Infiniti Q45. Manual — part 369
TROUBLE DIAGNOSIS
EC-115
C
D
E
F
G
H
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M
A
EC
CONSULT-II Function (ENGINE)
NBS001R8
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
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.*
Data monitor
Input/Output data in the ECM can be read.
Data monitor (SPEC)
Input/Output of the specification for Basic fuel schedule, AFM, A/F feedback control value and the
other data monitor items can be read.
CAN diagnostic support
monitor
The results of transmit/receive diagnosis of CAN communication 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 & SRT confirmation
The status of system monitoring tests and the self-diagnosis status/result can be confirmed.
Function test
This mode is used to inform customers when their vehicle condition requires periodic maintenance.
ECM part number
ECM part number can be read.
EC-116
TROUBLE DIAGNOSIS
ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
Item
DIAGNOSTIC TEST MODE
WORK
SUP-
PORT
SELF-DIAGNOSTIC
RESULTS
DATA
MONI-
TOR
DATA
MONI-
TOR
(SPEC)
ACTIVE
TEST
DTC & SRT
CONFIRMATION
DTC*1
FREEZE
FRAME
DATA*2
SRT
STATUS
DTC
WORK
SUP-
PORT
ENGINE CONTROL
COM
P
ONENT
P
ARTS
IN
P
U
T
Crankshaft position sensor (POS)
×
×
×
×
Camshaft position sensor (PHASE)
×
×
×
×
Mass air flow sensor
×
×
×
Engine coolant temperature sensor
×
×
×
×
×
Air fuel ratio (A/F) sensor 1
×
×
×
×
×
Heated oxygen sensor 2
×
×
×
×
×
Wheel sensor
×
×
×
×
Accelerator pedal position sensor
×
×
×
Throttle position sensor
×
×
×
Fuel tank temperature sensor
×
×
×
×
EVAP control system pressure
sensor
×
×
×
Intake air temperature sensor
×
×
×
×
Knock sensor
×
Refrigerant pressure sensor
×
×
Closed throttle position switch
(accelerator pedal position sensor
signal)
×
×
Air conditioner switch
×
×
Park/neutral position (PNP) switch
×
×
×
Stop lamp switch
×
×
×
Power steering pressure sensor
×
×
×
Battery voltage
×
×
Load signal
×
×
Intake valve timing control position
sensor
×
×
×
Fuel level sensor
×
×
×
ICC steering switch
×
×
×
ASCD steering switch
×
×
×
ICC brake switch
×
×
×
ASCD brake switch
×
×
×
TROUBLE DIAGNOSIS
EC-117
C
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A
EC
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
.
*3: Always “CMPLT” is displayed.
INSPECTION PROCEDURE
Refer to
GI-36, "CONSULT-II Start Procedure"
.
WORK SUPPORT MODE
Work Item
ENGI
NE CONTROL CO
MPONENT P
ARTS
OUTPUT
Fuel injector
×
×
×
Power transistor (Ignition timing)
×
×
×
Throttle control motor relay
×
×
×
Throttle control motor
×
EVAP canister purge volume con-
trol solenoid valve
×
×
×
×
×
FPCM
×
×
×
×
Air conditioner relay
×
×
Fuel pump relay
×
×
×
×
Cooling fan relay
×
×
×
×
Air fuel ratio (A/F) sensor 1 heater
×
×
×
×
*
3
Heated oxygen sensor 2 heater
×
×
×
×
*
3
EVAP canister vent control valve
×
×
×
×
×
Vacuum cut valve bypass valve
×
×
×
×
×
×
Intake valve timing control solenoid
valve
×
×
×
×
VIAS control solenoid valve
×
×
×
×
Calculated load value
×
×
×
Item
DIAGNOSTIC TEST MODE
WORK
SUP-
PORT
SELF-DIAGNOSTIC
RESULTS
DATA
MONI-
TOR
DATA
MONI-
TOR
(SPEC)
ACTIVE
TEST
DTC & SRT
CONFIRMATION
DTC*1
FREEZE
FRAME
DATA*2
SRT
STATUS
DTC
WORK
SUP-
PORT
WORK ITEM
CONDITION
USAGE
FUEL PRESSURE RELEASE
●
FUEL PUMP WILL STOP BY TOUCHING “START” DUR-
ING 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 COEF-
FICIENT.
When clearing the coefficient of
self-learning control value
EC-118
TROUBLE DIAGNOSIS
*: This function is not necessary in the usual service procedure.
SELF-DIAG RESULTS MODE
Self Diagnostic Item
Regarding items of DTC and 1st trip DTC, refer to
EC-48, "EMISSION-RELATED DIAGNOSTIC INFORMA-
Freeze Frame Data and 1st Trip Freeze Frame Data
EVAP SYSTEM CLOSE
OPEN THE VACUUM CUT VALVE BYPASS VALVE AND
CLOSE THE EVAP CANISTER VENT CONTROL VALVE IN
ORDER TO MAKE EVAP SYSTEM CLOSE UNDER THE
FOLLOWING CONDITIONS.
●
IGN SW ON
●
ENGINE NOT RUNNING
●
AMBIENT TEMPERATURE IS ABOVE 0
°
C (32
°
F).
●
NO VACUUM AND NO HIGH PRESSURE IN EVAP SYS-
TEM
●
TANK FUEL TEMP. IS MORE THAN 0
°
C (32
°
F).
●
WITHIN 10 MINUTES AFTER STARTING “EVAP SYS-
TEM CLOSE”
●
WHEN TRYING TO EXECUTE “EVAP SYSTEM CLOSE”
UNDER THE CONDITION EXCEPT ABOVE, CONSULT-
II WILL DISCONTINUE IT AND DISPLAY APPROPRI-
ATE INSTRUCTION.
NOTE:
WHEN STARTING ENGINE, CONSULT-II MAY DISPLAY
“BATTERY VOLTAGE IS LOW. CHARGE BATTERY”,
EVEN IN USING CHARGED BATTERY.
When detecting EVAP vapor leak
point of EVAP system
VIN REGISTRATION
●
IN THIS MODE, VIN IS REGISTERED IN ECM
When registering VIN in ECM
TARGET IDLE RPM ADJ*
●
IDLE CONDITION
When setting target idle speed
TARGET IGNITION TIMING ADJ*
●
IDLE CONDITION
When adjusting target ignition tim-
ing
WORK ITEM
CONDITION
USAGE
Freeze frame data
item*
Description
DIAG TROUBLE
CODE
[PXXXX]
●
The engine control component part/control system has a trouble code, it is displayed as “PXXXX”. (Refer
to
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
FUEL SYS-B2
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.
L-FUEL TRM-B2 [%]
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
schedule.
S-FUEL TRM-B2 [%]
ENGINE SPEED
[rpm]
●
The engine speed at the moment a malfunction is detected is displayed.
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