Infiniti I30. Emission Control System (2003 year). Manual

RELATIONSHIP BETWEEN MIL, DTC, 1ST TRIP DTC AND DRIVING PATTERNS EXCEPT
FOR “MISFIRE <EXHAUST QUALITY DETERIORATION>”, “FUEL INJECTION SYSTEM”

NHEC0033S05

SEF393S

*1: When the same malfunction is

detected in two consecutive trips,
MIL will light up.

*2: MIL will go off after vehicle is

driven 3 times (pattern B) without
any malfunctions.

*3: When the same malfunction is

detected in two consecutive trips,
the DTC and the freeze frame
data will be stored in ECM.

*4: The DTC and the freeze frame

data will not be displayed any
longer after vehicle is driven 40
times (pattern A) without the same
malfunction.
(The DTC and the freeze frame
data still remain in ECM.)

*5: When a malfunction is detected

for the first time, the 1st trip DTC

and the 1st trip freeze frame data
will be stored in ECM.

*6: 1st trip DTC will be cleared after

vehicle is driven once (pattern B)
without the same malfunction.

*7: When the same malfunction is

detected in the 2nd trip, the 1st
trip freeze frame data will be
cleared.

IDX

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

OBD System Operation Chart (Cont’d)

EC-97

EXPLANATION FOR DRIVING PATTERNS EXCEPT FOR “MISFIRE <EXHAUST QUALITY
DETERIORATION>”, “FUEL INJECTION SYSTEM”

NHEC0033S06

<Driving Pattern A>

NHEC0033S0601

AEC574

쐌

The A counter will be cleared when the malfunction is detected regardless of (1) - (4).

쐌

The A counter will be counted up when (1) - (4) are satisfied without the same malfunction.

쐌

The DTC will not be displayed after the A counter reaches 40.

<Driving Pattern B>

NHEC0033S0602

Driving pattern B means the vehicle operation as follows:
All components and systems should be monitored at least once by the OBD system.

쐌

The B counter will be cleared when the malfunction is detected once regardless of the driving pattern.

쐌

The B counter will be counted up when driving pattern B is satisfied without any malfunctions.

쐌

The MIL will go off when the B counter reaches 3 (*2 in “OBD System Operation Chart”, EC-94).

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

OBD System Operation Chart (Cont’d)

EC-98

CONSULT-II

=NHEC0034

INSPECTION PROCEDURE

NHEC0034S01

CAUTION:

If CONSULT-II is used with no connection of CONSULT-II
CONVERTER, malfunction might be detected in self-diagnosis
depending on control unit which carry out CAN communica-
tion.

SEF289X

Turn ignition switch OFF.

Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector, which is located under LH dash panel near the
fuse box cover.

MBIB0233E

Turn ignition switch ON.

Touch “START” (NISSAN BASED VHCL).

SEF948Y

Touch “ENGINE”.
If “ENGINE” is not indicated, go to GI-42, “CONSULT-II Data
Link Connector (DLC) Circuit”.

PBIB2308E

Perform each diagnostic test mode according to each service
procedure.

For further information, see the CONSULT-II Operation
Manual.

IDX

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

CONSULT-II

EC-99

ENGINE CONTROL COMPONENT PARTS/CONTROL
SYSTEMS APPLICATION

NHEC0034S02

Item

DIAGNOSTIC TEST MODE

WORK

SUP-

PORT

SELF-DIAGNOSTIC

RESULTS

DATA

MONI-

TOR

DATA

MONI-

TOR

(SPEC)

ACTIVE

TEST

DTC & SRT

CONFIRMATION

DTC*1

FREEZE

FRAME
DATA*2

SRT

STATUS

DTC

WORK

SUP-

PORT

ENGINE

CONTROL

COMPONENT

ARTS

INPUT

Crankshaft position sensor
(POS)

Camshaft position sensor
(PHASE)

Mass air flow sensor

Engine coolant temperature sen-
sor

Heated oxygen sensor 1

Heated oxygen sensor 2

Vehicle speed sensor

Accelerator pedal position sensor

Throttle position sensor

Fuel tank temperature sensor

EVAP control system pressure
sensor

Absolute pressure sensor

Intake air temperature sensor

Knock sensor

Refrigerant pressure sensor

Ignition switch (start signal)

