Nissan Almera Tino V10 (2001 year). Manual

registration of all NATS ignition key IDs must be carried
out with CONSULT-II using NATS program card.
Therefore, be sure to receive all keys from vehicle owner.
Regarding the procedure of NATS initialization and NATS
ignition key ID registration, refer to CONSULT-II operation
manual, NATS.

Malfunction Indicator (MI)

DESCRIPTION

NLEC0032

SAT652J

The MI is located on the instrument panel.
1. The MI will light up when the ignition switch is turned ON without the engine running. This is a bulb check.

If the MI does not light up, refer to EL-155, “WARNING LAMPS” or see EC-545.

2. When the engine is started, the MI should go off.

If the MI remains on, the on board diagnostic system has detected an engine system malfunction.

On Board Diagnostic System Function

NLEC0032S01

The on board diagnostic system has the following four functions.
Diagnostic Test Mode I
1. BULB CHECK:

This function checks the MI bulb for damage (blown, open circuit, etc.).
If the MI does not come on, check MI circuit and ECM test mode selector. (See the following page.)

2. MALFUNCTION WARNING:

MI Condition

ON When the malfunction is detected or the ECM’s CPU is malfunctioning.

OFF No malfunction.

Diagnostic Test Mode II
3. SELF-DIAGNOSTIC RESULTS:

This function allows DTCs and 1st trip DTCs to be read.

4. HEATED OXYGEN SENSOR 1 MONITOR (FRONT):

This function allows the fuel mixture condition (lean or rich), monitored by heated oxygen sensor 1 (front),
to be read.

MI Flashing without DTC

NLEC0032S0101

If the ECM is in Diagnostic Test Mode II, MI may flash when engine is running. In this case, check ECM test
mode following “How to Switch Diagnostic Test Modes”.
How to switch the diagnostic test (function) modes, and details of the above functions are described later.
(Refer to EC-75.)

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

QG18DE

NATS (Nissan Anti-theft System) (Cont’d)

EC-73

Diagnostic Test Mode I — Bulb Check

NLEC0032S03

In this mode, the MI on the instrument panel should stay ON. If it remains OFF, check the MI bulb. Refer to
EL-155, “WARNING LAMPS” or see EC-545.

Diagnostic Test Mode I — Malfunction Warning

NLEC0032S04

MI Condition

ON When the malfunction is detected or the ECM’s CPU is malfunctioning.

OFF No malfunction.

These DTC numbers are clarified in Diagnostic Test Mode II (SELF-DIAGNOSTIC RESULTS).

Diagnostic Test Mode II — Self-diagnostic Results

NLEC0032S05

In this mode, the DTC and 1st trip DTC are indicated by the number of blinks of the MI as shown below.
The DTC and 1st trip DTC are displayed at the same time. If the MI does not illuminate in diagnostic test mode
I (Malfunction warning), all displayed items are 1st trip DTCs. If only one code is displayed when the MI illu-
minates in diagnostic test mode II (SELF-DIAGNOSTIC RESULTS), it is a DTC; if two or more codes are
displayed, they may be either DTCs or 1st trip DTCs. DTC No. is same as that of 1st trip DTC. These uni-
dentified codes can be identified by using the CONSULT-II or GST. A DTC will be used as an example for how
to read a code.

SEF952W

A particular trouble code can be identified by the number of four-digit numeral flashes. The “zero” is indicated
by the number of ten flashes. The length of time the 1000th-digit numeral flashes on and off is 1.2 seconds
consisting of an ON (0.6-second)-OFF (0.6-second) cycle.
The 100th-digit numeral and lower digit numerals consist of a 0.3-second ON and 0.3-second OFF cycle.
A change from one digit numeral to another occurs at an interval of 1.0 second OFF. In other words, the lat-
ter numeral appears on the display 1.3 seconds after the former numeral has disappeared.
A change from one trouble code to another occurs at an interval of 1.8 second off.
In this way, all the detected malfunctions are classified by their DTC numbers. The DTC “0000” refers to no
malfunction. (See TROUBLE DIAGNOSIS — INDEX, EC-16.)
How to Erase Diagnostic Test Mode II (Self-diagnostic results)

NLEC0032S0501

The DTC can be erased from the backup memory in the ECM when the diagnostic test mode is changed from
Diagnostic Test Mode II to Diagnostic Test Mode I. (Refer to “How To Switch Diagnostic Test Modes”, EC-75.)

