INFINITI FX35 2007 Service Manual

ASCD INDICATOR EC-625
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Revision: 2006 July 2007 FX35/FX45
Wiring DiagramNBS00409
TBWM1412E

EC-626
[VQ35DE]
ASCD INDICATOR
Revision: 2006 July 2007 FX35/FX45
Diagnostic ProcedureNBS0040A
1. CHECK OVERALL FUNCTION
Check ASCD indicator under the following conditions.
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
2. CHECK DTC
Check that DTC U1000 or U1001 is not displayed.
OK or NG
OK >> GO TO 3.
NG >> Perform trouble diagnoses for DTC U1000, U1001. Refer to EC-155, "
DTC U1000, U1001 CAN
COMMUNICATION LINE" .
3. CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
Refer to DI-31, "
SELF-DIAG RESULTS" .
OK or NG
OK >> GO TO 4.
NG >> Go to DI-34, "
DTC [B2202] Meter Communication Circuit" .
4. CHECK INTERMITTENT INCIDENT
Refer to EC-147, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
ASCD INDICATOR CONDITION SPECIFICATION
CRUISE LAMP

Ignition switch: ON
MAIN switch: pressed at the 1st
time → at the 2nd time ON
→ OFF
SET LAMP

MAIN switch: ON

When vehicle speed is
between 40km/h (25MPH)
and 144km/h (89MPH) ASCD: Operating ON
ASCD: Not operating OFF

ELECTRICAL LOAD SIGNAL EC-627
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Revision: 2006 July 2007 FX35/FX45
ELECTRICAL LOAD SIGNALPFP:25350
DescriptionNBS003ZU
The electrical load signal (Headlamp switch signal, etc.) is transferred through the CAN communication line
from BCM to ECM via IPDM E/R.
CONSULT-II Reference Value in Data Monitor ModeNBS003ZV
Specification data are reference values.
Diagnostic ProcedureNBS003ZW
1. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
1. Turn ignition switch ON.
2. Connect CONSULT-II and select “DATA MONITOR” mode.
3. Select “LOAD SIGNAL” and check indication under the following conditions.
OK or NG
OK >> GO TO 2.
NG >> GO TO 4.
2. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
Check “LOAD SIGNAL” indication under the following conditions.
OK or NG
OK >> GO TO 3.
NG >> GO TO 5.
MONITOR ITEM CONDITION SPECIFICATION
LOAD SIGNAL

Ignition switch: ON Rear window defogger switch is ON
and/or lighting switch is in 2nd. ON
Rear window defogger switch is OFF
and lighting switch is OFF. OFF
HEATER FAN SW

Engine: After warming up, idle
the engine Heater fan: Operating. ON
Heater fan: Not operating OFF
Condition Indication
Rear window defogger switch: ON ON
Rear window defogger switch: OFF OFF
PBIB0103E
Condition Indication
Lighting switch: ON at 2nd position ON Lighting switch: OFF OFF
PBIB0103E

EC-628
[VQ35DE]
ELECTRICAL LOAD SIGNAL
Revision: 2006 July 2007 FX35/FX45
3. CHECK HEATER FAN SIGNAL CIRCUIT OVERALL FUNCTION
Check “HEATER FAN SW” in “DATA MONITOR” mode with CON-
SULT-II under the following conditions.
OK or NG
OK >> INSPECTION END
NG >> GO TO 6.
4. CHECK REAR WINDOW DEFOGGER SYSTEM
Refer to GW-67, "
REAR WINDOW DEFOGGER" .
>> INSPECTION END
5. CHECK HEADLAMP SYSTEM
Refer to LT- 6 , "
HEADLAMP - XENON TYPE -" .
>> INSPECTION END
6. CHECK HEATER FAN CONTROL SYSTEM
Refer to AT C - 4 0 , "
TROUBLE DIAGNOSIS" .
>> INSPECTION END
Condition Indication
Heater fan: Operating ON
Heater fan: Not operating OFF
PBIB1995E

