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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WITH GST
Selecting Service $01 with GST (Generic Scan Tool)
NO TOOLS
A SRT code itself can not be displayed while only SRT status can be.
1. Turn ignition switch ON and wait 20 seconds.
2. SRT status is indicated as shown below.
–When all SRT codes are set, MIL lights up continuously.
–When any SRT codes are not set, MIL will flash periodically for 10 seconds.
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-III
Perform corresponding DTC Confirmation Procedure one by one based on Performance Priority in the table
on EC-53, "
SRT Item" .
WITHOUT CONSULT-III
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.
PBIB2317E
EC-62
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2006 November2007 350Z
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 Service $04 with GST.
NOTE:
If the DTC is not for A/T related items (see EC-8, "
INDEX FOR DTC" ), skip step 2.
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. Perform AT- 3 8 , "
HOW TO ERASE DTC (WITH GST)" . (The DTC in the TCM will be erased.)
3. Select Service $04 with GST (Generic Scan Tool).
NO TOOLS
NOTE:
If the DTC is not for A/T related items (see EC-8, "
INDEX FOR DTC" ), skip step 2.
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. Perform AT- 3 8 , "
HOW TO ERASE DTC (NO TOOLS)" . (The DTC in the TCM will be erased.)
3. Change the diagnostic test mode from Mode II to Mode I by depressing the accelerator pedal.
Refer to EC-63, "
HOW TO SWITCH DIAGNOSTIC TEST MODE" .
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
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.
Malfunction Indicator Lamp (MIL)NBS00032
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 DI-56, "
WARNING LAMPS" ,
or see EC-716, "
MIL AND DATA LINK CONNECTOR" .
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.
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ON BOARD DIAGNOSTIC (OBD) SYSTEM
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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.
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.
MIL Flashing Without DTC
When any SRT codes are not set, MIL may flash without DTC. For the details, refer to EC-56, "How to Display
SRT Status" .
HOW TO SWITCH DIAGNOSTIC TEST MODE
NOTE:
It is better to count the time accurately with a clock.
It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit
has a malfunction.
Always ECM returns to Diagnostic Test Mode I after ignition switch is turned OFF.
How to Set Diagnostic Test Mode II (Self-diagnostic Results)
1. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
2. Repeat the following procedure quickly 5 times within 5 seconds.
a. Fully depress the accelerator pedal.
b. Fully release the accelerator pedal.
3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the MIL starts
blinking.
Diagnostic Test
ModeKEY and ENG.
StatusFunction Explanation of Function
Mode I Ignition switch in
ON position
Engine stoppedBULB 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
WARNINGThis is a usual driving condition. When a malfunction is
detected twice in two consecutive driving cycles (two trip
detection 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 stoppedSELF-DIAGNOSTIC
RESULTSThis function allows DTCs and 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
ON BOARD DIAGNOSTIC (OBD) SYSTEM
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RELATIONSHIP BETWEEN MIL, DTC, 1ST TRIP DTC AND DRIVING PATTERNS FOR “MISFIRE
”
*1: When the same malfunction is
detected in two consecutive trips,
MIL will light up.*2: MIL will go off after vehicle is driven
3 times (pattern B) without any mal-
functions.*3: When the same malfunction is
detected in two consecutive trips, the
DTC and the freeze frame data will
be stored in ECM.
*4: The DTC and the freeze frame data
will not be displayed any longer after
vehicle is driven 80 times (pattern C)
without the same malfunction. (The
DTC and the freeze frame data still
remain in ECM.)*5: When a malfunction is detected for
the 1st time, the 1st trip DTC and the
1st trip freeze frame data will be
stored in ECM.*6: The 1st trip DTC and the 1st trip
freeze frame data will be cleared at
the moment OK is detected.
*7: When the same malfunction is
detected in the 2nd trip, the 1st trip
freeze frame data will be cleared.*8: 1st trip DTC will be cleared when
vehicle is driven once (pattern C)
without the same malfunction after
DTC is stored in ECM.
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ON BOARD DIAGNOSTIC (OBD) SYSTEM
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RELATIONSHIP BETWEEN MIL, DTC, 1ST TRIP DTC AND DRIVING PATTERNS EXCEPT FOR
“MISFIRE
*1: When the same malfunction is
detected in two consecutive trips,
MIL will light up.*2: MIL will go off after vehicle is driven
3 times (pattern B) without any mal-
functions.*3: When the same malfunction is
detected in two consecutive trips, the
DTC and the freeze frame data will
be stored in ECM.
*4: The DTC and the freeze frame data
will not be displayed any longer after
vehicle is driven 40 times (pattern A)
without the same malfunction.
(The DTC and the freeze frame data
still remain in ECM.)*5: When a malfunction is detected for
the 1st time, the 1st trip DTC and the
1st trip freeze frame data will be
stored in ECM.*6: 1st trip DTC will be cleared after
vehicle is driven once (pattern B)
without the same malfunction.
*7: When the same malfunction is
detected in the 2nd trip, the 1st trip
freeze frame data will be cleared.
SEF393SD