2007 INFINITI FX35 page 80

ON BOARD DIAGNOSTIC (OBD) SYSTEM EC-57
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EC
Revision: 2006 July 2007 FX35/FX45
*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 trouble shooting for this DTC needs CONSULT-II.
*6: When the fail-safe operations for both self-diagnoses occur, the MIL illuminates.
*7: For models with ICC system.
*8: When the ECM is in the mode of displaying SRT status, MIL may flash. For the details, refer to EC-62, "
How to Display SRT Status" .
ASCD BRAKE SW P1572 1572 — — 1 —
EC-530

(Models
with ICC) EC-539

(Models
with ASCD)
ASCD VHL SPD SEN P1574 1574 — — 1 — EC-547

(Models
with ICC) EC-549

(Models
with ASCD)
NATS MALFUNCTION P1610 -
P1615 1610 - 1615 — — 2 —
EC-52
IN PULLY SPEED P1715 1715 — — 2 — EC-551
A/T INTERLOCK P1730 1730 — — 1×AT- 1 4 1
I/C SOLENOID/CIRC P1752 1752 — — 1 ×AT- 1 4 6
I/C SOLENOID FNCTN P1754 1754 — — 1 ×AT- 1 4 8
FR/B SOLENOID/CIRC P1757 1757 — — 1 ×AT- 1 5 0
FR/B SOLENOID FNCT P1759 1759 — — 1 ×AT- 1 5 2
D/C SOLENOID/CIRC P1762 1762 — — 1 ×AT- 1 5 4
D/C SOLENOID FNCTN P1764 1764 — — 1 ×AT- 1 5 6
HLR/C SOL/CIRC P1767 1767 — — 1 ×AT- 1 5 8
HLR/C SOL FNCTN P1769 1769 — — 1 ×AT- 1 6 0
LC/B SOLENOID/CIRC P1772 1772 — — 1 ×AT- 1 6 2
LC/B SOLENOID FNCT P1774 1774 — — 1 ×AT- 1 6 4
BRAKE SW/CIRCUIT P1805 1805 — — 2 — EC-552
ETC MOT PWR P2100 2100 — — 1×EC-557
ETC FUNCTION/CIRC P2101 2101 — — 1 ×EC-563
ETC MOT PWR P2103 2103 — — 1 ×EC-557
ETC MOT P2118 2118 — — 1 ×EC-569
ETC ACTR P2119 2119 — — 1 ×EC-574
APP SEN 1/CIRC P2122 2122 — — 1 ×EC-576
APP SEN 1/CIRC P2123 2123 — — 1 ×EC-576
APP SEN 2/CIRC P2127 2127 — — 1 ×EC-583
APP SEN 2/CIRC P2128 2128 — — 1 ×EC-583
TP SENSOR P2135 2135 — — 1 ×EC-590
APP SENSOR P2138 2138 — — 1 ×EC-597
A/F SENSOR1 (B1) P2A00 2A00 — ×2 ×EC-605
A/F SENSOR1 (B2) P2A03 2A03 — ×2 ×EC-605
Items
(CONSULT-II screen terms) DTC*
1
SRT code
Test value/
Te s t l i m i t
(GST only) Trip MIL
Reference
page
CONSULT-II
GST*
2ECM*3

ON BOARD DIAGNOSTIC (OBD) SYSTEM EC-61
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EC
Revision: 2006 July 2007 FX35/FX45

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.
*1 EC-58*2EC-62*3 EC-62
PBIB2320E

EC-62
[VQ35DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2006 July 2007 FX35/FX45
How to Display SRT Status
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 in the fig-
ure.
“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-II screen, “HO2S HTR” is not
SRT item.
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-II
Perform corresponding DTC Confirmation Procedure one by one based on Performance Priority in the table
on EC-59, "
SRT Item" .
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.
SEF949Z
PBIB2317E

TROUBLE DIAGNOSIS EC-91
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EC
Revision: 2006 July 2007 FX35/FX45
10. DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE
Inspect according to Diagnostic Procedure of the system.
NOTE:
The Diagnostic Procedure in EC section described based on open circuit inspection. A short circuit inspection
is also required for the circuit check in the Diagnostic Procedure. For details, refer to Circuit Inspection in GI-
28, "How to Perform Efficient Diagnosis for an Electrical Incident" .
Is malfunctioning part detected?
Ye s > > G O T O 11 .
No >> Monitor input data from related sensors or check voltage of related ECM terminals using CON- SULT-II. Refer to EC-132, "
CONSULT-II Reference Value in Data Monitor" , EC-109, "ECM Termi-
nals and Reference Value" .
11 . REPAIR OR REPLACE THE MALFUNCTIONING PART
1. Repair or replace the malfunctioning part.
2. Reconnect parts or connectors disconnected during Diagnostic Procedure again after repair and replace- ment.
3. Check DTC. If DTC is displayed, erase it, refer to EC-66, "
HOW TO ERASE EMISSION-RELATED DIAG-
NOSTIC INFORMATION" .
>> GO TO 12.
12. FINAL CHECK
When DTC was detected in step 2, perform DTC Confirmation Procedure or Overall Function Check again,
and then make sure that the malfunction have been repaired securely.
When symptom was described from the customer, refer to confirmed symptom in step 3 or 4, and make sure
that the symptom is not detected.
OK or NG
NG (DTC*1 is detected)>>GO TO 10.
NG (Symptom remains)>>GO TO 6.
OK >> 1. Before returning the vehicle to the customer, make sure to erase unnecessary DTC*
1 in ECM
and TCM (Transmission Control Module). (Refer to EC-66, "
HOW TO ERASE EMISSION-
RELATED DIAGNOSTIC INFORMATION" and AT- 4 1 , "HOW TO ERASE DTC" .)
2. If the completion of SRT is needed, drive vehicle under the specific driving pattern. Refer to EC-
63, "Driving Pattern" .
3. INSPECTION END
*1: Include 1st trip DTC.
*2: Include 1st trip freeze frame data.
DIAGNOSTIC WORKSHEET
Description
There are many operating conditions that lead to the malfunction of
engine components. A good grasp of such conditions can make trou-
bleshooting faster and more accurate.
In general, each customer feels differently about a incident. It is
important to fully understand the symptoms or conditions for a cus-
tomer complaint.
Utilize a diagnostic worksheet like the one on the next page in order
to organize all the information for troubleshooting.
Some conditions may cause the MIL to come on steady or blink and
DTC to be detected. Examples:

