OBD port NISSAN LATIO 2011 Service Repair Manual
[x] Cancel search | Manufacturer: NISSAN, Model Year: 2011, Model line: LATIO, Model: NISSAN LATIO 2011Pages: 3787, PDF Size: 78.35 MB
Page 25 of 3787

AT-8
< SERVICE INFORMATION >
PRECAUTIONS
6. Perform a self-diagnosis check of all control units using CONSULT-III.
Precaution for On Board Diagnosis (OBD) System of A/T and EngineINFOID:0000000005928065
The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:
• Be sure to turn the ignition switch OFF and disconnect battery negative cable from battery negative
terminal before any repair or inspection work. The open/short circuit of related switches, sensors,
solenoid valves, etc. will cause the MIL to light up.
• Be sure to connect and lock the connectors secure ly after work. A loose (unlocked) connector will
cause the MIL to light up due to an open circuit. (Be sure the connectors are free from water, grease,
dirt, bent terminals, etc.)
• Be sure to route and secure th e harnesses properly after work. Interference of the harness with a
bracket, etc. may cause the MIL to light up due to a short circuit.
• Be sure to erase the unnecessary malfunction informa tion (repairs completed) from the TCM and
ECM before returning the vehicle to the customer.
PrecautionINFOID:0000000005928066
•Before connecting or disconn ecting the TCM harness connec-
tor, turn ignition switch OF F and disconnect the battery cable
from the negative terminal. Failure to do so may damage the
TCM. Because battery voltage is applied to TCM even if igni-
tion switch is turned off.
• When connecting or disconnect ing pin connectors into or
from TCM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on TCM pin
terminal, when connecting pin connectors.
• Before replacing TCM, perform TCM input/output signal
inspection and make sure whether TCM functions properly or
not. (See page AT-75, "
TCM Terminal and Reference Value".)
• After performing each TROUBLE DIAGNOSIS, perform “DTC
(Diagnostic Trouble Code) Confirmation Procedure”.
The DTC should not be displ ayed in the “DTC Confirmation
Procedure” if the repair is completed.
• Before proceeding with disassembly, thoroughly clean the outside of the transaxle. It is important to prevent the internal parts from
becoming contaminated by dirt or other foreign matter.
• Disassembly should be done in a clean work area.
• Use lint-free cloth or towels for wiping parts clean. Common shop rags can leave fibers that could in terfere with the operation of the A/T.
• Place disassembled parts in order for easier and proper assembly.
• All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or reassembly.
SEF289H
AAT470A
MEF040DA
Revision: May 2010 2011 Versa
Page 26 of 3787

PRECAUTIONSAT-9
< SERVICE INFORMATION >
DE
F
G H
I
J
K L
M A
B
AT
N
O P
• Gaskets, seals and O-rings should be replaced any time the A/T is disassembled.
• It is very important to perform func tional tests whenever they are indicated.
• The valve body contains precision parts and requires extreme care when parts are removed and serviced.
Place disassembled valve body parts in order for easier and proper assembly. Care will also prevent springs
and small parts from becoming scattered or lost.
• Properly installed valves, sleeves, plugs, etc. will slide along bores in valve body under their own weight.
• Before assembly, apply a coat of recommended ATF to all parts. Apply petroleum jelly to protect O-rings and seals, or hold bearings and washers in pl ace during assembly. Do not use grease.
• Extreme care should be taken to avoid damage to O-rings, seals and gaskets when assembling.
• Clean or replace ATF cooler if excessive foreign material is found in oil pan or clogging strainer. Refer to AT-
18, "A/T Fluid Cooler Cleaning".
• After overhaul, refill the A/T with new ATF.
• When the A/T drain plug is removed, only some of the fluid is drained. Old A/T fluid will remain in torque con- verter and ATF cooling system.
Always follow the procedures under “Changing A/T Fluid” in the AT section when changing A/T fluid. Refer to
AT-17, "
Changing A/T Fluid", AT-17, "Checking A/T Fluid".
