Infiniti I35 (A33). Manual — part 192
Monitored item [Unit]
ECM
INPUT
SIG-
NALS
MAIN
SIG-
NALS
Description
Remarks
VHCL SPD CUT
[NON/CUT]
I
Indicates the vehicle cruise condition.
NON...Vehicle speed is maintained at
the ASCD set speed.
CUT...Vehicle speed decreased to
excessively low compared with the
ASCD set speed, and ASCD operation
is cut off.
LO SPEED CUT
[NON/CUT]
I
Indicates the vehicle cruise condition.
NON...Vehicle speed is maintained at
the ASCD set speed.
CUT...Vehicle speed decreased to
excessively low compared with the
ASCD set speed, and ASCD operation
is cut off.
AT OD MONITOR
[ON/OFF]
I
Indicates [ON/OFF] condition of A/T
O/D according to the input signal from
the TCM.
AT OD CANCEL]
[ON/OFF]
I
Indicates [ON/OFF] condition of A/T OD
cancel signal sent from the TCM.
CRUISE LAMP
[ON/OFF]
I
Indicates [ON/OFF] condition CRUISE
lamp determined by the ECM according
to the input signals.
SET LAMP
[ON/OFF]
I
Indicates [ON/OFF] condition of SET
lamp determined by the ECM according
to the input signals.
Voltage [V]
I
Voltage, frequency, duty cycle or pulse
width measured by the probe.
I
Pulse width, frequency or duty cycle
measured by the pulse probe. Only
″
#
″
is displayed if item is unable to be
measured.
I
Figures with
″
#
″
s are temporary ones.
They are the same figures as an actual
piece of data which was just previously
measured.
Frequency [msec],
[Hz] or [%]
DUTY-HI
DUTY-LOW
PLS WIDTH-HI
PLS WIDTH-low
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
DATA MONITOR (SPEC) MODE
NHEC0034S11
Monitored item [Unit]
ECM
input
signals
Main
signals
Description
Remarks
MAS A/F SE-B1 [V]
q
q
I
The signal voltage of the mass air flow sen-
sor specification is displayed.
I
When the engine is running, specifi-
cation range is indicated.
B/FUEL SCHDL
[msec]
I
“Base fuel schedule” indicates the fuel injec-
tion pulse width programmed into ECM,
prior to any learned on board correction.
I
When the engine is running, specifi-
cation range is indicated.
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 running, specifi-
cation range is indicated.
I
This data also includes the data for
the air-fuel ratio learning control.
A/F ALPHA-B2 [%]
q
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont’d)
EC-109
ACTIVE TEST MODE
NHEC0034S07
TEST ITEM
CONDITION
JUDGEMENT
CHECK ITEM (REMEDY)
FUEL INJECTION
I
Engine: Return to the original
trouble condition
I
Change the amount of fuel injec-
tion using CONSULT-II.
If trouble symptom disappears, see
CHECK ITEM.
I
Harness and connector
I
Fuel injectors
I
Heated oxygen sensor
IGNITION TIMING
I
Engine: Return to the original
trouble condition
I
Timing light: Set
I
Retard the ignition timing using
CONSULT-II.
If trouble symptom disappears, see
CHECK ITEM.
I
Adjust initial ignition timing
POWER BAL-
ANCE
I
Engine: After warming up, idle
the engine.
I
A/C switch OFF
I
Shift lever N
I
Cut off each injector signal one
at a time using CONSULT-II.
Engine runs rough or dies.
I
Harness and connector
I
Compression
I
Injectors
I
Power transistor
I
Spark plugs
I
Ignition coils
COOLING FAN*
I
Ignition switch: ON
I
Turn the cooling fan “ON” and
“OFF” using CONSULT-II.
Cooling fan moves and stops.
I
Harness and connector
I
Cooling fan motor
I
Cooling fan relay
ENG COOLANT
TEMP
I
Engine: Return to the original
trouble condition
I
Change the engine coolant tem-
perature using CONSULT-II.
If trouble symptom disappears, see
CHECK ITEM.
I
Harness and connector
I
Engine coolant temperature sen-
sor
I
Fuel injectors
FUEL PUMP
RELAY
I
Ignition switch: ON
(Engine stopped)
I
Turn the fuel pump relay “ON”
and “OFF” using CONSULT-II
and listen to operating sound.
Fuel pump relay makes the operat-
ing sound.
I
Harness and connector
I
Fuel pump relay
VIAS SOL VALVE
I
Ignition switch: ON
I
Turn solenoid valve “ON” and
“OFF” with CONSULT-II and lis-
ten for operating sound.
Solenoid valve makes an operating
sound.
I
Harness and connector
I
Solenoid valve
ENGINE MOUNT-
ING
I
Engine: After warming up, run
engine at idle speed.
I
Gear position: “D”’ range
(Vehicle stopped)
I
Turn electronic controlled engine
mount “IDLE” and “TRVL” with
the CONSULT-II.
Body vibration changes according
to the electronic controlled engine
mount condition.
I
Harness and connector
I
Electronic controlled engine
mount
PURG VOL
CONT/V
I
Engine: After warming up, run
engine at 1,500 rpm.
I
Change the EVAP canister purge
volume control solenoid valve
opening percent using CON-
SULT-II.
Engine speed changes according
to the opening percent.
I
Harness and connector
I
Solenoid valve
FUEL/T TEMP
SEN
I
Change the fuel tank temperature using CONSULT-II.
VENT
CONTROL/V
I
Ignition switch: ON
(Engine stopped)
I
Turn solenoid valve “ON” and
“OFF” with the CONSULT-II and
listen to operating sound.
Solenoid valve makes an operating
sound.
I
Harness and connector
I
Solenoid valve
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont’d)
EC-110
TEST ITEM
CONDITION
JUDGEMENT
CHECK ITEM (REMEDY)
VC/V BYPASS/V
I
Ignition switch: ON
(Engine stopped)
I
Turn solenoid valve “ON” and
“OFF” with the CONSULT-II and
listen to operating sound.
Solenoid valve makes an operating
sound.
I
Harness and connector
I
Solenoid valve
V/T ASSIGN
ANGLE
I
Engine: After warming up, hold
engine speed at 2,500 rpm.
I
Change the intake valve timing
using CONSULT-II.
If trouble symptom disappears, see
CHECK ITEM.
I
Harness and connector
I
Intake valve timing control sole-
noid valve
*: Leaving cooling fan “OFF” with CONSULT-II while engine is running may cause the engine to overheat.
DTC & SRT CONFIRMATION MODE
NHEC0034S08
SRT STATUS Mode
NHEC0034S0801
For details, refer to “SYSTEM READINESS TEST (SRT) CODE”,
EC-76.
SRT Work Support Mode
NHEC0034S0803
This mode enables a technician to drive a vehicle to set the SRT
while monitoring the SRT status.
DTC Work Support Mode
NHEC0034S0802
Test mode
Test item
Condition
Reference page
EVAPORATIVE SYSTEM
PURGE FLOW P0441
Refer to corresponding
trouble diagnosis for
DTC.
EVP SML LEAK P0442/P1442
EVP V/S LEAK P0456/P1456
PURG VOL CN/V P1444
VC CUT/V BP/V P1491
HO2S1
HO2S1 (B1) P0133
HO2S1 (B1) P0134
HO2S1 (B1) P1143
HO2S1 (B1) P1144
HO2S1 (B2) P0153
HO2S1 (B2) P0154
HO2S1 (B2) P1163
HO2S1 (B2) P1164
HO2S2
HO2S2 (B1) P0139
HO2S2 (B1) P1146
HO2S2 (B1) P1147
HO2S2 (B2) P0159
HO2S2 (B2) P1166
HO2S2 (B2) P1167
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont’d)
EC-111
SEF705Y
SEF707X
REAL TIME DIAGNOSIS IN DATA MONITOR MODE
(RECORDING VEHICLE DATA)
NHEC0034S10
CONSULT-II has two kinds of triggers and they can be selected by
touching “SETTING” in “DATA MONITOR” mode.
1)
“AUTO TRIG” (Automatic trigger):
I
The malfunction will be identified on the CONSULT-II screen in
real time.
In other words, DTC/1st trip DTC and malfunction item will be
displayed if the malfunction is detected by ECM.
At the moment a malfunction is detected by ECM, “MONITOR”
in “DATA MONITOR” screen is changed to “Recording Data ...
xx%” as shown at left, and the data after the malfunction detec-
tion is recorded. Then when the percentage reached 100%,
“REAL-TIME DIAG” screen is displayed. If “STOP” is touched
on the screen during “ Recording Data ... xx%”, “REAL-TIME
DIAG” screen is also displayed.
The recording time after the malfunction detection and the
recording speed can be changed by “TRIGGER POINT” and
“Recording Speed”. Refer to CONSULT-II OPERATION
MANUAL.
2)
“MANU TRIG” (Manual trigger):
I
DTC/1st trip DTC and malfunction item will not be displayed
automatically on CONSULT-II screen even though a malfunc-
tion is detected by ECM.
DATA MONITOR can be performed continuously even though
a malfunction is detected.
Use these triggers as follows:
1)
“AUTO TRIG”
I
While trying to detect the DTC/1st trip DTC by performing the
“DTC Confirmation Procedure”, be sure to select to “DATA
MONITOR (AUTO TRIG)” mode. You can confirm the malfunc-
tion at the moment it is detected.
I
While narrowing down the possible causes, CONSULT-II
should be set in “DATA MONITOR (AUTO TRIG)” mode, espe-
cially in case the incident is intermittent.
When you are inspecting the circuit by gently shaking (or twist-
ing) the suspicious connectors, components and harness in
the “DTC Confirmation Procedure”, the moment a malfunction
is found the DTC/1st trip DTC will be displayed. (Refer to GI-21,
“Incident Simulation Tests”.)
2)
“MANU TRIG”
I
If the malfunction is displayed as soon as “DATA MONITOR”
is selected, reset CONSULT-II to “MANU TRIG”. By selecting
“MANU TRIG” you can monitor and store the data. The data
can be utilized for further diagnosis, such as a comparison with
the value for the normal operating condition.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont’d)
EC-112
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