diagram INFINITI FX35 2004 Service Manual

EC-638
[VQ35DE]
SNOW MODE SWITCH
Revision: 2004 November 2004 FX35/FX45
4. CHECK POWER SUPPLY CIRCUIT-I
1. Disconnect “unified meter and A/C amp.” harness connector.
2. Turn ignition switch ON.
3. Check voltage between “unified meter and A/C amp.” terminal
12 and ground under the following conditions with CONSULT-II
or tester.
OK or NG
OK >> GO TO 8.
NG >> GO TO 5.
5. CHECK POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect snow mode switch.
3. Turn ignition switch ON.
4. Check voltage between snow mode switch terminal 1 and
ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.

10A fuse

Fuse block (J/B) harness connector M1

Harness for open or short between snow mode switch and fuse.
>> Repair open circuit or short to ground or short to power in harness or connectors.
7. CHECK SNOW MODE SWITCH OUT PUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between snow mode switch terminal 3 and “unified meter and A/C amp.” termi-
nal 12. Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
CONDITION VOLTAGE
Snow mode switch: ON Battery voltage
Snow mode switch: OFF 0V
PBIB2010E
Voltage: Battery voltage.
PBIB2011E
Continuity should exist.

SNOW MODE SWITCH
EC-639
[VQ35DE]
C
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EC
Revision: 2004 November 2004 FX35/FX45
8. CHECK SNOW MODE INDICATOR LAMP INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect snow mode switch harness connector.
3. Check harness continuity between snow mode switch terminal 5 and “unified meter and A/C amp.” termi-
nal 12. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
9. CHECK SNOW MODE INDICATOR LAMP GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between snow mode switch terminal 6 and ground.
Refer to Wiring Diagram.
2. Also check harness for short to power.
OK or NG
OK >> GO TO 10.
NG >> Repair open circuit or short to power in harness or connectors.
10. CHECK SNOW MODE INDICATOR LAMP
Check harness continuity between snow mode switch terminals 5 and 6 under the following conditions.
OK or NG
OK >> GO TO 11.
NG >> Replace snow mode switch.
11 . CHECK SNOW MODE SWITCH
Refer to EC-640, "
Component Inspection" .
OK or NG
OK >> GO TO 12.
NG >> Replace snow mode switch.Continuity should exist.
Continuity should exist.
Condition Continuity
1 Should exist.
2 Should not exist.
PBIB2082E

MIL AND DATA LINK CONNECTOR
EC-641
[VQ35DE]
C
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EC
Revision: 2004 November 2004 FX35/FX45
MIL AND DATA LINK CONNECTORPFP:24814
Wiring DiagramABS006Z6
TBWM0268E

PRECAUTIONS
EC-673
[VK45DE]
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Revision: 2004 November 2004 FX35/FX45

Do not operate fuel pump when there is no fuel in lines.

Tighten fuel hose clamps to the specified torque.

Do not depress accelerator pedal when starting.

Immediately after starting, do not rev up engine unneces-
sarily.

Do not rev up engine just prior to shutdown.

When installing C.B. ham radio or a mobile phone, be sure
to observe the following as it may adversely affect elec-
tronic control systems depending on installation location.
–Keep the antenna as far as possible from the electronic
control units.
–Keep the antenna feeder line more than 20 cm (8 in) away
from the harness of electronic controls.
Do not let them run parallel for a long distance.
–Adjust the antenna and feeder line so that the standing-
wave radio can be kept smaller.
–Be sure to ground the radio to vehicle body.
Wiring Diagrams and Trouble DiagnosisABS00BZ0
When you read wiring diagrams, refer to the following:

GI-15, "How to Read Wiring Diagrams"

PG-3, "POWER SUPPLY ROUTING CIRCUIT" for power distribution circuit
When you perform trouble diagnosis, refer to the following:

GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES"

GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident"
PBIB1508E
SEF709Y
SEF708Y

EC-676
[VK45DE]
ENGINE CONTROL SYSTEM
Revision: 2004 November 2004 FX35/FX45
ENGINE CONTROL SYSTEMPFP:23710
System DiagramABS00BZ3
PBIB2296E

ENGINE CONTROL SYSTEM
EC-677
[VK45DE]
C
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EC
Revision: 2004 November 2004 FX35/FX45
Vacuum Hose DrawingABS00BZ4
Refer to EC-676, "System Diagram" for Vacuum Control System.
PBIB1143E

BASIC SERVICE PROCEDURE
EC-695
[VK45DE]
C
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Revision: 2004 November 2004 FX35/FX45
22. CHECK HEATED OXYGEN SENSOR 1 (BANK 2) SIGNAL
Without CONSULT-II
1. Switch the monitored sensor from bank 1 to bank 2. Refer to EC-719, "
How to Switch Monitored Sensor
From Bank 1 to Bank 2 or Vice Versa" .
2. Running engine at 2,000 rpm under no load (The engine is warmed up to normal operating temperature.),
check that the MIL comes on more than 5 times during 10 seconds.
OK or NG
OK >>INSPECTION END
NG (MIL does not come on)>>GO TO 24.
NG (MIL comes on less than 5 times)>>GO TO 31.
23. CHECK HEATED OXYGEN SENSOR 1 (BANK 1) HARNESS
1. Turn ignition switch OFF and disconnect battery ground cable.
2. Disconnect ECM harness connector.
3. Disconnect heated oxygen sensor 1 (bank 1) harness connector.
4. Check harness continuity between ECM terminal 16 and heated oxygen sensor 1 (bank 1) terminal 1.
Refer to Wiring Diagram, EC-865, "
BANK 1" .
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 25.
NG >> 1. Repair or replace harness between ECM and heated oxygen sensor 1 (bank 1).
2. GO TO 4.
24. CHECK HEATED OXYGEN SENSOR 1 (BANK 2) HARNESS
1. Turn ignition switch OFF and disconnect battery ground cable.
2. Disconnect ECM harness connector.
3. Disconnect heated oxygen sensor 1 (bank 2) harness connector.
4. Check harness continuity between ECM terminal 35 and heated oxygen sensor 1 (bank 2) terminal 1.
Refer to Wiring Diagram, EC-867, "
BANK 2" .
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 25.
NG >> 1. Repair or replace harness between ECM and heated oxygen sensor 1 (bank 2).
2. GO TO 4.
25. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Reconnect ECM harness connector.
2. Reconnect heated oxygen sensor 1 harness connector.
3. Perform EC-698, "
Accelerator Pedal Released Position Learning" .
>> GO TO 26.
26. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform EC-698, "
Throttle Valve Closed Position Learning" .
>> GO TO 27.
Continuity should exist.
Continuity should exist.

EC-748
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
Circuit DiagramABS00BZU
TBWM0321E

POWER SUPPLY AND GROUND CIRCUIT
EC-785
[VK45DE]
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EC
Revision: 2004 November 2004 FX35/FX45
POWER SUPPLY AND GROUND CIRCUITPFP:24110
Wiring DiagramABS00C07
TBWM0217E

POWER SUPPLY AND GROUND CIRCUIT
EC-787
[VK45DE]
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EC
Revision: 2004 November 2004 FX35/FX45
3. DETECT MALFUNCTIONING PART
Check the following.

Fuse block (J/B) connector M1

15A fuse

Harness for open or short between ECM and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body.
Refer to EC-791, "
Ground Inspection" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace ground connections.
5. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-I
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 1, 115, 116 and ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors F102, M82

Harness for open or short between ECM and ground
>> Repair open circuit or short to power in harness or connectors.
PBIB2195E
Continuity should exist.