If the battery is disconnected, the DTC will be lost from the backup memory after approx. 24 hours.

Be careful not to erase the stored memory before starting trouble diagnoses.

Diagnostic Test Mode II — Heated Oxygen Sensor 1 Monitor (Front)

NLEC0032S06

In this mode, the MI displays the condition of the fuel mixture (lean or rich) which is monitored by the heated
oxygen sensor 1 (front).

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

QG18DE

Malfunction Indicator (MI) (Cont’d)

EC-76

Fuel mixture condition in the exhaust gas

Air fuel ratio feedback control condition

Lean

Closed loop system

OFF

Rich

*Remains ON or OFF

Any condition

Open loop system

*: Maintains conditions just before switching to open loop.

To check the heated oxygen sensor 1 (front) function, start engine in the Diagnostic Test Mode II and warm
it up until engine coolant temperature indicator points to the middle of the gauge.
Next run engine at about 2,000 rpm for about 2 minutes under no-load conditions. Then make sure that the
MI comes ON more than 5 times within 10 seconds with engine running at 2,000 rpm under no-load.

OBD System Operation Chart (With Euro-OBD
Models Only)

NLEC0033

RELATIONSHIP BETWEEN MI, 1ST TRIP DTC, DTC, AND DETECTABLE ITEMS

NLEC0033S01

When a malfunction is detected for the first time, the 1st trip DTC and the 1st trip freeze frame data are
stored in the ECM memory.

When the same malfunction is detected in two consecutive trips, the DTC and the freeze frame data are
stored in the ECM memory, and the MI will come on. For details, refer to “Two Trip Detection Logic” on
EC-59.

The MI will go off after the vehicle is driven 3 times with no malfunction. The drive is counted only when
the recorded driving pattern is met (as stored in the ECM). If another malfunction occurs while counting,
the counter will reset.

The DTC and the freeze frame data will be stored until the vehicle is driven 40 times (driving pattern A)
without the same malfunction recurring (except for Misfire and Fuel Injection System). For Misfire and Fuel
Injection System, the DTC and freeze frame data will be stored until the vehicle is driven 80 times (driv-
ing pattern C) without the same malfunction recurring. The “TIME” in “SELF-DIAGNOSTIC RESULTS”
mode of CONSULT-II will count the number of times the vehicle is driven.

The 1st trip DTC is not displayed when the self-diagnosis results in “OK” for the 2nd trip.

SUMMARY CHART

NLEC0033S02

Items

Fuel Injection System

Misfire

Other

MI (goes off)

3 (pattern B)

DTC, Freeze Frame Data (no display)

80 (pattern C)

40 (pattern A)

1st Trip DTC (clear)

1 (pattern C), *1

1 (pattern B)

1st Trip Freeze Frame Data (clear)

*1, *2

1 (pattern B)

For details about patterns “B” and “C” under “Fuel Injection System” and “Misfire”, see EC-79.
For details about patterns “A” and “B” under “Other”, see EC-81.
*1: Clear timing is at the moment OK is detected.
*2: Clear timing is when the same malfunction is detected in the 2nd trip.

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

QG18DE

Malfunction Indicator (MI) (Cont’d)

EC-77

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

NLEC0033S03

SEF392SA

*1: When the same malfunction is

detected in two consecutive trips,
MI will light up.

*2: MI 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 80
times (pattern C) 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: The 1st trip DTC and the 1st trip

freeze frame data will be cleared
at the moment OK is detected.

*7: When the same malfunction is

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

*8: 1st trip DTC will be cleared when

vehicle is driven once (pattern C)
without the same malfunction after
DTC is stored in ECM.