Service Notice or PrecautionINFOID:0000000005928067
ATF COOLER SERVICE
If A/T fluid contains frictional material (clutches, bands, etc.), or if an A/T is repaired, overhauled, or replaced,
inspect and clean the A/T oil cooler mounted in the radiator or replace the radiator. Flush cooler lines using
cleaning solvent and compressed air after repair. Check Service Bulletins for latest A/T oil cooler cleaning pro-
cedure. For radiator replacement, refer to CO-16, "
Removal and Installation" (HR16DE engine models), CO-
40, "Removal and Installation" (MR18DE engine models).
TORQUE CONVERTER SERVICE
The torque converter should be replaced under any of the following conditions:
• External leaks in the hub weld area.
• Converter hub is scored or damaged.
• Converter pilot is broken, damaged or fits poorly into crankshaft.
• Steel particles are found after flushing the cooler and cooler lines.
• Pump is damaged or steel particles are found in the converter.
• Vehicle has TCC shudder and/or no TCC apply. Replace only after all hydraulic and electrical diagnoses
have been made. (Converter clutch material may be glazed.)
• Converter is contaminated with engi ne coolant containing antifreeze.
• Internal malfunction of stator roller clutch.
• Heavy clutch debris due to overheating (blue converter).
• Steel particles or clutch lining material found in flui d filter or on magnet when no internal parts in unit are
worn or damaged — indicates that lining material came from converter.
The torque converter should not be replaced if:
• The fluid has an odor, is discolored, and there is no evidence of metal or clutch facing particles.
• The threads in one or more of the converter bolt holes are damaged.
• A/T malfunction did not display evidence of damaged or worn internal parts, steel particles or clutch plate lin-
ing material in unit and inside the fluid filter.
• Vehicle has been exposed to high mileage (only). The e xception may be where the torque converter clutch
dampener plate lining has seen excess wear by vehicles operated in heavy and/or constant traffic, such as
taxi, delivery or police use.
OBD-II SELF-DIAGNOSIS
• A/T self-diagnosis is performed by the TCM in combination with the ECM. The results can be read through the blinking pattern of the OD OFF indicator lamp or the malfunction indicator lamp (MIL). Refer to the table
on AT-82, "
Diagnosis Procedure without CONSULT-III" for the indicator used to display each self-diagnostic
result.
• The self-diagnostic results indicated by the MIL are automatically stored in both the ECM and TCM memo- ries.
Always perform the procedure “HOW TO ERASE DTC” on AT-39, "
OBD-II Diagnostic Trouble Code
(DTC)" to complete the repair and avoid unnecessary blinking of the MIL.
• The following self-diagnostic items can be detected us ing ECM self-diagnostic results mode* only when the
OD OFF indicator lamp does not indicate any malfunctions.
- Transmission range switch
- A/T 1GR, 2GR, 3GR, or 4GR function
Revision: May 2010 2011 Versa
Page 1086 of 3787
![NISSAN LATIO 2011 Service Repair Manual TROUBLE DIAGNOSISCVT-31
< SERVICE INFORMATION > [RE0F08B]
D
E
F
G H
I
J
K L
M A
B
CVT
N
O P
TCM Power Supply (Memory Back-up)
Transaxle assembly is protected by limiting the engine torque when the mem NISSAN LATIO 2011 Service Repair Manual TROUBLE DIAGNOSISCVT-31
< SERVICE INFORMATION > [RE0F08B]
D
E
F
G H
I
J
K L
M A
B
CVT
N
O P
TCM Power Supply (Memory Back-up)
Transaxle assembly is protected by limiting the engine torque when the mem](/img/5/57357/w960_57357-1085.png)
TROUBLE DIAGNOSISCVT-31
< SERVICE INFORMATION > [RE0F08B]
D
E
F
G H
I
J
K L
M A
B
CVT
N
O P
TCM Power Supply (Memory Back-up)
Transaxle assembly is protected by limiting the engine torque when the memory back-up power supply (for
controlling) from the battery is not supplied to TCM.
Normal statues is restored when turning the ignition switch
OFF to ON after the normal power supply.
