Nissan Altima L32. Instruction — part 247
TUMBLE CONTROL VALVE CONTROL
EC-109
< FUNCTION DIAGNOSIS >
[QR25DE FOR CALIFORNIA]
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EC
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1.
EVAP service port
2.
Intake air duct
3.
EVAP canister purge volume control so-
lenoid valve
4.
Intake manifold collector
5.
Park/neutral position (PNP) switch (CVT)
(This illustration is view with air cleaner
assembly removed.)
6.
Park/neutral position (PNP) switch (M/T)
(This illustration is view with air cleaner
assembly removed.)
7.
Intake valve timing control
solenoid valve
(This illustration is view with
engine removed.)
8.
Exhaust manifold cover
9.
Air fuel ratio (A/F) sensor 1
10. Air fuel ratio (A/F) sensor 1
harness connector
11. Heated oxygen sensor 2
(This illustration is view from under vehi-
cle.)
12. Heated oxygen sensor 2 harness con-
nector
(This illustration is view from under vehi-
cle.)
13. Engine oil pan
14. Heated oxygen sensor 3
(This illustration is view form under vehi-
cle.)
15. Heated oxygen sensor 3 harness con-
nector
(This illustration is view from under vehi-
cle.)
: Vehicle front
ALBIA0092ZZ
EC-110
< FUNCTION DIAGNOSIS >
[QR25DE FOR CALIFORNIA]
TUMBLE CONTROL VALVE CONTROL
1.
Thermostat housing
2.
Tumble control valve actuator
3.
Throttle valve
(This illustration is view with intake
air duct removed.)
4.
Electric throttle control actuator
5.
Fuel injector harness connector
6.
Condenser-2
7.
Radiator hose (upper)
8.
Battery
9.
ECM
10. Fuel level sensor unit and fuel pump
harness connector
(This illustration is view with rear
seat cushion and inspection hole
cover removed.)
11. Fuel level sensor unit and fuel pump
assembly
12. Fuel pressure regulator
13. Fuel tank temperature sensor
14. EVAP control system pressure sen-
sor (This illustration is view with rear
suspension member removed.)
15. EVAP canister vent control valve
(This illustration is view with rear
suspension member removed.)
16. EVAP canister
(This illustration is view with rear
suspension member removed.)
: Vehicle front
ALBIA0093ZZ
TUMBLE CONTROL VALVE CONTROL
EC-111
< FUNCTION DIAGNOSIS >
[QR25DE FOR CALIFORNIA]
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EC
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Component Description
INFOID:0000000004349179
1.
No.1 ignition coil
2.
Cooling fan motor-1 harness con-
nector
3.
Cooling fan motor-2 harness con-
nector
4.
Refrigerant pressure sensor
5.
Accelerator pedal position sensor
6.
ASCD brake switch
7.
Stop lamp switch
8.
Brake pedal
9.
ASCD clutch switch
10. Clutch pedal
11. ASCD steering switch
12. CANSEC switch
13. RESUME/ACCELERATE switch
14. SET/COAST switch
15. MAIN switch
: Vehicle front
ALBIA0089ZZ
Component
Reference
Tumble control valve
Tumble control valve position sensor
EC-112
< FUNCTION DIAGNOSIS >
[QR25DE FOR CALIFORNIA]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Diagnosis Description
INFOID:0000000004349180
INTRODUCTION
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 lights up 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
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 light up 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 lights up. The MIL lights up at the same time when 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 light up or blink the MIL,
and store DTC and Freeze Frame data, even in the 1st trip, as shown below.
×: Applicable —: Not applicable
DTC AND FREEZE FRAME DATA
DTC and 1st Trip DTC
Emission-related diagnostic information
Diagnostic service
Diagnostic Trouble Code (DTC)
Service $03 of SAE J1979
Freeze Frame data
Service $02 of SAE J1979
System Readiness Test (SRT) code
Service $01 of SAE J1979
1st Trip Diagnostic Trouble Code (1st Trip DTC)
Service $07 of SAE J1979
1st Trip Freeze Frame data
Test values and Test limits
Service $06 of SAE J1979
Calibration ID
Service $09 of SAE J1979
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
Lighting
up
Blinking
Lighting
up
Misfire (Possible three way catalyst
damage) — DTC: P0300 - P0304 is
being detected
×
—
—
—
—
—
×
—
Misfire (Possible three way catalyst
damage) — DTC: P0300 - P0304 is
being detected
—
—
×
—
—
×
—
—
One trip detection diagnoses (Re-
fer to
—
×
—
—
×
—
—
—
Except above
—
—
—
×
—
×
×
—
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