Nissan GT-R (2007-2014 year). POWER CONTROL SYSTEM / POWER WINDOW CONTROL SYSTEM. Service Manual

PCS

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

PCS-17

< REMOVAL AND INSTALLATION >

[IPDM E/R]

REMOVAL AND INSTALLATION

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)

Exploded View

INFOID:0000000009163870

Removal and Installation

INFOID:0000000009163871

CAUTION:

IPDM E/R integrated relays are not serviceable parts, and must not be removed from the unit.

REMOVAL

Remove the battery. Refer to

PG-99, "Exploded View"

Remove the cowl top cover (RH). Refer to

EXT-26, "Exploded View"

Pull up the IPDM E/R assembly while pressing the pawls (A) on
the back of the IPDM E/R cover B (1).

IPDM E/R cover A

IPDM E/R

IPDM E/R cover B

Bracket

NNMIA0052ZZ

NNMIA0053ZZ

2014 GT-R

PCS

POWER DISTRIBUTION SYSTEM

PCS-19

< SYSTEM DESCRIPTION >

[POWER DISTRIBUTION SYSTEM]

SYSTEM DESCRIPTION

POWER DISTRIBUTION SYSTEM

System Description

INFOID:0000000009163873

• 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. Refer to

Engine Start Function for details.

- Intelligent Key is in the detection area of the inside key antenna
- Insert Intelligent Key into the key slot
- Insert key fob into the key slot
• The push-button ignition switch operation is input to BCM as a signal. BCM changes the power supply posi-

tion according to the status and operates the following relays to supply power to each power circuit.

- Ignition relay (built into IPDM E/R)
- Ignition relay (inserted into fuse block)
- ACC relay
- Blower relay

NOTE:
The engine switch operation changes due to the conditions of brake pedal, shift lever position and vehicle
speed.

• The power supply position can be confirmed with the illuminating of the indicators around the push-button

ignition switch.

BATTERY SAVER SYSTEM

When all of the following conditions are met for 60 minutes, the battery saver system will cut off the power sup-
ply to prevent battery discharge.
• The ignition switch is in the ACC position
• All doors are closed
• Shift lever is in the P position

Reset Condition of Battery Saver System

In order to prevent the battery from discharging, the battery saver system will cut off the power supply when all
doors are closed, the shift lever is in the P position and the ignition switch is left in the ACC position for 60 min-
utes. If any of the following conditions are met the battery saver system is released and the steering will
change automatically to the LOCK position from the OFF position.
• Opening any door
• Operating with door key cylinder on door lock
• Operating with request switch on door lock
• Operating with Intelligent Key on door lock
Press push-button ignition switch and ignition switch will change to the ACC position from the OFF position.

STEERING LOCK OPERATION

Steering is locked by steering lock unit when ignition switch is in the OFF position, shift lever shift is in the P
position and any of the following conditions are met.
• Opening door
• Closing door
• Door is locked with request switch
• Door is locked with Intelligent Key

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

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 it is inserted to the key

slot, it is equivalent to the operations below.

• When starting the engine, the BCM monitors under the engine start conditions,
- Brake pedal operating condition
- Shift lever position
- Vehicle speed

2014 GT-R

PCS-20

< SYSTEM DESCRIPTION >

[POWER DISTRIBUTION SYSTEM]

POWER DISTRIBUTION SYSTEM

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

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

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.

Power supply position

Engine start/stop condition

Push-button ignition switch

operation frequency

Shift lever position

Brake pedal operation condition

LOCK

→

ACC

—

Not depressed

LOCK

→

ACC

→

—

Not depressed

LOCK

→

ACC

→

OFF

—

Not depressed

LOCK

→

START

ACC

→

START

→

START

P or N position

Depressed

Engine is running

→

OFF

—

Power supply position

Engine start/stop condition

Push-button ignition switch

operation frequency

Shift lever position

Brake pedal operation condition

Engine is running

→

ACC

—

Emergency stop operation

Engine stall return operation while
driving

N position

Not depressed

2014 GT-R

PCS

POWER DISTRIBUTION SYSTEM

PCS-21

< SYSTEM DESCRIPTION >

[POWER DISTRIBUTION SYSTEM]

Component Parts Location

INFOID:0000000009163874

BCM M118, M119, M121, M122,
M123

IPDM E/R E5, E6, F7

Combination meter M53

TCM B45

Push button ignition switch M131

Stop lamp switch E110

Combination meter (Key warning
lamp) M53

Behind the instrument lower panel
(RH)

Engine room dash panel (RH)

View with trunk front finisher re-
moved

View with instrument lower panel
(driver) removed

Located on the conbination meter

JMMIA0023ZZ

2014 GT-R

PCS-22

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

POWER SUPPLY AND GROUND CIRCUIT

DTC/CIRCUIT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

BCM

BCM : Diagnosis Procedure

INFOID:0000000009163902

CHECK FUSE AND FUSIBLE LINK

Check that the following fuse and fusible link are not blown.

