2007 NISSAN 350Z Engine Control Workshop Manual

ON BOARD DIAGNOSTIC (OBD) SYSTEM
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Revision: 2006 November2007 350ZECT SENSOR P0125 0125 — — 2×EC-239
IAT SENSOR-B1 P0127 0127 — — 2×EC-243
THERMSTAT FNCTN P0128 0128 — — 2×EC-246
A/F SENSOR1 (B1) P0130 0130 —×2×EC-248
A/F SENSOR1 (B1) P0131 0131 —×2×EC-257
A/F SENSOR1 (B1) P0132 0132 —×2×EC-266
A/F SENSOR1 (B1) P0133 0133××2×EC-275
HO2S2 (B1) P0137 0137××2×EC-287
HO2S2 (B1) P0138 0138××2×EC-298
HO2S2 (B1) P0139 0139××2×EC-313
A/F SENSOR1 (B2) P0150 0150 —×2×EC-248
A/F SENSOR1 (B2) P0151 0151 —×2×EC-257
A/F SENSOR1 (B2) P0152 0152 —×2×EC-266
A/F SENSOR1 (B2) P0153 0153××2×EC-275
HO2S2 (B2) P0157 0157××2×EC-287
HO2S2 (B2) P0158 0158××2×EC-298
HO2S2 (B2) P0159 0159××2×EC-313
FUEL SYS-LEAN-B1 P0171 0171 — — 2×EC-324
FUEL SYS-RICH-B1 P0172 0172 — — 2×EC-334
FUEL SYS-LEAN-B2 P0174 0174 — — 2×EC-324
FUEL SYS-RICH-B2 P0175 0175 — — 2×EC-334
FTT SENSOR P0181 0181 — — 2×EC-344
FTT SEN/CIRCUIT P0182 0182 — — 2×EC-348
FTT SEN/CIRCUIT P0183 0183 — — 2×EC-348
EOT SENSOR P0196 0196 — — 2×EC-352
EOT SEN/CIRCUIT P0197 0197 — — 2×EC-239
EOT SEN/CIRCUIT P0198 0198 — — 2×EC-239
TP SEN 1/CIRC-B1 P0222 0222 — — 1×EC-361
TP SEN 1/CIRC-B1 P0223 0223 — — 1×EC-361
TP SEN 2/CIRC-B2 P0227 0227 — — 1×EC-229
TP SEN 2/CIRC-B2 P0228 0228 — — 1×EC-229
MULTI CYL MISFIRE P0300 0300 — — 2×EC-371
CYL 1 MISFIRE P0301 0301 — — 2×EC-371
CYL 2 MISFIRE P0302 0302 — — 2×EC-371
CYL 3 MISFIRE P0303 0303 — — 2×EC-371
CYL 4 MISFIRE P0304 0304 — — 2×EC-371
CYL 5 MISFIRE P0305 0305 — — 2×EC-371
CYL 6 MISFIRE P0306 0306 — — 2×EC-371
KNOCK SEN/CIRC-B1 P0327 0327 — — 2 —EC-379
KNOCK SEN/CIRC-B1 P0328 0328 — — 2 —EC-379
KNOCK SEN/CIRC-B2 P0332 0332 — — 2 —EC-379
KNOCK SEN/CIRC-B2 P0333 0333 — — 2 —EC-379
Items
(CONSULT-III screen terms)DTC*
1
SRT codeTest value/
Test limit
(GST only)TripMIL lighting
upReference
page CONSULT-III
GST*
2ECM*3