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

QG18DE

OBD System Operation Chart (With Euro-OBD Models Only) (Cont’d)

EC-78

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

NLEC0033S04

Driving Pattern B

NLEC0033S0401

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

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

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

The MI will go off when the B counter reaches 3. (*2 in EC-78)

Driving Pattern C

NLEC0033S0402

Driving pattern C means the vehicle operation as follows:
1) The following conditions should be satisfied at the same time:

Engine speed: (Engine speed in the freeze frame data)

375 rpm

Calculated load value: (Calculated load value in the freeze frame data)

0.1) [%]

Engine coolant temperature (T) condition:

When the freeze frame data shows lower than 70°C (158°F), “T” should be lower than 70°C (158°F).

When the freeze frame data shows higher than or equal to 70°C (158°F), “T” should be higher than or
equal to 70°C (158°F).

Example:
If the stored freeze frame data is as follows:
Engine speed: 850 rpm, Calculated load value: 30%, Engine coolant temperature: 80°C (176°F)
To be satisfied with driving pattern C, the vehicle should run under the following conditions:
Engine speed: 475 - 1,225 rpm, Calculated load value: 27 - 33%, Engine coolant temperature: more than 70°C
(158°F)

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

The C counter will be counted up when driving pattern C is satisfied without the same malfunction.

The DTC will not be displayed after C counter reaches 80.

The 1st trip DTC will be cleared when C counter is counted once without the same malfunction after DTC
is stored in ECM.

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

QG18DE

OBD System Operation Chart (With Euro-OBD Models Only) (Cont’d)

EC-79

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

NLEC0033S05

SEF393SA

*1: When the same malfunction is

detected in two consecutive trips,
MI will light up.

*2: MI 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.

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

QG18DE

OBD System Operation Chart (With Euro-OBD Models Only) (Cont’d)

EC-80

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

NLEC0033S06

Driving Pattern A

NLEC0033S0601

AEC574

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

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

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

Driving Pattern B

NLEC0033S0602

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

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

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

The MI will go off when the B counter reaches 3 (*2 in EC-80).

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

QG18DE

OBD System Operation Chart (With Euro-OBD Models Only) (Cont’d)

EC-81

SEF094Y

CONSULT-II

=NLEC0034

CONSULT-II INSPECTION PROCEDURE

NLEC0034S01

Turn ignition switch OFF.

Connect “CONSULT-II” to data link connector.
(Data link connector is located under lower dash panel near
the fuse box cover.)

PBR455D

Turn ignition switch ON.

Touch “START”.

SEF995X

Touch “ENGINE”.

SEF824Y

Perform each diagnostic test mode according to each service
procedure.

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

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

QG18DE

CONSULT-II

EC-82

ENGINE CONTROL COMPONENT PARTS/CONTROL
SYSTEMS APPLICATION

NLEC0034S02

Item

DIAGNOSTIC TEST MODE

WORK

SUP-

PORT

SELF-DIAGNOS-

TIC RESULTS

DATA

MONI-

TOR

DATA

MONI-

TOR

(SPEC)

ACTIVE

TEST

DTC & SRT

CONFIRMATION

DTC*1

FREEZE

FRAME
DATA*2

SRT

STA-

TUS

DTC

WORK

SUP-

PORT

ENGINE

CONTROL

COMPONENT

ARTS

INPUT

Camshaft position sensor
(PHASE)

Engine

speed

Engine

speed

Engine

speed

Crankshaft position sensor
(POS)

X*3

Mass air flow sensor

Engine coolant temperature
sensor

Heated oxygen sensor 1
(front)

X*3

Heated oxygen sensor 2
(rear)

X*3

Vehicle speed sensor

Throttle position sensor

EGR temperature sensor
(where fitted)

X*3

Intake air temperature sen-
sor

X*3

Knock sensor

Ignition switch (start signal)

Closed throttle position
switch
(where fitted)

X*3

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

Air conditioner switch

Park/Neutral position (PNP)
switch

X*3

Power steering oil pressure
switch

Electrical load

Heater fan switch

Battery voltage

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

QG18DE

CONSULT-II (Cont’d)

EC-83

Item

DIAGNOSTIC TEST MODE

WORK

SUP-

PORT

SELF-DIAGNOS-

TIC RESULTS

DATA

MONI-

TOR

DATA

MONI-

TOR

(SPEC)

ACTIVE

TEST

DTC & SRT

CONFIRMATION

DTC*1

FREEZE

FRAME
DATA*2

SRT

STA-

TUS

DTC

WORK

SUP-

PORT

ENGINE

CONTROL

COMPONENT

ARTS

OUT-

PUT

Injectors

Power transistor (Ignition
timing)

X*3

(misfire)

IACV-AAC valve

X*3

Intake valve timing control
solenoid valve

EVAP canister purge volume
control solenoid valve

X*3

Air conditioner relay

Fuel pump relay

EGR volume control valve
(where fitted)

X*3

Heated oxygen sensor 1
heater (front)

X*3

Heated oxygen sensor 2
heater (rear)

X*3

Cooling fan

Swirl control valve control
solenoid valve (where fitted)

X*3

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-61, EC-71.
*3: Not applicable for models without Euro-OBD system

FUNCTION

NLEC0034S03

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-diagnostic 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 specifications of the basic fuel schedule, AFM, A/F feedback control value and the
other data monitor items 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.

DTC and SRT confirmation

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

ECM part number

ECM part numbers can be read.

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

Diagnostic trouble codes

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

QG18DE

CONSULT-II (Cont’d)

EC-84

1st trip diagnostic trouble codes

Freeze frame data

1st trip freeze frame data

System readiness test (SRT) codes

Test values

Distance traveled while MI is activated.

Others

WORK SUPPORT MODE

NLEC0034S04

WORK ITEM

CONDITION

USAGE

TP SW/TP SEN IDLE POSI ADJ

FOLLOW THE BASIC INSPECTION INSTRUCTION IN
THE SERVICE MANUAL.

When adjusting the idle throttle
position

FUEL PRESSURE RELEASE

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

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

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

When clear the coefficient of self-
learnign control value

TARGET IDLE RPM ADJ*

IDLE CONDITION

When setting target idle speed

TARGET IGNITION TIMING ADJ*

IDLE CONDITION

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

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

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

SELF DIAGNOSTIC MODE

NLEC0034S05

DTC and 1st Trip DTC

NLEC0034S0501

Regarding items of “DTC and 1st trip DTC”, refer to
“TROUBLE DIAGNOSIS — INDEX”, EC-16.

Freeze Frame Data and 1st Trip Freeze Frame Data

NLEC0034S0502

Freeze frame data

item*

Description

DIAG TROUBLE
CODE
[PXXXX]

Engine Control component part/control system has a trouble code, it is displayed as “PXXXX”. (Refer
to “Alphabetical & P No. Index for DTC”, EC-16.)

FUEL SYS-B1

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

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

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 TRIM-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 sched-
ule than short-term fuel trim.

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

QG18DE

CONSULT-II (Cont’d)

EC-85

Freeze frame data

item*

Description

S-FUEL TRIM-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.

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.

ABSOL TH·P/S [%]

The throttle valve opening angle at the moment a malfunction is detected is displayed.

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.

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

DATA MONITOR MODE

NLEC0034S06

Monitored item [Unit]

ECM
input

signals

Main

signals

Description

Remarks

ENG SPEED [rpm]

Indicates the engine speed computed from
the POS signal of the crankshaft position
sensor.

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 sen-
sor is displayed.

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

B/FUEL SCHDL
[msec]

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

A/F ALPHA-B1 [%]

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

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

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

COOLAN TEMP/S
[°C] or [°F]

The engine coolant temperature (determined
by the signal voltage of the engine coolant
temperature sensor) is displayed.

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]

The signal voltage of the heated oxygen sen-
sor 1 (front) is displayed.

HO2S2 (B1) [V]

The signal voltage of the heated oxygen sen-
sor 2 (rear) is displayed.

