2007 NISSAN LATIO sensor

EVAPORATIVE EMISSION SYSTEM
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Revision: June 20062007 Versa
3. Apply battery voltage to the terminal of EVAP canister vent con-
trol valve (3) to make a closed EVAP system.

EVAP control system pressure sensor (1)
(This illustration is a view from under vehicle)

EVAP canister (2)
4. To locate the leak, deliver positive pressure to the EVAP system until pressure gauge points reach 1.38 to
2.76 kPa (0.014 to 0.028 kg/cm
2 , 0.2 to 0.4 psi).
5. Remove EVAP service port adapter and hose with pressure pump.
6. Locate the leak using a leak detector. Refer to EC-32, "
EVAPORATIVE EMISSION LINE DRAWING" .
BBIA0693E

ON BOARD REFUELING VAPOR RECOVERY (ORVR)
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Diagnostic ProcedureUBS00QBD
SYMPTOM: FUEL ODOR FROM EVAP CANISTER IS STRONG.
1. CHECK EVAP CANISTER
1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
2. Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be less than 1.9 kg (4.2 lb).
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK IF EVAP CANISTER SATURATED WITH WATER
Does water drain from the EVAP canister?
Ye s o r N o
Yes >> GO TO 3.
No >> GO TO 5.
3. REPLACE EVAP CANISTER
Replace EVAP canister with a new one.
>> GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the EVAP hose between EVAP canister and vehicle frame for clogging or poor connection.
>> Repair or replace EVAP hose.
5. CHECK REFUELING EVAP VAPOR CUT VALVE
Refer to EC-42, "
Component Inspection" .
OK or NG
OK >>INSPECTION END
NG >> Replace refueling EVAP vapor cut valve with fuel tank.
PBIB1213E

EC-40Revision: June 2006
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
2007 Versa
SYMPTOM: CANNOT REFUEL/FUEL ODOR FROM THE FUEL FILLER OPENING IS STRONG
WHILE REFUELING.
1. CHECK EVAP CANISTER
1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
2. Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be less than 1.9 kg (4.2 lb).
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK IF EVAP CANISTER SATURATED WITH WATER
Does water drain from the EVAP canister?
Ye s o r N o
Yes >> GO TO 3.
No >> GO TO 5.
3. REPLACE EVAP CANISTER
Replace EVAP canister with a new one.
>> GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the EVAP hose between EVAP canister and vehicle frame for clogging or poor connection.
>> Repair or replace EVAP hose.
5. CHECK VENT HOSES AND VENT TUBES
Check hoses and tubes between EVAP canister and refueling EVAP vapor cut valve for clogging, kink, loose-
ness and improper connection.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace hoses and tubes.
6. CHECK FILLER NECK TUBE
Check recirculation line for clogging, dents and cracks.
OK or NG
OK >> GO TO 7.
NG >> Replace filler neck tube.
PBIB1213E

ON BOARD DIAGNOSTIC (OBD) SYSTEM
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ON BOARD DIAGNOSTIC (OBD) SYSTEMPFP:00028
IntroductionUBS00QBF
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 EC-91, "
Fail-Safe Chart" .)
Two Trip Detection LogicUBS00QBG
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
When there is an open circuit on MIL circuit, the ECM cannot warn the driver by MIL lighting up when there is
malfunction on engine control system.
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 DTCFreeze Frame
data1st trip Freeze
Frame dataSRT code SRT status Test value
CONSULT-II××××××—
GST×× ×—×××
ECM××*———×—
ItemsMIL DTC 1st trip DTC
1st trip 2nd trip
1st trip
displaying2nd trip
displaying1st trip
displaying2nd trip
display-
ing BlinkingLighting
upBlinkingLighting
up
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 EC-48, "
EMISSION-
RELATED DIAGNOSTIC INFOR-
MATION ITEMS" .)—×——×———
Except above — — —×—××—