Closed throttle position switch
(accelerator pedal position sen-
sor signal)

Air conditioner switch

Park/neutral position (PNP)
switch

Power steering pressure sensor

Battery voltage

Load signal

Fuel level sensor

ASCD steering switch

ASCD brake switch

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

CONSULT-II (Cont’d)

EC-100

Item

DIAGNOSTIC TEST MODE

WORK

SUP-

PORT

SELF-DIAGNOSTIC

RESULTS

DATA

MONI-

TOR

DATA

MONI-

TOR

(SPEC)

ACTIVE

TEST

DTC & SRT

CONFIRMATION

DTC*1

FREEZE

FRAME
DATA*2

SRT

STATUS

DTC

WORK

SUP-

PORT

ENGINE

CONTROL

COMPONENT

ARTS

OUTPUT

Injectors

Power transistor (Ignition timing)

Throttle control motor relay

EVAP canister purge volume
control solenoid valve

Air conditioner relay

Fuel pump relay

Heated oxygen sensor 1 heater

Heated oxygen sensor 2 heater

EVAP canister vent control valve

Vacuum cut valve bypass valve

VIAS control solenoid valve

Intake valve timing control sole-
noid valve

Electronic controlled engine
mount

Calculated load value

X: Applicable
*1: This item includes 1st trip DTCs.
*2: This mode includes 1st trip freeze frame data or freeze frame data. The items appear on CONSULT-II screen in freeze frame data
mode only if a 1st trip DTC or DTC is detected. For details, refer to EC-77.

IDX

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

CONSULT-II (Cont’d)

EC-101

FUNCTION

=NHEC0034S03

Diagnostic test mode

Function

WORK SUPPORT

This mode enables a technician to adjust some devices faster and more accurately by following the
indications on the CONSULT-II unit.

SELF-DIAG RESULTS

Self-diagnostic results such as 1st trip DTC, DTCs and 1st trip freeze frame data or freeze frame
data can be read and erased quickly.*1

DATA MONITOR

Input/Output data in the ECM can be read.

DATA MONITOR (SPEC)

Input/Output specification of the basic fuel schedule, AFM, A/F feedback control value and the
other data monitor items can be read.

CAN diagnostic support
monitor

The results of transmit/receive diagnosis of CAN communication can be read.

ACTIVE TEST

Diagnostic Test Mode in which CONSULT-II drives some actuators apart from the ECMs and also
shifts some parameters in a specified range.

FUNCTION TEST

Conducted by CONSULT-II instead of a technician to determine whether each system is “OK” or
“NG”.

DTC & SRT CONFIRMA-
TION

The status of system monitoring tests and the self-diagnosis status/result can be confirmed.

ECM PART NUMBER

ECM part number can be read.

*1 The following emission-related diagnostic information is cleared when the ECM memory is erased.
1)

Diagnostic trouble codes

1st trip diagnostic trouble codes

Freeze frame data

1st trip freeze frame data

System readiness test (SRT) codes

Test values

Others

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

CONSULT-II (Cont’d)

EC-102

WORK SUPPORT MODE

=NHEC0034S04

WORK ITEM

CONDITION

USAGE

FUEL PRESSURE RELEASE

쐌

FUEL PUMP WILL STOP BY TOUCHING “START”
DURING IDLING.
CRANK A FEW TIMES AFTER ENGINE STALLS.

When releasing fuel pressure
from fuel line

IDLE AIR VOL LEARN

쐌

THE IDLE AIR VOLUME THAT KEEPS THE ENGINE
WITHIN THE SPECIFIED RANGE IS MEMORIZED IN
ECM.

When learning the idle air volume

SELF-LEARNING CONT

쐌

THE COEFFICIENT OF SELF-LEARNING CONTROL
MIXTURE RATIO RETURNS TO THE ORIGINAL
COEFFICIENT.

When clearing the coefficient of
self-learning control value

EVAP SYSTEM CLOSE

OPEN THE VACUUM CUT VALVE BYPASS VALVE AND
CLOSE THE EVAP CANISTER VENT CONTROL VALVE
IN ORDER TO MAKE EVAP SYSTEM CLOSE UNDER
THE FOLLOWING CONDITIONS.