EC-50
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2006 November2007 350Z
CKP SEN/CIRCUIT P0335 0335 — — 2×EC-386
CMP SEN/CIRC-B1 P0340 0340 — — 2×EC-394
CMP SEN/CIRC-B2 P0345 0345 — — 2×EC-394
TW CATALYST SYS-B1 P0420 0420××2×EC-406
TW CATALYST SYS-B2 P0430 0430××2×EC-406
EVAP PURG FLOW/MON P0441 0441××2×EC-411
EVAP SMALL LEAK P0442 0442××2×EC-416
PURG VOLUME CONT/V P0443 0443 — — 2×EC-423
PURG VOLUME CONT/V P0444 0444 — — 2×EC-431
PURG VOLUME CONT/V P0445 0445 — — 2×EC-431
VENT CONTROL VALVE P0447 0447 — — 2×EC-437
VENT CONTROL VALVE P0448 0448 — — 2×EC-444
EVAP SYS PRES SEN P0451 0451 — — 2×EC-450
EVAP SYS PRES SEN P0452 0452 — — 2×EC-456
EVAP SYS PRES SEN P0453 0453 — — 2×EC-465
EVAP GROSS LEAK P0455 0455 — — 2×EC-475
EVAP VERY SML LEAK P0456 0456
×*4×2×EC-482
FUEL LEV SEN SLOSH P0460 0460 — — 2×EC-490
FUEL LEVEL SENSOR P0461 0461 — — 2×EC-492
FUEL LEVL SEN/CIRC P0462 0462 — — 2×EC-494
FUEL LEVL SEN/CIRC P0463 0463 — — 2×EC-494
VEH SPEED SEN/CIRC*6P0500 0500 — — 2×EC-496
ISC SYSTEM P0506 0506 — — 2×EC-498
ISC SYSTEM P0507 0507 — — 2×EC-500
PW ST P SEN/CIRC P0550 0550 — — 2 —EC-502
ECM BACK UP/CIRCUIT P0603 0603 — — 2×EC-508
ECM P0605 0605 — — 1 or 2× or —EC-512
SENSOR POWER/CIRC P0643 0643 — — 1×EC-514
TCM P0700 0700 — — 1×AT- 1 0 1
PNP SW/CIRC P0705 0705 — — 2×AT- 1 0 2
ATF TEMP SEN/CIRC P0710 0710 — — 2×AT- 1 3 4
TURBINE SENSOR P0717 0717 — — 2×AT- 11 3
VEH SPD SEN/CIR AT*6P0720 0720 — — 2×AT- 1 0 8
A/T 1ST GR FNCTN P0731 0731 — — 2×AT- 11 5
A/T 2ND GR FNCTN P0732 0732 — — 2×AT- 11 7
A/T 3RD GR FNCTN P0733 0733 — — 2×AT- 11 9
A/T 4TH GR FNCTN P0734 0734 — — 2×AT- 1 2 1
A/T 5TH GR FNCTN P0735 0735 — — 2×AT- 1 2 3
TCC SOLENOID/CIRC P0740 0740 — — 2×AT- 1 2 5
A/T TCC S/V FNCTN P0744 0744 — — 2×AT- 1 2 7
L/PRESS SOL/CIRC P0745 0745 — — 2×AT- 1 2 9
P-N POS SW/CIRCUIT P0850 0850 — — 2×EC-520
Items
(CONSULT-III screen terms)DTC*
1
SRT codeTest value/
Te s t l i m i t
(GST only)TripMIL lighting
upReference
page CONSULT-III
GST*
2ECM*3

ON BOARD DIAGNOSTIC (OBD) SYSTEM
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Revision: 2006 November2007 350ZEXH TIM SEN/CIR-B1 P1078 1078 — — 2×EC-528
EXH TIM SEN/CIR-B2 P1084 1084 — — 2×EC-528
CLOSED LOOP-B1 P1148 1148 — — 1×EC-540
CLOSED LOOP-B2 P1168 1168 — — 1×EC-540
TCS C/U FUNCTN P1211 1211 — — 2 —EC-541
TCS/CIRC P1212 1212 — — 2 —EC-542
ENG OVER TEMP P1217 1217 — — 1×EC-543
CTP LEARNING-B1 P1225 1225 — — 2 —EC-557
CTP LEARNING-B1 P1226 1226 — — 2 —EC-559
ETC FUNCTION/CIRC-B2 P1233 1233 — — 1×EC-561
CTP LEARNING-B2 P1234 1234 — — 2 —EC-557
CTP LEARNING-B2 P1235 1235 — — 2 —EC-559
ETC MOT-B2 P1236 1236 — — 1×EC-571
ETC ACTR-B2 P1238 1238 — — 1×EC-580
TP SENSOR-B2 P1239 1239 — — 1×EC-582
ETC MOT PWR-B2 P1290 1290 — — 1×EC-592
COLD START CONTROL P1421 1421 — — 2×EC-600
ASCD SW P1564 1564 — — 1 —EC-602
ASCD BRAKE SW P1572 1572 — — 1 —EC-610
ASCD VHL SPD SEN P1574 1574 — — 1 —EC-625
NATS MALFUNCTIONP1610 -
P16151610 - 1615 — — 2 —EC-46
IN PULY SPEED P1715 1715 — — 2 —EC-627
A/T INTERLOCK P1730 1730 — — 1×AT- 1 4 1
I/C SOLENOID/CIRC P1752 1752 — — 1×AT- 1 4 5
FR/B SOLENOID/CIRC P1757 1757 — — 1×AT- 1 4 7
D/C SOLENOID/CIRC P1762 1762 — — 1×AT- 1 4 9
HLR/C SOL/CIRC P1767 1767 — — 1×AT- 1 5 1
LC/B SOLENOID/CIRC P1772 1772 — — 1×AT- 1 5 3
LC/B SOLENOID FNCT P1774 1774 — — 1×AT- 1 5 5
BRAKE SW/CIRCUIT P1805 1805 — — 2 —EC-628
ETC MOT PWR-B1 P2100 2100 — — 1×EC-592
ETC FUNCTION/CIRC-B1 P2101 2101 — — 1×EC-561
ETC MOT PWR P2103 2103 — — 1×EC-592
ETC MOT-B1 P2118 2118 — — 1×EC-571
ETC ACTR-B1 P2119 2119 — — 1×EC-580
APP SEN 1/CIRC P2122 2122 — — 1×EC-633
APP SEN 1/CIRC P2123 2123 — — 1×EC-633
APP SEN 2/CIRC P2127 2127 — — 1×EC-641
APP SEN 2/CIRC P2128 2128 — — 1×EC-641
TP SENSOR2/CIRC-B2 P2132 2132 — — 1×EC-361
TP SENSOR2/CIRC-B2 P2133 2133 — — 1×EC-361
TP SENSOR-B1 P2135 2135 — — 1×EC-582
Items
(CONSULT-III screen terms)DTC*
1
SRT codeTest value/
Test limit
(GST only)TripMIL lighting
upReference
page CONSULT-III
GST*
2ECM*3

EC-52
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2006 November2007 350Z
*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 needs CONSULT-III.
*6: When the fail-safe operations for both self-diagnoses occur, the MIL illuminates.
*7: When the ECM is in the mode of displaying SRT status, MIL may flash. For the details, refer to EC-56, "
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
results 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-61, "
HOW
TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" .
For malfunctions in which 1st trip DTCs are displayed, refer to EC-48, "
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-III.
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-82, "
WORK FLOW" . 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-III
With GST
CONSULT-III or GST (Generic Scan Tool) Examples: P0340, P0850, P1148, etc.
These DTCs are prescribed by SAE J2012.
(CONSULT-III 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-III can identify malfunction status as shown below. Therefore, using CONSULT-III (if
available) is recommended.
A sample of CONSULT-III 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-III. Time data indicates how many
times the vehicle was driven after the last detection of a DTC.
APP SENSOR P2138 2138 — — 1×EC-650
A/F SENSOR1 (B1) P2A00 2A00 —×2×EC-659
A/F SENSOR1 (B2) P2A03 2A03 —×2×EC-659
Items
(CONSULT-III screen terms)DTC*
1
SRT codeTest value/
Te s t l i m i t
(GST only)TripMIL lighting
upReference
page CONSULT-III
GST*
2ECM*3

ON BOARD DIAGNOSTIC (OBD) SYSTEM
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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].
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-III or
GST. The 1st trip freeze frame data can only be displayed on the CONSULT-III screen, not on the GST. For
details, see EC-119, "
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-61, "
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.
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.
SRT Item
The table below shows required self-diagnostic items to set the SRT to “CMPLT”.
Priority Items
1Freeze 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

EC-54
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2006 November2007 350Z
*: If completion of several SRTs is required, perform driving patterns (DTC confirmation procedure), one by one based on the priority 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. 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
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.
SRT item
(CONSULT-III indica-
tion)Perfor-
mance Pri-
ority*Required self-diagnostic items to set the SRT to “CMPLT”Corresponding DTC
No.
CATALYST 2 Three way catalyst function P0420, P0430
EVAP SYSTEM1 EVAP control system P0442
2 EVAP control system P0456
2 EVAP control system purge flow monitoring P0441
HO2S2 Air fuel ratio (A/F) sensor 1 P0133, P0153
Heated oxygen sensor 2 P0139, P0159
Heated oxygen sensor 2 P0137, P0157
Heated oxygen sensor 2 P0138, P0158
Self-diagnosis resultExample
DiagnosisIgnition 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 — NGNG
(Consecutive
NG)
(1st trip)
DTC1st trip DTC — 1st trip DTCDTC
(= MIL “ON”)
SRT of EGR “INCMP” “INCMP” “INCMP” “CMPLT”

ON BOARD DIAGNOSTIC (OBD) SYSTEM
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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”.

EC-56
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2006 November2007 350Z
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.
How to Display SRT Status
WITH CONSULT-III
Selecting “SRT STATUS” in “DTC & SRT CONFIRMATION” mode with CONSULT-III.
For items whose SRT codes are set, a “CMPLT” is displayed on the CONSULT-III screen; for items whose
SRT codes are not set, “INCMP” is displayed.
A sample of CONSULT-III display for SRT code is shown in the figure.
“INCMP” means the self-diagnosis is incomplete and SRT is not set. “CMPLT” means the self-diagnosis is
complete and SRT is set.
NOTE:
Though displayed on the CONSULT-III screen, “HO2S HTR” is not SRT item.
*1EC-52*2EC-56*3EC-57
PBIB2320E