FUEL INJECTOR EC-629
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Revision: 2006 July 2007 FX35/FX45
FUEL INJECTORPFP:16600
Component DescriptionNBS003ZE
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the fuel injector circuit, the coil in the fuel injec-
tor is energized. The energized coil pulls the Ball valve back and
allows fuel to flow through the fuel injector into the intake manifold.
The amount of fuel injected depends upon the fuel injection pulse
duration. Pulse duration is the length of time the fuel injector remains
open. The ECM controls the injection pulse duration based on
engine fuel needs.
CONSULT-II Reference Value in Data Monitor ModeNBS003ZF
Specification data are reference values.
SEF375Z
MONITOR ITEM CONDITION SPECIFICATION
B/FUEL SCHDL See EC-137, "
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-630
[VQ35DE]
FUEL INJECTOR
Revision: 2006 July 2007 FX35/FX45
Wiring DiagramNBS003ZG
TBWM1408E

FUEL INJECTOR EC-631
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Revision: 2006 July 2007 FX35/FX45
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 ProcedureNBS003ZH
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 6.
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 6.
TER-
MINAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
21
22
23
40
41
42 W
G
R
LG
B
P Fuel injector No. 5
Fuel injector No. 3
Fuel injector No. 1
Fuel injector No. 6
Fuel injector No. 4
Fuel injector No. 2 [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)
SEC984C
SEC985C
PBIB0133E

EC-632
[VQ35DE]
FUEL INJECTOR
Revision: 2006 July 2007 FX35/FX45
3. CHECK FUNCTION OF FUEL INJECTOR-I
Without CONSULT-II
1. Turn ignition switch OFF.
2. Disconnect harness connector F50, F251
3. Turn ignition switch ON.
4. Check voltage between harness connector F50 terminal 5 and ground with CONSULT-II or tester.
5. Turn ignition switch OFF.
6. Disconnect ECM harness connector.
7. Check harness continuity between harness connector F50 and ECM as follows.
Refer to Wiring Diagram.
8. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors M82, F102

Fuse block (J/B) connector M1

15A fuse

Harness for open or short between harness connector F50 and fuse

Harness for open or short between harness connector F50 and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB2624E
Voltage: Battery voltage
Cylinder Harness connector F50
terminal ECM terminal
1623
2442
3222
4341
5121
6740
Continuity should exist.
PBIB2323E

FUEL INJECTOR EC-633
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Revision: 2006 July 2007 FX35/FX45
5. CHECK FUNCTION OF FUEL INJECTOR-II
Provide battery voltage between harness connector F251 as follows
and then interrupt it. Listen to each fuel injector operating sound.
OK or NG
OK >> INSPECTION END
NG >> GO TO 6.
6. CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect fuel injector harness connector.
3. Turn ignition switch ON.
4. Check voltage between fuel injector terminal 1 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
Cylinder Harness connector F251 terminal
(+) (–)
1
5 6
24
32
43
51
67
Operating sound should exist.
PBIB2497E
PBIB1561E
Voltage: Battery voltage
PBIB0582E

EC-634
[VQ35DE]
FUEL INJECTOR
Revision: 2006 July 2007 FX35/FX45
7. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors M82, F102

Fuse block (J/B) connector M1

10A fuse

Harness for open or short between fuel injector and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
8. CHECK FUEL INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between fuel injector terminal 2 and ECM terminals 21, 22, 23, 40, 41, 42. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 10.
NG >> GO TO 9.
9. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors F251, F50

Harness for open or short between fuel injector and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
10. CHECK FUEL INJECTOR
Refer to EC-635, "
Component Inspection" .
OK or NG
OK >> GO TO 11.
NG >> Replace malfunctioning fuel injector.
11 . CHECK INTERMITTENT INCIDENT
Refer to EC-147, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Continuity should exist.