EC-48Revision: June 2006
ON BOARD DIAGNOSTIC (OBD) SYSTEM
2007 Versa
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.
The fail-safe function also operates when above diagnoses except MIL circuit are detected, and demands the
driver to repair the malfunction.
Emission-related Diagnostic InformationUBS00QBH
EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS
×: Applicable —: Not applicable Engine operating condition in fail-safe mode Engine speed will not rise more than 2,500 rpm due to the fuel cut
Items
(CONSULT-II screen terms)DTC*
1
SRT codeTe s t v a l u e /
Test limit
(GST only)TripMIL light-
ing upReference
page CONSULT-II
GST*
2ECM*3
CAN COMM CIRCUIT U1000
1000*4——1 (CVT)
1 (A/T)
2 (M/T)× (CVT)
× (A/T)
— (M/T)EC-151
CAN COMM CIRCUIT U1001
1001*4——2—EC-151
CONTROL UNIT(CAN) U1010 1010 — —1 (CVT)
1 (A/T)
2 (M/T)× (CVT)
× (A/T)
— (M/T)EC-154
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.P0000 0000———
Flashing*5EC-62
INT/V TIM CONT-B1 P0011 0011 — — 2×EC-156
A/F SEN1 HTR (B1) P0031 0031 —×2×EC-161
A/F SEN1 HTR (B1) P0032 0032 —×2×EC-161
HO2S2 HTR (B1) P0037 0037 —×2×EC-166
HO2S2 HTR (B1) P0038 0038 —×2×EC-166
INT/V TIM V/CIR-B1 P0075 0075 — — 2×EC-173
MAF SEN/CIRCUIT P0101 0101 — — 2×EC-178
MAF SEN/CIRCUIT P0102 0102 — — 1×EC-187
MAF SEN/CIRCUIT P0103 0103 — — 1×EC-187
IAT SEN/CIRCUIT P0112 0112 — — 2×EC-195
IAT SEN/CIRCUIT P0113 0113 — — 2×EC-195
ECT SEN/CIRC P0117 0117 — — 1×EC-200
ECT SEN/CIRC P0118 0118 — — 1×EC-200
TP SEN 2/CIRC P0122 0122 — — 1×EC-206
TP SEN 2/CIRC P0123 0123 — — 1×EC-206
ECT SENSOR P0125 0125 — — 1×EC-212
IAT SENSOR P0127 0127 — — 2×EC-215
THERMSTAT FNCTN P0128 0128 — — 2×EC-218
A/F SENSOR1 (B1) P0130 0130 —×2×EC-220
A/F SENSOR1 (B1) P0131 0131 —×2×EC-227
A/F SENSOR1 (B1) P0132 0132 —×2×EC-233
A/F SENSOR1 (B1) P0133 0133××2×EC-239
HO2S2 (B1) P0137 0137××2×EC-248
HO2S2 (B1) P0138 0138××2×EC-257
HO2S2 (B1) P0139 0139××2×EC-267
FUEL SYS-LEAN-B1 P0171 0171 — — 2×EC-276
FUEL SYS-RICH-B1 P0172 0172 — — 2×EC-284

