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![INFINITI FX35 2004 Service Manual EC-736
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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](/manual-img/42/57021/w960_57021-2076.png "INFINITI FX35 2004 Service Manual EC-736
[VK45DE]
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")
EC-736
[VK45DE]
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-698, "
Accelerator Pedal Released Position Learning" .
>> GO TO 12.
12. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform EC-698, "
Throttle Valve Closed Position Learning" .
>> GO TO 13.
13. PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-698, "
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 17.12 ± 5° BTDC (in P or N position)
PBIB1487E
650 ± 50 rpm (in P or N position)
650 ± 50 rpm (in P or N position)
SEF058Y
Page 2078 of 4449
![INFINITI FX35 2004 Service Manual TROUBLE DIAGNOSIS
EC-737
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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.](/manual-img/42/57021/w960_57021-2077.png "INFINITI FX35 2004 Service Manual TROUBLE DIAGNOSIS
EC-737
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15. CHECK IGNITION TIMING AGAIN
1. Run engine at idle.
2. Check ignition timing with a timing light.")
TROUBLE DIAGNOSIS
EC-737
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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-196, "
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-966 .
Check crankshaft position sensor (POS) and circuit. Refer to EC-960 .
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 all IVIS (NATS) ignition key IDs. Refer to
EC-717, "
IVIS (Infiniti Vehicle Immobilizer System — NATS)" .
>> GO TO 4. 12 ± 5° BTDC (in P or N position)
PBIB1487E
Page 2079 of 4449
![INFINITI FX35 2004 Service Manual EC-738
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
Symptom Matrix ChartABS00BZS
SYSTEM — BASIC ENGINE CONTROL SYSTEM
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
EN](/manual-img/42/57021/w960_57021-2078.png "INFINITI FX35 2004 Service Manual EC-738
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
Symptom Matrix ChartABS00BZS
SYSTEM — BASIC ENGINE CONTROL SYSTEM
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
EN")
EC-738
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
Symptom Matrix ChartABS00BZS
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-1280
Fuel pressure regulator system334444444 4EC-700
Injector circuit 11232 22 2EC-1274
Evaporative emission system 334444444 4EC-1320
Air Positive crankcase ventilation sys-
tem
334444444 41EC-1332
Incorrect idle speed adjustment 1 1 1 1 1EC-687
Electric throttle control actuator 112332222 2 2EC-1077,
EC-1079
IgnitionIncorrect ignition timing adjustment33111 11 1EC-687
Ignition circuit 11222 22 2EC-1262
Power supply and ground circuit22333 33 23EC-785
Mass air flow sensor circuit
1
122
222 2EC-822
,
EC-830
,
EC-1064
Engine coolant temperature sensor circuit
333EC-842,
EC-855
Heated oxygen sensor 1 circuitEC-863
,
EC-872
,
EC-884
,
EC-1103
,
EC-1109
Throttle position sensor circuit
22EC-848
,
EC-942
,
EC-1152
,
EC-1154
,
EC-1156
,
EC-1239
Accelerator pedal position sensor circuit 3 2 1EC-1225
,
EC-1232
,
EC-1246
Knock sensor circuit 2 3EC-955
Crankshaft position sensor (POS) circuit 2 2EC-960
Camshaft position sensor (PHASE) circuit 3 2EC-966
Vehicle speed signal circuit 2 3 3 3EC-1046
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![INFINITI FX35 2004 Service Manual TROUBLE DIAGNOSIS
EC-751
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Revision: 2004 November 2004 FX35/FX45
2LHeated oxygen sensor 1
heater (bank 1)[Engine is running]
Warm-up condition
Engine speed is belo](/manual-img/42/57021/w960_57021-2091.png "INFINITI FX35 2004 Service Manual TROUBLE DIAGNOSIS
EC-751
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Revision: 2004 November 2004 FX35/FX45
2LHeated oxygen sensor 1
heater (bank 1)[Engine is running]
Warm-up condition
Engine speed is belo")
TROUBLE DIAGNOSIS
EC-751
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Revision: 2004 November 2004 FX35/FX45
2LHeated oxygen sensor 1
heater (bank 1)[Engine is running]
Warm-up condition
Engine speed is below 3,000 rpmApproximately 7V
[Engine is running]
Engine speed is above 3,000 rpmBATTERY VOLTAGE
(11 - 14V)
3PThrottle control motor relay
power supply[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
4L/WThrottle control motor
(Close)[Ignition switch: ON]
Engine stopped
Shift lever position is D
Accelerator pedal is released0 - 14V
5L/BThrottle control motor
(Open)[Ignition switch: ON]
Engine stopped
Shift lever position is D
Accelerator pedal is fully depressed0 - 14V
6RHeated 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)
10 ORIntake valve timing control
solenoid valve (bank 1)[Engine is running]
Warm-up condition
Idle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Warm-up condition
Engine speed is 2,000rpm7 - 12V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB0519E
PBIB1104E
PBIB1105E
PBIB1790E
Page 2093 of 4449
![INFINITI FX35 2004 Service Manual EC-752
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
2LHeated oxygen sensor 1
heater (bank 1)[Engine is running]
Warm-up condition
Engine speed is below 3,000 rpmApproximately 7](/manual-img/42/57021/w960_57021-2092.png "INFINITI FX35 2004 Service Manual EC-752
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
2LHeated oxygen sensor 1
heater (bank 1)[Engine is running]
Warm-up condition
Engine speed is below 3,000 rpmApproximately 7")
EC-752
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
2LHeated oxygen sensor 1
