Nissan Cube. Manual - part 709

PCS

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

PCS-61

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R (WITHOUT I-KEY)]

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If No CAN Communication Is Available With BCM

IGNITION RELAY MALFUNCTION DETECTION FUNCTION

• IPDM E/R monitors the voltage at the contact circuit of the ignition relay inside and ignition switch status

from BCM via CAN communication. 

• IPDM E/R judges the ignition relay error if the voltage differs between the contact circuit and the ignition

switch status from BCM via CAN communication.

• If the ignition relay cannot turn OFF due to contact seizure, it activates the tail lamp relay for 10 minutes to

alert the user to the ignition relay malfunction when the ignition switch is turned OFF.

FRONT WIPER CONTROL

IPDM E/R detects front wiper stop position by a front wiper stop position signal.
When a front wiper stop position signal is in the conditions listed below, IPDM E/R stops power supply to wiper
after repeating a front wiper 10 seconds activation and 20 seconds stop five times.

Control part

Fail-safe operation

Cooling fan

• The cooling fan relay-1, the cooling fan relay-2 and the cooling fan relay-3 turn ON 

when the ignition switch is turned ON (Cooling fan HI operation)

• The cooling fan relay-1, the cooling fan relay-2 and the cooling fan relay-3 turn OFF 

when the ignition switch is turned OFF

A/C compressor

A/C relay OFF

Alternator

Outputs the power generation command signal (PWM signal) 0%

Control part

Fail-safe operation

Headlamp

• Turns ON the headlamp low relay when the ignition switch is turned ON
• Turns OFF the headlamp low relay when the ignition switch is turned OFF
• Headlamp high relay OFF

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

• Turns ON the tail lamp relay when the ignition switch is turned ON
• Turns OFF the tail lamp relay when the ignition switch is turned OFF

Front wiper

• The status just before activation of fail-safe control is maintained until the ignition 

switch is turned OFF while the front wiper is operating at LO or HI speed.

• The wiper is operated at LO speed until the ignition switch is turned OFF if the fail-

safe control is activated while the front wiper is set in the INT mode and the front wiper 
motor is operating.

Front fog lamps

Front fog lamp relay OFF

Rear window defogger relay

Rear window defogger relay OFF

Horn

Horn OFF

Voltage judgment

IPDM E/R judgment

Operation

Ignition relay contact side

Ignition switch status from 

BCM

ON

ON

Ignition relay ON normal

—

OFF

OFF

Ignition relay OFF normal

—

ON

OFF

Ignition relay ON stuck

• Detects DTC “B2098: IGN RELAY ON”
• Turns ON the tail lamp relay for 10 min-

utes

OFF

ON

Ignition relay OFF stuck

Detects DTC “B2099: IGN RELAY OFF”

Ignition switch

Front wiper switch

Front wiper stop position signal

ON

OFF

The front wiper stop position signal (stop 
position) cannot be input for 10 seconds.

ON

The front wiper stop position signal does 
not change for 10 seconds.

PCS-62

< ECU DIAGNOSIS INFORMATION >

[IPDM E/R (WITHOUT I-KEY)]

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

NOTE:
This operation status can be confirmed on the IPDM E/R “Data Monitor” that displays “BLOCK” for the item
“WIP PROT” while the wiper is stopped.

DTC Index

INFOID:0000000009945039

NOTE:
• The details of time display are as follows.
- CRNT: A malfunction is detected now.
- PAST: A malfunction was detected in the past.
• IGN counter is displayed on FFD (Freeze Frame data).
- The number is 0 when is detected now.
- The number increases like 1 

→

 2 ··· 38 

→

 39 after returning to the normal condition whenever IGN OFF 

→

ON.

- The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.

×

: Applicable

CONSULT display

Fail-safe

Refer to

No DTC is detected.
further testing
may be required.

—

—

U1000: CAN COMM CIRCUIT

×

PCS-15

B2098: IGN RELAY ON CIRC

×

PCS-16

B2099: IGN RELAY OFF CIRC

—

PCS-47

PCS

PRECAUTIONS

PCS-63

< PRECAUTION >

[IPDM E/R (WITHOUT I-KEY)]

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PRECAUTION

PRECAUTIONS

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

INFOID:0000000009945040

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.

Precautions for Removing of Battery Terminal

INFOID:0000000010269416

•  When removing the 12V battery terminal, turn OFF the ignition

switch and wait at least 30 seconds.
NOTE:
ECU may be active for several tens of seconds after the ignition
switch is turned OFF. If the battery terminal is removed before ECU
stops, then a DTC detection error or ECU data corruption may
occur.

•  For vehicles with the 2-batteries, be sure to connect the main bat-

tery and the sub battery before turning ON the ignition switch.
NOTE:
If the ignition switch is turned ON with any one of the terminals of
main battery and sub battery disconnected, then DTC may be
detected.

•  After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.

NOTE:
The removal of 12V battery may cause a DTC detection error.

SEF289H

PCS-64

< REMOVAL AND INSTALLATION >

[IPDM E/R (WITHOUT I-KEY)]

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

REMOVAL AND INSTALLATION

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

Exploded View

INFOID:0000000009945041

Removal and Installation

INFOID:0000000009945042

CAUTION:

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

REMOVAL

1.

Disconnect the battery cable from the negative terminal.

2.

Remove the IPDM E/R (1) while pressing the pawls (A).

3.

Disconnect the harness connector and then remove the IPDM
E/R.

INSTALLATION

Install in the reverse order of removal.

1.

IPDM E/R cover A

2.

IPDM E/R

3.

IPDM E/R cover B

JPMIA1431ZZ

: Vehicle front

SKIB7943J