SE-B1
×
• The signal voltage of the mass air flow sensor is
displayed.
• When the engine is stopped, a certain
value is indicated.
B/FUEL SCHDL
×
• Base fuel schedule indicates the fuel injection
pulse width programmed into ECM, prior to any
learned on board correction.
A/F ALPHA-B1
%
• The mean value of the air-fuel ratio feedback cor-
rection factor per cycle is indicated.
• 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
°
• The engine coolant temperature (determined by
the signal voltage of the engine coolant tempera-
ture sensor) is displayed.
• When the engine coolant temperature
sensor is open or short-circuited, ECM
enters fail-safe mode. The engine cool-
ant temperature determined by the ECM
is displayed.
A/F SEN1 (B1)
×
• The A/F signal computed from the input signal of
the Air fuel ratio (A/F) sensor 1 is displayed.
A/F SEN1 (B2)
×
HO2S2 (B1)
×
• The signal voltage of the heated oxygen sensor 2 is
displayed.
HO2S2 (B2)
×
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 combination meter is dis-
played.
BATTERY VOLT
V
• The power supply voltage of ECM is displayed.
ACCEL SEN 1
×
• The accelerator pedal position sensor signal volt-
age is displayed.
• ACCEL SEN 2 signal is converted by
ECM internally. Thus, it differs from ECM
terminal voltage signal.
ACCEL SEN 2
×
TP SEN 1-B1
V
• The throttle position sensor signal voltage is dis-
played.
• THRTL SEN 2 signal is converted by
ECM internally. Thus, it differs from ECM
terminal voltage signal.
TP SEN 2-B1
V
FUEL T/TMP SE
°
C or
°
• The fuel temperature (determined by the signal
voltage of the fuel tank temperature sensor) is dis-
played.
INT/A TEMP SE
°
C or
°
F
• The intake air temperature (determined by the sig-
nal voltage of the intake air temperature sensor) is
indicated.
EC-122
< SERVICE INFORMATION >
[VQ35DE]
TROUBLE DIAGNOSIS
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
×
• 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 signal.
CLSD THL POS
×
• Indicates idle position [ON/OFF] computed by ECM
according to the accelerator pedal position sensor
signal.
AIR COND SIG
×
• Indicates [ON/OFF] condition of the air conditioner
switch as determined by the air conditioner signal.
P/N POSI SW
×
• Indicates [ON/OFF] condition from the park/neutral
position (PNP) switch signal.
PW/ST SIGNAL
×
• [ON/OFF] condition of the power steering system
(determined by the signal voltage of the power
steering pressure sensor) is indicated.
LOAD SIGNAL
×
• 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
×
• Indicates [ON/OFF] condition from ignition switch
signal.
HEATER FAN SW
×
• Indicates [ON/OFF] condition from the heater fan
switch signal.
BRAKE SW
×
• Indicates [ON/OFF] condition from the stop lamp
switch signal.
INJ PULSE-B1
×
• Indicates the actual fuel injection pulse width com-
pensated by ECM according to the input signals.
• When the engine is stopped, a certain
computed value is indicated.
INJ PULSE-B2
×
IGN TIMING
×
• Indicates the ignition timing computed by ECM ac-
cording 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 cur-
rent 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 control
solenoid valve control value computed by the ECM
according to the input signals.
• The opening becomes larger as the value increas-
es.
INT/V TIM(B1)
°
CA
• Indicates [
°
CA] of intake camshaft advanced angle.
INT/V TIM(B2)
°
CA
INT/V SOL(B1)
%
• The control condition of the intake valve timing con-
trol solenoid valve (determined by ECM according
to the input signals) is indicated.
• The advance angle becomes larger as the value in-
creases.
INT/V SOL(B2)
%
AIR COND RLY
×
• The air conditioner relay control condition (deter-
mined by ECM according to the input signals) is in-
dicated.
FUEL PUMP RLY
×
• Indicates the fuel pump relay control condition de-
termined by ECM according to the input signals.
Monitored item
Unit
Description
Remarks
TROUBLE DIAGNOSIS
EC-123
< SERVICE INFORMATION >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
VENT CONT/V
×
• 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
×
• 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 (determined
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)
×
• 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 tur-
bine revolution sensor signal.
VEHICLE SPEED
km/h or
mph
• Indicates the vehicle speed computed from the rev-
olution sensor signal.
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.
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.
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 TCM 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 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.
Monitored item
Unit
Description
Remarks
EC-124
< SERVICE INFORMATION >
[VQ35DE]
TROUBLE DIAGNOSIS
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
ACTIVE TEST MODE
Test Item
VHCL SPD CUT
NON/
CUT
• Indicates the vehicle cruise condition.
NON: Vehicle speed is maintained at the ASCD set
speed.
CUT: Vehicle speed increased to excessively high
compared with the ASCD set speed, and ASCD op-
eration 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
compared with the ASCD set speed, and ASCD op-
eration is cut off.
AT OD MONITOR
ON/OFF
• Indicates [ON/OFF] condition of A/T O/D according
to the input signal from the TCM.
AT OD CANCEL
ON/OFF
• Indicates [ON/OFF] condition of A/T O/D cancel
signal sent from the TCM.
DIST SW
ON/OFF
• Indicates [ON/OFF] condition from DISTANCE
switch signal.
CRUISE LAMP
ON/OFF
• Indicates [ON/OFF] condition of CRUISE lamp de-
termined 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.
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 signal.
A/F ADJ-B2
ム
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
• Cut off each fuel 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
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
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст