Catalyst NISSAN TIIDA 2011 Service Owner's Guide

ECM
EC-479
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OP0118 0118 ECT SEN/CIRC
— 1×BEC-170
P0122 0122 TP SEN 2/CIRC-B1 — 1×BEC-174
P0123 0123 TP SEN 2/CIRC-B1 — 1×BEC-174
P0125 0125 ECT SENSOR — 2×BEC-178
P0127 0127 IAT SENSOR-B1 — 2×BEC-181
P0128 0128 THERMSTAT FNCTN — 2×BEC-183
P0130 0130 A/F SENSOR1 (B1) — 2×AEC-185
P0131 0131 A/F SENSOR1 (B1) — 2×BEC-191
P0132 0132 A/F SENSOR1 (B1) — 2×BEC-196
P0133 0133 A/F SENSOR1 (B1) ×2 ×AEC-201
P0137 0137 HO2S2 (B1) ×2 ×AEC-207
P0138 0138 HO2S2 (B1) ×2 ×AEC-215
P0139 0139 HO2S2 (B1) ×2 ×AEC-224
P0171 0171 FUEL SYS-LEAN-B1 — 2×BEC-232
P0172 0172 FUEL SYS-RICH-B1 — 2×BEC-238
P0181 0181 FTT SENSOR — 2×BEC-244
P0182 0182 FTT SEN/CIRCUIT — 2×BEC-249
P0183 0183 FTT SEN/CIRCUIT — 2×BEC-249
P0222 0222 TP SEN 1/CIRC-B1 — 1×BEC-253
P0223 0223 TP SEN 1/CIRC-B1 — 1×BEC-253
P0300 0300 MULTI CYL MISFIRE — 1 or 2×BEC-257
P0301 0301 CYL 1 MISFIRE — 1 or 2×BEC-257
P0302 0302 CYL 2 MISFIRE — 1 or 2×BEC-257
P0303 0303 CYL 3 MISFIRE — 1 or 2×BEC-257
P0304 0304 CYL 4 MISFIRE — 1 or 2×BEC-257
P0327 0327 KNOCK SEN/CIRC-B1 — 2——EC-263
P0328 0328 KNOCK SEN/CIRC-B1 — 2——EC-263
P0335 0335 CKP SEN/CIRCUIT — 2×BEC-267
P0340 0340 CMP SEN/CIRC-B1 — 2×BEC-272
P0420 0420 TW CATALYST SYS-B1 ×2 ×AEC-277
P0441 0441 EVAP PURG FLOW/MON ×2 ×AEC-282
P0442 0442 EVAP SMALL LEAK ×2 ×AEC-288
P0443 0443 PURG VOLUME CONT/V — 2×AEC-295
P0444 0444 PURG VOLUME CONT/V — 2×BEC-301
P0445 0445 PURG VOLUME CONT/V — 2×BEC-301
P0447 0447 VENT CONTROL VALVE — 2×BEC-305
P0448 0448 VENT CONTROL VALVE — 2×BEC-310
P0451 0451 EVAP SYS PRES SEN — 2×AEC-316
P0452 0452 EVAP SYS PRES SEN — 2×BEC-319
P0453 0453 EVAP SYS PRES SEN — 2×BEC-326
P0455 0455 EVAP GROSS LEAK — 2×AEC-333
P0456 0456 EVAP VERY SML LEAK
×*72 ×AEC-339
DTC*1
Items
(CONSULT-III screen terms) SRT
code Trip MIL Permanent
DTC
group*
4
Reference page
CONSULT-III
GST*
2ECM*3
Revision: May 2010 2011 Versa

EC-484
< ECU DIAGNOSIS >[HR16DE]
ECM
CATA-
LYST21H
Three way catalyst function
(Bank1) P0420 80H 01H O2 storage index
P0420 82H 01H
Switching time lag engine exhaust index
value
P2423 83H 0CH Difference in 3rd O2 sensor output volt-
age
P2423 84H 84H O2 storage index in HC trap catalyst
22H Three way catalyst function
(Bank2) P0430 80H 01H O2 storage index
P0430 82H 01H
Switching time lag engine exhaust index
value
P2424 83H 0CH Difference in 3rd O2 sensor output volt-
age
P2424 84H 84H O2 storage index in HC trap catalyst
EGR
SYSTEM 31H EGR function P0400 80H 96H
Low Flow Faults: EGR temp change
rate (short term)
P0400 81H 96H Low Flow Faults: EGR temp change
rate (long term)
P0400 82H 96H Low Flow Faults: Difference between
max EGR temp and EGR temp under
idling condition
P0400 83H 96H Low Flow Faults: Max EGR temp
P1402 84H 96H High Flow Faults: EGR temp increase
rate
VVT
SYSTEM 35H VVT Monitor (Bank1)
P0011 80H 9DH
VTC intake function diagnosis (VTC
alignment check diagnosis)
P0014 81H 9DH VTC exhaust function diagnosis (VTC
alignment check diagnosis)
P0011 82H 9DH VTC intake function diagnosis (VTC
drive failure diagnosis)
P0014 83H 9DH VTC exhaust function diagnosis (VTC
drive failure diagnosis)
36H VVT Monitor (Bank2) P0021 80H 9DH
VTC intake function diagnosis (VTC
alignment check diagnosis)
P0024 81H 9DH VTC exhaust function diagnosis (VTC
alignment check diagnosis)
P0021 82H 9DH VTC intake function diagnosis (VTC
drive failure diagnosis)
P0024 83H 9DH VTC exhaust function diagnosis (VTC
drive failure diagnosis)
Item
OBD-
MID Self-diagnostic test item
DTCTest value and Test
limit
(GST display) Description
TID Unit and
Scaling ID
Revision: May 2010 2011 Versa

ENGINE CONTROL SYSTEM SYMPTOMSEC-491
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1 - 6: The numbers refer to the order of inspection. Va l v e
mecha-
nism
Timing chain
55555 55 5 EM-49
Camshaft
EM-59
Intake valve timing controlEM-49
Intake valve
3EM-76
Exhaust valve
Exhaust Exhaust manifold/Tube/Muf- fler/Gasket 55555 55 5 EM-30
EX-4Three way catalyst
Lubrica-
tion Oil pan/Oil strainer/Oil pump/ Oil filter/Oil gallery/Oil cooler 55555 55 5EM-39
EM-42
LU-7
LU-9
Oil level (Low)/Filthy oil
LU-7
Cooling Radiator/Hose/Radiator filler
cap
55555 55 45 CO-14
CO-14
Thermostat
5CO-23
Water pump CO-21
Water galleryCO-9
Cooling fan
5CO-19
Coolant level (Low)/Contami-
nated coolant
CO-9
NVIS (NISSAN Vehicle Immobilizer Sys-
tem — NATS)11
BL-255
SYMPTOM
Reference page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code A
A AB AC AD AE AF AG AH AJ AK AL AM HA
Revision: May 2010
2011 Versa

EC-506
< SERVICE INFORMATION >[MR18DE]
INDEX FOR DTC
*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012/ISO 15031-6.
*3: In Diagnostic Test
Mode II (Self-diagnostic results), this number is controlled by NISSAN.
P0441-P0463INFOID:0000000006341682
*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012/ISO 15031-6.
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
P0500-P0643INFOID:0000000006341683
P0340 0340 CMP SEN/CIRC-B1 EC-799
P04200420 TW CATALYST SYS-B1 EC-805
DTC*1
Items
(CONSULT-III screen terms) Reference
CONSULT-III
GST*
2ECM*3
DTC*1 Items
(CONSULT-III screen terms) Reference
CONSULT-III
GST*
2ECM*3
P0441 0441 EVAP PURG FLOW/MON EC-810
P04420442 EVAP SMALL LEAK EC-815
P04430443 PURG VOLUME CONT/V EC-822
P04440444 PURG VOLUME CONT/V EC-830
P04450445 PURG VOLUME CONT/V EC-830
P04470447 VENT CONTROL VALVE EC-836
P04480448 VENT CONTROL VALVE EC-842
P04510451 EVAP SYS PRES SEN EC-848
P04520452 EVAP SYS PRES SEN EC-851
P04530453 EVAP SYS PRES SEN EC-858
P04550455 EVAP GROSS LEAK EC-866
P04560456 EVAP VERY SML LEAK EC-873
P04600460 FUEL LEV SEN SLOSH EC-881
P04610461 FUEL LEVEL SENSOR EC-883
P04620462 FUEL LEVL SEN/CIRC EC-885
P04630463 FUEL LEVL SEN/CIRC EC-885
DTC*1
Items
(CONSULT-III screen terms) Reference
CONSULT-III
GST*
2ECM*3
P0500 0500 VEH SPEED SEN/CIRC EC-887
P05060506 ISC SYSTEM EC-889
P05070507 ISC SYSTEM EC-891
P050A050A COLD START CONTROL EC-893
P050B050B COLD START CONTROL EC-893
P050E050E COLD START CONTROL EC-893
P06050605 ECM EC-895
Revision: May 2010 2011 Versa

