Nissan Almera Tino V10 (2001 year). Manual — part 32
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
Condition
Diagnostic Test Mode I
Diagnostic Test Mode II
Ignition switch in “ON” position
Engine stopped
BULB CHECK
SELF-DIAGNOSTIC RESULTS
Engine running
MALFUNCTION WARNING
HEATED OXYGEN SENSOR 1
MONITOR (FRONT)
The following emission-related diagnostic information is cleared when the ECM memory is erased.
1) Diagnostic trouble codes
2) 1st trip diagnostic trouble codes
3) Freeze frame data
4) 1st trip freeze frame data
5) System readiness test (SRT) codes
6) Test values
7) Distance traveled while MI is activated
8) Others
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
QG18DE
Malfunction Indicator (MI) (Cont’d)
EC-74
How to Switch Diagnostic Test Modes
NLEC0032S02
SEF951WA
*3: EC-545
*4: EC-123
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
QG18DE
Malfunction Indicator (MI) (Cont’d)
EC-75
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
MI
Fuel mixture condition in the exhaust gas
Air fuel ratio feedback control condition
ON
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)
3 (pattern B)
3 (pattern B)
DTC, Freeze Frame Data (no display)
80 (pattern C)
80 (pattern C)
40 (pattern A)
1st Trip DTC (clear)
1 (pattern C), *1
1 (pattern C), *1
1 (pattern B)
1st Trip Freeze Frame Data (clear)
*1, *2
*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)
×
(1
±
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
1.
Turn ignition switch OFF.
2.
Connect “CONSULT-II” to data link connector.
(Data link connector is located under lower dash panel near
the fuse box cover.)
PBR455D
3.
Turn ignition switch ON.
4.
Touch “START”.
SEF995X
5.
Touch “ENGINE”.
SEF824Y
6.
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
P
ARTS
INPUT
Camshaft position sensor
(PHASE)
X
Engine
speed
X
Engine
speed
X
Engine
speed
X
Crankshaft position sensor
(POS)
X*3
Mass air flow sensor
X
X
X
Engine coolant temperature
sensor
X
X
X
X
X
Heated oxygen sensor 1
(front)
X
X
X
X*3
X*3
Heated oxygen sensor 2
(rear)
X*3
X
X
X*3
X*3
Vehicle speed sensor
X
X
X
X
Throttle position sensor
X
X
X
EGR temperature sensor
(where fitted)
X*3
X
X
Intake air temperature sen-
sor
X*3
X
X
X
Knock sensor
X
Ignition switch (start signal)
X
X
Closed throttle position
switch
(where fitted)
X*3
X
X
Closed throttle position
switch (throttle position sen-
sor signal)
X
X
Air conditioner switch
X
X
Park/Neutral position (PNP)
switch
X*3
X
X
Power steering oil pressure
switch
X
X
Electrical load
X
X
Heater fan switch
X
X
Battery voltage
X
X
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
P
ARTS
OUT-
PUT
Injectors
X
X
X
Power transistor (Ignition
timing)
X*3
(misfire)
X
X
X
IACV-AAC valve
X
X*3
X
X
X
Intake valve timing control
solenoid valve
X
X
X
EVAP canister purge volume
control solenoid valve
X*3
X
X
X
Air conditioner relay
X
X
Fuel pump relay
X
X
X
X
EGR volume control valve
(where fitted)
X*3
X
X
X
X*3
Heated oxygen sensor 1
heater (front)
X*3
X
X
X*3
Heated oxygen sensor 2
heater (rear)
X*3
X
X
X*3
Cooling fan
X
X
X
Swirl control valve control
solenoid valve (where fitted)
X*3
X
X
X
Calculated load value
X
X
X
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
2)
1st trip diagnostic trouble codes
3)
Freeze frame data
4)
1st trip freeze frame data
5)
System readiness test (SRT) codes
6)
Test values
7)
Distance traveled while MI is activated.
8)
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]
j
j
+
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]
j
j
+
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 [%]
j
+
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]
j
j
+
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]
j
j
+
The signal voltage of the heated oxygen sen-
sor 1 (front) is displayed.
HO2S2 (B1) [V]
j
+
The signal voltage of the heated oxygen sen-
sor 2 (rear) is displayed.
HO2S1 MNTR (B1)
[RICH/LEAN]
j
+
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]
j
+
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]
j
j
+
The vehicle speed computed from the vehicle
speed sensor signal is displayed.
BATTERY VOLT [V]
j
+
The power supply voltage of ECM is dis-
played.
THRTL POS SEN [V]
j
j
+
The throttle position sensor signal voltage is
displayed.
INT/A TEMP SE
[°C] or [°F]
j
+
The intake air temperature determined by the
signal voltage of the intake air temperature
sensor is indicated.
EGR TEMP SEN [V]
(where fitted)
j
j
+
The signal voltage of the EGR temperature
sensor is displayed.
START SIGNAL
[ON/OFF]
j
j
+
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]
j
j
+
Indicates idle position [ON/OFF] computed by
ECM according to the throttle position sensor
signal.
CLSD THL/P SW
[ON/OFF]
(where fitted)
j
+
Indicates mechanical contact [ON/OFF] con-
dition of the closed throttle position switch.
AIR COND SIG
[ON/OFF]
j
j
+
Indicates [ON/OFF] condition of the air condi-
tioner switch as determined by the air condi-
tioning signal.
P/N POSI SW
[ON/OFF]
j
j
+
Indicates [ON/OFF] condition from the PNP
switch signal.
PW/ST SIGNAL
[ON/OFF]
j
j
+
Indicates [ON/OFF] condition of the power
steering oil pressure switch determined by
the power steering oil pressure switch signal.
LOAD SIGNAL
[ON/OFF]
j
j
+
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]
j
+
Indicates [ON/OFF] condition from ignition
switch.
HEATER FAN SW
[ON/OFF]
j
+
Indicates [ON/OFF] condition from the heater
fan switch.
INJ PULSE-B1
[msec]
j
+
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]
j
+
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]
j
+
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)
j
+
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]
j
+
Indicates the air conditioner relay control con-
dition determined by ECM according to the
input signals.
FUEL PUMP RLY
[ON/OFF]
j
+
Indicates the fuel pump relay control condi-
tion determined by ECM according to the
input signals.
COOLING FAN
[ON/OFF]
j
+
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
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