POWER DISTRIBUTION SYSTEM : System Description

SYSTEM DIADRAM

Fig 1: Power Distribution System Diagram

Courtesy of NISSAN MOTOR CO., U.S.A.

SYSTEM DESCRIPTION

• PDS (POWER DISTRIBUTION SYSTEM) is the system that BCM controls with the operation of the push-button ignition switch and performs the power distribution to each power circuit. This system is used instead of the mechanical power supply changing mechanism with the operation of the conventional key cylinder.
• The push-button ignition switch can be operated when Intelligent Key is in the following condition.
  • Intelligent Key is in the detection area of the inside key antenna.
  • Intelligent Key backside is contacted to push-button ignition switch.
• The push-button ignition switch operation is input to BCM as a signal. BCM changes the ignition switch position according to the status and operates the following relays to supply power to each power circuit.
  • Ignition relay (IPDM E/R)
  • Ignition relay [fuse block (J/B)]
  • Accessory relay
  • Blower relay
• The ignition switch position can be confirmed with the lighting of the LOCK/ACC/ON indicator lamp in the push-button ignition switch.

BATTERY SAVER SYSTEM

When all the following conditions are met for 60 minutes, the battery saver system will cut off the power supply (ignition switch position ACC → OFF) to prevent battery discharge.

• The ignition switch is in the ACC position
• All doors are closed
• Selector lever is in the P position

Reset Condition of Battery Saver System

If any of the following conditions are met the battery saver system is released.

• Opening any door
• Operating with door request switch on door lock
• Operating with Intelligent Key on door lock
• Change ignition switch position to ACC position from OFF position by pressing push-button ignition switch.

IGNITION SWITCH POSITION CHANGE TABLE BY PUSH-BUTTON IGNITION SWITCH OPERATION

Refer to "INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION : SYSTEM DESCRIPTION ".