Infiniti M35/M45 Y50. Manual — part 396
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-57
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
EVAP SYS PRES SEN
P0452
0452
—
—
2
×
EVAP SYS PRES SEN
P0453
0453
—
—
2
×
EVAP GROSS LEAK
P0455
0455
—
—
2
×
EVAP VERY SML LEAK
P0456
0456
×
*
7
×
2
×
FUEL LEV SEN SLOSH
P0460
0460
—
—
2
×
FUEL LEVEL SENSOR
P0461
0461
—
—
2
×
FUEL LEVL SEN/CIRC
P0462
0462
—
—
2
×
FUEL LEVL SEN/CIRC
P0463
0463
—
—
2
×
VEH SPEED SEN/CIRC*
5
P0500
0500
—
—
2
×
ISC SYSTEM
P0506
0506
—
—
2
×
ISC SYSTEM
P0507
0507
—
—
2
×
PW ST P SEN/CIRC
P0550
0550
—
—
2
—
ECM BACK UP/CIRCUIT
P0603
0603
—
—
2
×
ECM
P0605
0605
—
—
1 or 2
×
or
—
SENSOR POWER/CIRC
P0643
0643
—
—
1
×
TCM
P0700
0700
—
—
1
×
PNP SW/CIRC
P0705
0705
—
—
2
×
ATF TEMP SEN/CIRC
P0710
0710
—
—
2
×
TURBINE SENSOR
P0717
0717
—
—
2
×
VEH SPD SEN/CIR AT*
5
P0720
0720
—
—
2
×
ENGINE SPEED SIG
P0725
0725
—
—
2
—
TCC SOLENOID/CIRC
P0740
0740
—
—
2
×
A/T TCC S/V FNCTN
P0744
0744
—
—
2
×
L/PRESS SOL/CIRC
P0745
0745
—
—
2
×
P-N POS SW/CIRCUIT
P0850
0850
—
—
2
×
CLOSED LOOP-B1
P1148
1148
—
—
1
×
CLOSED LOOP-B2
P1168
1168
—
—
1
×
TCS C/U FUNCTN
P1211
1211
—
—
2
—
TCS/CIRC
P1212
1212
—
—
2
—
ENG OVER TEMP
P1217
1217
—
—
1
×
FPCM/CIRCUIT
P1220
1220
—
—
2
×
CTP LEARNING
P1225
1225
—
—
2
—
CTP LEARNING
P1226
1226
—
—
2
—
COLD START CONTROL
P1421
1421
—
—
2
×
BAT CURRENT SENSOR
P1550
1550
—
—
2
—
BAT CURRENT SENSOR
P1551
1551
—
—
2
—
BAT CURRENT SENSOR
P1552
1552
—
—
2
—
BAT CURRENT SENSOR
P1553
1553
—
—
2
—
BAT CURRENT SENSOR
P1554
1554
—
—
2
—
Items
(CONSULT-II screen terms)
DTC*
1
SRT code
Test value/
Test limit
(GST only)
Trip
MIL
Reference page
CONSULT-II
GST*
2
ECM*
3
EC-58
[VQ35DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
*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.
ASCD SW
P1564
1564
—
—
1
—
(Models
with ICC)
(Models
with ASCD)
ICC COMMAND VALUE*
6
P1568
1568
—
—
1
—
ASCD BRAKE SW
P1572
1572
—
—
1
—
(Models
with ICC)
(Models
with ASCD)
ASCD VHL SPD SEN
P1574
1574
—
—
1
—
(Models
with ICC)
(Models
with ASCD)
NATS MALFUNCTION
P1610 -
P1615
1610 - 1615
—
—
2
—
TP SEN/CIRC A/T
P1705
1705
—
—
2
—
IN PULY SPEED
P1715
1715
—
—
2
—
A/T INTERLOCK
P1730
1730
—
—
1
×
I/C SOLENOID/CIRC
P1752
1752
—
—
1
×
I/C SOLENOID FNCTN
P1754
1754
—
—
1
×
FR/B SOLENOID/CIRC
P1757
1757
—
—
1
×
FR/B SOLENOID FNCT
P1759
1759
—
—
1
×
D/C SOLENOID/CIRC
P1762
1762
—
—
1
×
D/C SOLENOID FNCTN
P1764
1764
—
—
1
×
HLR/C SOL/CIRC
P1767
1767
—
—
1
×
HLR/C SOL FNCTN
P1769
1769
—
—
1
×
LC/B SOLENOID/CIRC
P1772
1772
—
—
1
×
LC/B SOLENOID FNCT
P1774
1774
—
—
1
×
BRAKE SW/CIRCUIT
P1805
1805
—
—
2
—
ETC MOT PWR
P2100
2100
—
—
1
×
ETC FUNCTION/CIRC
P2101
2101
—
—
1
×
ETC MOT PWR
P2103
2103
—
—
1
×
ETC MOT
P2118
2118
—
—
1
×
ETC ACTR
P2119
2119
—
—
1
×
APP SEN 1/CIRC
P2122
2122
—
—
1
×
APP SEN 1/CIRC
P2123
2123
—
—
1
×
APP SEN 2/CIRC
P2127
2127
—
—
1
×
APP SEN 2/CIRC
P2128
2128
—
—
1
×
TP SENSOR
P2135
2135
—
—
1
×
APP SENSOR
P2138
2138
—
—
1
×
A/F SENSOR1 (B1)
P2A00
2A00
—
×
2
×
A/F SENSOR1 (B2)
P2A03
2A03
—
×
2
×
Items
(CONSULT-II screen terms)
DTC*
1
SRT code
Test value/
Test limit
(GST only)
Trip
MIL
Reference page
CONSULT-II
GST*
2
ECM*
3
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-59
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
*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-63, "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
TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION"
For malfunctions in which 1st trip DTCs are displayed, refer to
EC-55, "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 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
. 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, 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-60
[VQ35DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
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-126, "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 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
1
Freeze frame data
Misfire — DTC: P0300 - P0306
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
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