How to Perform Trouble Diagnosis for Quick and Accurate RepairINFOID:0000000005928750
INTRODUCTION
The TCM receives a signal from the vehicle speed sensor, transmission range switch and provides shift con-
trol or lock-up control via CVT solenoid valves.
The TCM also communicates with the ECM by means of a signal
sent from sensing elements used wit h the OBD-related parts of the
CVT system for malfunction-diagnos tic purposes. The TCM is capa-
ble of diagnosing malfunctioning parts while the ECM can store mal-
functions in its memory.
Input and output signals must always be correct and stable in the
operation of the CVT system. The CVT system must be in good
operating condition and be free of valve seizure, solenoid valve mal-
function, etc.
It is much more difficult to diagnose an error that occurs intermit-
tently rather than continuously. Most intermittent errors are caused
by poor electric connections or impr oper wiring. In this case, careful
checking of suspected circuits may help prevent the replacement of
good parts.
A visual check only may not find t he cause of the errors. A road test
with CONSULT-III (or GST) or a circuit tester connected should be
performed. Follow the "WORK FLOW" .
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such errors, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A “DIAGNOSTIC WORKSHEET” as
shown on the example (Refer to "Diagnostic Worksheet Chart" )
should be used.
Start your diagnosis by looking for “conventional” errors first. This will
help troubleshoot driveability errors on an electronically controlled
engine vehicle.
Also check related Service bulletins.
WORK FLOW
A good understanding of the malfunction conditions can make troubleshooting faster and more accurate.
In general, each customer feels differently about a malf unction. It is important to fully understand the symp-
toms or conditions for a customer complaint.
Make good use of the two sheets provided, "Information From Customer" and "Diagnostic Worksheet Chart" ,
to perform the best troubleshooting possible.
Work Flow Chart
SAT631IB
SAT632I
SEF234G
Revision: May 2010 2011 Versa
Page 1105 of 3787
![NISSAN LATIO 2011 Service Repair Manual CVT-50
< SERVICE INFORMATION >[RE0F08B]
TROUBLE DIAGNOSIS
*: Models without ABS
does not indicate.
WORK SUPPORT MODE
Display Item List
Engine Brake Adjustment
CAUTION:
Mode of “+1”“0”“-1” NISSAN LATIO 2011 Service Repair Manual CVT-50
< SERVICE INFORMATION >[RE0F08B]
TROUBLE DIAGNOSIS
*: Models without ABS
does not indicate.
WORK SUPPORT MODE
Display Item List
Engine Brake Adjustment
CAUTION:
Mode of “+1”“0”“-1”](/img/5/57357/w960_57357-1104.png)
CVT-50
< SERVICE INFORMATION >[RE0F08B]
TROUBLE DIAGNOSIS
*: Models without ABS
does not indicate.
WORK SUPPORT MODE
Display Item List
Engine Brake Adjustment
CAUTION:
Mode of “+1”“0”“-1”“-2”“OFF” can be selected by pressing the “UP”“DOWN” on CONSULT-III screen.
However, do not select mode other th an “0” and “OFF”. If the “+1” or “-1” or “-2” is selected, that
might cause the irregular driveability.
Check CVT Fluid Deterioration Date
CAUTION:
Touch “CLEAR” after changing CVT fluid, and then erase “CVTF DETERIORATION DATE”.
SELF-DIAGNOSTIC RESULT MODE
After performing self-diagnosis, place check marks for results on the CVT-31, "How to Perform Trouble Diag-
nosis for Quick and Accurate Repair" . Reference pages are provided following the items.
Display Items List
X: Applicable —: Not applicable
LUSEL SOL OUTSelector lever in “P
” and “N” positions on
Wait at least for 5 seconds with the selector lever
in “R”, “D” and “L” positions off
RANGE Selector lever in “N
” or “P” position. N·P
Selector lever in “R” position. R
Selector lever in “D” position. D
Selector lever in “L” position. L
Item name
Condition Display value (Approx.)
Item name Description
ENGINE BRAKE ADJ. The engine brake level setting can be canceled.
CONFORM CVTF DETERIORTN The CVT fluid deterioration level can be checked.