쐌

IGN SW “ON”

쐌

ENGINE NOT RUNNING

쐌

AMBIENT TEMPERATURE IS ABOVE 0°C (32°F).

쐌

NO VACUUM AND NO HIGH PRESSURE IN EVAP
SYSTEM

쐌

TANK FUEL TEMP. IS MORE THAN 0°C (32°F).

쐌

WITHIN 10 MINUTES AFTER STARTING “EVAP SYS-
TEM CLOSE”

쐌

WHEN TRYING TO EXECUTE “EVAP SYSTEM
CLOSE” UNDER THE CONDITION EXCEPT ABOVE,
CONSULT-II WILL DISCONTINUE IT AND DISPLAY
APPROPRIATE INSTRUCTION.
NOTE:
WHEN STARTING ENGINE, CONSULT-II MAY DIS-
PLAY “BATTERY VOLTAGE IS LOW. CHARGE
BATTERY”, EVEN IN USING CHARGED BATTERY.

When detecting EVAP vapor leak
point of EVAP system

TARGET IGN TIM ADJ*

쐌

IDLE CONDITION

쐌

When adjusting target ignition
timing
After adjustment, confirm target
ignition timing with a timing
light.

쐌

If once the “TARGET IDLE
RPM ADJ” has been done, the
Idle Air Volume Learning proce-
dure will not be completed.

TARGET IDLE RPM ADJ*

쐌

IDLE CONDITION

When setting target idle speed

*: This function is not necessary in the usual service procedure.

SELF-DIAGNOSTIC MODE

NHEC0034S05

DTC and 1st Trip DTC

NHEC0034S0501

Regarding items of “DTC and 1st trip DTC”, refer to “TROUBLE
DIAGNOSIS — INDEX” (See EC-9.)

Freeze Frame Data and 1st Trip Freeze Frame Data

NHEC0034S0502

Freeze frame data

item*1

Description

DIAG TROUBLE
CODE
[PXXXX]

쐌

The engine control component part/control system has a trouble code, it is displayed as “PXXXX”.
(Refer to “TROUBLE DIAGNOSIS — INDEX”, EC-9.)

IDX

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

CONSULT-II (Cont’d)

EC-103

Freeze frame data

item*1

Description

FUEL SYS-B1

쐌

“Fuel injection system status” at the moment a malfunction is detected is displayed.

쐌

One mode in the following is displayed.
“MODE 2”: Open loop due to detected system malfunction
“MODE 3”: Open loop due to driving conditions (power enrichment, deceleration enrichment)
“MODE 4”: Closed loop - using oxygen sensor(s) as feedback for fuel control
“MODE 5”: Open loop - has not yet satisfied condition to go to closed loop

FUEL SYS-B2

CAL/LD VALUE [%]

쐌

The calculated load value at the moment a malfunction is detected is displayed.

COOLANT TEMP [°C]
or [°F]

쐌

The engine coolant temperature at the moment a malfunction is detected is displayed.

S-FUEL TRIM-B1 [%]

쐌

“Short-term fuel trim” at the moment a malfunction is detected is displayed.

쐌

The short-term fuel trim indicates dynamic or instantaneous feedback compensation to the base fuel
schedule.

S-FUEL TRIM-B2 [%]

L-FUEL TRIM-B1 [%]

쐌

“Long-term fuel trim” at the moment a malfunction is detected is displayed.

쐌

The long-term fuel trim indicates much more gradual feedback compensation to the base fuel schedule
than short-term fuel trim.

L-FUEL TRIM-B2 [%]

ENGINE SPEED
[rpm]

쐌

The engine speed at the moment a malfunction is detected is displayed.

VEHICL SPEED
[km/h] or [mph]

쐌

The vehicle speed at the moment a malfunction is detected is displayed.

B/FUEL SCHDL
[msec]

쐌

The base fuel schedule at the moment a malfunction is detected is displayed.

INT/A TEMP SE [°C]
or [°F]

쐌

The intake air temperature at the moment a malfunction is detected is displayed.

*1: The items are the same as those of 1st trip freeze frame data.

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

CONSULT-II (Cont’d)

EC-104

DATA MONITOR MODE

=NHEC0034S06

Monitored item [Unit]

ECM

INPUT

SIG-

NALS

MAIN

SIG-

NALS

Description

Remarks

ENG SPEED [rpm]

쎻

쐌

Indicates the engine speed computed from
the signal of the crankshaft position sensor
(POS) and camshaft position sensor
(PHASE)

쐌

Accuracy becomes poor if engine
speed drops below the idle rpm.

쐌

If the signal is interrupted while the
engine is running, an abnormal
value may be indicated.

MAS A/F SE-B1 [V]

쎻

쐌

The signal voltage of the mass air flow sen-
sor is displayed.

쐌

When the engine is stopped, a cer-
tain value is indicated.

COOLAN TEMP/S
[°C] or [°F]

쎻

쐌

The engine coolant temperature (deter-
mined by the signal voltage of the engine
coolant temperature sensor) is displayed.

쐌

When the engine coolant tempera-
ture sensor is open or short-
circuited, ECM enters fail-safe
mode. The engine coolant tempera-
ture determined by the ECM is dis-
played.

HO2S1 (B1) [V]

쎻

쐌

The signal voltage of the heated oxygen
sensor 1 is displayed.

HO2S1 (B2) [V]

쎻

HO2S2 (B1) [V]

쎻

쐌

The signal voltage of the heated oxygen
sensor 2 is displayed.

HO2S2 (B2) [V]

쎻

HO2S1 MNTR (B1)
[RICH/LEAN]

쎻

쐌

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.

쐌

After turning ON the ignition switch,
“RICH” is displayed until air-fuel
mixture ratio feedback control
begins.

쐌

When the air-fuel ratio feedback is
clamped, the value just before the
clamping is displayed continuously.

HO2S1 MNTR (B2)
[RICH/LEAN]

쎻

HO2S2 MNTR (B1)
[RICH/LEAN]

쎻

쐌

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.

쐌

When the engine is stopped, a cer-
tain value is indicated.

HO2S2 MNTR (B2)
[RICH/LEAN]

쎻

VHCL SPEED SE
[km/h] or [mph]

쎻

쐌

The vehicle speed computed from the
vehicle speed sensor signal is displayed.

BATTERY VOLT [V]

쎻

쐌

The power supply voltage of ECM is dis-
played.

ACCEL SEN 1 [V]

쎻

쐌

The accelerator pedal position sensor signal
voltage is displayed.

쐌

ACCEL SEN 2 signal is converted
by ECM internally. Thus, it differs
from ECM terminal voltage signal.

ACCEL SEN 2 [V]

쎻

THRTL SEN 1 [V]

쎻

쐌

The throttle position sensor signal voltage is
displayed.

쐌

THRTL SEN 2 signal is converted
by ECM internally. Thus, it differs
from ECM terminal voltage signal.

THRTL SEN 2 [V]

쎻

FUEL T/TMP SE
[°C] or [°F]

쎻

쐌

The fuel temperature judged from the fuel
tank temperature sensor signal voltage is
displayed.

INT/A TEMP SE
[°C] or [°F]

쎻

쐌

The intake air temperature determined by
the signal voltage of the intake air tempera-
ture sensor is indicated.

EVAP SYS PRES [V]

쎻

쐌

The signal voltage of EVAP control system
pressure sensor is displayed.

IDX

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

CONSULT-II (Cont’d)

EC-105

Monitored item [Unit]

ECM

INPUT

SIG-

NALS

MAIN

SIG-

NALS

Description

Remarks

ABSOL PRES/SE [V]

쎻

쐌

The signal voltage of the absolute pressure
sensor is displayed.

FUEL LEVEL SE [V]

쎻

쐌

The signal voltage of the fuel level sensor is
displayed.

START SIGNAL
[ON/OFF]

쎻

쐌

Indicates [ON/OFF] condition from the
starter signal.

쐌

After starting the engine, [OFF] is
displayed regardless of the starter
signal.

CLSD THL POS
[ON/OFF]

쎻

쐌

Indicates idle position [ON/OFF] computed
by ECM according to the accelerator pedal
position sensor signal.

AIR COND SIG
[ON/OFF]

쎻

쐌

Indicates [ON/OFF] condition of the air con-
ditioner switch as determined by the air
conditioner signal.

