OIL INFINITI FX35 2007 Service Manual

EC-1332
[VK45DE]
IGNITION SIGNAL
Revision: 2006 July 2007 FX35/FX45
IGNITION SIGNALPFP:22448
Component DescriptionNBS004GT
IGNITION COIL & POWER TRANSISTOR
The ignition signal from the ECM is sent to and amplified by the power transistor. The power transistor turns
ON and OFF the ignition coil primary circuit. This ON/OFF operation induces the proper high voltage in the coil
secondary circuit.
: Vehicle front 1. Ignition coil
(With power transistor)
(Bank 2) 2. Ignition coil
(With power transistor)
(Bank 1)
PBIB3234E

IGNITION SIGNAL EC-1339
[VK45DE]
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Revision: 2006 July 2007 FX35/FX45
3. CHECK OVERALL FUNCTION
Without CONSULT-II
1. Let engine idle.
2. Read the voltage signal between ECM terminals 46, 60, 61, 62, 65, 79, 80, 81 and ground with an oscilloscope.
3. Verify that the oscilloscope screen shows the signal wave as shown below.
NOTE:
The pulse cycle changes depending on rpm at idle.
OK or NG
OK >> INSPECTION END
NG >> GO TO 10.
4. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
2. Check voltage between ECM terminals 119, 120 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> Go to EC-813, "
POWER SUPPLY AND GROUND CIR-
CUIT" .
PBIB2094E
PBIB0044E
Voltage: Battery voltage
MBIB0034E

EC-1340
[VK45DE]
IGNITION SIGNAL
Revision: 2006 July 2007 FX35/FX45
5. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect condenser (1) harness connector.
–Vehicle front
3. Turn ignition switch ON.
4. Check voltage between condenser terminal 1 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 8.
NG >> GO TO 6.
6. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E7.
3. Check harness continuity between IPDM E/R terminal 17 and condenser terminal 1. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> Go to EC-813, "POWER SUPPLY AND GROUND CIRCUIT" .
NG >> GO TO 7.
7. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E19, F49

Harness for open or short between IPDM E/R and condenser
>> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB3233E
Voltage: Battery voltage
PBIB0624E
Continuity should exist.

IGNITION SIGNAL EC-1341
[VK45DE]
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Revision: 2006 July 2007 FX35/FX45
8. CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between condenser terminal 2 and ground. Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 9.
NG >> Repair open circuit or short to power in harness or connectors.
9. CHECK CONDENSER
Refer to EC-1343, "
Component Inspection"
OK or NG
OK >> GO TO 10.
NG >> Replace condenser.
10. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-V
1. Reconnect all harness connectors disconnected.
2. Disconnect ignition coil harness connector.
3. Turn ignition switch ON.
4. Check voltage between ignition coil terminal 3 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 12.
NG >> GO TO 11. Continuity should exist.
: Vehicle front 1. Ignition coil
(With power transistor)
(Bank 2) 2. Ignition coil
(With power transistor)
(Bank 1)
Voltage: Battery voltage
PBIB3234E
PBIB0138E

EC-1342
[VK45DE]
IGNITION SIGNAL
Revision: 2006 July 2007 FX35/FX45
11 . DETECT MALFUNCTIONING PART
Check the following.

Harness connector F49

Harness for open or short between ignition coil and harness connector F49
>> Repair or replace harness or connectors.
12. CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between ignition coil terminal 2 and ground. Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 13.
NG >> Repair open circuit or short to power in harness or connectors.
13. CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 46, 60, 61, 62, 65, 79, 80, 81 and ignition coil terminal 1. Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 14.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
14. CHECK IGNITION COIL WITH POWER TRANSISTOR
Refer to EC-1343, "
Component Inspection" .
OK or NG
OK >> GO TO 15.
NG >> Replace ignition coil with power transistor.
15. CHECK INTERMITTENT INCIDENT
Refer to EC-812, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Continuity should exist.
Continuity should exist.

IGNITION SIGNAL EC-1343
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Revision: 2006 July 2007 FX35/FX45
Component InspectionNBS004GW
IGNITION COIL WITH POWER TRANSISTOR
CAUTION:
Do the following procedure in the place where ventilation is good without the combustible.
1. Turn ignition switch OFF.
2. Disconnect ignition coil harness connector.
3. Check resistance between ignition coil terminals as follows.
4. If NG, replace ignition coil with power transistor. If OK, go to next step.
5. Turn ignition switch OFF.
6. Reconnect all harness connectors disconnected.
7. Remove fuel pump fuse in IPDM E/R to release fuel pressure.
NOTE:
Do not use CONSULT-II to release fuel pressure, or fuel pres-
sure applies again during the following procedure.
8. Start engine.
9. After engine stalls, crank it two or three times to release all fuel pressure.
10. Turn ignition switch OFF.
11. Remove all ignition coil harness connectors to avoid the electri- cal discharge from the ignition coils.
12. Remove ignition coil and spark plug of the cylinder to be checked.
13. Crank engine for five seconds or more to remove combustion gas in the cylinder.
14. Connect spark plug and harness connector to ignition coil.
15. Fix ignition coil using a rope etc. with gap of 13 - 17 mm between the edge of the spark plug and grounded metal portion
as shown in the figure.
16. Crank engine for about three seconds, and check whether spark is generated between the spark plug and the grounded metal
portion.
CAUTION:

Do not approach to the spark plug and the ignition coil
within 50cm. Be careful not to get an electrical shock
while checking, because the electrical discharge voltage
becomes 20kV or more.