ENGINE CONTROL SYSTEMEC-519
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The mixture ratio feedback system provides the best air/
fuel mixture ratio for drivability and emission control.
The three way catalyst (manifold) can then better r educe CO, HC and NOx emissions. This system uses air
fuel ratio (A/F) sensor 1 in the exhaust manifold to monitor whether the engine operation is rich or lean. The
ECM adjusts the injection pulse width according to the sensor voltage signal. For more information about air
fuel ratio (A/F) sensor 1, refer to EC-704
. This maintains the mixture ratio within the range of stoichiometric
(ideal air/fuel mixture).
This stage is referred to as the closed loop control condition.
Heated oxygen sensor 2 is located downstream of the th ree way catalyst (manifold). Even if the switching
characteristics of air fuel ratio (A/F) sensor 1 shift, the air/fuel ratio is controlled to stoichiometric by the signal
from heated oxygen sensor 2.
Open Loop Control
The open loop system condition refers to when the ECM detects any of the following conditions. Feedback
control stops in order to maintain stabilized fuel combustion.
• Deceleration and acceleration
• High-load, high-speed operation
• Malfunction of air fuel ratio (A/F) sensor 1 or its circuit
• Insufficient activation of air fuel ratio (A /F) sensor 1 at low engine coolant temperature
• High engine coolant temperature
• During warm-up
• After shifting from N to D (A/T and CVT models)
• When starting the engine
MIXTURE RATIO SELF-LEARNING CONTROL
The mixture ratio feedback control system monitors the mixture ratio signal tr ansmitted from air fuel ratio (A/F)
sensor 1. This feedback signal is then sent to the ECM. The ECM controls the basic mixture ratio as close to
the theoretical mixture ratio as possible. However, the bas ic mixture ratio is not necessarily controlled as orig-
inally designed. Both manufacturing differences (i.e., mass air flow sensor hot wire) and characteristic
changes during operation (i.e., fuel injector clogging) directly affect mixture ratio.
Accordingly, the difference between the basic and theoretical mixture ratios is monitored in this system. This is
then computed in terms of “injection pulse duration” to automatically compensate for the difference between
the two ratios.
“Fuel trim” refers to the feedback compensation value co mpared against the basic injection duration. Fuel trim
includes short term fuel trim and long term fuel trim.
“Short term fuel trim” is the short-term fuel compensati on used to maintain the mixture ratio at its theoretical
value. The signal from air fuel ratio (A/F) sensor 1 i ndicates whether the mixture ratio is RICH or LEAN com-
pared to the theoretical value. The signal then triggers a reduction in fuel volume if the mixture ratio is rich, and
an increase in fuel volume if it is lean.
“Long term fuel trim” is overall fuel compensation ca rried out long-term to compensate for continual deviation
of the short term fuel trim from the central value. Such deviation will occur due to individual engine differences,
wear over time and changes in the usage environment.
FUEL INJECTION TIMING
Two types of systems are used.
Sequential Multiport Fuel Injection System
Fuel is injected into each cylinder during each engine cycl e according to the firing order. This system is used
when the engine is running.
Simultaneous Multiport Fuel Injection System
Fuel is injected simultaneously into all four cylinders twice each engine cycle. In other words, pulse signals of
the same width are simultaneously transmitted from the ECM.
The four fuel injectors will then receive the signals two times for each engine cycle.
SEF337W
Revision: May 2010 2011 Versa

