INFINITI FX35 2005 Service Manual

EC-1348
[VK45DE]
IGNITION SIGNAL
Revision: 2005 July 2005 FX
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-1349, "
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.
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.
Continuity should exist.
Voltage: Battery voltage
PBIB1516E
PBIB0138E

IGNITION SIGNAL EC-1349
[VK45DE]
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Revision: 2005 July 2005 FX
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-1349, "
Component Inspection" .
OK or NG
OK >> GO TO 15.
NG >> Replace ignition coil with power transistor.
15. CHECK INTERMITTENT INCIDENT
Refer to EC-854, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Component InspectionABS00E5S
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. Continuity should exist.
Continuity should exist.
Terminal No. (Polarity) Resistance
Ω [at 25 °C (77 °F)]
1 and 2 Except 0 or ∞
1 and 3 Except 0
2 and 3
PBIB0847E

EC-1350
[VK45DE]
IGNITION SIGNAL
Revision: 2005 July 2005 FX
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 17 mm or more is taken.
NOTE:
When the gap is 13 mm or less, 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.
3. Check resistance between condenser terminals 1 and 2.
Removal and InstallationABS007WU
IGNITION COIL WITH POWER TRANSISTOR
Refer to EM-189, "IGNITION COIL" .
Spark should be generated.
PBIB1482E
PBIB2325E
Resistance: Above 1 M
Ω at 25 °C (77 °F)
PBIB0794E

INJECTOR CIRCUIT EC-1351
[VK45DE]
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Revision: 2005 July 2005 FX
INJECTOR CIRCUITPFP:16600
Component DescriptionABS007WV
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the injector circuit, the coil in the injector is
energized. The energized coil pulls the ball valve back and allows
fuel to flow through the injector into the intake manifold. The amount
of fuel injected depends upon the injection pulse duration. Pulse
duration is the length of time the injector remains open. The ECM
controls the injection pulse duration based on engine fuel needs.
CONSULT-II Reference Value in Data Monitor ModeABS007WW
Specification data are reference values.
SEF375Z
MONITOR ITEM CONDITION SPECIFICATION
B/FUEL SCHDL See EC-844, "
TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
INJ PULSE-B1
INJ PULSE-B2

Engine: After warming up

Selector lever: P or N

Air conditioner switch: OFF

No load Idle 2.0 - 3.0 msec
2,000 rpm 1.9 - 2.9 msec

EC-1352
[VK45DE]
INJECTOR CIRCUIT
Revision: 2005 July 2005 FX
Wiring DiagramABS007WX
TBWM0264E

INJECTOR CIRCUIT EC-1353
[VK45DE]
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Revision: 2005 July 2005 FX
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnostic ProcedureABS00E5T
1. INSPECTION START
Turn ignition switch to START.
Is any cylinder ignited?
Ye s o r N o
Yes (With CONSULT-II)>>GO TO 2.
Yes (Without CONSULT-II)>>GO TO 3.
No >> GO TO 3.
2. CHECK OVERALL FUNCTION
With CONSULT-II
1. Start engine.
2. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-II.
3. Make sure that each circuit produces a momentary engine speed drop.
OK or NG
OK >> INSPECTION END
NG >> GO TO 3.
TER-
MINAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
21
22
23
40
41
42
44
63 W
R
P
PU
BR
B
OR
G Injector 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 idle BATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Warm-up condition

Engine speed: 2,000 rpm BATTERY VOLTAGE
(11 - 14V)
PBIB0042E
PBIB0043E
PBIB0133E

EC-1354
[VK45DE]
INJECTOR CIRCUIT
Revision: 2005 July 2005 FX
3. CHECK FUNCTION OF INJECTOR-I
1. Turn ignition switch OFF.
2. Disconnect harness connector F21, F201 (bank 1) and F41, F221 (bank 2).
3. Turn ignition switch ON.
4. Check voltage between the following; harness connector F21 terminal 5 and ground,
harness connector F41 terminal 5 and ground
with CONSULT-II or tester.
5. Turn ignition switch OFF.
6. Disconnect ECM harness connector.
7. Check harness continuity between the following terminals.
8. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4. Voltage: Battery voltage
Cylinder Harness connector terminal ECM terminal
1 F21 terminal 3 23
3 F21 terminal 2 22
5 F21 terminal 1 21
7 F21 terminal 6 44
2 F41 terminal 3 42
4 F41 terminal 2 41
6 F41 terminal 1 40
8 F41 terminal 6 63
Continuity should exist.
PBIB2561E
PBIB0180E

INJECTOR CIRCUIT EC-1355
[VK45DE]
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Revision: 2005 July 2005 FX
4. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors M82, F102

Harness connectors F21, F201

Harness connectors F41, F221

Fuse block (J/B) connector M1

15A fuse

Harness for open or short between harness connector F21 and fuse

Harness for open or short between harness connector F41 and fuse

Harness for open or short between harness connector F21 and ECM

Harness for open or short between harness connector F41 and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK FUNCTION OF INJECTOR-II
Provide battery voltage between the following terminals, and then
interrupt it. Listen to each injector operating sound.
OK or NG
OK >> INSPECTION END
NG >> GO TO 6.
Cylinder Harness connector terminal
(+) (–)
1
F201 5 3
32
51
76
2
F221 5 3
42
61
86
Operating sound should exist.
PBIB2449E

EC-1356
[VK45DE]
INJECTOR CIRCUIT
Revision: 2005 July 2005 FX
6. CHECK SUB-HARNESS CIRCUIT FOR OPEN AND SHORT
1. Disconnect injector harness connectors.
2. Check harness continuity between the following terminals. Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
7. CHECK INJECTOR
Refer to EC-1357, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace injector.
8. CHECK INTERMITTENT INCIDENT
Refer to EC-854, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Harness connector terminal Injector terminal
F201 terminal 1
2
F201 terminal 2
F201 terminal 3
F201 terminal 6
F201 terminal 5 1
F221 terminal 1
2
F221 terminal 2
F221 terminal 3
F221 terminal 6
F221 terminal 5 1
Continuity should exist.
PBIB1518E

INJECTOR CIRCUIT EC-1357
[VK45DE]
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Revision: 2005 July 2005 FX
Component InspectionABS00E5U
INJECTOR
1. Disconnect injector harness connector.
2. Check resistance between terminals as shown in the figure.
Removal and InstallationABS007X0
INJECTOR
Refer to EM-192, "FUEL INJECTOR AND FUEL TUBE" .
Resistance: 13.5 - 17.5
Ω [at 10 - 60 °C (50 - 140 °F)]
PBIB1727E