It might cause to damage the ignition coil if the gap of more than 17 mm is taken.
NOTE:
When the gap is less than 13 mm, the spark might be generated even if the coil is malfunctioning.
17. If NG, replace ignition coil with power transistor.
CONDENSER
1. Turn ignition switch OFF.
2. Disconnect condenser harness connector.
Terminal No. (Polarity) Resistance Ω [at 25 °C (77 °F)]
1 and 2 Except 0 or ∞
1 and 3 Except 0
2 and 3
Spark should be generated.
PBIB0847E
PBIB1482E
PBIB2325E

EC-1344
[VK45DE]
IGNITION SIGNAL
Revision: 2006 July 2007 FX35/FX45
3. Check resistance between condenser terminals 1 and 2.
Removal and InstallationNBS004GX
IGNITION COIL WITH POWER TRANSISTOR
Refer to EM-191, "IGNITION COIL" .
Resistance: Above 1 M
Ω [at 25 °C (77 °F)]
PBIB0794E

EC-1356
[VK45DE]
VARIABLE INDUCTION AIR CONTROL SYSTEM (VIAS)
Revision: 2006 July 2007 FX35/FX45
COMPONENT DESCRIPTION
Power Valve
The power valve is installed in intake manifold collector and used to
control the suction passage of the variable induction air control sys-
tem. It is set in the fully closed or fully opened position by the power
valve actuator (1) operated by the vacuum stored in the surge tank.
The vacuum in the surge tank is controlled by the VIAS control sole-
noid valve.

: Vehicle front
VIAS Control Solenoid Valve
The VIAS control solenoid valve (1) cuts the intake manifold vacuum
signal for power valve control. It responds to ON/OFF signals from
the ECM. When the solenoid is off, the vacuum signal from the
intake manifold is cut. When the ECM sends an ON signal the coil
pulls the plunger downward and feeds the vacuum signal to the
power valve actuator.

Vacuum tank (2)
CONSULT-II Reference Value in Data Monitor ModeNBS004GO
PBIB3237E
PBIB3236E
MONITOR ITEM CONDITION SPECIFICATION
VIAS S/V

Selector lever: P or N ON

Engine speed: More than 5,000 rpm

Selector lever: Except P or N

Engine speed: Less than 5,000 rpm OFF

FRONT BUMPER EI-15
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Revision: 2006 July 2007 FX35/FX45
CAUTION:
Bumper fascia is made of resin. Do not apply strong force to it, and be careful to prevent contact with
oil.
REMOVAL
1. Remove front grille. Refer to EI-22, "Removal and Installation" .
2. Remove front fillet molding assembly. Only the place connected with a front bumper fascia is removed.
3. Remove bolts and clips of front undercover.
4. Remove screws and clips of right/left fender protectors on front side. Refer to EI-24, "
Removal and Installation" .
5. Remove bolts of right/left fender.
6. Insert driver rolled with cloth between bumper fascia and “S” type clips, and remove bumper fascia.
7. Disconnect harness connector of fog lamps.
8. Remove bumper fascia assembly. CAUTION:
When removing bumper fascia, 2 workers are required so as to prevent it from dropping.
9. Remove bumper energy absorber.
10. Remove bolts and nuts of bumper reinforcement, and remove bumper reinforcement. Remove bolts and nuts with power tool.
11. Remove ICC sensor with bracket. Refer to Refer to ACS-75, "
REMOVAL AND INSTALLATION" .
PIIA4350E
PIIA4338E
PIIA4331E

EI-18
REAR BUMPER
Revision: 2006 July 2007 FX35/FX45
CAUTION:
Bumper fascia is made of resin. Do not apply strong force to it, and be careful to prevent contact with
oil.
REMOVAL
1. Remove bumper side cover A (RH/LH).
2. Remove fillet molding assembly. Only the place connected with a rear bumper fascia is removed.
3. Remove luggage finisher mask (RH/LH). Refer to EI-45,
"Removal and Installation" .
4. Remove bumper fascia special bolts from rear fender (RH/LH).
5. Remove bumper fascia bolts from rear fender (RH/LH).
6. Remove lower portion of bumper fascia bolts.
7. Insert driver rolled with cloth between bumper fascia and “S” type clips, and remove bumper fascia.
1. Bumper side cover A (RH) 2. Bumper side cover A (LH) 3. Special bolt
4. Clip (“S” type) 5. Bumper stay (RH) 6. Bumper reinforcement
7. Nut 8. Bumper stay (LH) 9. Nut
10. Energy absorber 11. Fillet molding (LH) 12. Bumper closing (LH)
13. Bolt 14. Bolt 15. Clip (C101)
16. Bolt 17. Clip (C205) 18. Bumper fascia assembly
19. Bumper closing (RH) 20. Fillet molding (RH)
PIIA4347E
PIIA4334E
PIIA4335E