Nissan Murano Z50 (2004 year). Manual — part 71
ON BOARD DIAGNOSTIC (OBD) SYSTEM
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ON BOARD DIAGNOSTIC (OBD) SYSTEM
PFP:00028
Introduction
ABS004AM
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
ABS004AN
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 lighting MIL 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 control system malfunctions and MIL circuit is open by means
of operating fail-safe function.
Emission-related diagnostic information
SAE Mode
Diagnostic Trouble Code (DTC)
Mode 3 of SAE J1979
Freeze Frame data
Mode 2 of SAE J1979
System Readiness Test (SRT) code
Mode 1 of SAE J1979
1st Trip Diagnostic Trouble Code (1st Trip DTC)
Mode 7 of SAE J1979
1st Trip Freeze Frame data
Test values and Test limits
Mode 6 of SAE J1979
Calibration ID
Mode 9 of SAE J1979
DTC
1st trip DTC
Freeze Frame
data
1st trip Freeze
Frame data
SRT code
Test value
CONSULT-II
×
×
×
×
×
—
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 cata-
lyst damage) — DTC: P0300 -
P0306 is being detected
×
—
—
—
—
—
×
—
Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0306 is being detected
—
—
×
—
—
×
—
—
One trip detection diagnoses
(Refer to
.)
—
×
—
—
×
—
—
—
Except above
—
—
—
×
—
×
×
—
EC-48
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2004 November
2004 Murano
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 Information
ABS004AO
EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS
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 code
Test value/
Test limit
(GST only)
1st trip DTC
Reference
page
CONSULT-II
GST*
2
ECM*
3
CAN COMM CIRCUIT
U1000
1000*
5
—
—
—
CAN COMM CIRCUIT
U1001
1001*
5
—
—
×
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
P0000
0000
—
—
—
—
INT/V TIM CONT-B1
P0011
0011
—
—
×
INT/V TIM CONT-B2
P0021
0021
—
—
×
HO2S2 HTR (B1)
P0037
0037
×
×
×
HO2S2 HTR (B1)
P0038
0038
×
×
×
HO2S2 HTR (B2)
P0057
0057
×
×
×
HO2S2 HTR (B2)
P0058
0058
×
×
×
MAF SEN/CIRCUIT
P0101
0101
—
—
—
MAF SEN/CIRCUIT
P0102
0102
—
—
—
MAF SEN/CIRCUIT
P0103
0103
—
—
—
IAT SEN/CIRCUIT
P0112
0112
—
—
×
IAT SEN/CIRCUIT
P0113
0113
—
—
×
ECT SEN/CIRCUIT
P0117
0117
—
—
—
ECT SEN/CIRCUIT
P0118
0118
—
—
—
TP SEN 2/CIRC
P0122
0122
—
—
—
TP SEN 2/CIRC
P0123
0123
—
—
—
ECT SENSOR
P0125
0125
—
—
—
IAT SENSOR
P0127
0127
—
—
×
THERMSTAT FNCTN
P0128
0128
—
—
×
HO2S2 (B1)
P0138
0138
—
×
×
HO2S2 (B1)
P0139
0139
×
×
×
HO2S2 (B2)
P0158
0158
—
×
×
HO2S2 (B2)
P0159
0159
×
×
×
FUEL SYS-LEAN-B1
P0171
0171
—
—
×
FUEL SYS-RICH-B1
P0172
0172
—
—
×
FUEL SYS-LEAN-B2
P0174
0174
—
—
×
FUEL SYS-RICH-B2
P0175
0175
—
—
×
FTT SENSOR
P0181
0181
—
—
×
FTT SEN/CIRCUIT
P0182
0182
—
—
×
FTT SEN/CIRCUIT
P0183
0183
—
—
×
TP SEN 1/CIRC
P0222
0222
—
—
—
TP SEN 1/CIRC
P0223
0223
—
—
—
MULTI CYL MISFIRE
P0300
0300
—
—
×
CYL 1 MISFIRE
P0301
0301
—
—
×
ON BOARD DIAGNOSTIC (OBD) SYSTEM
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CYL 2 MISFIRE
P0302
0302
—
—
×
CYL 3 MISFIRE
P0303
0303
—
—
×
CYL 4 MISFIRE
P0304
0304
—
—
×
CYL 5 MISFIRE
P0305
0305
—
—
×
CYL 6 MISFIRE
P0306
0306
—
—
×
KNOCK SEN/CIRC-B1
P0327
0327
—
—
×
KNOCK SEN/CIRC-B1
P0328
0328
—
—
×
CKP SEN/CIRCUIT
P0335
0335
—
—
×
CMP SEN/CIRC-B1
P0340
0340
—
—
×
CMP SEN/CIRC-B2
P0345
0345
—
—
×
TW CATALYST SYS-B1
P0420
0420
×
×
×
TW CATALYST SYS-B2
P0430
0430
×
×
×
EVAP PURG FLOW/MON
P0441
0441
×
×
×
EVAP SMALL LEAK
P0442
0442
×
×
×
PURG VOLUME CONT/V
P0444
0444
—
—
×
PURG VOLUME CONT/V
P0445
0445
—
—
×
VENT CONTROL VALVE
P0447
0447
—
—
×
EVAP SYS PRES SEN
P0451
0451
—
—
×
EVAP SYS PRES SEN
P0452
0452
—
—
×
EVAP SYS PRES SEN
P0453
0453
—
—
×
EVAP GROSS LEAK
P0455
0455
—
×
×
EVAP VERY SML LEAK
P0456
0456
×
*
4
×
×
FUEL LEV SEN SLOSH
P0460
0460
—
—
×
FUEL LEVEL SENSOR
P0461
0461
—
—
×
FUEL LEVL SEN/CIRC
P0462
0462
—
—
×
FUEL LEVL SEN/CIRC
P0463
0463
—
—
×
VEH SPEED SEN/CIRC*
6
P0500
0500
—
—
×
ISC SYSTEM
P0506
0506
—
—
×
ISC SYSTEM
P0507
0507
—
—
×
PW ST P SEN/CIRC
P0550
0550
—
—
×
ECM
P0605
0605
—
—
×
or —
PNP SW/CIRC
P0705
0705
—
—
×
ATF TEMP SEN/CIRC
P0710
0710
—
—
—
INPUT SPD SEN/CIRC
(IN PY SPD SEN/CIRC)*
7
P0715
0715
—
—
×
VEH SPD SEN/CIR AT*
6
P0720
0720
—
—
×
TCC SOLENOID/CIRC
P0740
0740
—
—
×
A/T TCC S/V FNCTN
P0744
0744
—
—
×
L/PRESS SOL/CIRC
P0745
0745
—
—
×
PRS CNT SOL/A FCTN
(—)*
7
P0746
0746
—
—
—
Items
(CONSULT-II screen terms)
DTC*
1
SRT code
Test value/
Test limit
(GST only)
1st trip DTC
Reference
page
CONSULT-II
GST*
2
ECM*
3
EC-50
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2004 November
2004 Murano
PRS CNT SOL/B FCTN
(—)*
7
P0776
0776
—
—
×
PRS CNT SOL/B CIRC
(—)*
7
P0778
0778
—
—
×
TR PRS SENS/A CIRC
(—)*
7
P0840
0840
—
—
×
TR PRS SENS/B CIRC
(—)*
7
P0845
0845
—
—
×
A/F SEN1 HTR (B1)
P1031
1031
×
×
×
A/F SEN1 HTR (B1)
P1032
1032
×
×
×
A/F SEN1 HTR (B2)
P1051
1051
×
×
×
A/F SEN1 HTR (B2)
P1052
1052
×
×
×
ECM BACK UP/CIRC
P1065
1065
—
—
×
INT/V TIM V/CIR-B1
P1111
1111
—
—
×
ETC ACTR
P1121
1121
—
—
—
ETC FUNCTION/CIRC
P1122
1122
—
—
—
ETC MOT PWR
P1124
1124
—
—
—
ETC MOT PWR
P1126
1126
—
—
—
ETC MOT
P1128
1128
—
—
—
INT/V TIM V/CIR-B2
P1136
1136
—
—
×
HO2S2 (B1)
P1146
1146
×
×
×
HO2S2 (B1)
P1147
1147
×
×
×
CLOSED LOOP-B1
P1148
1148
—
—
—
HO2S2 (B2)
P1166
1166
×
×
×
HO2S2 (B2)
P1167
1167
×
×
×
CLOSED LOOP-B2
P1168
1168
—
—
—
TCS C/U FUNCTN
P1211
1211
—
—
×
TCS/CIRC
P1212
1212
—
—
×
ENG OVER TEMP
P1217
1217
—
—
—
CTP LEARNING
P1225
1225
—
—
×
CTP LEARNING
P1226
1226
—
—
×
SENSOR POWER/CIRC
P1229
1229
—
—
—
A/F SENSOR1 (B1)
P1271
1271
—
—
×
A/F SENSOR1 (B1)
P1272
1272
—
—
×
A/F SENSOR1 (B1)
P1273
1273
—
—
×
A/F SENSOR1 (B1)
P1274
1274
—
—
×
A/F SENSOR1 (B1)
P1276
1276
—
—
×
A/F SENSOR1 (B1)
P1278
1278
×
×
×
A/F SENSOR1 (B1)
P1279
1279
×
×
×
A/F SENSOR1 (B2)
P1281
1281
—
—
×
A/F SENSOR1 (B2)
P1282
1282
—
—
×
A/F SENSOR1 (B2)
P1283
1283
—
—
×
A/F SENSOR1 (B2)
P1284
1284
—
—
×
Items
(CONSULT-II screen terms)
DTC*
1
SRT code
Test value/
Test limit
(GST only)
1st trip DTC
Reference
page
CONSULT-II
GST*
2
ECM*
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: SRT code will not be set if the self-diagnostic result is NG.
*5: The troubleshooting for this DTC need CONSULT-II.
*6: When the fail-safe operations for both self-diagnoses occur at the same time, the MIL illuminates.
*7: CONSULT-II screen terms are shown differently depending on the version of CONSULT-II card.
A/F SENSOR1 (B2)
P1286
1286
—
—
×
A/F SENSOR1 (B2)
P1288
1288
×
×
×
A/F SENSOR1 (B2)
P1289
1289
×
×
×
PURG VOLUME CONT/V
P1444
1444
—
—
×
VENT CONTROL VALVE
P1446
1446
—
—
×
ASCD SW
P1564
1564
—
—
—
ASCD BRAKE SW
P1572
1572
—
—
—
ASCD VHL SPD SEN
P1574
1574
—
—
—
NATS MALFUNCTION
P1610 -
P1615
1610 - 1615
—
—
×
CVT C/U FUNCT
P1700
1700
—
—
—
P-N POS SW/CIRCUIT
P1706
1706
—
—
×
IN PULY SPEED
P1715
1715
—
—
×
V/SP SEN (A/T OUT)
P1720
1720
—
—
×
LU-SLCT SOL/CIRC
(—)*
7
P1740
1740
—
—
×
STEP MOTR CIRC
P1777
1777
—
—
—
STEP MOTR FNC
P1778
1778
—
—
×
VIAS S/V CIRC
P1800
1800
—
—
×
BRAKE SW/CIRCUIT
P1805
1805
—
—
×
APP SEN 1/CIRC
P2122
2122
—
—
—
APP SEN 1/CIRC
P2123
2123
—
—
—
APP SEN 2/CIRC
P2127
2127
—
—
—
APP SEN 2/CIRC
P2128
2128
—
—
—
TP SENSOR
P2135
2135
—
—
—
APP SENSOR
P2138
2138
—
—
—
Items
(CONSULT-II screen terms)
DTC*
1
SRT code
Test value/
Test limit
(GST only)
1st trip DTC
Reference
page
CONSULT-II
GST*
2
ECM*
3
EC-52
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2004 November
2004 Murano
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
TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION"
For malfunctions in which 1st trip DTCs are displayed, refer to
EC-48, "EMISSION-RELATED DIAGNOSTIC
. 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 Mode 7 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 vehi-
cle 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 II, refer to
. 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, P1148, P1706, 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, 1148, 1706, 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.
A sample of CONSULT-II display for DTC and 1st trip DTC is shown below. DTC or 1st trip DTC of a malfunc-
tion is displayed in SELF-DIAGNOSTIC RESULTS mode of CONSULT-II. Time data indicates how many times
the vehicle was driven after the last detection of a DTC.
If the DTC is being detected currently, the time data will be [0].
If a 1st trip DTC is stored in the ECM, the time data will be [1t].
PBIB0911E
ON BOARD DIAGNOSTIC (OBD) SYSTEM
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FREEZE FRAME DATA AND 1ST TRIP FREEZE FRAME DATA
The ECM records the driving conditions such as fuel system status, calculated load value, engine coolant tem-
perature, short term fuel trim, long term fuel trim, engine speed, vehicle speed, base fuel schedule and intake
air temperature at the moment a malfunction is detected.
Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data.
The data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-II or
GST. The 1st trip freeze frame data can only be displayed on the CONSULT-II screen, not on the GST. For
details, see
EC-109, "Freeze Frame Data and 1st Trip Freeze Frame Data"
Only one set of freeze frame data (either 1st trip freeze frame data or freeze frame data) can be stored in the
ECM. 1st trip freeze frame data is stored in the ECM memory along with the 1st trip DTC. There is no priority
for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once
freeze frame data (2nd trip detection/MIL on) is stored in the ECM memory, 1st trip freeze frame data is no
longer stored. Remember, only one set of freeze frame data can be stored in the ECM. The ECM has the fol-
lowing priorities to update the data.
For example, the EGR malfunction (Priority: 2) was detected and the freeze frame data was stored in the 2nd
trip. After that when the misfire (Priority: 1) is detected in another trip, the freeze frame data will be updated
from the EGR malfunction to the misfire. The 1st trip freeze frame data is updated each time a different mal-
function is detected. There is no priority for 1st trip freeze frame data. However, once freeze frame data is
stored in the ECM memory, 1st trip freeze data is no longer stored (because only one freeze frame data or 1st
trip freeze frame data can be stored in the ECM). If freeze frame data is stored in the ECM memory and freeze
frame data with the same priority occurs later, the first (original) freeze frame data remains unchanged in the
ECM memory.
Both 1st trip freeze frame data and freeze frame data (along with the DTCs) are cleared when the ECM mem-
ory is erased. Procedures for clearing the ECM memory are described in
SION-RELATED DIAGNOSTIC INFORMATION"
SYSTEM READINESS TEST (SRT) CODE
System Readiness Test (SRT) code is specified in Mode 1 of SAE J1979.
As part of an enhanced emissions test for Inspection & Maintenance (I/M), certain states require the status of
SRT be used to indicate whether the ECM has completed 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 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.
Priority
Items
1
Freeze frame data
Misfire — DTC: P0300 - P0306
Fuel Injection System Function — DTC: P0171, P0172, P0174, P0175
2
Except the above items (Includes CVT related items)
3
1st trip freeze frame data
EC-54
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2004 November
2004 Murano
SRT Item
The table below shows required self-diagnostic items to set the SRT to “CMPLT”.
*1: 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.
OK: Self-diagnosis is carried out and the result is OK.
NG: Self-diagnosis is carried out and the result is NG.
—: Self-diagnosis is not carried out.
When all SRT related self-diagnoses showed OK results in a single cycle (Ignition OFF-ON-OFF), the SRT will
indicate “CMPLT”.
→
Case 1 above
When all SRT related self-diagnoses showed OK results through several different cycles, the SRT will indicate
“CMPLT” at the time the respective self-diagnoses have at least one OK result.
→
Case 2 above
SRT item
(CONSULT-II indication)
Performance
Priority*1
Required self-diagnostic items to set the SRT to “CMPLT”
Corresponding
DTC No.
CATALYST
2
Three way catalyst function
P0420, P0430
EVAP SYSTEM
2
EVAP control system purge flow monitoring
P0441
1
EVAP control system
P0442
2
EVAP control system
P0456
HO2S
2
A/F sensor 1
P1278, P1288
A/F sensor 1
P1279, P1289
Heated oxygen sensor 2
P0139, P0159
Heated oxygen sensor 2
P1146, P1166
Heated oxygen sensor 2
P1147, P1167
HO2S HTR
2
A/F sensor 1 heater
P1031, P1032,
P1051, P1052
Heated oxygen sensor 2 heater
P0037, P0038,
P0057, P0058
Self-diagnosis result
Example
Diagnosis
Ignition 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
—
NG
NG
(Consecutive
NG)
(1st trip)
DTC
1st trip DTC
—
1st trip DTC
DTC
(= MIL ON)
SRT of EGR
“INCMP”
“INCMP”
“INCMP”
“CMPLT”
ON BOARD DIAGNOSTIC (OBD) SYSTEM
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If one or more SRT related self-diagnoses showed NG results in 2 consecutive cycles, the SRT will also indi-
cate “CMPLT”.
→
Case 3 above
The table above shows that the minimum number of cycles for setting SRT as “INCMP” is one (1) for each
self-diagnosis (Case 1 & 2) or two (2) for one of self-diagnoses (Case 3). However, in preparation for the state
emissions inspection, it is unnecessary for each self-diagnosis to be executed twice (Case 3) for the following
reasons:
●
The SRT will indicate “CMPLT” at the time the respective self-diagnoses have one (1) OK result.
●
The emissions inspection requires “CMPLT” of the SRT only with OK self-diagnosis results.
●
When, during SRT driving pattern, 1st trip DTC (NG) is detected prior to “CMPLT” of SRT, the self-diagno-
sis memory must be erased from ECM after repair.
●
If the 1st trip DTC is erased, all the SRT will indicate “INCMP”.
NOTE:
SRT can be set as “CMPLT” together with the DTC(s). Therefore, DTC check must always be carried out
prior to the state emission inspection even though the SRT indicates “CMPLT”.
SRT Service Procedure
If a vehicle has failed the state emissions inspection due to one or more SRT items indicating “INCMP”, review
the flowchart diagnostic sequence on the next page.
EC-56
ON BOARD DIAGNOSTIC (OBD) SYSTEM
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How to Display SRT Code
WITH CONSULT-II
Selecting “SRT STATUS” in “DTC CONFIRMATION” mode with
CONSULT-II.
For items whose SRT codes are set, a “CMPLT” is displayed on the
CONSULT-II screen; for items whose SRT codes are not set,
“INCMP” is displayed.
A sample of CONSULT-II display for SRT code is shown at right.
“INCMP” means the self-diagnosis is incomplete and SRT is not set.
“CMPLT” means the self-diagnosis is complete and SRT is set.
WITH GST
Selecting Mode 1 with GST (Generic Scan Tool)
*1
*2
*3
SEF573XA
SEF935Z
ON BOARD DIAGNOSTIC (OBD) SYSTEM
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How to Set SRT Code
To set all SRT codes, self-diagnosis for the items indicated above must be performed one or more times. Each
diagnosis may require a long period of actual driving under various conditions.
WITH CONSULT-II
Perform corresponding DTC Confirmation Procedure one by one based on Performance Priority in the table
on
.
WITHOUT CONSULT-II
The most efficient driving pattern in which SRT codes can be properly set is explained on the next page. The
driving pattern should be performed one or more times to set all SRT codes.
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Driving Pattern
PBIB2243E
ON BOARD DIAGNOSTIC (OBD) SYSTEM
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●
The time required for each diagnosis varies with road surface conditions, weather, altitude, individual driv-
ing habits, etc.
Zone A refers to the range where the time, required for the diagnosis under normal conditions*, is the
shortest.
Zone B refers to the range where the diagnosis can still be performed if the diagnosis is not completed
within zone A.
*: Normal conditions refer to the following:
●
Sea level
●
Flat road
●
Ambient air temperature: 20 - 30
°
C (68 - 86
°
F)
●
Diagnosis is performed as quickly as possible under normal conditions.
