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Home >> Infiniti >> 2003 >> QX4 4WD >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery >> Starting System >> System Description

System Description

Power is supplied at all times

With the ignition switch in the ON or START position, power is supplied through 10A fuse [No. 18, located in the fuse block (J/B)].

Also, with the ignition switch in the START position, power is supplied

With the selector lever in the P or N position, ground is supplied

Then park/neutral position relay is energized and power is supplied

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.