2009 NISSAN LATIO service

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*: 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-1052, " Emission-related Diagnostic Information " .
Freeze Frame Data and 1st Trip Freeze Frame Data EVAP SYSTEM CLOSE 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
• FUEL TANK 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-
III WILL DISCONTINUE IT AND DISPLAY APPROPRI-
ATE INSTRUCTION.
NOTE:
WHEN STARTING ENGINE, CONSULT-III MAY DIS-
PLAY “BATTERY VOLTAGE IS LOW. CHARGE BAT-
TERY”, EVEN IN USING CHARGED BATTERY. When detecting EVAP vapor leak
point of EVAP system
TARGET IDLE RPM ADJ* • IDLE CONDITION When setting target idle speed
TARGET IGN TIM ADJ* • IDLE CONDITION Wh en adjusting target ignition tim-
ing
VIN REGISTRATION • IN THIS MODE, VIN IS REGISTERED IN ECM. When registering VIN in ECM WORK ITEM CONDITION USAGE )
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
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.
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.
ENGINE SPEED [rpm] • The engine sp eed at the moment a malfunction is de tected is displayed.
VEHICL SPEED
[km/h] or [mph] • The vehicle speed at the moment a malfunction is detected is displayed.
ABSOL TH-P/S [%] • The throttle valve opening angle at the moment a malfunction is detected is displayed.
B/FUEL SCHDL [msec] • The ba se fuel schedule at the moment a malfunctio n is detected is displayed.
INT/A TEMP SE
[ ° C] or [ °F] • The intake air temperature at the moment a malfunction is detected is displayed.

EC-1124< SERVICE INFOMATION >
[MR TYPE 2]
TROUBLE DIAGNOSIS
*: Leaving cooling fan OFF with CONSULT-III while engine is running may cause the engine to overheat.
DTC & SRT CONFIRMATION MODE
SRT STATUS Mode
For details, refer to EC-1052, " Emission-related Diagnostic Information " .
SRT WORK SUPPORT Mode
This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.
DTC WORK SUPPORT Mode
*: DTC P1442 and P1456 does not apply to C11 models but appears in DTC Work Support Mode screens.
Generic Scan Tool (GST) Function INFOID:0000000004499947
DESCRIPTION
Generic Scan Tool (OBDII scan tool) complying with SAE J1978 has
8 different functions explained below.
ISO 15765-4 is used as the protocol.
The name GST or Generic Scan Tool is used in this service manual.
FUNCTION VENT CON-
TROL/V • Ignition switch: ON
(Engine stopped)
• Turn solenoid valve “ON” and “OFF” with the CONSULT-III and
listen to operating sound. Solenoid valve makes an operating
sound. • Harness and connectors
• EVAP canister vent control valve
V/T ASSIGN AN-
GLE • Engine: Return to the original
trouble condition
• Change intake valve timing using CONSULT-III. If trouble symptom disappears, see
CHECK ITEM. • Harness and connectors
• Intake valve timing control sole-
noid valve
TEST ITEM CONDITION JUDGMENT CHECK ITEM (REMEDY) Test mode Test item Corresponding DTC No. Reference
EVAPORATIVE SYS-
TEM PURG FLOW P0441 P0441
EC-1310EVP SML LEAK P0442/P1442*
P0442
EC-1315 P0455
EC-1366 EVP V/S LEAK P0456/P1456* P0456
EC-1373PURG VOL CN/V P1444 P0443
EC-1322A/F SEN1
A/F SEN1 (B1) P1276 P0130
EC-1210A/F SEN1 (B1) P1278/P1279 P0133
EC-1228HO2S2
HO2S2 (B1) P0139 P0139
EC-1251HO2S2 (B1) P1146 P0138
EC-1242HO2S2 (B1) P1147 P0137
EC-1235 SEF139P

TROUBLE DIAGNOSIS
EC-1125
< SERVICE INFOMATION >
[MR TYPE 2] C
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INSPECTION PROCEDURE
1. Turn ignition switch OFF.
2. Connect GST to data link connector (1), which is located under LH dash panel.
3. Turn ignition switch ON.
4. Enter the program according to instruction on the screen or in the operation manual.
(*: Regarding GST screens in this section, sample screens are
shown.) Diagnostic test mode Function
Service $01 READINESS TESTS This diagnostic service gains access to current emission-related data values, including an-
alog inputs and outputs, digital inputs and outputs, and system status information.
Service $02 (FREEZE DATA) This diagnostic service gains access to emission-related data value which were stored by
ECM during the freeze frame. For details, refer to EC-1116, " CONSULT-III Function (EN-
GINE) " .
Service $03 DTCs This diagnostic service gains access to emission-related power train trouble codes which
were stored by ECM.
Service $04 CLEAR DIAG INFO This diagnostic service can clear all emission-related diagnostic information. This in-
cludes:
• Clear number of diagnostic trouble codes (Service $01)
• Clear diagnostic trouble codes (Service $03)
• Clear trouble code for freeze frame data (Service $01)
• Clear freeze frame data (Service $02)
• Reset status of system monitoring test (Service $01)
• Clear on board monitoring test results (Service $06 and $07)
Service $06 (ON BOARD TESTS) This diagnostic service accesses the results of on board diagnostic monitoring tests of
specific components/systems that are not continuously monitored.
Service $07 (ON BOARD TESTS) This diagnostic service enables the off board test drive to obtain test results for emission-
related powertrain components/systems that are continuously monitored during normal
driving conditions.
Service $08 — This diagnostic service can close EVAP system in ignition switch ON position (Engine
stopped). When this diagnostic service is performed, EVAP canister vent control valve can
be closed. In the following conditions, this diagnostic service cannot function.
• Low ambient temperature
• Low battery voltage
• Engine running
• Ignition switch OFF
• Low fuel temperature
• Too much pressure is applied to EVAP system
Service $09 (CALIBRATION ID) This diagnostic service enables the off-board test device to request specific vehicle infor-
mation such as Vehicle Identification Number (VIN) and Calibration IDs. BBIA0734E
SEF398S