Under different conditions [For example: ambient air temperature other than 20 - 30
°
C (68 - 86
°
F)], diag-
nosis may also be performed.
Pattern 1:
●
The engine is started at the engine coolant temperature of
−
10 to 35
°
C (14 to 95
°
F)
(where the voltage between the ECM terminal 73 and ground is 3.0 - 4.3V).
●
The engine must be operated at idle speed until the engine coolant temperature is greater than
70
°
C (158
°
F) (where the voltage between the ECM terminal 73 and ground is lower than 1.4V).
●
The engine is started at the fuel tank temperature of warmer than 0
°
C (32
°
F) (where the voltage
between the ECM terminal 107 and ground is less than 4.1V).
Pattern 2:
●
When steady-state driving is performed again even after it is interrupted, each diagnosis can be con-
ducted. In this case, the time required for diagnosis may be extended.
Pattern 3:
●
Operate vehicle following the driving pattern shown in the figure.
●
Release the accelerator pedal during decelerating vehicle speed
from 90 km/h (56 MPH) to 0 km/h (0 MPH).
Pattern 4:
●
The accelerator pedal must be held very steady during steady-
state driving.
●
If the accelerator pedal is moved, the test must be conducted all
over again.
*1: Depress the accelerator pedal until vehicle speed is 90 km/h (56
MPH), then release the accelerator pedal and keep it released for
more than 10 seconds. Depress the accelerator pedal until vehicle
speed is 90 km/h (56 MPH) again.
*2: Checking the vehicle speed with GST is advised.
Suggested Transmission Gear Position
Set the selector lever in the D position.
TEST VALUE AND TEST LIMIT (GST ONLY — NOT APPLICABLE TO CONSULT-II)
The following is the information specified in Mode 6 of SAE J1979.
The test value is a parameter used to determine whether a system/circuit diagnostic test is OK or NG while
being monitored by the ECM during self-diagnosis. The test limit is a reference value which is specified as the
maximum or minimum value and is compared with the test value being monitored.
These data (test value and test limit) are specified by Test ID (TID) and Component ID (CID) and can be dis-
played on the GST screen.
PBIB2244E
Item
Self-diagnostic test item
DTC
Test value (GST display)
Test limit
Conversion
TID
CID
CATALYST
Three way catalyst function (Bank 1)
P0420
01H
01H
Max.
1/128
P0420
02H
81H
Min.
1
Three way catalyst function (Bank 2)
P0430
03H
02H
Max.
1/128
P0430
04H
82H
Min.
1
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ON BOARD DIAGNOSTIC (OBD) SYSTEM
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EVAP
SYSTEM
EVAP control system (Small leak)
P0442
05H
03H
Max.
1/128 mm
2
EVAP control system purge flow monitoring
P0441
06H
83H
Min.
20 mV
EVAP control system (Very small leak)
P0456
07H
03H
Max.
1/128 mm
2
HO2S
Air fuel ratio (A/F) sensor 1 (Bank 1)
P1271
41H
8EH
Min.
5mV
P1272
42H
0EH
Max.
5mV
P1273
43H
0EH
Max.
0.002
P1274
44H
8EH
Min.
0.002
P1278 45H 8EH Min. 0.004
P1276
46H
0EH
Max.
5mV
P1276
47H
8EH
Min.
5mV
P1279 48H 8EH Min. 0.004
Air fuel ratio (A/F) sensor 1 (Bank 2)
P1281
4CH
8FH
Min.
5mV
P1282
4DH
0FH
Max.
5mV
P1283
4EH
0FH
Max.
0.002
P1284
4FH
8FH
Min.
0.002
P1288 50H 8FH Min. 0.004
P1286
51H
0FH
Max.
5mV
P1286
52H
8FH
Min.
5mV
P1289 53H 8FH Min. 0.004
Heated oxygen sensor 2 (Bank 1)
P0138
1CH
06H
Max.
10mV
P0139
19H
86H
Min.
10mV/500 ms
P1147
1AH
86H
Min.
10 mV
P1146
1BH
06H
Max.
10 mV
Heated oxygen sensor 2 (Bank 2)
P0158
24H
07H
Max.
10mV
P0159
21H
87H
Min.
10 mV/500 ms
P1167
22H
87H
Min.
10 mV
P1166
23H
07H
Max.
10 mV
HO2S
HEATER
Air fuel ratio (A/F) sensor 1 heater (Bank 1)
P1032
57H
10H
Max.
5 mV
P1031
58H
90H
Min.
5 mV
Air fuel ratio (A/F) sensor 1 heater (Bank 2)
P1052
59H
11H
Max.
5 mV
P1051
5AH
91H
Min.
5 mV
Heated oxygen sensor 2 heater (Bank 1)
P0038
2DH
0AH
Max.
20 mV
P0037
2EH
8AH
Min.
20 mV
Heated oxygen sensor 2 heater (Bank 2)
P0058
2FH
0BH
Max.
20 mV
P0057
30H
8BH
Min.
20 mV
Item
Self-diagnostic test item
DTC
Test value (GST display)
Test limit
Conversion
TID
CID
ON BOARD DIAGNOSTIC (OBD) SYSTEM
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HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION
How to Erase DTC
WITH CONSULT-II
The emission related diagnostic information in the ECM can be erased by selecting “ERASE” in the “SELF-
DIAG RESULTS” mode with CONSULT-II.
If DTCs are displayed for both ECM and TCM (Transmission control module), they need to be erased individu-
ally from the ECM and TCM (Transmission control module).
NOTE:
If the DTC is not for CVT related items (see
1.
If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
2.
Turn CONSULT-II ON and touch “TRANSMISSION”.
3.
Touch “SELF-DIAG RESULTS”.
4.
Touch “ERASE”. [The DTC in the TCM (Transmission control module) will be erased.] Then touch “BACK”
twice.
5.
Touch “ENGINE”.
6.
Touch “SELF-DIAG RESULTS”.
7.
Touch “ERASE”. (The DTC in the ECM will be erased.)
WITH GST
The emission related diagnostic information in the ECM can be erased by selecting Mode 4 with GST.
NOTE:
If the DTC is not for CVT related items (see
1.
If the ignition switch stays ON after repair work, be sure to turn ignition switch “OFF” once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
SCIA5442E
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2.
Perform
CVT-29, "HOW TO ERASE DTC (WITH GST)"
. (The DTC in TCM will be erased)
3.
Select Mode 4 with GST (Generic Scan Tool).
●
If the battery is disconnected, the emission-related diagnostic information will be lost within 24
hours.
●
The following data are cleared when the ECM memory is erased.
–
Diagnostic trouble codes
–
1st trip diagnostic trouble codes
–
Freeze frame data
–
1st trip freeze frame data
–
System readiness test (SRT) codes
–
Test values
–
Others
Actual work procedures are explained using a DTC as an example. Be careful so that not only the DTC, but all
of the data listed above, are cleared from the ECM memory during work procedures.
NVIS (Nissan Vehicle Immobilizer System — NATS)
ABS004AP
●
If the security indicator lights up with the ignition switch in
the ON position or “NATS MALFUNCTION” is displayed on
“SELF-DIAG RESULTS” screen, perform self-diagnostic
results mode with CONSULT-II using NATS program card.
Refer to
BL-120, "NVIS (NISSAN VEHICLE IMMOBILIZER
.
●
Confirm no self-diagnostic results of NVIS (NATS) is dis-
played before touching “ERASE” in “SELF-DIAG RESULTS”
mode with CONSULT-II.
●
When replacing ECM, initialization of NVIS (NATS) system
and registration of all NVIS (NATS) ignition key IDs must be
carried out with CONSULT-II using NATS program card.
Therefore, be sure to receive all keys from vehicle owner. Regarding the procedures of NVIS
(NATS) initialization and NVIS (NATS) ignition key ID registration, refer to CONSULT-II operation
manual, IVIS/NVIS.
Malfunction Indicator Lamp (MIL)
ABS004AQ
DESCRIPTION
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
,
or see
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.
SEF543X
SEF217U
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