Nissan Qashqai J11. Manual - part 1950

PCS-72

< SYSTEM DESCRIPTION >

[POWER DISTRIBUTION SYSTEM]

COMPONENT PARTS

SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

INFOID:0000000010434039

JMMIA1776ZZ

No.

Component

Description

CVT shift selector (deten-
tion switch) (CVT models)

CVT shift selector (detention switch) detects shift lever status, transmits detention switch signal to 
BCM.
Refer to 

TM-430, "CVT CONTROL SYSTEM : Component Parts Location"

 for detailed installation 

location.

Push-button ignition 
switch

Refer to 

PCS-73, "Push-button Ignition Switch"

.

Stop lamp switch

Stop lamp switch detects that brake pedal is depressed, and transmits the signal to BCM.
Refer to 

BRC-8, "Component Parts Location"

.

TCM

Transmits shif position signal to BCM via CAN communication line.
Refer to 

TM-430, "CVT CONTROL SYSTEM : Component Parts Location"

.

PCS

COMPONENT PARTS

PCS-73

< SYSTEM DESCRIPTION >

[POWER DISTRIBUTION SYSTEM]

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Push-button Ignition Switch

INFOID:0000000010434040

Push-button ignition switch is pressed, and transmits the status sig-
nal to BCM and IPDM E/R.

IPDM E/R

IPDM E/R detects push-button ignition switch (push switch) status, and transmits push-button igni-
tion switch status signal (CAN) to BCM.
Refer to 

PCS-5, "Component Parts Location"

 for detailed installation location.

BCM

• BCM controls power distribution system.
• BCM judges ignition switch position by push-button ignition switch (push switch) and vehicle con-

dition

• BCM checks the ignition switch position internally.
Refer to 

BCS-7, "BODY CONTROL SYSTEM : Component Parts Location"

 for detailed installation 

location.

Key switch

Key switch detects that ignition key is inserted into the ignition key cylinder, and then transmits the 
signal to BCM.

Door request switch

Door request switch detects door lock/unlock operation and transmits door request switch signal to 
BCM

Door switch

Detects door open/close condition.

No.

Component

Description

JMMIA1374ZZ

PCS-74

< SYSTEM DESCRIPTION >

[POWER DISTRIBUTION SYSTEM]

SYSTEM

SYSTEM

POWER DISTRIBUTION SYSTEM

POWER DISTRIBUTION SYSTEM : System Description

INFOID:0000000010434041

SYSTEM DIADRAM

SYSTEM DESCRIPTION

• POWER DISTRIBUTION SYSTEM is the system that BCM controls with the operation of push-button igni-

tion 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.

• 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.
• 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 ACC/ON indicator lamp in push-button

ignition switch.

IGNITION BATTERY SAVER SYSTEM

When all the following conditions are met for 10 minutes, the battery saver system will cut off the power supply
(ignition switch position ACC/ON 

→

 OFF) to prevent battery discharge.

• Ignition switch is in the ACC/ON position
• Turn signal lamp is not in operation
• Selector lever is in the P position (A/T models)
NOTE:
For one minute after thirty minutes have passed or three minutes after twenty-seven minutes are passed, the
following display is indicated on information display in combination meter and sounds buzzer in combination
meter.

Reset Condition of Ignition Battery Saver System

If any of the following conditions are met the battery saver system is released.
• Ignition switch is not in the ACC/ON position.

JMMIA1781GB

Combination meter

Time

Information display

Buzzer

Power turned off to save the battery

Pipi-Pipi

 (two seconds)

For one minute after thirty minutes have passed

three minutes after twenty-seven minutes are passed

PCS

SYSTEM

PCS-75

< SYSTEM DESCRIPTION >

[POWER DISTRIBUTION SYSTEM]

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• Turn signal lamp is operation.
• Selector lever is not in the P position.
NOTE:
The ignition battery saver system can be temporarily disabled, without using CONSULT, to prevent it from
functioning when performing trouble diagnosis. Refer to 

PCS-107, "Work Procedure"

.

IGNITION SWITCH POSITION CHANGE TABLE BY PUSH-BUTTON IGNITION SWITCH OPERA-
TION

Refer to 

PCS-75, "AUTO ACC FUNCTION : System Description"

.

AUTO ACC FUNCTION

AUTO ACC FUNCTION : System Description

INFOID:0000000010507066

SYSTEM DIAGRAM

MODELS WITH INTELLIGENT KEY SYSTEM

MODELS WITHOUT INTELLIGENT KEY SYSTEM

DESCRIPTION

In conventional vehicles, power is supplied to the accessories of the vehicle after the ignition switch is turned
to the ACC position.
The AUTO ACC function is a function that bypasses the ignition switch ACC position and automatically distrib-
utes the accessory power supply to each switch and unit by door unlock operation, etc. using the Intelligent
Key (models with Intelligent Key) or the remote controller key (models without Intelligent Key).

JMMIA1782GB

JMMIA1783GB