Nissan Primera P11. Instruction — part 125
Item
DIAGNOSTIC TEST MODE
WORK
SUP-
PORT
SELF-DIAGNOSTIC
RESULTS
DATA
MONITOR
DATA
MONI-
TOR
(SPEC)
ACTIVE
TEST
DTC & SRT
CONFIRMATION
DTC*1
FREEZE
FRAME
DATA*2
SRT
STA-
TUS
SRT
WORK
SUP-
PORT
DTC
WORK
SUP-
PORT
ENGINE
CONTROL
COMPONENT
P
ARTS
OUT-
PUT
Injectors
X
X
X
Power transistor (Ignition
timing)
X
(Ignition
signal)
X
X
X
IACV-AAC valve
X
X
X
X
X
Intake valve timing con-
trol solenoid valve
X
X
X
EVAP canister purge vol-
ume control solenoid
valve
X
X
X
X
Air conditioner relay
X
X
Fuel pump relay
X
X
X
X
EGR volume control
valve (If so equipped)
X
X
X
X
X
X
X
Heated oxygen sensor
heater 1 (front)
X
X
X
X
Heated oxygen sensor
heater 2 (rear)
X
X
X
X
Cooling fan
X
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-QG-38.
FUNCTION
NCEC0034S03
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 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
2)
1st trip diagnostic trouble codes
3)
Freeze frame data
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
QG16
I
18DE
CONSULT-II (Cont’d)
EC-57
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
NCEC0034S04
WORK ITEM
CONDITION
USAGE
FUEL PRESSURE RELEASE
I
FUEL PUMP WILL STOP BY TOUCHING “START”
DURING IDLING.
CRANK A FEW TIMES AFTER ENGINE STALLS.
When releasing fuel pressure
from fuel line
TARGET IDLE RPM ADJ*
I
IDLE CONDITION
When setting target idle speed
TARGET IGNITION TIMING ADJ*
I
IDLE CONDITION
When adjusting target ignition tim-
ing
After adjustment, confirm target
ignition timing with a timing light.
*: This function is not necessary in the usual service procedure.
SELF DIAGNOSTIC MODE
NCEC0034S05
DTC and 1st Trip DTC
NCEC0034S0501
Regarding items of “DTC and 1st trip DTC”, refer to
“TROUBLE DIAGNOSIS — INDEX”, EC-QG-6.
Freeze Frame Data and 1st Trip Freeze Frame Data
NCEC0034S0502
Freeze frame data
item*
Description
DIAG TROUBLE
CODE
[PXXXX]
I
Engine Control component part/control system has a trouble code, it is displayed as “PXXXX”. [Refer to
“Alphabetical & P No. Index for DTC” (EC-QG-6).]
FUEL SYS DATA
I
“Fuel injection system status” at the moment a malfunction is detected is displayed.
I
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 [%]
I
The calculated load value at the moment a malfunction is detected is displayed.
COOLANT TEMP [°C]
or [°F]
I
The engine coolant temperature at the moment a malfunction is detected is displayed.
S-FUEL TRIM [%]
I
“Short-term fuel trim” at the moment a malfunction is detected is displayed.
I
The short-term fuel trim indicates dynamic or instantaneous feedback compensation to the base fuel
schedule.
L-FUEL TRIM [%]
I
“Long-term fuel trim” at the moment a malfunction is detected is displayed.
I
The long-term fuel trim indicates much more gradual feedback compensation to the base fuel schedule
than short-term fuel trim.
ENGINE SPEED
[rpm]
I
The engine speed at the moment a malfunction is detected is displayed.
VHCL SPEED [km/h]
or [mph]
I
The vehicle speed at the moment a malfunction is detected is displayed.
*: The items are the same as those of 1st trip freeze frame data.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
QG16
I
18DE
CONSULT-II (Cont’d)
EC-58
DATA MONITOR MODE
NCEC0034S06
Monitored item [Unit]
ECM
input
signals
Main
signals
Description
Remarks
ENG SPEED
[rpm]
q
q
I
Indicates the engine speed computed from the
POS signal of the crankshaft position sensor.
I
Accuracy becomes poor if
engine speed drops below the
idle rpm.
I
If the signal is interrupted while
the engine is running, an abnor-
mal value may be indicated.
MAS A/F SE-B1 [V]
q
q
I
The signal voltage of the mass air flow sensor is
displayed.
I
When the engine is stopped, a
certain value is indicated.
COOLAN TEMP/S
[°C] or [°F]
q
q
I
The engine coolant temperature (determined by
the signal voltage of the engine coolant tem-
perature sensor) is displayed.
I
When the engine coolant tem-
perature sensor is open or
short-circuited, ECM enters fail-
safe mode. The engine coolant
temperature determined by the
ECM is displayed.
HO2S1 (B1) [V]
q
q
I
The signal voltage of the heated oxygen sensor
1 (front) is displayed.
HO2S2 (B1) [V]
q
I
The signal voltage of the heated oxygen sensor
2 (rear) is displayed.
HO2S1 MNTR (B1)
[RICH/LEAN]
q
I
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 mix-
ture.
LEAN ... means the mixture became “lean”, and
control is being affected toward a rich mixture.
I
After turning ON the ignition
switch, “RICH” is displayed until
air-fuel mixture ratio feedback
control begins.
I
When the air-fuel ratio feedback
is clamped, the value just
before the clamping is dis-
played continuously.
HO2S2 MNTR (B1)
[RICH/LEAN]
q
I
Display of heated oxygen sensor 2 (rear) 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.
I
When the engine is stopped, a
certain value is indicated.
VHCL SPEED SE
[km/h] or [mph]
q
q
I
The vehicle speed computed from the vehicle
speed sensor signal or ABS actuator and elec-
tric unit (control unit) signal is displayed.
BATTERY VOLT [V]
q
I
The power supply voltage of ECM is displayed.
THRTL POS SEN [V]
q
q
I
The throttle position sensor signal voltage is dis-
played.
EGR TEMP SEN [V]
(If so equipped)
q
q
I
The signal voltage of the EGR temperature sen-
sor is displayed.
INT/A TEMP SE
[°C] or [°F]
q
I
The intake air temperature determined by the
signal voltage of the intake air temperature sen-
sor is indicated.
START SIGNAL
[ON/OFF]
q
q
I
Indicates [ON/OFF] condition from the starter
signal.
I
After starting the engine, [OFF]
is displayed regardless of the
starter signal.
CLSD THL POS
[ON/OFF]
q
q
I
Indicates idle position [ON/OFF] computed by
ECM according to the throttle position sensor
signal.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
QG16
I
18DE
CONSULT-II (Cont’d)
EC-59
Monitored item [Unit]
ECM
input
signals
Main
signals
Description
Remarks
AIR COND SIG
[ON/OFF]
q
q
I
Indicates [ON/OFF] condition of the air condi-
tioner switch as determined by the air condition-
ing signal.
P/N POSI SW
[ON/OFF]
q
q
I
Indicates [ON/OFF] condition from the PNP
switch signal.
PW/ST SIGNAL
[ON/OFF]
q
q
I
Indicates [ON/OFF] condition of the power steer-
ing oil pressure switch determined by the power
steering oil pressure switch signal.
LOAD SIGNAL
[ON/OFF]
q
q
I
Indicates [ON/OFF] condition from the electrical
load signal and/or lighting switch.
ON ... rear defogger is operating and/or lighting
switch is on.
OFF ... rear defogger is not operating and light-
ing switch is not on.
IGNITION SW
[ON/OFF]
q
I
Indicates [ON/OFF] condition from ignition
switch.
HEATER FAN SW
[ON/OFF]
q
I
Indicates [ON/OFF] condition from the heater
fan switch.
INJ PULSE-B1
[msec]
q
I
Indicates the actual fuel injection pulse width
compensated by ECM according to the input
signals.
I
When the engine is stopped, a
certain computed value is indi-
cated.
B/FUEL SCHDL
[msec]
I
“Base fuel schedule” indicates the fuel injection
pulse width programmed into ECM, prior to any
learned on board correction.
IGN TIMING [BTDC]
q
I
Indicates the ignition timing computed by ECM
according to the input signals.
IACV-AAC/V [step]
q
I
Indicates the IACV-AAC valve control value
computed by ECM according to the input sig-
nals.
A/F ALPHA-B1 [%]
q
I
Indicates the mean value of the air-fuel ratio
feedback correction factor per cycle.
I
When the engine is stopped, a
certain value is indicated.
I
This data also includes the data
for the air-fuel ratio learning
control.
AIR COND RLY
[ON/OFF]
q
I
Indicates the air conditioner relay control condi-
tion determined by ECM according to the input
signals.
FUEL PUMP RLY
[ON/OFF]
q
I
Indicates the fuel pump relay control condition
determined by ECM according to the input sig-
nals.
INT/V SOL-B1
[ON/OFF]
I
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 operating
COOLING FAN
[ON/OFF]
q
I
Indicates the control condition of the cooling fan
determined by ECM according to the input sig-
nals.
HI ... High speed operation
LOW ... Low speed operation
OFF ... Stop
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
QG16
I
18DE
CONSULT-II (Cont’d)
EC-60
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