ON BOARD DIAGNOSTIC (OBD) SYSTEMEC-541
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ON BOARD DIAGNOSTIC (OBD) SYSTEM
IntroductionINFOID:0000000006341717
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:
*: Service $0A is not applied for regions where it is not mandated.
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-590, "
Fail-Safe Chart".)
Two Trip Detection LogicINFOID:0000000006341718
When a malfunction is detected for the first time, 1st tr ip 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” m eans a driving mode in which self-diagnosis is performed
during vehicle operation. Specific on board diagnostic item s 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
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 J1 979/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
Permanent Diagnostic Trouble Code (Permanent DTC) Service $0A* of SAE J1979/ISO 15031-5
DTC 1st trip DTCFreeze
Frame data 1st trip Freeze
Frame data SRT code SRT status Test value Permanent
DTC status
CONSULT-III ×× × × ×× —×
GST ×× × —××××
ECM ××*— — — ×——
Items MIL
DTC1st 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
(Refer to EC-542, "
Emission-relat-
ed Diagnostic Information".) —
×—— ×———
Except above — — —×— ×× —
Revision: May 2010 2011 Versa

ON BOARD DIAGNOSTIC (OBD) SYSTEMEC-543
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OA/F SENSOR1 (B1)
P014D 014D — 2 ×AEC-750
FUEL SYS-LEAN-B1 P0171 0171 — 2 ×BEC-758
FUEL SYS-RICH-B1 P0172 0172 — 2 ×BEC-764
FTT SENSOR P0181 0181 — 2 ×BEC-770
FTT SEN/CIRCUIT P0182 0182 — 2 ×BEC-774
FTT SEN/CIRCUIT P0183 0183 — 2 ×BEC-774
TP SEN 1/CIRC-B1 P0222 0222 — 1 ×BEC-778
TP SEN 1/CIRC-B1 P0223 0223 — 1 ×BEC-778
MULTI CYL MISFIRE P0300 0300 — 1 or 2 ×BEC-783
CYL 1 MISFIRE P0301 0301 — 1 or 2 ×BEC-783
CYL 2 MISFIRE P0302 0302 — 1 or 2 ×BEC-783
CYL 3 MISFIRE P0303 0303 — 1 or 2 ×BEC-783
CYL 4 MISFIRE P0304 0304 — 1 or 2 ×BEC-783
KNOCK SEN/CIRC-B1 P0327 0327 — 2 — —EC-789
KNOCK SEN/CIRC-B1 P0328 0328 — 2 — —EC-789
CKP SEN/CIRCUIT P0335 0335 — 2 ×BEC-793
CMP SEN/CIRC-B1 P0340 0340 — 2 ×BEC-799
TW CATALYST SYS-B1 P0420 0420× 2 ×AEC-805
EVAP PURG FLOW/MON P0441 0441×2 × AEC-810
EVAP SMALL LEAK P0442 0442×2 × AEC-815
PURG VOLUME CONT/V P0443 0443 — 2 ×AEC-822
PURG VOLUME CONT/V P0444 0444 — 2 ×BEC-830
PURG VOLUME CONT/V P0445 0445 — 2 ×BEC-830
VENT CONTROL VALVE P0447 0447 — 2 ×BEC-836
VENT CONTROL VALVE P0448 0448 — 2 ×BEC-842
EVAP SYS PRES SEN P0451 0451 — 2 ×AEC-848
EVAP SYS PRES SEN P0452 0452 — 2 ×BEC-851
EVAP SYS PRES SEN P0453 0453 — 2 ×BEC-858
EVAP GROSS LEAK P0455 0455 — 2 ×AEC-866
EVAP VERY SML LEAK P0456 0456
×*72 × AEC-873
FUEL LEV SEN SLOSH P0460 0460 — 2 ×AEC-881
FUEL LEVEL SENSOR P0461 0461 — 2 ×BEC-883
FUEL LEVL SEN/CIRC P0462 0462 — 2 ×BEC-885
FUEL LEVL SEN/CIRC P0463 0463 — 2 ×BEC-885
VEH SPEED SEN/CIRC*8P0500 0500 — 2 ×BEC-887
ISC SYSTEM P0506 0506 — 2 ×BEC-889
ISC SYSTEM P0507 0507 — 2 ×BEC-891
COLD START CONTROL P050A 050A — 2 ×AEC-893
COLD START CONTROL P050B 050B — 2 ×AEC-893
COLD START CONTROL P050E 050E — 2 ×AEC-893
ECM P0605 0605 — 1 or 2 — or ×B EC-895
Items
(CONSULT-III screen terms) DTC*
1
SRT
code Trip MIL Permanent
DTC
group
*4Reference
CONSULT-III
GST*
2ECM*3
Revision: May 2010 2011 Versa