“ENGINE BRAKE LEVEL”
0: Initial set value (Engine brake level control is ac-
tivated)
OFF: Engine brake level control is deactivated.
“CVTF DETERIORATION DATE”
More than 210000: It is necessary to change CVT fluid.
Less than 210000: It is not necessary to change CVT fluid.
Items (CONSULT-
III screen terms) Malfunction is detected when... TCM self-di-
agnosis OBD-III (DTC)
Reference page
“TRANSMIS-
SION” with
CONSULT-III MIL indicator
lamp*1, “EN-
GINE” with
CONSULT-III or GST
CAN COMM CIR-
CUIT When TCM is not transmitting or receiving CAN communica-
tion signal for 2 seconds or more
U1000 U1000
CVT-56
CONTROL
UNIT(CAN)When detecting error during the initial diagnosis of CAN con-
troller of TCM
U1010 U1010
CVT-59
Revision: May 2010 2011 Versa
Page 1301 of 3787

EC-7
C
DE
F
G H
I
J
K L
M
EC A
N
O P
Description ..........................................................
..
492
PRECAUTION ............................................493
PRECAUTIONS .............................................. ..493
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ..
493
Precaution for Procedure without Cowl Top Cover ..493
On Board Diagnosis (OBD) System of Engine and
A/T .........................................................................
493
General Precautions .............................................494
PREPARATION .........................................497
PREPARATION .............................................. ..497
Special Service Tools .......................................... ..497
Commercial Service Tools ....................................497
ON-VEHICLE MAINTENANCE ..................499
FUEL PRESSURE .......................................... ..499
Inspection ............................................................ ..499
EVAP LEAK CHECK ........................................501
Inspection ............................................................ ..501
SERVICE DATA AND SPECIFICATIONS
(SDS) ......... ................................. ................
503
SERVICE DATA AND SPECIFICATIONS
(SDS) .............................................................. ..
503
Idle Speed ........................................................... ..503
Ignition Timing .......................................................503
Calculated Load Value ..........................................503
Mass Air Flow Sensor ...........................................503
MR18DE
SERVICE INFORMATION .. .......................
504
INDEX FOR DTC ............................................ ..504
U0101-U1001 ...................................................... ..504
P0011-P0075 ........................................................504
P0101-P0128 ........................................................504
P0130-P0183 ........................................................505
P0222-P0420 ........................................................505
P0441-P0463 ........................................................506
P0500-P0643 ........................................................506
P0705-P0734 ........................................................507
P0740-P0840 ........................................................507
P0850-P1574 ........................................................508
P1610-P1615 ........................................................508
P1715-P1805 ........................................................508
P2100-P2A00 ........................................................509
PRECAUTIONS ................................................510
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ..
510
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ..
510
Precaution for Procedure without Cowl Top Cover ..511
On Board Diagnosis (OBD) System of Engine and
A/T, CVT ................................................................
511
Precaution .............................................................511
PREPARATION ...............................................515
Special Service Tool ..............................................515
Commercial Service Tool ......................................515
ENGINE CONTROL SYSTEM ........................517
Schematic ............................................................ ..517
Multiport Fuel Injection (MFI) System ....................517
Electronic Ignition (EI) System ..............................520
Fuel Cut Control (at No Load and High Engine
Speed) ...................................................................
520
AIR CONDITIONING CUT CONTROL ............522
Input/Output Signal Chart ......................................522
System Description ................................................522
AUTOMATIC SPEED CONTROL DEVICE
(ASCD) ............................................................
523
System Description ................................................523
Component Description .........................................524
CAN COMMUNICATION .................................525
System Description ................................................525
EVAPORATIVE EMISSION SYSTEM .............526
Description .............................................................526
Component Inspection ...........................................528
How to Detect Fuel Vapor Leakage .......................530
ON BOARD REFUELING VAPOR RECOV-
ERY (ORVR) ....................................................