P/N POSI SW
[ON/OFF]

쎻

쐌

Indicates [ON/OFF] condition from the park/
neutral position (PNP) switch signal.

PW/ST SIGNAL
[ON/OFF]

쎻

쐌

[ON/OFF] condition of the power steering
system (determined by the power steering
pressure sensor signal) is indicated.

LOAD SIGNAL
[ON/OFF]

쎻

쐌

Indicates [ON/OFF] condition from the elec-
trical load signal and/or lighting switch.
ON ... rear defogger is operating and/or
lighting switch is on.
OFF ... rear defogger is not operating and
lighting switch is not on.

IGNITION SW
[ON/OFF]

쎻

쐌

Indicates [ON/OFF] condition from ignition
switch.

BRAKE SW
[ON/OFF]

쐌

Indicates [ON/OFF] condition from the stop
lamp switch signal.

INJ PULSE-B1
[msec]

쎻

쐌

Indicates the actual fuel injection pulse
width compensated by ECM according to
the input signals.

쐌

When the engine is stopped, a cer-
tain computed value is indicated.

INJ PULSE-B2
[msec]

B/FUEL SCHDL
[msec]

쎻

쐌

“Base fuel schedule” indicates the fuel injec-
tion pulse width programmed into ECM,
prior to any learned on board correction.

IGN TIMING [BTDC]

쎻

쐌

Indicates the ignition timing computed by
ECM according to the input signals.

쐌

When the engine is stopped, a cer-
tain value is indicated.

PURG VOL C/V [%]

쐌

Indicates the EVAP canister purge volume
control solenoid valve control value com-
puted by the ECM according to the input
signals.

쐌

The opening becomes larger as the value
increases.

A/F ALPHA-B1 [%]

쎻

쐌

The mean value of the air-fuel ratio feed-
back correction factor per cycle is indicated.

쐌

When the engine is stopped, a cer-
tain value is indicated.

쐌

This data also includes the data for
the air-fuel ratio learning control.

A/F ALPHA-B2 [%]

쎻

AIR COND RLY
[ON/OFF]

쎻

쐌

The air conditioner relay control condition
(determined by ECM according to the input
signal) is indicated.

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

CONSULT-II (Cont’d)

EC-106

Monitored item [Unit]

ECM

INPUT

SIG-

NALS

MAIN

SIG-

NALS

Description

Remarks

FUEL PUMP RLY
[ON/OFF]

쎻

쐌

Indicates the fuel pump relay control condi-
tion determined by ECM according to the
input signals.

VENT CONT/V
[ON/OFF]

쐌

The control condition of the EVAP canister
vent control valve (determined by ECM
according to the input signal) is indicated.

쐌

ON ... Closed
OFF ... Open

HO2S1 HTR (B1)
[ON/OFF]

쐌

Indicates [ON/OFF] condition of heated oxy-
gen sensor 1 heater determined by ECM
according to the input signals.

HO2S1 HTR (B2)
[ON/OFF]

HO2S2 HTR (B1)
[ON/OFF]

쐌

Indicates [ON/OFF] condition of heated oxy-
gen sensor 2 heater determined by ECM
according to the input signals.

HO2S2 HTR (B2)
[ON/OFF]

VC/V BYPASS/V
[ON/OFF]

쐌

The control condition of the vacuum cut
valve bypass valve (determined by ECM
according to the input signal) is indicated.

쐌

ON ... Open
OFF ... Closed

CAL/LD VALUE [%]

쐌

“Calculated load value” indicates the value
of the current airflow divided by peak air-
flow.

MASS AIRFLOW
[g·m/s]

쐌

Indicates the mass airflow computed by
ECM according to the signal voltage of the
mass airflow sensor.

INT/V TIM (B1) [°CA]

쐌

Indicate [°CA] of intake camshaft advanced
angle.

INT/V TIM (B2) [°CA]

INT/V SOL (B1) [%]

쐌

The control condition of the intake valve
timing control solenoid valve is indicated.

INT/V SOL (B2) [%]

TRVL AFTER MIL
[km] or [Mile]

쐌

Distance traveled while MIL is activated

VIAS S/V
[ON/OFF]

쐌

The control condition of the VIAS control
solenoid valve (determined by ECM accord-
ing to the input signal) is indicated.

쐌

OFF ... VIAS control solenoid valve is not
operating.
ON ... VIAS control solenoid valve is operat-
ing.

IDL A/V LEARN

쐌

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.

IDX

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

CONSULT-II (Cont’d)

EC-107

Monitored item [Unit]

ECM

INPUT

SIG-

NALS

MAIN

SIG-

NALS

Description

Remarks

ENGINE MOUNT
[IDLE/TRVL]

쐌

The control condition of the electronic con-
trolled engine mount (computed by ECM
according to the input signals) is indicated.

쐌

IDLE ... Idle condition

쐌

TRVL ... Driving condition

COOLING FAN
[HI/LOW/OFF]

쐌

Indicates the control condition of the cooling
fan (determined by ECM according to the
input signal).
HIGH ... High speed operation
LOW ... Low speed operation
OFF ... Stop

THRTL RELAY
[ON/OFF]

쐌

Indicates the throttle control motor relay
control condition determined by the ECM
according to the input signals.

AC PRESS SEN
[V]

쐌

The signal voltage from the refrigerant pres-
sure sensor is displayed.

BRAKE SW 1
[ON/OFF]

쐌

Indicates [ON/OFF] condition from ASCD
brake switch signal, and park/neutral posi-
tion switch signal.

BRAKE SW 2
[ON/OFF]

쐌

Indicates [ON/OFF] condition of stop lamp
switch signal.

MAIN SW
[ON/OFF]

쐌

Indicates [ON/OFF] condition from CRUISE
switch signal.

CANCEL SW
[ON/OFF]

쐌

Indicates [ON/OFF] condition from CANCEL
switch signal.

RESUME/ACC SW
[ON/OFF]

쐌

Indicates [ON/OFF] condition from ACCEL/
RES switch signal.

SET SW
[ON/OFF]

쐌

Indicates [ON/OFF] condition from COAST/
SET switch signal.

VHCL SPEED SE
[km/h] or [mph]

쐌

The present vehicle speed computed from
the vehicle speed signal sent from combina-
tion meter is displayed.

SET VHCL SPD
[km/h] or [mph]

쐌

The preset vehicle speed is displayed.

VHCL SPD CUT
[NON/CUT]

쐌

Indicates the vehicle cruise condition.
NON...Vehicle speed is maintained at the
ASCD set speed.
CUT...Vehicle speed decreased to exces-
sively low compared with the ASCD set
speed, and ASCD operation is cut off.

LO SPEED CUT
[NON/CUT]

쐌

AT OD MONITOR
[ON/OFF]

쐌

Indicates [ON/OFF] condition of A/T O/D
according to the input signal from the TCM.

AT OD CANCEL
[ON/OFF]

쐌

Indicates [ON/OFF] condition of A/T OD
cancel signal sent from the TCM.

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

CONSULT-II (Cont’d)

EC-108

Monitored item [Unit]

ECM

INPUT

SIG-

NALS

MAIN

SIG-

NALS

Description

Remarks

CRUISE LAMP
[ON/OFF]

쐌

Indicates [ON/OFF] condition CRUISE lamp
determined by the ECM according to the
input signals.

SET LAMP
[ON/OFF]

쐌

Indicates [ON/OFF] condition of SET lamp
determined by the ECM according to the
input signals.

Voltage [V]

쐌

Voltage, frequency, duty cycle or pulse
width measured by the probe.

쐌

Pulse width, frequency or duty
cycle measured by the pulse probe.
Only

″

is displayed if item is

unable to be measured.

쐌

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

NOTE:

쐌

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

DATA MONITOR (SPEC) MODE

NHEC0034S11

Monitored item [Unit]

ECM
input

signals

Main

signals

Description

Remarks

MAS A/F SE-B1 [V]

쎻

쐌

The signal voltage of the mass air flow sen-
sor specification is displayed.

쐌

When the engine is running, specifi-
cation range is indicated.

B/FUEL SCHDL
[msec]

쐌

“Base fuel schedule” indicates the fuel injec-
tion pulse width programmed into ECM,
prior to any learned on board correction.

쐌

When the engine is running, specifi-
cation range is indicated.

A/F ALPHA-B1 [%]

쎻

쐌

Indicates the mean value of the air-fuel ratio
feedback correction factor per cycle.

