ecm INFINITI M35 2007 Factory Service Manual

EVAPORATIVE EMISSION SYSTEM
EC-741
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EVAPORATIVE EMISSION SYSTEMPFP:14950
DescriptionNBS0059R
SYSTEM DESCRIPTION
The evaporative emission system is used to reduce hydrocarbons emitted into the atmosphere from the fuel
system. This reduction of hydrocarbons is accomplished by activated charcoals in the EVAP canister.
The fuel vapor in the sealed fuel tank is led into the EVAP canister which contains activated carbon and the
vapor is stored there when the engine is not operating or when refueling to the fuel tank.
The vapor in the EVAP canister is purged by the air through the purge line to the intake manifold when the
engine is operating. EVAP canister purge volume control solenoid valve is controlled by ECM. When the
engine operates, the flow rate of vapor controlled by EVAP canister purge volume control solenoid valve is
proportionally regulated as the air flow increases.
EVAP canister purge volume control solenoid valve also shuts off the vapor purge line during decelerating and
idling.
PBIB1631E

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
EC-755
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Revision: 2007 April2007 M35/M45
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)PFP:28591
DescriptionNBS005A0

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-244, "
IVIS (INFINITI VEHICLE IMMOBILIZER
SYSTEM-NATS)" .

Confirm no self-diagnostic results of IVIS (NATS) is dis-
played before touching “ERASE” in “SELF-DIAG RESULTS”
mode with CONSULT-II.

When replacing ECM, initialization of IVIS (NATS) system
and registration of all IVIS (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 IVIS (NATS)
initialization and IVIS (NATS) ignition key ID registration, refer to CONSULT-II operation manual,
IVIS/NVIS.
SEF543X

EC-756
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ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2007 April2007 M35/M45
ON BOARD DIAGNOSTIC (OBD) SYSTEMPFP:00028
IntroductionNBS005A1
The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actua-
tors. The ECM also records various emission-related diagnostic information including:
The above information can be checked using procedures listed in the table below.
×: Applicable —: Not applicable
*: When DTC and 1st trip DTC simultaneously appear on the display, they cannot be clearly distinguished from each other.
The malfunction indicator lamp (MIL) on the instrument panel lights up when the same malfunction is detected
in two consecutive trips (Two trip detection logic), or when the ECM enters fail-safe mode. (Refer to EC-800,
"Fail-Safe Chart" .)
Two Trip Detection LogicNBS005A2
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 up MIL when there is
malfunction on engine control system.
Emission-related diagnostic information Diagnostic service
Diagnostic Trouble Code (DTC) Service $03 of SAE J1979
Freeze Frame data Service $02 of SAE J1979
System Readiness Test (SRT) code Service $01 of SAE J1979
1st Trip Diagnostic Trouble Code (1st Trip DTC) Service $07 of SAE J1979
1st Trip Freeze Frame data
Test values and Test limits Service $06 of SAE J1979
Calibration ID Service $09 of SAE J1979
DTC 1st trip DTCFreeze
Frame data1st trip Freeze
Frame dataSRT code SRT status Test value
CONSULT-II×× × × × ×—
GST×× ×—×××
ECM××*— — —×—
ItemsMIL DTC 1st trip DTC
1st trip 2nd trip
1st trip
displaying2nd trip
displaying1st trip
displaying2nd trip
display-
ing BlinkingLighting
upBlinkingLighting
up
Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0308 is being detected×———— —×—
Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0308 is being detected——×——×——
One trip detection diagnoses
(Refer to EC-757, "
EMISSION-
RELATED DIAGNOSTIC INFOR-
MATION ITEMS" .)—×——×———
Except above — — —×—××—

ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-757
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Revision: 2007 April2007 M35/M45
Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected as
NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by means
of operating fail-safe function.
The fail-safe function also operates when above diagnoses except MIL circuit are detected and demands the
driver to repair the malfunction.
Emission-Related Diagnostic InformationNBS005A3
EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS
×:Applicable —: Not applicable Engine operating condition in fail-safe mode Engine speed will not rise more than 2,500 rpm due to the fuel cut
Items
(CONSULT-II screen terms)DTC*
1
SRT codeTest value/
Test limit
(GST only)Trip MILReference
page CONSULT-II
GST*
2ECM*3
CAN COMM CIRCUIT U1000
1000*4—— 1×EC-865
CAN COMM CIRCUIT U1001
1001*4— — 1 or 2 —EC-865
CONTROL UNIT(CAN) U1010 1010 — — 1×EC-868
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.P0000 0000———
Flashing*8—
INT/V TIM CONT-B1 P0011 0011 — — 2×EC-870
INT/V TIM CONT-B2 P0021 0021 — — 2×EC-870
A/F SEN1 HTR (B1) P0031 0031 —×2×EC-883
A/F SEN1 HTR (B1) P0032 0032 —×2×EC-883
HO2S2 HTR (B1) P0037 0037 —×2×EC-890
HO2S2 HTR (B1) P0038 0038 —×2×EC-890
A/F SEN1 HTR (B2) P0051 0051 —×2×EC-883
A/F SEN1 HTR (B2) P0052 0052 —×2×EC-883
HO2S2 HTR (B2) P0057 0057 —×2×EC-890
HO2S2 HTR (B2) P0058 0058 —×2×EC-890
INT/V TIM V/CIR-B1 P0075 0075 — — 2×EC-899
INT/V TIM V/CIR-B2 P0081 0081 — — 2×EC-899
MAF SEN/CIRCUIT P0101 0101 — — 2×EC-906
MAF SEN/CIRCUIT P0102 0102 — — 1×EC-915
MAF SEN/CIRCUIT P0103 0103 — — 1×EC-915
IAT SEN/CIRCUIT P0112 0112 — — 2×EC-922
IAT SEN/CIRCUIT P0113 0113 — — 2×EC-922
ECT SEN/CIRC P0117 0117 — — 1×EC-926
ECT SEN/CIRC P0118 0118 — — 1×EC-926
TP SEN 2/CIRC P0122 0122 — — 1×EC-932
TP SEN 2/CIRC P0123 0123 — — 1×EC-932
ECT SENSOR P0125 0125 — — 2×EC-939
IAT SENSOR P0127 0127 — — 2×EC-942
THERMSTAT FNCTN P0128 0128 — — 2×EC-945
A/F SENSOR1 (B1) P0130 0130 —×2×EC-947
A/F SENSOR1 (B1) P0131 0131 —×2×EC-957
A/F SENSOR1 (B1) P0132 0132 —×2×EC-966
A/F SENSOR1 (B1) P0133 0133××2×EC-975
HO2S2 (B1) P0137 0137××2×EC-987

EC-758
[VK45DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2007 April2007 M35/M45
HO2S2 (B1) P0138 0138××2×EC-998
HO2S2 (B1) P0139 0139××2×EC-1011
A/F SENSOR1 (B2) P0150 0150 —×2×EC-947
A/F SENSOR1 (B2) P0151 0151 —×2×EC-957
A/F SENSOR1 (B2) P0152 0152 —×2×EC-966
A/F SENSOR1 (B2) P0153 0153××2×EC-975
HO2S2 (B2) P0157 0157××2×EC-987
HO2S2 (B2) P0158 0158××2×EC-998
HO2S2 (B2) P0159 0159××2×EC-1011
FUEL SYS-LEAN-B1 P0171 0171 — — 2×EC-1022
FUEL SYS-RICH-B1 P0172 0172 — — 2×EC-1033
FUEL SYS-LEAN-B2 P0174 0174 — — 2×EC-1022
FUEL SYS-RICH-B2 P0175 0175 — — 2×EC-1033
FTT SENSOR P0181 0181 — — 2×EC-1043
FTT SEN/CIRCUIT P0182 0182 — — 2×EC-1049
FTT SEN/CIRCUIT P0183 0183 — — 2×EC-1049
TP SEN 1/CIRC P0222 0222 — — 1×EC-1054
TP SEN 1/CIRC P0223 0223 — — 1×EC-1054
MULTI CYL MISFIRE P0300 0300 — — 2×EC-1061
CYL 1 MISFIRE P0301 0301 — — 2×EC-1061
CYL 2 MISFIRE P0302 0302 — — 2×EC-1061
CYL 3 MISFIRE P0303 0303 — — 2×EC-1061
CYL 4 MISFIRE P0304 0304 — — 2×EC-1061
CYL 5 MISFIRE P0305 0305 — — 2×EC-1061
CYL 6 MISFIRE P0306 0306 — — 2×EC-1061
CYL 7 MISFIRE P0307 0307 — — 2×EC-1061
CYL 8 MISFIRE P0308 0308 — — 2×EC-1061
KNOCK SEN/CIRC-B1 P0327 0327 — — 2 —EC-1070
KNOCK SEN/CIRC-B1 P0328 0328 — — 2 —EC-1070
KNOCK SEN/CIRC-B2 P0332 0332 — — 2 —EC-1070
KNOCK SEN/CIRC-B2 P0333 0333 — — 2 —EC-1070
CKP SEN/CIRCUIT P0335 0335 — — 2×EC-1075
CMP SEN/CIRC-B1 P0340 0340 — — 2×EC-1082
TW CATALYST SYS-B1 P0420 0420××2×EC-1089
TW CATALYST SYS-B2 P0430 0430××2×EC-1089
EVAP PURG FLOW/MON P0441 0441××2×EC-1095
EVAP SMALL LEAK P0442 0442××2×EC-1100
PURG VOLUME CONT/V P0443 0443 — — 2×EC-1108
PURG VOLUME CONT/V P0444 0444 — — 2×E C - 111 6
PURG VOLUME CONT/V P0445 0445 — — 2×E C - 111 6
VENT CONTROL VALVE P0447 0447 — — 2×EC-1123
VENT CONTROL VALVE P0448 0448 — — 2×EC-1130
Items
(CONSULT-II screen terms)DTC*
1
SRT codeTest value/
Te s t l i m i t
(GST only)Trip MILReference
page CONSULT-II
GST*
2ECM*3

ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-759
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Revision: 2007 April2007 M35/M45EVAP SYS PRES SEN P0451 0451 — — 2×EC-1136
EVAP SYS PRES SEN P0452 0452 — — 2×EC-1139
EVAP SYS PRES SEN P0453 0453 — — 2×EC-1145
EVAP GROSS LEAK P0455 0455 — — 2×EC-1153
EVAP VERY SML LEAK P0456 0456
×*7×2×EC-1160
FUEL LEV SEN SLOSH P0460 0460 — — 2×EC-1169
FUEL LEVEL SENSOR P0461 0461 — — 2×EC-1171
FUEL LEVL SEN/CIRC P0462 0462 — — 2×EC-1173
FUEL LEVL SEN/CIRC P0463 0463 — — 2×EC-1173
VEH SPEED SEN/CIRC*5P0500 0500 — — 2×EC-1175
ISC SYSTEM P0506 0506 — — 2×EC-1177
ISC SYSTEM P0507 0507 — — 2×EC-1179
PW ST P SEN/CIRC P0550 0550 — — 2 —EC-1181
ECM BACK UP/CIRCUIT P0603 0603 — — 2×EC-1186
ECM P0605 0605 — — 1 or 2× or —EC-1190
SENSOR POWER/CIRC P0643 0643 — — 1×EC-1193
TCM P0700 0700 — — 1×AT- 11 2
PNP SW/CIRC P0705 0705 — — 2×AT- 11 3
ATF TEMP SEN/CIRC P0710 0710 — — 2×AT-135
TURBINE SENSOR P0717 0717 — — 2×AT- 11 7
VEH SPD SEN/CIR AT*5P0720 0720 — — 2×AT- 11 9
TCC SOLENOID/CIRC P0740 0740 — — 2×AT-126
A/T TCC S/V FNCTN P0744 0744 — — 2×AT-128
L/PRESS SOL/CIRC P0745 0745 — — 2×AT-130
P-N POS SW/CIRCUIT P0850 0850 — — 2×EC-1198
INTK TIM S/CIRC-B1 P1140 1140 — — 2×EC-1203
INTK TIM S/CIRC-B2 P1145 1145 — — 2×EC-1203
CLOSED LOOP-B1 P1148 1148 — — 1×EC-1211
CLOSED LOOP-B2 P1168 1168 — — 1×EC-1211
TCS C/U FUNCTN P1211 1211 — — 2 —EC-1212
TCS/CIRC P1212 1212 — — 2 —EC-1213
ENG OVER TEMP P1217 1217 — — 1×EC-1214
FPCM/CIRCUIT P1220 1220 — — 2×EC-1225
CTP LEARNING P1225 1225 — — 2 —EC-1233
CTP LEARNING P1226 1226 — — 2 —EC-1235
BAT CURRENT SENSOR P1550 1550 — — 2 —EC-1237
BAT CURRENT SENSOR P1551 1551 — — 2 —EC-1244
BAT CURRENT SENSOR P1552 1552 — — 2 —EC-1244
BAT CURRENT SENSOR P1553 1553 — — 2 —EC-1251
BAT CURRENT SENSOR P1554 1554 — — 2 —EC-1258
Items
(CONSULT-II screen terms)DTC*
1
SRT codeTest value/
Test limit
(GST only)Trip MILReference
page CONSULT-II
GST*
2ECM*3

