Infiniti FX35 / FX45. Manual - part 905

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STARTING SYSTEM

STARTING SYSTEM

System Description

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Power is supplied at all times
• through 40A fusible link (letter F, located in the fuse and fusible link block)
• to ignition switch terminal 1,
• through 15A fuse (No. 78, located in the IPDM E/R)
• to CPU of IPDM E/R,
• through 10A fuse (No. 71, located in the IPDM E/R)
• to CPU of IPDM E/R.
When the selector lever in the P or N position, power is supplied
• from TCM, and through A/T assembly terminal 9
• to IPDM E/R terminal 53.
Ground is supplied
• to IPDM E/R terminals 38, 50 and 60
• from grounds E21, E50 and E51.
With the ignition switch in the START position, and provided that the IPDM E/R receives a starter relay ON sig-
nal from the CAN lines, the IPDM E/R is energized and power is supplied
• from ignition switch terminal 5
• to IPDM E/R terminal 4 and
• through IPDM E/R terminal 3
• to starter motor terminal 1.
The starter motor plunger closes and provides a closed circuit between the battery and starter motor. The
starter motor is grounded to the engine block. With power and ground supplied, cranking occurs and the
engine starts. 

STARTING SYSTEM

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Wiring Diagram - START -

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VK45DE ENGINE MODELS

TKWM1275E

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STARTING SYSTEM

VQ35DE ENGINE MODELS

Trouble Diagnosis with Starting/Charging System Tester (Starting)

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For starting system testing, use Starting/Charging System Tester (J-44373). For details and operating instruc-
tions, refer to Technical Service Bulletin.

TKWM1276E

STARTING SYSTEM

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DIAGNOSTIC PROCEDURE 1

Check “B” Terminal Circuit

CAUTION:

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

*1

For battery testing, use Battery Ser-
vice Center (J-48087). For details 
and operating instructions, refer to 
Technical Service Bulletin and/or Bat-
tery Service Center User Guide.

*2

Refer to "MINIMUM SPECIFICA-
TION OF CRANKING VOLTAGE 
REFERENCING COOLANT TEM-
PERATURE".

*3

Refer to "Check “B” Terminal Circuit".

*4

Refer to "Check “S” Connector Cir-
cuit".

SKIB1369E