HO2S1 MNTR (B1)
[RICH/LEAN]

Display of heated oxygen sensor 1 (front)
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 mix-
ture ratio feedback control begins.

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

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

QG18DE

CONSULT-II (Cont’d)

EC-86

Monitored item [Unit]

ECM
input

signals

Main

signals

Description

Remarks

HO2S2 MNTR (B1)
[RICH/LEAN]

Display of heated oxygen sensor 2 (rear) sig-
nal:
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 cer-
tain value is indicated.

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

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

BATTERY VOLT [V]

The power supply voltage of ECM is dis-
played.

THRTL POS SEN [V]

The throttle position sensor signal voltage is
displayed.

INT/A TEMP SE
[°C] or [°F]

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

EGR TEMP SEN [V]
(where fitted)

The signal voltage of the EGR temperature
sensor is displayed.

START SIGNAL
[ON/OFF]

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

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

CLSD THL POS
[ON/OFF]

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

CLSD THL/P SW
[ON/OFF]
(where fitted)

Indicates mechanical contact [ON/OFF] con-
dition of the closed throttle position switch.

AIR COND SIG
[ON/OFF]

Indicates [ON/OFF] condition of the air condi-
tioner switch as determined by the air condi-
tioning signal.

P/N POSI SW
[ON/OFF]

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

PW/ST SIGNAL
[ON/OFF]

Indicates [ON/OFF] condition of the power
steering oil pressure switch determined by
the power steering oil pressure switch signal.

LOAD SIGNAL
[ON/OFF]

Indicates [ON/OFF] condition from the electri-
cal load signal and/or lighting switch.
ON ... rear defogger is operating and/or light-
ing switch is on.
OFF ... rear defogger is not operating and
lighting switch is not on.

IGNITION SW
[ON/OFF]

Indicates [ON/OFF] condition from ignition
switch.

HEATER FAN SW
[ON/OFF]

Indicates [ON/OFF] condition from the heater
fan switch.

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 cer-
tain computed value is indicated.

IGN TIMING [BTDC]

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

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

QG18DE

CONSULT-II (Cont’d)

EC-87

Monitored item [Unit]

ECM
input

signals

Main

signals

Description

Remarks

CAL/LD VALUE [%]

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

ABSOL TH.P/S [%]

“Absolute throttle position sensor” indicates
the throttle opening computed by ECM
according to the signal voltage of the throttle
position sensor.

MASS AIRFLOW
[gm/s]

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

IACV-AAC/V [step]

Indicates the IACV-AAC valve control value
computed by ECM according to the input sig-
nals.

PURG VOL C/V [%]

Indicates the EVAP canister purge volume
control solenoid valve computed by the ECM
according to the inpuct signals.

The opening becomes larger as the value
increases.

EGR VOL CON/V
[step]
(where fitted)

Indicates the EGR volume control valve com-
puted by the ECM according to the input sig-
nals.

The opening becomes larger as the value
increases.

SWRL CONT S/V
[ON/OFF]
(where fitted)

The control condition of the swirl control
valve control solenoid valve (determined by
ECM according to the input signals) is indi-
cated.

ON ... Swirl control valve is closed.
OFF ... Swirl control valve is opened.

INT/V SOL-B1
[ON/OFF]

The control condition of the valve timing sole-
noid valve (determined by ECM according to
the input signal) is indicated.
ON ... Intake valve timing control operating
OFF ... Intake valve timing control not operat-
ing

AIR COND RLY
[ON/OFF]

Indicates the air conditioner relay control con-
dition determined by ECM according to the
input signals.

FUEL PUMP RLY
[ON/OFF]

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

COOLING FAN
[ON/OFF]

Indicates [ON/OFF] control condition of the
cooling fan determined by ECM according to
the input signals.

HO2S1 HTR (B1)
[ON/OFF]

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

HO2S2 HTR (B1)
[ON/OFF]

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

ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

QG18DE

CONSULT-II (Cont’d)

EC-88

Nissan Almera Tino V10 (2001 year). Manual - part 32