Vehicle ran out of fuel, which caused the engine to misfire.

Fuel filler cap was left off or incorrectly screwed on, allowing fuel
to evaporate into the atmosphere.
SEF907L

EC-96
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
Symptom Matrix ChartNBS003M0
SYSTEM — BASIC ENGINE CONTROL SYSTEM
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel pump circuit 11232 22 3 2 EC-636
Fuel pressure regulator system334444444 4 EC-85
Fuel injector circuit 11232 22 2 EC-629
Evaporative emission system 334444444 4EC-38
Air Positive crankcase ventilation sys-
tem 33 4444444 41
EC-50
Incorrect idle speed adjustment 1 1 1 1 1 EC-76
Electric throttle control actuator 112332222 2 2 EC-563,
EC-574
IgnitionIncorrect ignition timing adjustment33111 11 1 EC-76
Ignition circuit 11222 22 2EC-650
Power supply and ground circuit22333 33 23 EC-148
Mass air flow sensor circuit
1
12 2
222 2 EC-187,
EC-196
Engine coolant temperature sensor circuit
3 33
EC-209,
EC-221
Air fuel ratio (A/F) sensor EC-239
EC-239
EC-248
EC-257
EC-605
Throttle position sensor circuit
22 EC-214
,
EC-338
,
EC-509
,
EC-511
,
EC-590
Accelerator pedal position sensor circuit 3 2 1 EC-483
,
EC-576
,
EC-583
,
EC-597
Knock sensor circuit 2 3 EC-355
Crankshaft position sensor (POS) circuit 2 2EC-360
Camshaft position sensor (PHASE) circuit 3 2EC-367
Vehicle speed signal circuit 2 3 3 3EC-465
Power steering pressure sensor circuit 2 3 3EC-471

TROUBLE DIAGNOSIS EC-97
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EC
Revision: 2006 July 2007 FX35/FX45
1 - 6: The numbers refer to the order of inspection.
(continued on next page) ECM 22333333333
EC-476
,
EC-480
Intake valve timing control solenoid valve cir-
cuit 32 13223 3
EC-180
Park/neutral position (PNP) switch circuit 3 3 3 3 3 EC-488
Refrigerant pressure sensor circuit 2 3 3 4EC-663
Electrical load signal circuit 3EC-627
Air conditioner circuit223333333 3 2 AT C - 4 0
ABS actuator and electric unit (control unit) 4 BRC-11
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA

EC-98
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
SYSTEM — ENGINE MECHANICAL & OTHER
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel tank 5
5 FL-10
Fuel piping 5 5 5 5 5 5
EM-45
Vapor lock —
Valve deposit 5 555 55 5 —
Poor fuel (Heavy weight gaso-
line, Low octane) —
Air Air duct
55555 5 EM-17
Air cleaner
EM-17
Air leakage from air duct
(Mass air flow sensor — electric
throttle control actuator) 5555 EM-17
Electric throttle control actuator
EM-19
Air leakage from intake manifold/
Collector/Gasket EM-19,
EM-24
Cranking Battery 111111
1 1
SC-5
Generator circuit
SC-24
Starter circuit 3SC-11
Signal plate 6EM-123
Park/neutral position (PNP)
switch 4
AT- 11 2
Engine Cylinder head
55555 55 5 EM-101
Cylinder head gasket 4 3
Cylinder block
66666 66 6 4
EM-123
Piston
Piston ring
Connecting rod
Bearing
Crankshaft

TROUBLE DIAGNOSIS EC-99
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EC
Revision: 2006 July 2007 FX35/FX45
1 - 6: The numbers refer to the order of inspection. Va l v e
mecha-
nism Timing chain
55555 55 5 EM-64
Camshaft
EM-83
Intake valve timing controlEM-64
Intake valve
3 EM-101
Exhaust valve
Exhaust Exhaust manifold/Tube/Muffler/ Gasket 55555 55 5 EM-26
,
EX-
3Three way catalyst
Lubrica-
tion Oil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery/Oil cooler 55555 55 5 EM-30
,
LU-
17 , LU-10 ,
LU-14
Oil level (Low)/Filthy oil LU-7
Cooling
Radiator/Hose/Radiator filler cap
55555 55 45 CO-14,
CO-17
Thermostat 5 CO-27
Water pumpCO-22
Water galleryCO-29
Cooling fan 5EC-227
Coolant level (Low)/Contami-
nated coolant 5
CO-11
IVIS (Infiniti Vehicle Immobilizer System —
NATS) 11
EC-52 or
BL-205
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA