INFINITI FX35 2005 Service Manual

EC-1338
[VK45DE]
VARIABLE INDUCTION AIR CONTROL SYSTEM (VIAS)
Revision: 2005 July 2005 FX
Without CONSULT-II
Check air passage continuity and operation delay time under the fol-
lowing conditions.
Operation takes less than 1 second.
VACUUM TANK
1. Disconnect vacuum hose connected to vacuum tank.
2. Connect a vacuum pump to the port A of vacuum tank.
3. Apply vacuum and make sure that vacuum exists at the port B.
Removal and InstallationABS007WP
VIAS CONTROL SOLENOID VALVE
Refer to EM-178, "INTAKE MANIFOLD" .
Condition Air passage continuity
between A and B Air passage continuity
between A and C
12V direct current supply
between terminals 1 and 2 Ye s N o
No supply No Yes
MEC488B
PBIB0846E

IGNITION SIGNAL EC-1339
[VK45DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2005 July 2005 FX
IGNITION SIGNALPFP:22448
Component DescriptionABS007WQ
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.
PBIB1516E

EC-1340
[VK45DE]
IGNITION SIGNAL
Revision: 2005 July 2005 FX
Wiring DiagramABS007WR
TBWM0726E

IGNITION SIGNAL EC-1341
[VK45DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2005 July 2005 FX
Specification data are reference values and are measured between each terminal and ground.
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.
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
111 W / B ECM relay
(Self shut-off) [Engine is running]
[Ignition switch: OFF]

For a few seconds after turning ignition
switch OFF 0 - 1.5V
[Ignition switch: OFF]

More than a few seconds after turning igni-
tion switch OFF BATTERY VOLTAGE
(11 - 14V)
11 9
120 R
R Power supply for ECM
[Ignition switch: ON] BATTERY VOLTAGE
(11 - 14V)

EC-1342
[VK45DE]
IGNITION SIGNAL
Revision: 2005 July 2005 FX
TBWM0727E

IGNITION SIGNAL EC-1343
[VK45DE]
C
D E
F
G H
I
J
K L
M A
EC
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.) TER-
MINAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
46
60
61
62 L
SB
L
Y Ignition signal No. 7
Ignition 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 idle 0 - 0.2V
[Engine is running]

Warm-up condition

Engine speed: 2,000 rpm 0.1 - 0.4V
PBIB0044E
PBIB0045E

EC-1344
[VK45DE]
IGNITION SIGNAL
Revision: 2005 July 2005 FX
TBWM0728E

IGNITION SIGNAL EC-1345
[VK45DE]
C
D E
F
G H
I
J
K L
M A
EC
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 ProcedureABS00E5R
1. CHECK ENGINE START
Turn ignition switch OFF, and restart engine.
Is engine running?
Ye s o r N o
Yes (With CONSULT-II)>>GO TO 2.
Yes (Without CONSULT-II)>>GO TO 3.
No >> GO TO 4.
2. CHECK OVERALL FUNCTION
With CONSULT-II
1. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-II.
2. Make sure that each circuit produces a momentary engine speed drop.
OK or NG
OK >> INSPECTION END
NG >> GO TO 10.
TER-
MINAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
65
79
80
81 Y
LG
GY
G 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 idle 0 - 0.2V
[Engine is running]

Warm-up condition

Engine speed: 2,000 rpm 0.1 - 0.4V
PBIB0044E
PBIB0045E
PBIB0133E

EC-1346
[VK45DE]
IGNITION SIGNAL
Revision: 2005 July 2005 FX
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-855, "
POWER SUPPLY AND GROUND CIR-
CUIT" .
PBIB1549E
PBIB0044E
Voltage: Battery voltage
MBIB0034E

IGNITION SIGNAL EC-1347
[VK45DE]
C
D E
F
G H
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J
K L
M A
EC
Revision: 2005 July 2005 FX
5. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect condenser harness connector.
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-855, "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.
PBIB1532E
Voltage: Battery voltage
PBIB0624E
Continuity should exist.