ON BOARD DIAGNOSTIC (OBD) SYSTEM
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Revision: June 20062007 VersaFTT SENSOR P0181 0181 — — 2×EC-291
FTT SEN/CIRCUIT P0182 0182 — — 2×EC-297
FTT SEN/CIRCUIT P0183 0183 — — 2×EC-297
TP SEN 1/CIRC P0222 0222 — — 1×EC-302
TP SEN 1/CIRC P0223 0223 — — 1×EC-302
MULTI CYL MISFIRE P0300 0300 — — 2×EC-308
CYL 1 MISFIRE P0301 0301 — — 2×EC-308
CYL 2 MISFIRE P0302 0302 — — 2×EC-308
CYL 3 MISFIRE P0303 0303 — — 2×EC-308
CYL 4 MISFIRE P0304 0304 — — 2×EC-308
KNOCK SEN/CIRC-B1 P0327 0327 — — 2 —EC-315
KNOCK SEN/CIRC-B1 P0328 0328 — — 2 —EC-315
CKP SEN/CIRCUIT P0335 0335 — — 2×EC-319
CMP SEN/CIRC-B1 P0340 0340 — — 2×EC-327
TW CATALYST SYS-B1 P0420 0420× ×2×EC-334
EVAP PURG FLOW/MON P0441 0441××2×EC-340
EVAP SMALL LEAK P0442 0442××2×EC-346
PURG VOLUME CONT/V P0443 0443 — — 2×EC-354
PURG VOLUME CONT/V P0444 0444 — — 2×EC-362
PURG VOLUME CONT/V P0445 0445 — — 2×EC-362
VENT CONTROL VALVE P0447 0447 — — 2×EC-369
VENT CONTROL VALVE P0448 0448 — — 2×EC-376
EVAP SYS PRES SEN P0451 0451 — — 2×EC-382
EVAP SYS PRES SEN P0452 0452 — — 2×EC-385
EVAP SYS PRES SEN P0453 0453 — — 2×EC-391
EVAP GROSS LEAK P0455 0455 — — 2×EC-398
EVAP VERY SML LEAK P0456 0456
×*6×2×EC-406
FUEL LEV SEN SLOSH P0460 0460 — — 2×EC-415
FUEL LEVEL SENSOR P0461 0461 — — 2×EC-417
FUEL LEVL SEN/CIRC P0462 0462 — — 2×EC-419
FUEL LEVL SEN/CIRC P0463 0463 — — 2×EC-419
VEH SPEED SEN/CIRC*7P0500 0500 — — 2×EC-421
ISC SYSTEM P0506 0506 — — 2×EC-423
ISC SYSTEM P0507 0507 — — 2×EC-425
ECM P0605 0605 — — 1 or 2 — or ×EC-427
SENSOR POWER/CIRC P0643 0643 — — 1×EC-430
PNP SW/CIRC P0705 0705 — — 2×AT - 9 7 (A/T),
CVT-78
(CVT)
ATF TEMP SEN/CIRC P0710 0710 — — 2×AT- 1 0 2
(A/T),
CVT-85
(CVT)
INPUT SPD SEN/CIRC P0715 0715 — — 2×CVT-90
VEH SPD SEN/CIR AT*7P0720 0720 — — 2×AT- 1 0 7 (A/T),
CVT-95
(CVT) Items
(CONSULT-II screen terms)DTC*
1
SRT codeTe s t v a l u e /
Te s t l i m i t
(GST only)TripMIL light-
ing upReference
page CONSULT-II
GST*
2ECM*3

ON BOARD DIAGNOSTIC (OBD) SYSTEM
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*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012.
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
*4: The troubleshooting for this DTC needs CONSULT-II.
*5: When the ECM in the mode of displaying SRT status, MIL may flash. For the details, refer to EC-56, "
How to Display SRT Status" .
*6: SRT code will not be set if the self-diagnostic result is NG.
*7: When the fail-safe operations for both self-diagnoses occur, the MIL illuminates.
DTC AND 1ST TRIP DTC
The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic
result obtained. If the ECM memory was cleared previously, and the 1st trip DTC did not reoccur, the 1st trip
DTC will not be displayed.
If a malfunction is detected during the 1st trip, the 1st trip DTC is stored in the ECM memory. The MIL will not
light up (two trip detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required
driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the
2nd trip, both the 1st trip DTC and DTC are stored in the ECM memory and the MIL lights up. In other words,
the DTC is stored in the ECM memory and the MIL lights up when the same malfunction occurs in two consec-
utive trips. If a 1st trip DTC is stored and a non-diagnostic operation is performed between the 1st and 2nd
trips, only the 1st trip DTC will continue to be stored. For malfunctions that blink or light up the MIL during the
1st trip, the DTC and 1st trip DTC are stored in the ECM memory.
Procedures for clearing the DTC and the 1st trip DTC from the ECM memory are described in EC-60, "
HOW
TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" .
For malfunctions in which 1st trip DTCs are displayed, refer to EC-48, "
EMISSION-RELATED DIAGNOSTIC
INFORMATION ITEMS" . These items are required by legal regulations to continuously monitor the system/
component. In addition, the items monitored non-continuously are also displayed on CONSULT-II.
1st trip DTC is specified in Service $07 of SAE J1979. 1st trip DTC detection occurs without lighting up the MIL
and therefore does not warn the driver of a malfunction. However, 1st trip DTC detection will not prevent the
vehicle from being tested, for example during Inspection/Maintenance (I/M) tests.
When a 1st trip DTC is detected, check, print out or write down and erase (1st trip) DTC and Freeze Frame
data as specified in Work Flow procedure Step 2, refer to EC-84, "
WORK FLOW" . Then perform DTC Confir-
mation Procedure or Overall Function Check to try to duplicate the malfunction. If the malfunction is dupli-
cated, the item requires repair.
How to Read DTC and 1st Trip DTC
DTC and 1st trip DTC can be read by the following methods.
WITH CONSULT-II
WITH GST
CONSULT-II or GST (Generic Scan Tool) Examples: P0340, P0850, P1148, etc.
These DTCs are prescribed by SAE J2012.
(CONSULT-II also displays the malfunctioning component or system.)
NO TOOLS
The number of blinks of the MIL in the Diagnostic Test Mode II (Self-Diagnostic Results) indicates the DTC.
Example: 0340, 0850, 1148, etc.
These DTCs are controlled by NISSAN.

