Nissan Frontier D40. Manual — part 338
EVAPORATIVE EMISSION SYSTEM
EC-43
< FUNCTION DIAGNOSIS >
[QR25DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
EVAPORATIVE EMISSION LINE DRAWING
PBIB2654E
EC-44
< FUNCTION DIAGNOSIS >
[QR25DE]
EVAPORATIVE EMISSION SYSTEM
ALBIA0513ZZ
1.
EVAP vapor purge line
2.
EVAP canister vent control valve
(view with bed removed)
3.
EVAP control system pressure
sensor
4.
Drain filter
5.
EVAP canister
Front
Previous page
INTAKE VALVE TIMING CONTROL
EC-45
< FUNCTION DIAGNOSIS >
[QR25DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
INTAKE VALVE TIMING CONTROL
Description
INFOID:0000000005273036
SYSTEM DESCRIPTION
*: This signal is sent to ECM through CAN communication line.
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake
valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant
temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing control solenoid
valve depending on driving status. This makes it possible to control the shut/open timing of the intake valve to
increase engine torque in low/mid speed range and output in high-speed range.
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Engine speed
Piston position
Intake valve
timing control
Intake valve timing control
solenoid valve
Camshaft position sensor (PHASE)
Engine coolant temperature sensor
Engine coolant temperature
Combination meter
Vehicle speed*
PBIB3279E
EC-46
< FUNCTION DIAGNOSIS >
[QR25DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Introduction
INFOID:0000000005273037
The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actua-
tors. The ECM also records various emission-related diagnostic information including:
The above information can be checked using procedures listed in the table below.
×
: Applicable
—: Not applicable
*: When DTC and 1st trip DTC simultaneously appear on the display, they cannot be clearly distinguished from each other.
The malfunction indicator lamp (MIL) on the instrument panel illuminate when the same malfunction is
detected in two consecutive trips (Two trip detection logic), or when the ECM enters fail-safe mode. (Refer to
.)
Two Trip Detection Logic
INFOID:0000000005273038
When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data are stored in the
ECM memory. The MIL will not illuminate at this stage. <1st trip>
If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in
the ECM memory, and the MIL illuminates. The MIL illuminates at the same time the DTC is stored. <2nd trip>
The “trip” in the “Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed during
vehicle operation. Specific on board diagnostic items will cause the ECM to illuminate or blink the MIL, and
store DTC and Freeze Frame data, even in the 1st trip, as shown below.
×
: Applicable
—: Not applicable
When there is an open circuit on MIL circuit, the ECM cannot warn the driver by Illuminated MIL when there is
malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected as
NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by means
of operating fail-safe function.
Emission-related diagnostic information
Diagnostic service
Diagnostic Trouble Code (DTC)
Service $03 of SAE J1979/ISO 15031-5
Freeze Frame data
Service $02 of SAE J1979/ISO 15031-5
System Readiness Test (SRT) code
Service $01 of SAE J1979/ISO 15031-5
1st Trip Diagnostic Trouble Code (1st Trip DTC)
Service $07 of SAE J1979/ISO 15031-5
1st Trip Freeze Frame data
Test values and Test limits
Service $06 of SAE J1979/ISO 15031-5
Calibration ID
Service $09 of SAE J1979/ISO 15031-5
DTC
1st trip DTC
Freeze Frame
data
1st trip Freeze
Frame data
SRT code
SRT status
Test value
CONSULT-III
×
×
×
×
×
×
—
GST
×
×
×
—
×
×
×
ECM
×
×
*
—
—
—
×
—
Items
MIL
DTC
1st trip DTC
1st trip
2nd trip
1st trip
displaying
2nd trip
displaying
1st trip
displaying
2nd trip
display-
ing
Blinking
Illuminated
Blinking
Illuminated
Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0304 is being detected
×
—
—
—
—
—
×
—
Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0304 is being detected
—
—
×
—
—
×
—
—
One trip detection diagnoses
(Refer to
—
×
—
—
×
—
—
—
Except above
—
—
—
×
—
×
×
—
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст