Nissan GT-R (2007-2014 year). POWER CONTROL SYSTEM / POWER WINDOW CONTROL SYSTEM. Service Manual — part 1

IPDM E/R activates the internal control circuit to perform the relay ON-OFF control according to the input sig-
nals from various sensors and the request signals received from control units via CAN communication.

CAUTION:

IPDM E/R integrated relays cannot be removed.

NNMIB0004GB

2014 GT-R

PCS-4

< SYSTEM DESCRIPTION >

[IPDM E/R]

RELAY CONTROL SYSTEM

NOTE:

BCM controls the starter relay.

Component Parts Location

INFOID:0000000009163843

Control relay

Input/output

Transmit unit

Control part

Reference

page

• Headlamp low relay
• Headlamp high relay

• Low beam request signal
• High beam request signal

BCM (CAN)

• Headlamp low
• Headlamp high

EXL-3

Tail lamp relay

Position light request signal

BCM (CAN)

• Parking lamp
• Side marker lamp
• License plate lamp
• Tail lamp

EXL-11

Illuminations

INL-9

• Front wiper relay
• Front wiper high relay

Front wiper request signal

BCM (CAN)

Front wiper

WW-2

Front wiper stop position sig-
nal

Front wiper motor

• Horn relay 1
• Horn relay 2

• Theft warning horn request

signal

• Horn reminder signal

BCM (CAN)

• Horn (low)
• Horn (high)

SEC-12

• Starter relay

NOTE

• Starter control relay

Starter control relay signal

BCM (CAN)

Starter motor

SEC-4

Steering lock unit condition
signal

Steering lock unit

Starter relay control signal

TCM

Steering lock relay

Steering lock relay signal

BCM (CAN)

Steering lock unit

SEC-4

Steering lock unit condition
signal

Steering lock unit

A/T shift selector (Detention
switch) signal

A/T shift selector
(Detention switch)

A/C relay

A/C compressor request sig-
nal

ECM (CAN)

A/C compressor
(Magnet clutch)

HAC-19

Ignition relay

Ignition switch ON signal

BCM (CAN)

Ignition relay

—

Vehicle speed signal

Combination meter (CAN)

Push-button ignition switch
signal

Push-button ignition switch

Daytime running light relay

Daytime running light request
signal

BCM (CAN)

Headlamp high
(High beam at approxi-
mately half illumination)

EXL-7

NNMIA0048ZZ

2014 GT-R

PCS

RELAY CONTROL SYSTEM

PCS-5

< SYSTEM DESCRIPTION >

[IPDM E/R]

IPDM E/R

Engine room dash panel (RH)

2014 GT-R

PCS-6

< SYSTEM DESCRIPTION >

[IPDM E/R]

SIGNAL BUFFER SYSTEM

SIGNAL BUFFER SYSTEM

System Diagram

INFOID:0000000009163846

System Description

INFOID:0000000009163847

• IPDM E/R reads the status of the hood switch and transmits the hood switch signal to BCM via CAN commu-

nication. Refer to

SEC-18, "Description"

• IPDM E/R receives the rear window defogger control signal from BCM via CAN communication and trans-

mits it to ECM and AV control unit via CAN communication. Refer to

DEF-3, "System Diagram"

NNMIA0050GB

2014 GT-R

PCS

POWER CONSUMPTION CONTROL SYSTEM

PCS-7

< SYSTEM DESCRIPTION >

[IPDM E/R]

POWER CONSUMPTION CONTROL SYSTEM

System Diagram

INFOID:0000000009163848

System Description

INFOID:0000000009163849

OUTLINE

• IPDM E/R incorporates a power consumption control function that reduces the power consumption accord-

ing to the vehicle status.

• IPDM E/R changes its status (control mode) with the sleep wake up signal received from BCM via CAN com-

munication.

Normal mode (wake-up)

- CAN communication is normally performed with other control units.
- Individual unit control by IPDM E/R is normally performed.

Low power consumption mode (sleep)

- Low power consumption control is active.
- CAN transmission is stopped.

SLEEP MODE ACTIVATION

• IPDM E/R judges that the sleep-ready conditions are fulfilled when the ignition switch is OFF and none of the

conditions below are present. Then it transmits a sleep-ready signal (ready) to BCM via CAN communica-
tion.

- Outputting signals to actuators
- Switches or relays operating
- Hood switch status is kept 50 ms or less.
- Output requests are being received from control units via CAN communication.
• IPDM E/R stops CAN communication and enters the low power consumption mode when it receives a sleep

wake up signal (sleep) from BCM and the sleep-ready conditions are fulfilled.

WAKE-UP OPERATION

• IPDM E/R changes from the low power consumption mode to the normal mode when it receives a sleep

wake-up signal (wake up) from BCM or any of the following conditions is fulfilled. In addition, it transmits a
sleep-ready signal (not-ready) to BCM via CAN communication to report the CAN communication start.

- Ignition switch ON
- The hood switch status changes.
- An output request is received from a control unit via CAN communication.

JSMIA0050GB

2014 GT-R

PCS-8

< SYSTEM DESCRIPTION >

[IPDM E/R]

POWER CONSUMPTION CONTROL SYSTEM

Component Parts Location

INFOID:0000000009163850

Combination meter

BCM

IPDM E/R

Dash side lower (passenger side)

Engine room dash panel (RH)

JPMIA1144ZZ

2014 GT-R

PCS

DIAGNOSIS SYSTEM (IPDM E/R)

PCS-9

< SYSTEM DESCRIPTION >

[IPDM E/R]

DIAGNOSIS SYSTEM (IPDM E/R)

Diagnosis Description

INFOID:0000000009163851

AUTO ACTIVE TEST

Description

In auto active test mode, the IPDM E/R sends a drive signal to the following systems to check their operation.
• Front wiper (LO, HI)
• Parking lamps
• License plate lamps
• Side marker lamps
• Tail lamps
• Headlamps (LO, HI)
• A/C compressor (magnet clutch)
• Cooling fan (cooling fan control module)

Operation Procedure

Close the hood and lift the wiper arms from the windshield. (Prevent windshield damage due to wiper
operation)
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield beforehand.

Turn the ignition switch OFF.

Turn the ignition switch ON, and within 20 seconds, press the driver door switch 10 times. Then turn the
ignition switch OFF.

CAUTION:

Close passenger door.

Turn the ignition switch ON within 10 seconds. After that the horn sounds once and the auto active test
starts.

After a series of the following operations is repeated 3 times, auto active test is completed.

NOTE:
When auto active test mode has to be cancelled halfway through test, turn the ignition switch OFF.

CAUTION:

• If auto active test mode cannot be actuated, check door switch system. Refer to

DLK-44,

"Component Function Check"

• Do not start the engine.

Inspection in Auto Active Test Mode

When auto active test mode is actuated, the following 5 steps are repeated 3 times.

*: Outputs duty ratio of 50% for 5 seconds

→

duty ratio of 100% for 5 seconds on the cooling fan control module.

Operation
sequence

Inspection location

Operation

Front wiper

LO for 5 seconds

→

HI for 5 seconds

• Parking lamps
• License plate lamps
• Side marker lamps
• Tail lamps

10 seconds

Headlamps

⇔

HI 5 times

A/C compressor (magnet clutch)

⇔

OFF 5 times

Cooling fan

MID for 5 seconds

→

HI for 5 seconds

2014 GT-R

PCS-10

< SYSTEM DESCRIPTION >

[IPDM E/R]

DIAGNOSIS SYSTEM (IPDM E/R)

Concept of auto active test

• IPDM E/R starts the auto active test with the door switch signals transmitted by BCM via CAN communica-

tion. Therefore, the CAN communication line between IPDM E/R and BCM is considered normal if the auto
active test starts successfully.

• The auto active test facilitates troubleshooting if any systems controlled by IPDM E/R cannot be operated.

Diagnosis chart in auto active test mode

NNMIA0051GB

Symptom

Inspection contents

Possible cause

Any of the following components do not operate

• Parking lamps
• License plate lamps
• Side marker lamps
• Tail lamps
• Headlamp (HI, LO)
• Front wiper (HI, LO)

Perform auto active test.
Does the applicable system
operate?

YES

BCM signal input circuit

• Lamp or motor
• Lamp or motor ground circuit
• Harness or connector be-

tween IPDM E/R and appli-
cable system

• IPDM E/R

A/C compressor does not operate

Perform auto active test.
Does the magnet clutch oper-
ate?

YES

• A/C amp. signal input circuit
• CAN communication signal

between A/C amp. and ECM

• CAN communication signal

between ECM and IPDM E/R

• Magnet clutch
• Harness or connector be-

tween IPDM E/R and magnet
clutch

• IPDM E/R

Cooling fan does not operate

Perform auto active test.
Does the cooling fan operate?

YES

• ECM signal input circuit
• CAN communication signal

between ECM and IPDM E/R

• Cooling fan
• Harness or connector be-

tween cooling fan and cool-
ing fan control module

• Cooling fan control module
• Harness or connector be-

tween IPDM E/R and cooling
fan control module

• Cooling fan relay
• Harness or connector be-

tween IPDM E/R and cooling
fan relay

• IPDM E/R

2014 GT-R

PCS

POWER SUPPLY AND GROUND CIRCUIT

PCS-11

< DTC/CIRCUIT DIAGNOSIS >

[IPDM E/R]

DTC/CIRCUIT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure

INFOID:0000000009163862

CHECK FUSES AND FUSIBLE LINK

Check that the following IPDM E/R fuses or fusible links 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 the ignition switch OFF.

Disconnect IPDM E/R connector.

Check voltage between the IPDM E/R harness connector and the ground.

Is the measurement value normal?

YES

>> GO TO 3.

>> Repair the harness or connector.

CHECK GROUND CIRCUIT

Check continuity between the IPDM E/R harness connectors and the ground.

Does continuity exist?

YES

>> INSPECTION END

>> Repair the harness or connector.

Signal name

Fuses and fusible link No.

Battery power supply

Terminals

Voltage

(Approx.)

(+)

(

−

)

IPDM E/R

Connector

Terminal

Ground

Battery voltage

IPDM E/R

Ground

Continuity

Connector

Terminal

Existed

2014 GT-R

PCS-12

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

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

ECU DIAGNOSIS INFORMATION

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

2014 GT-R

PCS

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

PCS-13

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

Wiring Diagram - IPDM E/R -

INFOID:0000000009163864

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

(option abbreviation; if not

described in wiring diagram), refer to

GI-12, "Connector Information"

JRMWC6661GB

2014 GT-R

PCS-14

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

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

JRMWC6662GB

2014 GT-R

PCS

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

PCS-15

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R]

JRMWC6663GB

2014 GT-R

PCS-16

< PRECAUTION >

[IPDM E/R]

PRECAUTIONS

PRECAUTION

PRECAUTIONS

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

INFOID:0000000009163867

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:0000000009163868

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

Precaution for Battery Service

INFOID:0000000009163869

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.

PIIB3706J

2014 GT-R

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Nissan GT-R (2007-2014 year). POWER CONTROL SYSTEM / POWER WINDOW CONTROL SYSTEM. Service Manual — part 1

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