1st trip DTC No. is the same as DTC No.

Output of a DTC indicates a malfunction. However, GST or the Diagnostic Test Mode II do not indi-
cate whether the malfunction is still occurring or has occurred in the past and has returned to nor-
mal. CONSULT-II can identify malfunction status as shown below. Therefore, using CONSULT-II (if
available) is recommended.
APP SEN 2/CIRC P2128 2128 — — 1×EC-519
TP SENSOR P2135 2135 — — 1×EC-526
APP SENSOR P2138 2138 — — 1×EC-532
A/F SENSOR1 (B1) P2A00 2A00 —×2×EC-540
Items
(CONSULT-II screen terms)DTC*
1
SRT codeTe s t v a l u e /
Te s t l i m i t
(GST only)TripMIL light-
ing upReference
page CONSULT-II
GST*
2ECM*3

ON BOARD DIAGNOSTIC (OBD) SYSTEM
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Occasionally, certain portions of the self-diagnostic test may not be completed as a result of the customer's
normal driving pattern; the SRT will indicate “INCMP” for these items.
NOTE:
The SRT will also indicate “INCMP” if the self-diagnosis memory is erased for any reason or if the ECM mem-
ory power supply is interrupted for several hours.
If, during the state emissions inspection, the SRT indicates “CMPLT” for all test items, the inspector will con-
tinue with the emissions test. However, if the SRT indicates “INCMP” for one or more of the SRT items the
vehicle is returned to the customer untested.
NOTE:
If MIL is ON during the state emissions inspection, the vehicle is also returned to the customer untested even
though the SRT indicates “CMPLT” for all test items. Therefore, it is important to check SRT (“CMPLT”) and
DTC (No DTCs) before the inspection.
SRT Item
The table below shows required self-diagnostic items to set the SRT to “CMPLT”.
*: If completion of several SRTs is required, perform driving patterns (DTC confirmation procedure), one by one based on the priority for
models with CONSULT-II.
SRT Set Timing
SRT is set as “CMPLT” after self-diagnosis has been performed one or more times. Completion of SRT is
done regardless of whether the result is OK or NG. The set timing is different between OK and NG results and
is shown in the table below.
SRT item
(CONSULT-II indication)Perfor-
mance
Priority*Required self-diagnostic items to set the SRT to “CMPLT”Corresponding DTC
No.
CATALYST 2 Three way catalyst function P0420
EVAP SYSTEM 2 EVAP control system purge flow monitoring P0441
1 EVAP control system P0442
2 EVAP control system P0456
HO2S 2 Air fuel ratio (A/F) sensor 1 P0133
Heated oxygen sensor 2 P0137
Heated oxygen sensor 2 P0138
Heated oxygen sensor 2 P0139
Self-diagnosis resultExample
DiagnosisIgnition cycle
← ON → OFF ← ON → OFF ← ON → OFF ← ON →
All OK Case 1 P0400 OK (1) — (1) OK (2) — (2)
P0402 OK (1) — (1) — (1) OK (2)
P1402 OK (1) OK (2) — (2) — (2)
SRT of EGR “CMPLT” “CMPLT” “CMPLT” “CMPLT”
Case 2 P0400 OK (1) — (1) — (1) — (1)
P0402 — (0) — (0) OK (1) — (1)
P1402 OK (1) OK (2) — (2) — (2)
SRT of EGR “INCMP” “INCMP” “CMPLT” “CMPLT”
NG exists Case 3 P0400 OK OK — —
P0402 — — — —
P1402 NG — NGNG
(Consecutive
NG)
(1st trip)
DTC1st trip DTC — 1st trip DTCDTC
(= MIL “ON”)
SRT of EGR “INCMP” “INCMP” “INCMP” “CMPLT”