ON BOARD DIAGNOSTIC (OBD) SYSTEMEC-547
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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

EC-558
< SERVICE INFORMATION >[MR18DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
CATA-
LYST21H
Three way catalyst function
(Bank1) P0420 80H 01H O2 storage index
P0420 82H 01H
Switching time lag engine exhaust index
value
P2423 83H 0CH Difference in 3rd O2 sensor output volt-
age
P2423 84H 84H O2 storage index in HC trap catalyst
22H Three way catalyst function
(Bank2) P0430 80H 01H O2 storage index
P0430 82H 01H
Switching time lag engine exhaust index
value
P2424 83H 0CH Difference in 3rd O2 sensor output volt-
age
P2424 84H 84H O2 storage index in HC trap catalyst
EGR
SYSTEM 31H EGR function P0400 80H 96H
Low Flow Faults: EGR temp change
rate (short term)
P0400 81H 96H Low Flow Faults: EGR temp change
rate (long term)
P0400 82H 96H Low Flow Faults: Difference between
max EGR temp and EGR temp under
idling condition
P0400 83H 96H Low Flow Faults: Max EGR temp
P1402 84H 96H High Flow Faults: EGR temp increase
rate
VVT
SYSTEM 35H VVT Monitor (Bank1)
P0011 80H 9DH
VTC intake function diagnosis (VTC
alignment check diagnosis)
P0014 81H 9DH VTC exhaust function diagnosis (VTC
alignment check diagnosis)
P0011 82H 9DH VTC intake function diagnosis (VTC
drive failure diagnosis)
P0014 83H 9DH VTC exhaust function diagnosis (VTC
drive failure diagnosis)
36H VVT Monitor (Bank2) P0021 80H 9DH
VTC intake function diagnosis (VTC
alignment check diagnosis)
P0024 81H 9DH VTC exhaust function diagnosis (VTC
alignment check diagnosis)
P0021 82H 9DH VTC intake function diagnosis (VTC
drive failure diagnosis)
P0024 83H 9DH VTC exhaust function diagnosis (VTC
drive failure diagnosis)
Item
OBD-
MID Self-diagnostic test item
DTCTest value and Test
limit
(GST display) Description
TID Unit and
Scaling ID
Revision: May 2010 2011 Versa

EC-566
< SERVICE INFORMATION >[MR18DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
The MIL is located on the instrument panel.
1. The MIL will light up when the ignition switch is turned ON with-
out the engine running. This is a bulb check.
If the MIL does not light up, refer to DI-21
or see EC-1033.
2. When the engine is started, the MIL should go off. If the MIL remains on, the on board diagnostic system has
detected an engine system malfunction.
ON BOARD DIAGNOSTIC SYSTEM FUNCTION
The on board diagnostic system has the following three functions.
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.
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 cont rol 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.
MIL Flashing Without DTC
When any SRT codes are not set, MIL may fl ash without DTC. For the details, refer to EC-542, "Emission-
related Diagnostic Information".
HOW TO SWITCH DIAGNOSTIC TEST MODE
NOTE:
•It is better to count the ti me accurately with a clock.
SEF217U
Diagnostic Test
Mode KEY and ENG.
Statu s Function
Explanation of Function
Mode I Ignition switch in
ON position
Engine stopped BULB CHECK
This function checks the MIL bulb for damage (blown, open
circuit, etc.).
If the MIL does not come on, check MIL circuit.
Engine running MALFUNCTION WARNING This is a usual driving condition. When a malfunction is de-
tected twice in two consecutive driving cycles (two trip de-
tection logic), the MIL will light up to inform the driver that a
malfunction has been detected.
The following malfunctions will light up or blink the MIL in
the 1st trip.
• Misfire (Possible three way catalyst damage)
• One trip detection diagnoses
Mode II Ignition switch in
ON position
Engine stopped SELF-DIAGNOSTIC
RESULTS
This function allows DTCs an
d 1st trip DTCs to be read.
Engine operating condition in fail-safe mode Engine speed will not rise more than 2,500 rpm due to the fuel cut
Revision: May 2010 2011 Versa