Nissan March K13. Instruction — part 149
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-57
< SYSTEM DESCRIPTION >
[HR12DE (TYPE 1)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
<Driving Pattern A>
• 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>
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 MIL will go off when the B counter reaches 3 (*2 in OBD SYSTEM OPERATION CHART).
CONSULT-III Function
INFOID:0000000005989198
FUNCTION
*: The following emission-related diagnostic information is cleared when the ECM memory is erased.
• Diagnostic trouble codes
• 1st trip diagnostic trouble codes
• Freeze frame data
• 1st trip freeze frame data
• System readiness test (SRT) codes
• Test values
SELF DIAGNOSTIC RESULT MODE
Self Diagnostic Item
Regarding items of DTC and 1st trip DTC, refer to
Freeze Frame Data and 1st Trip Freeze Frame Data
JMBIA1920GB
Diagnostic test mode
Function
Ecu Identification
ECM part number can be read.
Self Diagnostic Result
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.*
Data Monitor
Input/Output data in the ECM can be read.
Active Test
Diagnostic Test Mode in which CONSULT-III drives some actuators apart from the ECMs and also shifts
some parameters in a specified range.
Function Test
This mode is used to inform customers when their vehicle condition requires periodic maintenance.
Work support
This mode enables a technician to adjust some devices faster and more accurately by following the in-
dications on the CONSULT-III unit.
DTC & SRT Confirmation
The status of system monitoring tests and the self-diagnosis status/result can be confirmed.
EC-58
< SYSTEM DESCRIPTION >
[HR12DE (TYPE 1)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
*: The items are the same as those of 1st trip freeze frame data.
DATA MONITOR MODE
Monitored Item
Freeze frame data
item*
Description
DTC RESULTS
• The engine control component part/control system has a trouble code, it is displayed as PXXXX. (Refer to
CAL/LD VALUE [%]
• The calculated load value at the moment a malfunction is detected is displayed.
COOLANT TEMP
[
°
C] or [
°
F]
• The engine coolant temperature at the moment a malfunction is detected is displayed.
L-FUEL TRM-B1 [%]
• “Long-term fuel trim” at the moment a malfunction is detected is displayed.
• The long-term fuel trim indicates much more gradual feedback compensation to the base fuel schedule than
short-term fuel trim.
S-FUEL TRM-B1 [%]
• “Short-term fuel trim” at the moment a malfunction is detected is displayed.
• The short-term fuel trim indicates dynamic or instantaneous feedback compensation to the base fuel sched-
ule.
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.
INT MANI PRES [kPa]
• These items are displayed but are not applicable to this model.
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.
FUEL SYS-B1
• “Fuel injection system status” at the moment a malfunction is detected is displayed.
• One mode in the following is displayed.
Mode2: Open loop due to detected system malfunction
Mode3: Open loop due to driving conditions (power enrichment, deceleration enleanment)
Mode4: Closed loop - using oxygen sensor(s) as feedback for fuel control
Mode5: Open loop - has not yet satisfied condition to go to closed loop
COMBUST CONDI-
TION
• These items are displayed but are not applicable to this model.
Monitored item
Unit
Description
Remarks
ENG SPEED
rpm
• Indicates the engine speed computed from the
signal 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
engine is running, an abnormal value
may be indicated.
MAS A/F SE-B1
V
• The signal voltage of the mass air flow sensor is
displayed.
• When the engine is stopped, a certain
value is indicated.
• When engine is running, specification
range is indicated in “SPEC”.
B/FUEL SCHDL
msec
• “Base fuel schedule” indicates the fuel injection
pulse width programmed into ECM, prior to any
learned on board correction.
• When engine is running, specification
range is indicated in “SPEC”.
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.
• When engine is running, specification
range is indicated in “SPEC”.
• This data also includes the data for
the air-fuel ratio learning control.
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-59
< SYSTEM DESCRIPTION >
[HR12DE (TYPE 1)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
COOLAN TEMP/S
°
C or
°
F
• 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 en-
gine coolant temperature determined
by the ECM is displayed.
