Infiniti FX35 / FX45. Manual - part 909

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< SERVICE INFORMATION >

CHARGING SYSTEM

Check “L” Terminal Circuit (Short)

1.

CHECK “L” TERMINAL CIRCUIT (SHORT)

1.

Turn ignition switch OFF.

2.

Disconnect alternator connector.

3.

Turn ignition switch ON.

Charge warning lamp should light up?

YES

>>

Check the following.

• Harness for short between combination meter and alternator
• Charge warning lamp (Combination meter)

NO

>> Go to 

SC-21, "Trouble Diagnosis with Starting/Charging System Tester (Charging)"

.

DIAGNOSTIC PROCEDURE 3

Check “S” Terminal Circuit

1.

CHECK “S” TERMINAL CONNECTION

1.

Turn ignition switch OFF.

2.

Check if “S” terminal is clean and tight.

OK or NG

OK

>> GO TO 2.

NG

>> Repair “S” terminal connection. Confirm repair by performing complete Starting/Charging system

test. Refer to Technical Service Bulletin.

2.

CHECK “S” TERMINAL CIRCUIT

1.

Disconnect alternator connector.

2.

Check voltage between alternator harness connector E311
(VK45DE) or F26 (VQ35DE) terminal 4 and ground.

OK or NG

OK

>> Go to 

SC-21, "Trouble Diagnosis with Starting/Charging

System Tester (Charging)"

.

NG

>> Harness for open between alternator and fuse.

DIAGNOSTIC PROCEDURE 4

Check “B” Terminal Circuit

1.

CHECK “B” TERMINAL CONNECTION

1.

Turn ignition switch OFF.

2.

Check if “B” terminal is clean and tight.

OK or NG

OK

>> GO TO 2.

NG

>> Repair “B” terminal connection. Confirm repair by performing complete Starting/Charging system

test. Refer to Technical Service Bulletin.

2.

CHECK “B” TERMINAL CIRCUIT

4 – Ground

: Battery voltage

SKIB8494E

CHARGING SYSTEM

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< SERVICE INFORMATION >

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Check voltage between alternator “B” terminal E307 terminal 1 and
ground.

OK or NG

OK

>> GO TO 3.

NG

>>

Check the following.

• Harness for open between alternator and fusible link

(VK45DE and VQ35DE AWD)

• Harness for open between alternator and battery

(VQ35DE 2WD)

3.

CHECK “B” TERMINAL CONNECTION (VOLTAGE DROP TEST)

1.

Start engine, then engine running at idle and warm.

2.

Check voltage between alternator “B” terminal E307 terminal 1
and battery positive terminal.

OK or NG

OK

>> Go to 

SC-21, "Trouble Diagnosis with Starting/Charging

System Tester (Charging)"

.

NG

>> Check harness between battery and alternator for poor

continuity.

Removal and Installation (VK45DE Engine Models)

INFOID:0000000001328257

REMOVAL

1.

Disconnect the battery cable from the negative terminal.

2.

Remove engine front undercover, using power tools. 

3.

Remove radiator shroud (lower). Refer to 

CO-40, "Removal and Installation"

.

1 – Ground

: Battery voltage

PKIB8809E

1 – Battery positive terminal

: Less than 0.2 V

PKIB8810E

1.

Alternator ground harness mounting bolt

2.

B terminal nut

3.

B terminal harness

4.

Alternator Nut

5.

Alternator bracket

6.

Alternator connector

7.

Alternator

8.

Alternator mounting bolt

9.

Alternator stay

10. Alternator mounting bolt

11.

Alternator stay mounting bolt

12. Alternator ground harness

: N·m (kg-m, in-lb)

: N·m (kg-m, ft-lb)

: Engine front

SKIB7209E

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< SERVICE INFORMATION >

CHARGING SYSTEM

4.

Remove alternator, water pump and A/C compressor belt. Refer to 

EM-170, "Removal and Installation"

.

5.

Remove alternator mounting bolts, using power tools.

6.

Disconnect alternator connector.

7.

Remove “B” terminal nut.

8.

Remove alternator ground harness mounting bolt.

9.

Remove alternator assembly downward from the vehicle.

ALTERNATOR PULLEY INSPECTION

Perform the following.
• Make sure that alternator pulley does not rattle.
• Make sure that alternator pulley nut is tight.

INSTALLATION

Installation is the reverse order of removal.

• Install alternator, and check tension of belt. Refer to 

EM-170, "Checking Drive Belts"

.

CAUTION:

Be sure to tighten “B” terminal nut carefully.

PKIA2954E

PKIA2820E

Alternator pulley nut:

: 73.5 N·m (7.5 kg-m, 54 ft-lb)

CHARGING SYSTEM

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< SERVICE INFORMATION >

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Removal and Installation (VQ35DE Engine Models)

INFOID:0000000001328258

REMOVAL

1.

Disconnect the battery cable from the negative terminal.

2.

Remove engine front undercover, using power tools. 

3.

Remove alternator and power steering oil pump belt. Refer to 

EM-15, "Removal and Installation"

. 

4.

Disconnect alternator connector.

5.

Remove “B” terminal nut.

6.

Remove harness clip and water hose bracket from alternator.

7.

Remove oil pressure switch harness clip from alternator stay.
(2WD)

8.

Disconnect oil pressure switch connector. (2WD)

9.

Remove alternator stay mounting bolts and alternator stay, using
power tools.

10. Remove alternator mounting bolt, using power tools.
11. Remove alternator assembly downward from the vehicle.

ALTERNATOR PULLEY INSPECTION

Perform the following.
• Make sure that alternator pulley does not rattle.

1.

B terminal nut

2.

B terminal harness

3.

Alternator connector

4.

Alternator mounting bolt

5.

Alternator stay mounting bolt

6.

Alternator stay

7.

Alternator

: N·m (kg-m, ft-lb)

: Engine front

PKIB8815E

PKIA2358E

PKIA1923E