System Description

SYSTEM DIAGRAM

Courtesy of NISSAN

Signal transmission function list

Signal name	Input	Output	Description
Detent switch signal	CVT shift selector (detent switch)	Intelligent Key unit	Transmit the detent switch signal to the Intelligent Key unit.
Stop lamp switch signal	Stop lamp switch	BCM	Transmits the stop lamp switch signal to the BCM.
Push-button ignition switch signal	Push-button ignition switch	Intelligent Key unit IPDM E/R	Transmits the push-button ignition switch signal to the Intelligent Key unit and IPDM E/R.
P/N position signal	Transmission range switch	IPDM E/R	Transmits the P/N position signal to the IPDM E/R.

SYSTEM DESCRIPTION

PDS (POWER DISTRIBUTION SYSTEM) is the system that the Intelligent Key unit and BCM control with the operation of the push-button ignition switch to perform 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 conditions:
- 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 Intelligent Key unit as a signal. Intelligent Key unit changes the power supply position according to the status and operates the following relays to supply power to each power circuit:
- Ignition relay-1 (IPDM E/R)
- Ignition relay-2 [Fuse block (J/B) ]
- Accessory relay-1 [Fuse block (J/B) ]
- Blower motor relay [Fuse block (J/B) ]
  NOTE: The engine switch operation changes due to the conditions of brake pedal, selector lever and vehicle speed.
The power supply position can be confirmed with the lighting of the indicator in the push-button ignition switch.

IGNITION BATTERY SAVER SYSTEM

When all the following conditions are met for a period of time, the ignition battery saver system will cut off the power supply to prevent battery discharge:

The push-button ignition switch is in ON
Turn signal lamp is not in operation
Selector lever is in the P (park) position

Reset Condition of Ignition Battery Saver System

In order to prevent the battery from discharging, the ignition battery saver system will cut off the power supply when all doors are closed, the selector lever is in P (park) position and the push-button ignition switch is left ON for 10 minutes that can be extended for not more than 30 minutes:

Opening any door
Operating door request switch on door handle
Operating Intelligent Key

NOTE:

the ignition battery saver system can be temporarily disabled, without using CONSULT, to prevent it from functioning when performing trouble diagnosis. Refer to
Work Procedure .

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

The power supply position changing operation can be performed with the following operations:

NOTE:

When an Intelligent Key is within the detection area of inside key antenna and when Intelligent Key backside is contacted to push-button ignition switch, it is equivalent to the operations below.
When starting the engine, the Intelligent Key unit monitors under the engine start conditions:
- Brake pedal operating condition
- Selector lever position
- Vehicle speed

Vehicle speed: less than 2.5 MPH (4 km/h)

Power supply position	Engine start/stop condition		Push-buttonignition switchoperation frequency
Power supply position	Selector lever position	Brake pedal condition	Push-buttonignition switchoperation frequency
OFF -> ON	-	Released	1
OFF -> ON -> OFF	-	Released	2
OFF -> STARTON -> START	P (Park) or N (Neutral)	Depressed	1
Engine is running -> OFF	-	-	1

Vehicle speed: 2.5 MPH (4 km/h) or more

Power supply position	Engine start/stop condition		Push-buttonignition switchoperation frequency
Power supply position	Selector lever position	Brake pedal condition	Push-buttonignition switchoperation frequency
Engine is running -> OFF	-	-	Emergency stopoperation
Engine stall return operation while driving	N (Neutral)	Released	1

Emergency stop operation

Press and hold the push-button ignition switch for 2 seconds or more.
Press the push-button ignition switch 3 times or more within 1.5 seconds.