532
System Description ................................................532
Diagnosis Procedure .............................................532
Component Inspection ...........................................535
POSITIVE CRANKCASE VENTILATION .......538
Description .............................................................538
Component Inspection ...........................................538
NVIS (NISSAN VEHICLE IMMOBILIZER SYS-
TEM-NATS) .....................................................
540
Description .............................................................540
ON BOARD DIAGNOSTIC (OBD) SYSTEM ..541
Introduction ............................................................541
Two Trip Detection Logic .......................................541
Emission-related Diagnostic Information ...............542
Malfunction Indicator Lamp (MIL) ..........................565
OBD System Operation Chart ...............................568
BASIC SERVICE PROCEDURE .....................574
Basic Inspection ....................................................574
Idle Speed and Ignition Timing Check ...................578
Procedure After Replacing ECM ...........................579
VIN Registration ....................................................580
Accelerator Pedal Released Position Learning .....580
Throttle Valve Closed Position Learning ...............580
Revision: May 2010 2011 Versa
Page 1791 of 3787
![NISSAN LATIO 2011 Service Repair Manual PREPARATIONEC-497
< PREPARATION > [HR16DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
PREPARATION
PREPARATION
Special Service ToolsINFOID:0000000005930164
NOTE:
The actual shapes of Kent-Moore tools may differ f NISSAN LATIO 2011 Service Repair Manual PREPARATIONEC-497
< PREPARATION > [HR16DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
PREPARATION
PREPARATION
Special Service ToolsINFOID:0000000005930164
NOTE:
The actual shapes of Kent-Moore tools may differ f](/img/5/57357/w960_57357-1790.png)
PREPARATIONEC-497
< PREPARATION > [HR16DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
PREPARATION
PREPARATION
Special Service ToolsINFOID:0000000005930164
NOTE:
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service ToolsINFOID:0000000005930165
Tool number
(Kent-Moore No.)
Tool name
Description
(J-44321)
Fuel pressure gauge
kit Checks fuel pressure
(J-44321-6)
Fuel pressure adapter Connects fuel pressure gauge to quick connector
type fuel lines.
KV10118400
Fuel tube adapter Measures fuel pressure
LEC642
LBIA0376E
PBIB3043E
Tool name
(Kent-Moore No.)
Description
Leak detector
i.e.: (J-41416) Locates the EVAP leak
EVAP service port
adapter
i.e.: (J-41413-OBD) Applies positive pressure through EVAP service
port
S-NT703
S-NT704
Revision: May 2010
2011 Versa
Page 1795 of 3787
![NISSAN LATIO 2011 Service Repair Manual EVAP LEAK CHECKEC-501
< ON-VEHICLE MAINTENANCE > [HR16DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
EVAP LEAK CHECK
InspectionINFOID:0000000005930167
CAUTION:
• Do not use compressed air or a high pressure pu NISSAN LATIO 2011 Service Repair Manual EVAP LEAK CHECKEC-501
< ON-VEHICLE MAINTENANCE > [HR16DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
EVAP LEAK CHECK
InspectionINFOID:0000000005930167
CAUTION:
• Do not use compressed air or a high pressure pu](/img/5/57357/w960_57357-1794.png)
EVAP LEAK CHECKEC-501
< ON-VEHICLE MAINTENANCE > [HR16DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
EVAP LEAK CHECK
InspectionINFOID:0000000005930167
CAUTION:
• Do not use compressed air or a high pressure pump.
• Do not exceed 4.12 kPa (0.042 kg/cm
2, 0.6 psi) of pressure in EVAP system.
NOTE:
• Do not start engine.
• Improper installation of EVAP service port adapter [commercial service tool: (J-41413-OBD)] to the EVAP service port may cause a leak.
WITH CONSULT-III
1. Install EVAP service port adapter [commercial service tool: (J- 41413-OBD)] and pressure pump to EVAP service port.
2. Turn ignition switch ON.
3. Select the “EVAP SYSTEM CLOSE” of “WORK SUPPORT” mode with CONSULT-III.
4. Touch “START”. A bar graph (Pressure indicating display) will appear on the screen.
5. Apply positive pressure to the EVAP system until the pressure indicator reaches the middle of the bar graph.
6. Remove EVAP service port adapter [commercial service tool: (J- 41413-OBD)] and hose with pressure pump.
7. Locate the leak using a leak detector [commercial service tool: (J-41416)]. Refer to EC-79, "
System Description".
