Nissan Silvia. Manual — part 131
SRS928
CONSULT-II
=NMEC0034
CONSULT-II INSPECTION PROCEDURE
NMEC0034S01
1.
Turn ignition switch OFF.
2.
Connect “CONSULT-II” to data link connector, which is located
under driver’s side dash panel.
PBR455D
3.
Turn ignition switch ON.
4.
Touch “START”.
SEF995X
5.
Touch “ENGINE”.
SEF996X
6.
Perform each diagnostic test mode according to each service
procedure.
For further information, see the CONSULT-II Operation
Manual.
GI
MA
EM
LC
FE
CL
MT
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II
EC-39
ENGINE CONTROL COMPONENT PARTS/CONTROL
SYSTEMS APPLICATION
NMEC0034S02
Item
DIAGNOSTIC TEST MODE
WORK SUP-
PORT
SELF-DIAG-
NOSTIC
RESULTS
DATA MONI-
TOR
ACTIVE TEST
ENGINE
CONTROL
COMPONENT
P
ARTS
INPUT
Camshaft position sensor
X
X
Mass air flow sensor
X
X
Engine coolant temperature sensor
X
X
X
Heated oxygen sensor 1 (front)
X
Vehicle speed sensor
X
Throttle position sensor
X
X
X
Knock sensor
X
Ignition switch (start signal)
X
Air conditioner switch
X
Park/neutral position (PNP) switch
X
Power steering oil pressure switch
X
Battery voltage
X
Electrical load signal
X
ENGINE
CONTROL
COMPONENT
P
ARTS
OUTPUT
Injectors
X
X
Power transistor (Ignition timing)
X
X (Ignition sig-
nal)
X
X
IACV-AAC valve
X
X
X
Air conditioner relay
X
Fuel pump relay
X
X
X
Cooling fan relay
X
X
X
Heated oxygen sensor 1 heater (front)
X
Intake valve timing control solenoid valve
X
X
Wastegate valve control solenoid valve
X
X
X: Applicable
FUNCTION
NMEC0034S03
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 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-II drives some actuators apart from the ECMs and also
shifts some parameters in a specified range.
ECM part number
ECM part number can be read.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont’d)
EC-40
WORK SUPPORT MODE
NMEC0034S04
WORK ITEM
CONDITION
USAGE
TP SW/TP SEN IDLE POSI ADJ
I
FOLLOW THE BASIC INSPECTION IN THE SERVICE
MANUAL.
When adjusting the idle throttle
position.
IGNITION TIMING ADJ
I
IGNITION TIMING FEEDBACK CONTROL WILL BE
HELD BY TOUCHING “START”. AFTER DOING SO,
ADJUST IGNITION TIMING WITH A TIMING LIGHT BY
TURNING THE CAMSHAFT POSITION SENSOR.
When adjusting initial ignition tim-
ing
IACV-AAC/V ADJ
SET ENGINE SPEED AT THE SPECIFIED VALUE
UNDER THE FOLLOWING CONDITIONS.
I
ENGINE WARMED UP
I
NO-LOAD
When adjusting idle speed
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
SELF-LEARNING CONT
I
THE COEFFICIENT OF SELF-LEARNING CONTROL
MIXTURE RATIO RETURNS TO THE ORIGINAL
COEFFICIENT.
When clearing the coefficient of
self-learning control value
SELF-DIAGNOSTIC MODE
NMEC0034S05
DTC
NMEC0034S0501
Regarding items of “DTC”, refer to “TROUBLE DIAGNOSIS —
INDEX” (See EC-4.)
DATA MONITOR MODE
NMEC0034S06
Monitored item [Unit]
ECM
input
signals
Main
signals
Description
Remarks
CMPS-RPM (REF)
[rpm]
q
q
I
Indicates the engine speed computed
from the REF signal (180° signal) of
the camshaft position sensor.
MAS AIR/FL SE [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.
A/F ALPHA [%]
q
I
The mean value of the air-fuel ratio
feedback correction factor per cycle is
indicated.
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.
COOLAN TEMP/S
[°C] or [°F]
q
q
I
The engine coolant temperature (deter-
mined by the signal voltage of the
engine coolant temperature sensor) is
displayed.
I
When the engine coolant temperature
sensor is open or short-circuited, ECM
enters fail-safe mode. The engine cool-
ant temperature determined by the
ECM is displayed.
O2S1 [V]
q
q
I
The signal voltage of the heated oxy-
gen sensor 1 (front) is displayed.
M/R F/C MNT [RICH/
LEAN]
q
q
I
Display of front heated oxygen sensor
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.
I
After turning ON the ignition switch,
“RICH” is displayed until air-fuel mix-
ture ratio feedback control begins.
I
When the air-fuel ratio feedback is
clamped, the value just before the
clamping is displayed continuously.
GI
MA
EM
LC
FE
CL
MT
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont’d)
EC-41
Monitored item [Unit]
ECM
input
signals
Main
signals
Description
Remarks
VHCL SPEED SE
[km/h] or [mph]
q
q
I
The vehicle speed computed from the
vehicle speed sensor signal is dis-
played.
BATTERY VOLT [V]
q
q
I
The power supply voltage of ECM is
displayed.
THRTL POS SEN [V]
q
q
I
The throttle position sensor signal volt-
age is displayed.
START SIGNAL
[ON/OFF]
q
q
I
Indicates [ON/OFF] condition from the
starter signal.
I
After starting the engine, [OFF] is dis-
played regardless of the starter signal.
CLSD THL POS
[ON/OFF]
q
q
I
Indicates idle position [ON/OFF] com-
puted by ECM according to the throttle
position sensor signal.
AIR COND SIG
[ON/OFF]
q
q
I
Indicates [ON/OFF] condition of the air
conditioner switch as determined by
the air conditioner signal.
P/N POSI SW
[ON/OFF]
q
q
I
Indicates [ON/OFF] condition from the
park/neutral position (PNP) switch sig-
nal.
PW/ST SIGNAL
[ON/OFF]
q
q
I
[ON/OFF] condition of the power steer-
ing oil pressure switch determined by
the power steering oil pressure signal
is indicated.
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 lighting switch is not on.
INJ PULSE [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 indicated.
IGN TIMING [BTDC]
q
I
Indicates the ignition timing computed
by ECM according to the input signals.
I
When the engine is stopped, a certain
value is indicated.
IACV-AAC/V [%]
q
I
Indicates the IACV-AAC valve control
value computed by ECM according to
the input signals.
W/G CONT S/V [%]
q
I
Indicates the wastegate valve control
solenoid valve control value computed
by the ECM according to the input sig-
nals.
AIR COND RLY
[ON/OFF]
q
I
The air conditioner relay control condi-
tion (determined by ECM according to
the input signal) is indicated.
FUEL PUMP RLY
[ON/OFF]
q
I
Indicates the fuel pump relay control
condition determined by ECM accord-
ing to the input signals.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont’d)
EC-42
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