2004 INFINITI FX35 ignition

EC-86
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
10. CHECK IGNITION TIMING
1. Run engine at idle.
2. Check ignition timing with a timing light.
OK or NG
OK >>INSPECTION END
NG >> GO TO 11.
11 . PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Stop engine.
2. Perform EC-49, "
Accelerator Pedal Released Position Learning" .
>> GO TO 12.
12. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform EC-49, "
Throttle Valve Closed Position Learning" .
>> GO TO 13.
13. PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-49, "
Idle Air Volume Learning" .
Is Idle Air Volume Learning carried out successfully?
Ye s o r N o
Yes >> GO TO 14.
No >> 1. Follow the instruction of Idle Air Volume Learning.
2. GO TO 4.
14. CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Read idle speed in “DATA MONITOR” mode with CONSULT-II.
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
OK or NG
OK >> GO TO 15.
NG >> GO TO 17.15 ± 5° BTDC (in P or N position)
PBIB1602E
650 ± 50 rpm (in P or N position)
650 ± 50 rpm (in P or N position)
SEF174Y

TROUBLE DIAGNOSIS
EC-87
[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45
15. CHECK IGNITION TIMING AGAIN
1. Run engine at idle.
2. Check ignition timing with a timing light.
OK or NG
OK >>INSPECTION END
NG >> GO TO 16.
16. CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to EM-63, "
TIMING CHAIN" .
OK or NG
OK >> GO TO 17.
NG >> 1. Repair the timing chain installation.
2. GO TO 4.
17. DETECT MALFUNCTIONING PART
Check the following.

Check camshaft position sensor (PHASE) and circuit. Refer to EC-308 .

Check crankshaft position sensor (POS) and circuit. Refer to EC-302 .
OK or NG
OK >> GO TO 18.
NG >> 1. Repair or replace.
2. GO TO 4.
18. CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)
2. Perform initialization of IVIS (NATS) system and registration of IVIS (NATS) ignition key IDs. Refer to EC-
68, "IVIS (Infiniti Vehicle Immobilizer System — NATS)" .
>> GO TO 4. 15 ± 5° BTDC (in P or N position)
PBIB1602E

EC-88
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
Symptom Matrix ChartABS006KS
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 2EC-603
Fuel pressure regulator system334444444 4EC-51
Injector circuit 11232 22 2EC-597
Evaporative emission system 334444444 4EC-643
Air Positive crankcase ventilation sys-
tem
334444444 41EC-655
Incorrect idle speed adjustment 1 1 1 1 1EC-38
Electric throttle control actuator 112332222 2 2EC-415,
EC-417
IgnitionIncorrect ignition timing adjustment33111 11 1EC-38
Ignition circuit 11222 22 2EC-585
Power supply and ground circuit22333 33 23EC-136
Mass air flow sensor circuit
1
122
222 2EC-165,
EC-173
Engine coolant temperature sensor circuit
333EC-185,
EC-197
Heated oxygen sensor 1 circuitEC-205
,
EC-214
,
EC-226
,
EC-433
,
EC-439
Throttle position sensor circuit
22EC-190
,
EC-284
,
EC-485
,
EC-487
,
EC-569
Accelerator pedal position sensor circuit 3 2 1EC-489
,
EC-555
,
EC-562
,
EC-576
Knock sensor circuit 2 3EC-297
Crankshaft position sensor (POS) circuit 2 2EC-302
Camshaft position sensor (PHASE) circuit 3 2EC-308
Vehicle speed signal circuit 2 3 3 3EC-390
Power steering pressure sensor circuit 2 3 3EC-396

TROUBLE DIAGNOSIS
EC-101
[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45
2LHeated oxygen sensor 1
heater (bank 2)[Engine is running]

Warm-up condition

Engine speed is below 3,600 rpmApproximately 8V
[Engine is running]

Engine speed is above 3,600 rpmBATTERY VOLTAGE
(11 - 14V)
3RThrottle control motor relay
power supply[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
4L/WThrottle control motor
(Close)[Ignition switch: ON]

Engine stopped

Shift lever: D

Accelerator pedal: Released0 - 14V
5L/BThrottle control motor
(Open)[Ignition switch: ON]

Engine stopped

Shift lever: D

Accelerator pedal: Fully depressed0 - 14V
6RHeated oxygen sensor 2
heater (bank 2)[Engine is running]

Engine speed is below 3,600 rpm after the
following conditions are met
–Engine: after warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load0 - 1.0V
[Ignition switch: ON]

Engine stopped
[Engine is running]

Engine speed is above 3,600 rpmBATTERY VOLTAGE
(11 - 14V)
10 ORIntake valve timing control
solenoid valve (bank 2)[Engine is running]

Warm-up condition

Idle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Warm-up condition

When revving engine up to 2,500 rpm
quickly7 - 12V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB0519E
PBIB1104E
PBIB1105E
PBIB1790E

TROUBLE DIAGNOSIS
EC-103
[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45
21
22
23W
G
RInjector No. 5
Injector No. 3
Injector No. 1[Engine is running]

Warm-up condition

Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idleBATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Warm-up condition

Engine speed is 2,000 rpmBATTERY VOLTAGE
(11 - 14V)
24 LHeated oxygen sensor 1
heater (bank 1)[Engine is running]

Warm-up condition

Engine speed is below 3,600 rpmApproximately 8V
[Engine is running]

Engine speed is above 3,600 rpmBATTERY VOLTAGE
(11 - 14V)
25 PHeated oxygen sensor 2
heater (bank 1)[Engine is running]

Engine speed is below 3,600 rpm after the
following conditions are met
–Engine: after warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load0 - 1.0V
[Ignition switch: ON]

Engine stopped
[Engine is running]

Engine speed is above 3,600 rpmBATTERY VOLTAGE
(11 - 14V)
32 OREVAP control system pres-
sure sensor[Ignition switch: ON]Approximately 1.8 - 4.8V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
SEC984C
SEC985C
PBIB0519E

TROUBLE DIAGNOSIS
EC-105
[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45
45 GYEVAP canister purge vol-
ume control solenoid valve[Engine is running]

Idle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Engine speed is about 2,000 rpm (More
than 100 seconds after starting engine)BATTERY VOLTAGE
(11 - 14V)
47 LSensor power supply
(Throttle position sensor)[Ignition switch: ON]Approximately 5V
48 LGSensor power supply
(EVAP control system pres-
sure sensor)[Ignition switch: ON]Approximately 5V
49 PUSensor power supply
(Refrigerant pressure sen-
sor)[Ignition switch: ON]Approximately 5V
50 W Throttle position sensor 1[Ignition switch: ON]

Engine stopped

Shift lever: D

Accelerator pedal: Fully releasedMore than 0.36V
[Ignition switch: ON]

Engine stopped

Shift lever: D

Accelerator pedal: Fully depressedLess than 4.75V
51 L/W Mass air flow sensor[Engine is running]

Warm-up condition

Idle speed0.9 - 1.2V
[Engine is running]

Warm-up condition

Engine speed is 2,500 rpm1.6 - 1.9V
55 W/RHeated oxygen sensor 2
(bank 2)[Engine is running]

Warm-up condition

Revving engine from idle to 3,000 rpm
quickly after the following conditions are met
–After keeping the engine speed between
3,500 and 4,000 rpm for 1 minute and at idle
for 1 minute under no load0 - Approximately 1.0V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
SEC990C
SEC991C

EC-106
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
60
61
62PU
L
YIgnition signal No. 5
Ignition signal No. 3
Ignition signal No. 1[Engine is running]

Warm-up condition

Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle0 - 0.2V
[Engine is running]

Warm-up condition

Engine speed is 2,500 rpm0.1 - 0.4V
66 BSensor ground
(Throttle position sensor)[Engine is running]

Warm-up condition

Idle speedApproximately 0V
67 B/W Sensor ground[Engine is running]

Warm-up condition

Idle speedApproximately 0V
68 BRSensor power supply
(Power steering pressure
sensor)[Ignition switch: ON]Approximately 5V
69 R Throttle position sensor 2[Ignition switch: ON]

Engine stopped

Shift lever: D

Accelerator pedal: Fully releasedLess than 4.75V
[Ignition switch: ON]

Engine stopped

Shift lever: D

Accelerator pedal: Fully depressedMore than 0.36V
70 L/R Refrigerant pressure sensor[Engine is running]

Warm-up condition

Both A/C switch and blower switch are ON
(Compressor operates)1.0 - 4.0V
73 YEngine coolant temperature
sensor[Engine is running]Approximately 0 - 4.8V
Output voltage varies with
engine coolant temperature.
74 LG/BHeated oxygen sensor 2
(bank 1)[Engine is running]

Warm-up condition

Revving engine from idle to 3,000 rpm
quickly after the following conditions are met
–After keeping the engine speed between
3,500 and 4,000 rpm for 1 minute and at idle
for 1 minute under no load0 - Approximately 1.0V
78 B/RSensor ground
(Heated oxygen sensor)[Engine is running]

Warm-up condition

Idle speedApproximately 0V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
SEC986C
SEC987C

TROUBLE DIAGNOSIS
EC-107
[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45
79
80
81SB
GY
ORIgnition signal No. 6
Ignition signal No. 4
Ignition signal No. 2[Engine is running]

Warm-up condition

Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle0 - 0.2V
[Engine is running]

Warm-up condition

Engine speed is 2,500 rpm0.1 - 0.4V
82 B/WSensor ground
(APP sensor 1, ASCD steer-
ing switch, ICC steering
switch)[Engine is running]

Warm-up condition

Idle speedApproximately 0V
83 G/ORSensor ground
(APP sensor 2)[Engine is running]

Warm-up condition

Idle speedApproximately 0V
85 PU Data link connector[Ignition switch: ON]

CONSULT-II or GST is disconnectedApproximately 5V - Battery volt-
age (11 - 14V)
86 R CAN communication line[Ignition switch: ON]Approximately 1.1 - 2.3V
Output voltage varies with the
communication status.
90 L/BSensor power supply
(APP sensor 1)[Ignition switch: ON]Approximately 5V
91 GSensor power supply
(APP sensor 2)[Ignition switch: ON]Approximately 5V
94 L CAN communication line[Ignition switch: ON]Approximately 2.6 - 3.2V
Output voltage varies with the
communication status.
98 B/PAccelerator pedal position
sensor 2[Ignition switch: ON]

Engine stopped

Accelerator pedal: Fully released0.15 - 0.60V
[Ignition switch: ON]

Engine stopped

Accelerator pedal: Fully depressed1.95 - 2.40V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
SEC986C
SEC987C