WITHOUT CONSULT-III
1. Install EVAP service port adapter [commercial service tool: (J-
41413-OBD)] and pressure pump to EVAP service port.
2. Apply battery voltage between the terminals of EVAP canister vent control valve to make a closed EVAP system.
3. 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).
4. Remove EVAP service port adapter [commercial service tool: (J- 41413-OBD)] and hose with pressure pump.
SEF462UA
SEF200U
SEF462UA
Revision: May 2010 2011 Versa
Page 1809 of 3787
![NISSAN LATIO 2011 Service Repair Manual PREPARATIONEC-515
< SERVICE INFORMATION > [MR18DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
PREPARATION
Special Service ToolINFOID:0000000006341695
The actual shapes of Kent-Moore tools may differ from those o NISSAN LATIO 2011 Service Repair Manual PREPARATIONEC-515
< SERVICE INFORMATION > [MR18DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
PREPARATION
Special Service ToolINFOID:0000000006341695
The actual shapes of Kent-Moore tools may differ from those o](/img/5/57357/w960_57357-1808.png)
PREPARATIONEC-515
< SERVICE INFORMATION > [MR18DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
PREPARATION
Special Service ToolINFOID:0000000006341695
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service ToolINFOID:0000000006341696
Tool number
(Kent-Moore No.)
Tool name
Description
(J-44321)
Fuel pressure gauge
Kit Checking fuel pressure
(J-44321-6)
Fuel pressure adapter Connecting fuel pressure gauge to quick connec-
tor type fuel lines.
KV10118400
Fuel tube adapter Measuring fuel pressure
LEC642
LBIA0376E
PBIB3043E
Tool number
(Kent-Moore No.)
Tool name Description
Leak detector
i.e.: (J-41416) Locating the EVAP leak
EVAP service port
adapter
i.e.: (J-41413-OBD) Applying positive pressure through EVAP service
port
S-NT703
S-NT704
Revision: May 2010
2011 Versa
Page 1841 of 3787
![NISSAN LATIO 2011 Service Repair Manual ON BOARD DIAGNOSTIC (OBD) SYSTEMEC-547
< SERVICE INFORMATION > [MR18DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
Both 1st trip freeze frame data and freeze frame dat
a (along with the DTCs) are cleared when th NISSAN LATIO 2011 Service Repair Manual ON BOARD DIAGNOSTIC (OBD) SYSTEMEC-547
< SERVICE INFORMATION > [MR18DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
Both 1st trip freeze frame data and freeze frame dat
a (along with the DTCs) are cleared when th](/img/5/57357/w960_57357-1840.png)
ON BOARD DIAGNOSTIC (OBD) SYSTEMEC-547
< SERVICE INFORMATION > [MR18DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
Both 1st trip freeze frame data and freeze frame dat
a (along with the DTCs) are cleared when the ECM mem-
ory is erased. Procedures for clearing the ECM me mory are described in "EMISSION-RELATED DIAGNOS-
TIC INFORMATION ITEMS".
SYSTEM READINESS TEST (SRT) CODE
System Readiness Test (SRT) code is specified in Service $01 of SAE J1979/ISO 15031-5.
As part of an enhanced emissions test for Inspection & Ma intenance (I/M), certain states require the status of
SRT be used to indicate whether the ECM has comple ted self-diagnosis of major emission systems and com-
ponents. Completion must be verified in order for the emissions inspection to proceed.
If a vehicle is rejected for a State emissions inspection due to one or more SRT items indicating “INCMP”, use
the information in this Service Manual to set the SRT to “CMPLT”.
In most cases the ECM will automatically complete its self-diagnosis cycle during normal usage, and the SRT
status will indicate “CMPLT” for each application system. Once set as “CMPLT”, the SRT status remains
“CMPLT” until the self-diagnosis memory is erased.
