Infiniti FX35 / FX45. Manual - part 906

SC-12

< SERVICE INFORMATION >

STARTING SYSTEM

1.

Remove fuel pump fuse.

2.

Crank or start the engine (where possible) until the fuel pressure is released.

1.

CHECK “B” TERMINAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Make sure that starter motor “B” terminal E313 terminal 2 connection is clean and tight.

3.

Check voltage between starter motor “B” terminal E313 terminal
2 and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Check harness between battery and starter motor for

open circuit.

2.

CHECK BATTERY CABLE CONNECTION STATUS (VOLTAGE DROP TEST)

1.

Shift A/T selector lever to “P” or “N” position.

2.

Check voltage between starter motor “B” terminal E313 terminal
2 and battery positive terminal.

OK or NG

OK

>> GO TO 3.

NG

>> Check harness between battery and starter motor for

poor continuity.

3.

CHECK GROUND CIRCUIT STATUS (VOLTAGE DROP TEST)

1.

Turn ignition switch OFF.

2.

Shift A/T selector lever to “P” or “N” position.

3.

Check voltage between starter motor case and battery negative
terminal.

OK or NG

OK

>> “B” terminal circuit is OK. Further inspection necessary.

Refer to 

SC-10, "Trouble Diagnosis with Starting/Charg-

ing System Tester (Starting)"

.

NG

>> Check starter motor case and ground for poor continuity.

DIAGNOSTIC PROCEDURE 2

Check “S” Connector Circuit

CAUTION:

Perform diagnosis under the condition that engine cannot start by the following procedure.
1.

Remove fuel pump fuse.

2.

Crank or start the engine (where possible) until the fuel pressure is released.

1.

CHECK “S” CONNECTOR CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect starter motor connector.

3.

Shift A/T selector lever to “P” or “N” position.

2 – Ground

: Battery voltage

PKIB8793E

2 – Battery positive terminal

When ignition switch is in START 
position

: Less than 0.5 V

PKIB8794E

Starter motor case – Battery negative terminal

When ignition switch is in 
START position

: Less than 0.2 V

PKIB8795E

STARTING SYSTEM

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< SERVICE INFORMATION >

C

D

E

F

G

H

I

J

L

M

A

B

SC

N

O

P

4.

Check voltage between starter motor harness connector E312
(VK45DE) or F33 (VQ35DE) terminal 1 and ground.

OK or NG

OK

>> “S” connector circuit is OK. Further inspection neces-

sary. Refer to 

SC-10, "Trouble Diagnosis with Starting/

Charging System Tester (Starting)"

.

NG

>>

Check the following.

• 40A fusible link (letter F, located in fuse and fusible link box)
• Ignition switch
• Starter relay (within the IPDM E/R)
• Harness for open or short

MINIMUM SPECIFICATION OF CRANKING VOLTAGE REFERENCING COOLANT TEMPERA-
TURE

Removal and Installation (VK45DE Engine Models)

INFOID:0000000001328249

REMOVAL

1.

Disconnect the battery cable from the negative terminal.   

2.

Remove engine front and rear undercover, using power tools.

1 – Ground

When  ignition switch is in 
START position

: Battery voltage

PKIB8796E

Engine coolant temperature

Voltage [V]

−

30

°

C to 

−

20

°

C (

−

22

°

F to 

−

4

°

F)

8.4

−

19

°

C to 

−

10

°

C (

−

2

°

F to 14

°

F)

8.9

−

9

°

C to 0

°

C (16

°

F to 32

°

F)

9.3

More than 1

°

C (More than 34

°

F)

9.7

1.

Starter motor

2.

Starter motor mounting bolt

3.

B terminal harness

4.

B terminal nut

5.

S connector

6.

Cylinder block

: N·m (kg-m, ft-lb)

: N·m (kg-m, ft-in)

: Engine front

PKID1545E

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< SERVICE INFORMATION >

STARTING SYSTEM

3.

Disconnect “S” connector.

4.

Remove “B” terminal nut.

5.

Remove starter motor mounting bolts.

6.

Loosen A/T fluid cooler tube clip bolts. Refer to 

AT-243,

"Removal and Installation (AWD Models)"

.

7.

Remove starter motor downward from the vehicle.

INSTALLATION

Installation is the reverse order of removal.

CAUTION:

Be sure to tighten “B” terminal nut carefully.

Removal and Installation [VQ35DE Engine Models (2WD)]

INFOID:0000000001328250

REMOVAL

1.

Disconnect the battery cable from the negative terminal.

2.

Remove engine rear undercover, using power tools.

3.

Disconnect “S” connector.

4.

Remove “B” terminal nut.

5.

Remove starter motor mounting bolts and harness clip bracket,
using power tools.

6.

Remove starter motor downward from the vehicle.

PKIA2810E

1.

Starter motor mounting bolt

2.

Harness clip bracket

3.

S connector

4.

B terminal nut

5.

B terminal harness

6.

Starter motor

7.

Oil pan

: N·m (kg-m, ft-lb)

: N·m (kg-m, ft-in)

: Engine front

PKIB8799E

PKIA2812E

STARTING SYSTEM

SC-15

< SERVICE INFORMATION >

C

D

E

F

G

H

I

J

L

M

A

B

SC

N

O

P

INSTALLATION

Installation is the reverse order of removal.

CAUTION:

Be sure to tighten “B” terminal nut carefully.

Removal and Installation [VQ35DE Engine Models (AWD)]

INFOID:0000000001328251

REMOVAL

1.

Disconnect the battery cable from the negative terminal.

2.

Remove engine front and rear undercover, using power tools.

3.

Disconnect “S” connector.

4.

Remove “B” terminal nut.

5.

Remove starter motor mounting bolts.

6.

Remove starter motor downward from the vehicle.

INSTALLATION

Installation is the reverse order of removal.

CAUTION:

Be sure to tighten “B” terminal nut carefully.

Disassembly and Assembly

INFOID:0000000001328252

VK45DE ENGINE MODELS (M002T85075)

1.

Starter motor mounting bolt

2.

Oil pan

3.

Starter motor

4.

B terminal harness

5.

B terminal nut

6.

S connector

: N·m (kg-m, ft-lb)

: N·m (kg-m, ft-in)

: Engine front

PKID1546E

PKIA2844E