EC-760
[VK45DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2007 April2007 M35/M45
ASCD SW P1564 1564 — — 1 —EC-1265

(Models
with ICC)
EC-1272

(Models
with ASCD)
ICC COMMAND VALUE*
6P1568 1568 — — 1 —EC-1279
ASCD BRAKE SW P1572 1572 — — 1 —EC-1280

(Models
with ICC)
EC-1289

(Models
with ASCD)
ASCD VHL SPD SEN P1574 1574 — — 1 —EC-1297

(Models
with ICC)
EC-1299

(Models
with ASCD)
NATS MALFUNCTION P1610 - P1615 1610 - 1615 — — 2 —EC-755
IN PULY SPEED P1715 1715 — — 2 —EC-1301
A/T INTERLOCK P1730 1730 — — 1×AT- 1 4 2
I/C SOLENOID/CIRC P1752 1752 — — 1×AT- 1 4 7
I/C SOLENOID FNCTN P1754 1754 — — 1×AT- 1 4 9
FR/B SOLENOID/CIRC P1757 1757 — — 1×AT- 1 5 1
FR/B SOLENOID FNCT P1759 1759 — — 1×AT- 1 5 3
D/C SOLENOID/CIRC P1762 1762 — — 1×AT- 1 5 5
D/C SOLENOID FNCTN P1764 1764 — — 1×AT- 1 5 7
HLR/C SOL/CIRC P1767 1767 — — 1×AT- 1 5 9
HLR/C SOL FNCTN P1769 1769 — — 1×AT- 1 6 1
LC/B SOLENOID/CIRC P1772 1772 — — 1×AT- 1 6 3
LC/B SOLENOID FNCT P1774 1774 — — 1×AT- 1 6 5
VIAS S/V CIRC P1800 1800 — — 2 —EC-1302
BRAKE SW/CIRCUIT P1805 1805 — — 2 —EC-1307
ETC MOT PWR P2100 2100 — — 1×EC-1316
ETC FUNCTION/CIRC P2101 2101 — — 1×EC-1322
ETC MOT PWR P2103 2103 — — 1×EC-1316
ETC MOT P2118 2118 — — 1×EC-1329
ETC ACTR P2119 2119 — — 1×EC-1334
APP SEN 1/CIRC P2122 2122 — — 1×EC-1336
APP SEN 1/CIRC P2123 2123 — — 1×EC-1336
APP SEN 2/CIRC P2127 2127 — — 1×EC-1343
APP SEN 2/CIRC P2128 2128 — — 1×EC-1343
TP SENSOR P2135 2135 — — 1×EC-1350
APP SENSOR P2138 2138 — — 1×EC-1357
A/F SENSOR1 (B1) P2A00 2A00 —×2×EC-1365
A/F SENSOR1 (B2) P2A03 2A03 —×2×EC-1365
Items
(CONSULT-II screen terms)DTC*
1
SRT codeTest value/
Te s t l i m i t
(GST only)Trip MILReference
page CONSULT-II
GST*
2ECM*3

ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-761
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*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012.
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
*4: The troubleshooting for this DTC needs CONSULT-II.
*5: When the fail-safe operations for both self-diagnoses occur, the MIL illuminates.
*6: Models with ICC.
*7: SRT code will not be set if the self-diagnostic result is NG.
*8: When the ECM is in the mode of displaying SRT status, MIL may flash. For the details, refer to EC-765, "
How to Display SRT Status"
.
DTC AND 1ST TRIP DTC
The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic
result obtained. If the ECM memory was cleared previously, and the 1st trip DTC did not reoccur, the 1st trip
DTC will not be displayed.
If a malfunction is detected during the 1st trip, the 1st trip DTC is stored in the ECM memory. The MIL will not
light up (two trip detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required
driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the
2nd trip, both the 1st trip DTC and DTC are stored in the ECM memory and the MIL lights up. In other words,
the DTC is stored in the ECM memory and the MIL lights up when the same malfunction occurs in two consec-
utive trips. If a 1st trip DTC is stored and a non-diagnostic operation is performed between the 1st and 2nd
trips, only the 1st trip DTC will continue to be stored. For malfunctions that blink or light up the MIL during the
1st trip, the DTC and 1st trip DTC are stored in the ECM memory.
Procedures for clearing the DTC and the 1st trip DTC from the ECM memory are described in EC-770, "
HOW
TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" .
For malfunctions in which 1st trip DTCs are displayed, refer to EC-757, "
EMISSION-RELATED DIAGNOSTIC
INFORMATION ITEMS" . These items are required by legal regulations to continuously monitor the system/
component. In addition, the items monitored non-continuously are also displayed on CONSULT-II.
1st trip DTC is specified in Service $07 of SAE J1979. 1st trip DTC detection occurs without lighting up the MIL
and therefore does not warn the driver of a malfunction. However, 1st trip DTC detection will not prevent the
vehicle from being tested, for example during Inspection/Maintenance (I/M) tests.
When a 1st trip DTC is detected, check, print out or write down and erase (1st trip) DTC and Freeze Frame
data as specified in Work Flow procedure Step 2, refer to EC-793, "
WORK FLOW" . Then perform DTC Con-
firmation Procedure or Overall Function Check to try to duplicate the malfunction. If the malfunction is dupli-
cated, the item requires repair.
How to Read DTC and 1st Trip DTC
DTC and 1st trip DTC can be read by the following methods.
With CONSULT-II
With GST
CONSULT-II or GST (Generic Scan Tool) Examples: P0340, P0850, P1148, etc.
These DTCs are prescribed by SAE J2012.
(CONSULT-II also displays the malfunctioning component or system.)
No Tools
The number of blinks of the MIL in the Diagnostic Test Mode II (Self-Diagnostic Results) indicates the DTC.
Example: 0340, 0850, 1148, etc.
These DTCs are controlled by NISSAN.

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

Output of a DTC indicates a malfunction. However, GST or the Diagnostic Test Mode II do not indi-
cate whether the malfunction is still occurring or has occurred in the past and has returned to nor-
mal. CONSULT-II can identify malfunction status as shown below. Therefore, using CONSULT-II (if
available) is recommended.
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].

EC-762
[VK45DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2007 April2007 M35/M45
If a 1st trip DTC is stored in the ECM, the time data will be [1t].
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, absolute throttle position, 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-829, "
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 EC-770, "
HOW TO ERASE EMIS-
SION-RELATED DIAGNOSTIC INFORMATION" .
SYSTEM READINESS TEST (SRT) CODE
System Readiness Test (SRT) code is specified in Service $01 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.
PBIB0911E
Priority Items
1Freeze frame data Misfire — DTC: P0300 - P0308
Fuel Injection System Function — DTC: P0171, P0172, P0174, P0175
2 Except the above items (Includes A/T related items)
3 1st trip freeze frame data

EC-764
[VK45DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2007 April2007 M35/M45
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
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.