heater (bank 1)[Engine is running]
Warm-up condition
Engine speed is below 3,000 rpmApproximately 7V
[Engine is running]
Engine speed is above 3,000 rpmBATTERY VOLTAGE
(11 - 14V)
3PThrottle control motor relay
power supply[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
4L/WThrottle control motor
(Close)[Ignition switch: ON]
Engine stopped
Shift lever position is D
Accelerator pedal is released0 - 14V
5L/BThrottle control motor
(Open)[Ignition switch: ON]
Engine stopped
Shift lever position is D
Accelerator pedal is fully depressed0 - 14V
6RHeated 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)
10 ORIntake valve timing control
solenoid valve (bank 1)[Engine is running]
Warm-up condition
Idle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Warm-up condition
Engine speed is 2,000rpm7 - 12V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB0519E
PBIB1104E
PBIB1105E
PBIB1790E
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![INFINITI FX35 2004 Service Manual EC-754
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
21
22
23
40
41
42
44
63W
R
P
PU
BR
B
OR
GInjector No. 5
Injector No. 3
Injector No. 1
Injector No. 6
Injector No. 4
Injector N](/manual-img/42/57021/w960_57021-2094.png "INFINITI FX35 2004 Service Manual EC-754
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
21
22
23
40
41
42
44
63W
R
P
PU
BR
B
OR
GInjector No. 5
Injector No. 3
Injector No. 1
Injector No. 6
Injector No. 4
Injector N")
EC-754
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
21
22
23
40
41
42
44
63W
R
P
PU
BR
B
OR
GInjector No. 5
Injector No. 3
Injector No. 1
Injector No. 6
Injector No. 4
Injector No. 2
Injector No. 7
Injector No. 8[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 BRHeated oxygen sensor 1
heater (bank 2)[Engine is running]
Warm-up condition
Engine speed is below 3,000 rpmApproximately 7V
[Engine is running]
Engine speed is above 3,000 rpmBATTERY VOLTAGE
(11 - 14V)
25 PHeated 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)
29 GY VIAS control solenoid valve[Engine is running]
Shift lever position is P or N0 - 1.0V
[Engine is running]
Shift lever position is DBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Engine speed is above 5,000 rpm0 - 1.0V
32 OREVAP control system pres-
sure sensor[Ignition switch: ON]Approximately 1.8 - 4.8V
34 YIntake air temperature sen-
sor[Engine is running]Approximately 0 - 4.8V
Output voltage varies with intake
air temperature. TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB0042E
PBIB0043E
PBIB0519E
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(bank 2)[Engine is running]Warm-up condition
Engine speed is 2,000 rpm0](/manual-img/42/57021/w960_57021-2095.png "INFINITI FX35 2004 Service Manual TROUBLE DIAGNOSIS
EC-755
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Revision: 2004 November 2004 FX35/FX4535 BRHeated oxygen sensor 1
(bank 2)[Engine is running]Warm-up condition
Engine speed is 2,000 rpm0")
TROUBLE DIAGNOSIS
EC-755
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Revision: 2004 November 2004 FX35/FX4535 BRHeated oxygen sensor 1
(bank 2)[Engine is running]Warm-up condition
Engine speed is 2,000 rpm0 - Approximately 1.0V
(Periodically change)
36 W Knock sensor 2[Engine is running]
Idle speedApproximately 2.5V
45 WEVAP 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)11 - 1 4 V
46
60
61
62
65
79
80
81L
SB
L
Y
Y
LG
GY
GIgnition signal No. 7
Ignition signal No. 5
Ignition signal No. 3
Ignition signal No. 1
Ignition signal No. 8
Ignition 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 2,000 rpm0.1 - 0.4V
47 LSensor power supply
(Throttle position sensor)[Ignition switch: ON]Approximately 5V
48 LSensor power supply
(Mass air flow sensor /
EVAP control system pres-
sure sensor)[Ignition switch: ON]Approximately 5V
49 PUSensor power supply
(Refrigerant pressure sen-
sor)[Ignition switch: ON]Approximately 5V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB0050E
PBIB0051E
PBIB0044E
PBIB0045E
Page 2097 of 4449
![INFINITI FX35 2004 Service Manual EC-756
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
50 W Throttle position sensor 1[Ignition switch: ON]
Engine stopped
Shift lever position is D
Accelerator pedal is fully rel](/manual-img/42/57021/w960_57021-2096.png "INFINITI FX35 2004 Service Manual EC-756
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
50 W Throttle position sensor 1[Ignition switch: ON]
Engine stopped
Shift lever position is D
Accelerator pedal is fully rel")
EC-756
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
50 W Throttle position sensor 1[Ignition switch: ON]
Engine stopped
Shift lever position is D
Accelerator pedal is fully releasedMore than 0.36V
[Ignition switch: ON]
Engine stopped
Shift lever position is D
Accelerator pedal is fully depressedLess than 4.75V
51 L/W Mass air flow sensor[Engine is running]
Warm-up condition
Idle speed1.2 - 1.8V
[Engine is running]
Warm-up condition
Engine speed is 2,500 rpm1.7 - 2.4V
53 R/LIntake valve timing control
position sensor (bank 2)[Engine is running]
Warm-up condition
Idle speed0 - 1.0V
[Engine is running]
Engine speed is 2,000 rpm0 - 1.0V
55 W/RHeated 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
66 BSensor ground
(Throttle position sensor)[Engine is running]
Warm-up condition
Idle speedApproximately 0V
67 B/WSensor ground
(Mass air flow sensor / IAT
sensor / Power steering
pressure sensor / EVAP
control system pressure
sensor / Refrigerant pres-
sure sensor / ECT sensor)[Engine is running]
Warm-up condition
Idle speedApproximately 0V
68 SBSensor power supply
(Power steering pressure
sensor)[Ignition switch: ON]Approximately 5V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB2046E