EC-1126< SERVICE INFOMATION >
[MR TYPE 2]
TROUBLE DIAGNOSIS
5. Perform each diagnostic service according to each service pro- cedure.
For further information, see th e GST Operation Manual of
the tool maker.
CONSULT-III Reference Value in Data Monitor Mode INFOID:0000000004499948
Remarks:
z Specification data are reference values.
z Specification data are output/input values which are detected or supplied by the ECM at the connector.
* Specification data may not be directly relate d to their components signals/values/operations.
i.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the specification data in spite of the
ignition timing not being adjusted to the specification data. This IGN TIMING moni tors the data calculated by the ECM according to the signals
input from the camshaft position sensor and other ignition timing related sensors. SEF416S
MONITOR ITEM CONDITION SPECIFICATION
ENG SPEED • Run engine and compare CONSULT-III value with the tachometer indica-
tion. Almost the same speed as the
tachometer indication.
MAS A/F SE-B1 See EC-1130 .
B/FUEL SCHDL See EC-1130 .
A/F ALPHA-B1 See EC-1130 .
COOLAN TEMP/S • Engine: After warming up More than 70 °C (158 °F)
A/F SEN1 (B1) • Engine: After warming up Maintaining engine speed at 2,000 rpm Fluctuates around 2.2V
HO2S2 (B1) • Revving engine from idle to 3,000 rpm quickly after the following conditions
are met
- Engine: After warming up
- Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1 minute under no load 0 - 0.3V
←→ Approx. 0.6 -
1.0V
HO2S2 MNTR (B1) LEAN ←→ RICH
VHCL SPEED SE • Turn drive wheels and compare CONSULT-III value with the speedometer
indication. Almost the same speed as the
speedometer indication.
BATTERY VOLT • Ignition switch: ON (Engine stopped) 11 - 14V
ACCEL SEN 1 • Ignition switch: ON
(Engine stopped) Accelerator pedal: Fully released 0.6 - 0.9V
Accelerator pedal: Fully depressed 4.0 - 4.8V
ACCEL SEN 2* • Ignition switch: ON
(Engine stopped) Accelerator pedal: Fully released 0.6 - 0.9V
Accelerator pedal: Fully depressed 3.9 - 4.8V
EVAP SYS PRES • Ignition switch: ON Approx. 1.8 - 4.8V
TP SEN 1-B1
TP SEN 2-B1* • Ignition switch: ON
(Engine stopped) Accelerator pedal: Fully released More than 0.36V
• Shift lever: D (A/T, CVT), 1st (M/T) Accelerator pedal: Fully depressed Less than 4.75V
START SIGNAL • Ignition switch: ON → START → ON OFF → ON → OFF
CLSD THL POS • Ignition switch: ON Accelerator
pedal: Fully released ON
Accelerator pedal: Slightly depressed OFF
AIR COND SIG • Engine: After warming up, idle the
engine Air conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates.) ON

TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-1131
< SERVICE INFOMATION >
[MR TYPE 2] C
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EC-1132< SERVICE INFOMATION >
[MR TYPE 2]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
DETAILED PROCEDURE 1.
CHECK “A/F ALPHA-B1”
1. Start engine.
2. Confirm that the testing conditions are met. Refer to EC-1130, " Testing Condition " .
3. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITO R” mode, and make sure that the indication is within
the SP value.
NOTE: PBIB3213E

OK >>
INSPECTION END
NG >> GO TO 9. OK >> GO TO 12.
NG >> GO TO 10. .)
- Fuel injector and its circuit (Refer to EC-1508 .)
- Intake air leakage
- Low compression pressure (Refer to EM-185, " On-Vehicle Service " .)
2. If NG, repair or replace the malfunctioning part.
If OK, replace fuel injector. (It may be caus ed by leakage from fuel injector or clogging.)
>> GO TO 11. OK >>
INSPECTION END
NG >> GO TO 12. DTC Confirmation Procedure " .
• For DTC P0131, refer to EC-1216, " DTC Confirmation Procedure " .
• For DTC P0132, refer to EC-1222, " DTC Confirmation Procedure " .
• For DTC P0133, refer to EC-1228, " DTC Confirmation Procedure " .
• For DTC P2A00, refer to EC-1488, " DTC Confirmation Procedure " .
OK or NG OK >> GO TO 15.
NG >> GO TO 13.

POWER SUPPLY AND GROUND CIRCUIT
EC-1139
< SERVICE INFOMATION >
[MR TYPE 2] C
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POWER SUPPLY AND GROUND CIRCUIT
Wiring Diagram INFOID:0000000004499955
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals wh en measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground. BBWA2625E