쐌

When the engine is running, specifi-
cation range is indicated.

쐌

This data also includes the data for
the air-fuel ratio learning control.

A/F ALPHA-B2 [%]

쎻

NOTE:

쐌

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

ACTIVE TEST MODE

NHEC0034S07

TEST ITEM

CONDITION

JUDGEMENT

CHECK ITEM (REMEDY)

FUEL INJECTION

쐌

Engine: Return to the original
trouble condition

쐌

Change the amount of fuel injec-
tion using CONSULT-II.

If trouble symptom disappears, see
CHECK ITEM.

쐌

Harness and connector

쐌

Fuel injectors

쐌

Heated oxygen sensor

IGNITION TIMING

쐌

Engine: Return to the original
trouble condition

쐌

Timing light: Set

쐌

Retard the ignition timing using
CONSULT-II.

If trouble symptom disappears, see
CHECK ITEM.

쐌

Adjust initial ignition timing

POWER BAL-
ANCE

쐌

Engine: After warming up, idle
the engine.

쐌

A/C switch “OFF”

쐌

Shift lever “N”

쐌

Cut off each injector signal one
at a time using CONSULT-II.

Engine runs rough or dies.

쐌

Harness and connector

쐌

Compression

쐌

Injectors

쐌

Power transistor

쐌

Spark plugs

쐌

Ignition coils

IDX

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

CONSULT-II (Cont’d)

EC-109

TEST ITEM

CONDITION

JUDGEMENT

CHECK ITEM (REMEDY)

COOLING FAN*

쐌

Ignition switch: ON

쐌

Turn the cooling fan “ON” and
“OFF” using CONSULT-II.

Cooling fan moves and stops.

쐌

Harness and connector

쐌

Cooling fan motor

쐌

Cooling fan relay

ENG COOLANT
TEMP

쐌

Engine: Return to the original
trouble condition

쐌

Change the engine coolant tem-
perature using CONSULT-II.

If trouble symptom disappears, see
CHECK ITEM.

쐌

Harness and connector

쐌

Engine coolant temperature sen-
sor

쐌

Fuel injectors

FUEL PUMP
RELAY

쐌

Ignition switch: ON
(Engine stopped)

쐌

Turn the fuel pump relay “ON”
and “OFF” using CONSULT-II
and listen to operating sound.

Fuel pump relay makes an operat-
ing sound.

쐌

Harness and connector

쐌

Fuel pump relay

VIAS SOL VALVE

쐌

Ignition switch: ON

쐌

Turn solenoid valve “ON” and
“OFF” with CONSULT-II and lis-
ten for operating sound.

Solenoid valve makes an operating
sound.

쐌

Harness and connector

쐌

Solenoid valve

ENGINE MOUNT-
ING

쐌

Engine: After warming up, run
engine at idle speed.

쐌

Turn electronic controlled engine
mount “IDLE” and “TRVL” with
the CONSULT-II.

Electronic controlled engine mount
makes an operating sound.

쐌

Harness and connector

쐌

Electronic controlled engine
mount

PURG VOL
CONT/V

쐌

Engine: After warming up, run
engine at 1,500 rpm.

쐌

Change the EVAP canister purge
volume control solenoid valve
opening percent using CON-
SULT-II.

Engine speed changes according
to the opening percent.

쐌

Harness and connector

쐌

Solenoid valve

FUEL/T TEMP
SEN

쐌

Change the fuel tank temperature using CONSULT-II.

VENT
CONTROL/V

쐌

Ignition switch: ON
(Engine stopped)

쐌

Turn solenoid valve “ON” and
“OFF” with the CONSULT-II and
listen to operating sound.

Solenoid valve makes an operating
sound.

쐌

Harness and connector

쐌

Solenoid valve

VC/V BYPASS/V

쐌

Ignition switch: ON
(Engine stopped)

쐌

Turn solenoid valve “ON” and
“OFF” with the CONSULT-II and
listen to operating sound.

Solenoid valve makes an operating
sound.

쐌

Harness and connector

쐌

Solenoid valve

V/T ASSIGN
ANGLE

쐌

Engine: After warming up, hold
engine speed at 2,500 rpm.

쐌

Change the intake valve timing
using CONSULT-II.

If trouble symptom disappears, see
CHECK ITEM.

쐌

Harness and connector

쐌

Intake valve timing control sole-
noid valve

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

DTC & SRT CONFIRMATION MODE

NHEC0034S08

SRT STATUS Mode

NHEC0034S0801

For details, refer to “SYSTEM READINESS TEST (SRT) CODE”,
EC-77.

SRT Work Support Mode

NHEC0034S0803

This mode enables a technician to drive a vehicle to set the SRT
while monitoring the SRT status.

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

CONSULT-II (Cont’d)

EC-110

DTC Work Support Mode

NHEC0034S0802

Test mode

Test item

Condition

Reference page

EVAPORATIVE SYSTEM

PURGE FLOW P0441

Refer to corresponding
trouble diagnosis for
DTC.

EC-331

EVP SML LEAK P0442/P1442

EC-341

EVP V/S LEAK P0456/P1456

EC-397

PURG VOL CN/V P1444

EC-538

VC CUT/V BP/V P1491

EC-593

HO2S1

HO2S1 (B1) P0133

HO2S1 (B1) P0134

HO2S1 (B1) P1143

HO2S1 (B1) P1144

HO2S1 (B2) P0153

HO2S1 (B2) P0154

HO2S1 (B2) P1163

HO2S1 (B2) P1164

HO2S2

HO2S2 (B1) P0139

HO2S2 (B1) P1146

HO2S2 (B1) P1147

HO2S2 (B2) P0159

HO2S2 (B2) P1166

HO2S2 (B2) P1167

SEF705Y

SEF707X

REAL TIME DIAGNOSIS IN DATA MONITOR MODE
(RECORDING VEHICLE DATA)

NHEC0034S10

CONSULT-II has two kinds of triggers and they can be selected by
touching “SETTING” in “DATA MONITOR” mode.
1)

“AUTO TRIG” (Automatic trigger):

쐌

The malfunction will be identified on the CONSULT-II screen in
real time.
In other words, DTC/1st trip DTC and malfunction item will be
displayed if the malfunction is detected by ECM.
At the moment a malfunction is detected by ECM, “MONITOR”
in “DATA MONITOR” screen is changed to “Recording Data ...
xx%” as shown at left, and the data after the malfunction detec-
tion is recorded. Then when the percentage reached 100%,
“REAL-TIME DIAG” screen is displayed. If “STOP” is touched
on the screen during “ Recording Data ... xx%”, “REAL-TIME
DIAG” screen is also displayed.
The recording time after the malfunction detection and the
recording speed can be changed by “TRIGGER POINT” and
“Recording Speed”. Refer to CONSULT-II OPERATION
MANUAL.

“MANU TRIG” (Manual trigger):

쐌

DTC/1st trip DTC and malfunction item will not be displayed

IDX

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

CONSULT-II (Cont’d)

EC-111

automatically on CONSULT-II screen even though a malfunc-
tion is detected by ECM.
DATA MONITOR can be performed continuously even though
a malfunction is detected.

Use these triggers as follows:
1)

“AUTO TRIG”

쐌

While trying to detect the DTC/1st trip DTC by performing the
“DTC Confirmation Procedure”, be sure to select to “DATA
MONITOR (AUTO TRIG)” mode. You can confirm the malfunc-
tion at the moment it is detected.

쐌

While narrowing down the possible causes, CONSULT-II
should be set in “DATA MONITOR (AUTO TRIG)” mode, espe-
cially in case the incident is intermittent.
When you are inspecting the circuit by gently shaking (or twist-
ing) the suspicious connectors, components and harness in
the “DTC Confirmation Procedure”, the moment a malfunction
is found the DTC/1st trip DTC will be displayed. (Refer to
GI-21, “Incident Simulation Tests”.)

“MANU TRIG”

쐌

If the malfunction is displayed as soon as “DATA MONITOR”
is selected, reset CONSULT-II to “MANU TRIG”. By selecting
“MANU TRIG” you can monitor and store the data. The data
can be utilized for further diagnosis, such as a comparison with
the value for the normal operating condition.

SEC221D

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

CONSULT-II (Cont’d)

EC-112

Infiniti I30. Emission Control System (2003 year). Manual - part 7