A/F SEN1 (B1)
V
• The A/F signal computed from the input signal of
the air fuel ratio (A/F) sensor 1 is displayed.
HO2S2 (B1)
V
• The signal voltage of the heated oxygen sensor 2
is displayed.
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.
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
V
• 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.
• TP SEN 2-B1 signal is converted by
ECM internally. Thus, it differs from
ECM terminal voltage signal.
TP SEN 2-B1
START SIGNAL
ON/OFF
• 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 sig-
nal.
CLSD THL POS
ON/OFF
• Indicates idle position [ON/OFF] computed by
ECM according to the accelerator pedal position
sensor signal.
AIR COND SIG
ON/OFF
• Indicates [ON/OFF] condition of the air condition-
er switch as determined by the air conditioner sig-
nal.
PW/ST SIGNAL
ON/OFF
• [ON/OFF] condition of the power steering system
(determined by the signal sent from EPS control
unit) is indicated.
LOAD SIGNAL
ON/OFF
• Indicates [ON/OFF] condition from the electrical
load signal.
ON: Rear window defogger switch is ON and/or
lighting switch is in 2nd position.
OFF: Both rear window defogger switch and light-
ing switch are OFF.
IGNITION SW
ON/OFF
• Indicates [ON/OFF] condition from ignition switch
signal.
HEATER FAN SW
ON/OFF
• Indicates [ON/OFF] condition from the heater fan
switch signal.
BRAKE SW
ON/OFF
• Indicates [ON/OFF] condition from the stop lamp
switch signal.
INJ PULSE-B1
msec
• Indicates the actual fuel injection pulse width
compensated by ECM according to the input sig-
nals.
• When the engine is stopped, a certain
computed value is indicated.
IGN TIMING
BTDC
• Indicates the ignition timing computed by ECM
according to the input signals.
• When the engine is stopped, a certain
value is indicated.
CAL/LD VALUE
%
• “Calculated load value” indicates the value of the
current air flow divided by peak air flow.
Monitored item
Unit
Description
Remarks
EC-60
< SYSTEM DESCRIPTION >
[HR12DE (TYPE 1)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
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 con-
trol solenoid valve control value computed by the
ECM according to the input signals.
• The opening becomes larger as the value in-
creases.
EGR VOL CON/V
step
• Indicates the EGR volume control value comput-
ed by the ECM according to the input signals.
• The opening becomes larger as the value in-
creases.
INT/V TIM(B1)
°
CA
• Indicates [
°
CA] of intake camshaft advance an-
gle.
INT/V SOL(B1)
%
• The control value of the intake valve timing con-
trol solenoid valve (determined by ECM accord-
ing to the input signals) is indicated.
• The advance angle becomes larger as the value
increases.
AIR COND RLY
ON/OFF
• The air conditioner relay control condition (deter-
mined by ECM according to the input signals) is
indicated.
FUEL PUMP RLY
ON/OFF
• Indicates the fuel pump relay control condition
determined by ECM according to the input sig-
nals.
THRTL RELAY
ON/OFF
• Indicates the throttle control motor relay control
condition determined by the ECM according to
the input signals.
COOLING FAN
HI/LOW/OFF
• Indicates the condition of the cooling fan (deter-
mined by ECM according to the input signals).
HI: High speed operation
LOW: High speed operation
*
OFF: Stop
HO2S2 HTR (B1)
ON/OFF
• Indicates [ON/OFF] condition of heated oxygen
sensor 2 heater determined by ECM according to
the input signals.
ALT DUTY SIG
ON/OFF
• The control condition of the power generation
voltage variable control (determined by ECM ac-
cording to the input signals) is indicated.
ON: Power generation voltage variable control is
active.
OFF: Power generation voltage variable control
is inactive.
VEHICLE SPEED
km/h or mph
• The vehicle speed computed from the vehicle
speed signal sent from TCM is displayed.
IDL A/V LEARN
YET/CMPLT
• Displays the condition of Idle Air Volume Learn-
ing
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.
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.
Monitored item
Unit
Description
Remarks
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