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 i ndicates “INCMP” for one or more of the SRT items the
vehicle is returned to the customer untested.
NOTE:
If permanent DTC is stored or MIL illuminates 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 ”), DTC (No DTCs) and permanent DT C (No permanent 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 pr iority for
models with CONSULT-III.
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. T he set timing is different between OK and NG results and
is shown in the table below.
SRT item
(CONSULT-III indica- tion) 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 —
Heated oxygen sensor 2 P0137
Heated oxygen sensor 2 P0138
Heated oxygen sensor 2 P0139
EGR/VVT SYSTEM 3 Intake value timing control function P0011
Self-diagnosis resultExample
Diagnosis Ignition cycle
← ON → OFF ← ON → OFF ← ON → OFF ← ON →
Revision: May 2010 2011 Versa
Page 1847 of 3787
![NISSAN LATIO 2011 Service Repair Manual ON BOARD DIAGNOSTIC (OBD) SYSTEMEC-553
< SERVICE INFORMATION > [MR18DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
Suggested Maximum Speed in Each Gear
Downshift to a lower gear if the engine is not running smoo NISSAN LATIO 2011 Service Repair Manual ON BOARD DIAGNOSTIC (OBD) SYSTEMEC-553
< SERVICE INFORMATION > [MR18DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
Suggested Maximum Speed in Each Gear
Downshift to a lower gear if the engine is not running smoo](/img/5/57357/w960_57357-1846.png)
ON BOARD DIAGNOSTIC (OBD) SYSTEMEC-553
< SERVICE INFORMATION > [MR18DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
Suggested Maximum Speed in Each Gear
Downshift to a lower gear if the engine is not running smoothly, or if you need to accelerate.
Do not exceed the maximum suggested speed (shown below) in any gear. For level road driving, use the high-
est gear suggested for that speed. Always observe post
ed speed limits and drive according to the road condi-
tions to ensure safe operation. Do not over-rev t he engine when shifting to a lower gear as it may cause
engine damage or loss of vehicle control.
PERMANENT DIAGNOSTIC TROU BLE CODE (PERMANENT DTC)
Permanent DTC is defined in SAE J1979/ISO 15031-5 Service $0A.
ECM stores a DTC issuing a command of turning on MIL as a permanent DTC and keeps storing the DTC as
a permanent DTC until ECM judges that there is no presence of malfunction.
Permanent DTCs cannot be erased by using the Erase function of CONSULT-III or Generic Scan Tool (GST)
and by disconnecting the battery to shut off power to EC M. This prevents a vehicle from passing the state
emission inspection without repairing a malfunctioning part.
When not passing the state emission inspection due to more than one permanent DTC, permanent DTCs
should be erased, referring to this manual.
NOTE:
• The important items in state emission inspection are t hat MIL is not ON, SRT test items are set, and perma-
nent DTCs are not included.
• Permanent DTCs do not apply for regions that permanent DTCs are not regulated by law.
Permanent DTC Item
For permanent DTC items, MIL turns ON. Refer to EC-542, "Emission-related Diagnostic Information", “EMIS-
SION-RELATED DIAGNOSTIC INFORMATION ITEMS”.
Permanent DTC Set Timing
The setting timing of permanent DTC is stored in ECM with the lighting of MIL when a DTC is confirmed.
Permanent DTC Service Procedure
For normal acceleration in low alti-
tude areas
[less than 1,219 m (4,000 ft)]: For quick acceleration in low alti-
tude areas For high attitude areas
[over 1,219m (4,000 ft)]:
Gear change ACCEL shift point km/h (MPH) km/h (MPH)km/h (MPH)
1st to 2nd 13 (8)24 (15) 24 (15)
2nd to 3rd 27 (17)40 (25)40 (25)
3rd to 4th 40 (25)53 (33)65 (40)
4th to 5th 58 (36)71 (44)72 (45)
5th to 6th 82 (51)82 (51)82 (51)
Gear km/h (MPH)
1st 50 (30)
2nd 90 (55)
3rd —
4th —
5th —
6th —
Revision: May 2010 2011 Versa