Is the fuse fusing?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is

blown.

>> GO TO 2.

CHECK POWER SUPPLY CIRCUIT

Turn ignition switch OFF.

Disconnect BCM connectors.

Check voltage between BCM harness connector and ground.

Is the measurement value normal?

YES

>> GO TO 3.

>> Repair harness or connector.

CHECK GROUND CIRCUIT

Check continuity between BCM harness connector and ground.

Does continuity exist?

YES

>> INSPECTION END

>> Repair harness or connector.

Signal name

Fuse and fusible link No.

Battery power supply

Terminals

Voltage

(Approx.)

(+)

(

−

)

BCM

Ground

Connector

Terminal

M118

Battery voltage

M119

BCM

Ground

Continuity

Connector

Terminal

M119

Existed

2014 GT-R

PCS

PUSH-BUTTON IGNITION SWITCH

PCS-23

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

PUSH-BUTTON IGNITION SWITCH

Description

INFOID:0000000009163903

BCM transmits the change in the power supply position with the push-button ignition switch to IPDM E/R via
the CAN communication line. IPDM E/R transmits the power supply position status via CAN communication
line to BCM.

Diagnosis Procedure

INFOID:0000000009163905

CHECK PUSH-BUTTON IGNITION SWITCH OPERATION

Press push-button ignition switch and check if it turns ON.

Does ignition switch turn ON?

YES

>> GO TO 2.

>> GO TO 4.

CHECK IGNITION SWITCH OUTPUT SIGNAL (IPDM E/R)

Turn ignition switch OFF.

Disconnect push-button ignition switch connector and BCM connector.

Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

>> GO TO 3.

CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (IPDM E/R)

Disconnect IPDM E/R connector.

Check continuity between IPDM E/R harness connector and BCM harness connector.

Check continuity between IPDM E/R harness connector and ground.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to

PCS-17, "Removal and Installation"

>> Repair or replace harness.

CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT (BCM)

Check continuity between BCM harness connector and push-button ignition switch harness connector.

Check continuity between BCM harness connector and ground.

(+)

(–)

Voltage (V)

(Approx.)

BCM

Connector

Terminal

M122

Ground

Battery voltage

IPDM E/R

BCM

Continuity

Connector

Terminal

Connector

Terminal

M122

Existed

IPDM E/R

Ground

Continuity

Connector

Terminal

Not existed

BCM

Push-button ignition switch

Continuity

Connector

Terminal

Connector

Terminal

M122

M131

Existed

2014 GT-R

PCS-24

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

PUSH-BUTTON IGNITION SWITCH

Is the inspection result normal?

YES

>> GO TO 5.

>> Repair or replace harness.

CHECK PUSH-BUTTON IGNITION GROUND CIRCUIT

Check continuity between push-button ignition switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

>> Repair or replace harness.

CHECK PUSH-BUTTON IGNITION SWITCH

Check push-button ignition switch. Refer to

PCS-24, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 7.

>> Replace push button ignition switch. Refer to

PCS-31, "Removal and Installation"

CHECK INTERMITTENT INCIDENT

Refer to

GI-38, "Intermittent Incident"

>> INSPECTION END

Component Inspection

INFOID:0000000009163906

CHECK PUSH-BUTTON IGNITION SWITCH

Turn ignition switch OFF.

Disconnect push-button ignition switch connector.

Check continuity between push-button ignition switch terminals.

Is the inspection result normal?

YES

>> INSPECTION END

>> Replace push-button ignition switch. Refer to

PCS-31, "Removal and Installation"

BCM

Ground

Continuity

Connector

Terminal

M122

Not existed

Push-button ignition switch

Ground

Continuity

Connector

Terminal

M131

Existed

Push-button ignition switch

Condition

Continuity

Terminal

Push-button ignition

switch

Pressed

Existed

Not pressed

Not existed

2014 GT-R

PCS

PUSH-BUTTON IGNITION SWITCH POSITION INDICATOR

PCS-25

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

PUSH-BUTTON IGNITION SWITCH POSITION INDICATOR

Description

INFOID:0000000009163907

The switch that changes the power supply position.
BCM maintains the power supply position status.
BCM changes the power supply position with the operation of the push-button ignition switch.

Diagnosis Procedure

INFOID:0000000009163909

CHECK PUSH-BUTTON IGNITION SWITCH INPUT SIGNAL

Turn ignition switch OFF.

Disconnect push-button ignition switch connector.

Check voltage between push-button ignition switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

>> Check 10 A fuse [No.11, located in fuse block (J/B)] and harness for open or short between push-

button ignition switch and fuse.

CHECK BCM INPUT

Connect push-button ignition switch connector.

Disconnect BCM connector.

Check voltage between BCM connector and ground.

Is the inspection normal?

YES

>> Replace BCM. Refer to

BCS-20, "Removal and Installation"

>> GO TO 3.

CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT

Disconnect push-button ignition switch connector.

Check continuity between BCM harness connector and push-button ignition switch harness connector.

Check continuity between BCM harness connector and ground.

(+)

(–)

Voltage (V)

(Approx.)

Push-button ignition switch

Connector

Terminal

M131

Ground

Battery voltage

(+)

(–)

Voltage (V)

(Approx.)

BCM

Connector

Terminal

M119

Ground

Battery voltage

M122

M123

134

Indicator

BCM

Push-button ignition switch

Continuity

Connector

Terminal

Connector

Terminal

LOCK

M123

134

M131

Existed

ACC

M119

M122

2014 GT-R

PCS-26

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

PUSH-BUTTON IGNITION SWITCH POSITION INDICATOR

Is the inspection result normal?

YES

>> Replace push-button ignition switch. Refer to

PCS-31, "Removal and Installation"

>> Repair or replace harness.

Indicator

BCM

Ground

Continuity

Connector

Terminal

LOCK

M123

134

Not existed

ACC

M119

M122

2014 GT-R

PCS

POWER DISTRIBUTION SYSTEM

PCS-27

< DTC/CIRCUIT DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

POWER DISTRIBUTION SYSTEM

Wiring Diagram - PDS (POWER DISTRIBUTION SYSTEM) -

INFOID:0000000009163910

For connector terminal arrangements, harness layouts, and alphabets in a

(option abbreviation; if not

described in wiring diagram), refer to

GI-12, "Connector Information"

JCMWA3870GB

2014 GT-R

PCS

PRECAUTIONS

PCS-29

< PRECAUTION >

[POWER DISTRIBUTION SYSTEM]

PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"

INFOID:0000000009163916

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.

WARNING:

Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see “SRS AIR BAG”.

• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-

vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with
a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.

• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

Precaution for Procedure without Cowl Top Cover

INFOID:0000000009163917

When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc to prevent damage to
windshield.

Precautions Necessary for Steering Wheel Rotation After Battery Disconnection

INFOID:0000000009163918

CAUTION:

Comply with the following cautions to prevent any error and malfunction.
• Before removing and installing any control units, first turn the ignition switch to the LOCK position,

then disconnect both battery cables.

• After finishing work, confirm that all control unit connectors are connected properly, then re-connect

both battery cables.

• Always use CONSULT to perform self-diagnosis as a part of each function inspection after finishing

work. If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.

PIIB3706J

2014 GT-R

PCS-30

< PRECAUTION >

[POWER DISTRIBUTION SYSTEM]

PRECAUTIONS

For vehicle with steering lock unit, if the battery is disconnected or discharged, the steering wheel will lock and
cannot be turned.
If turning the steering wheel is required with the battery disconnected or discharged, follow the operation pro-
cedure below before starting the repair operation.

OPERATION PROCEDURE

Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.

Turn the ignition switch to ACC position.
(At this time, the steering lock will be released.)

Disconnect both battery cables. The steering lock will remain released with both battery cables discon-
nected and the steering wheel can be turned.

Perform the necessary repair operation.

When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the ignition switch from ACC position to ON position, then to LOCK position. (The steering wheel will lock
when the ignition switch is turned to LOCK position.)

Perform self-diagnosis check of all control units using CONSULT.

Precaution for Battery Service

INFOID:0000000009163919

Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.

2014 GT-R

PCS

PUSH-BUTTON IGNITION SWITCH

PCS-31

< REMOVAL AND INSTALLATION >

[POWER DISTRIBUTION SYSTEM]

REMOVAL AND INSTALLATION

PUSH-BUTTON IGNITION SWITCH

Removal and Installation

INFOID:0000000009163923

REMOVAL

Remove control device. Refer to

TM-16, "Removal and Installation"

Disconnect push-button ignition switch connector (2).

Remove the push-button ignition switch fixing pawl, and then remove push-button ignition switch (1).

INSTALLATION

Install in the reverse order of removal.

: Pawl

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2014 GT-R

Nissan GT-R (2007-2014 year). POWER CONTROL SYSTEM / POWER WINDOW CONTROL SYSTEM. Service Manual - part 2