Nissan Rogue. Manual - part 940

PCS-6

< SYSTEM DESCRIPTION >

[IPDM E/R]

COMPONENT PARTS

SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

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1.

IPDM E/R

A. Engine compartment (LH)

AWMIA1489ZZ

PCS

SYSTEM

PCS-7

< SYSTEM DESCRIPTION >

[IPDM E/R]

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SYSTEM

RELAY CONTROL SYSTEM
RELAY CONTROL SYSTEM : System Description

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SYSTEM DIAGRAM

DESCRIPTION

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.

AWMIA1616GB

Control relay

Input/output

Transmit unit

Control part

Reference page

• Front wiper relay
• Front wiper high relay

Front wiper request signal

BCM (CAN)

Front wiper motor

WW-8

Front wiper stop position signal Front wiper motor

Starter relay

Starter relay signal

BCM (CAN)

Starter motor

STR-6

Transmission range switch sig-
nal

Transmission range 
switch

Cooling fan relay-1

Cooling fan speed request sig-
nal

ECM (CAN)

Cooling fan

EC-48

PCS-8

< SYSTEM DESCRIPTION >

[IPDM E/R]

SYSTEM

RELAY CONTROL SYSTEM : Fail-safe

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CAN COMMUNICATION CONTROL

When CAN communication with ECM and BCM is impossible, IPDM E/R performs fail-safe control. After CAN

communication recovers normally, it also returns to normal control.

If No CAN Communication Is Available With ECM

If No CAN Communication Is Available With BCM

IGNITION RELAY MALFUNCTION DETECTION FUNCTION

• IPDM E/R monitors the voltage at the contact circuit and excitation coil circuit of the ignition relay-1 inside it. 

• IPDM E/R judges the ignition relay-1 error if the voltage differs between the contact circuit and the excitation

coil circuit.

FRONT WIPER CONTROL

IPDM E/R detects front wiper stop position by a front wiper auto stop signal.

When a front wiper auto stop signal is in the conditions listed below, IPDM E/R stops power supply to wiper

after repeating a front wiper 10 second activation and 20 second stop five times.

A/C relay

A/C compressor request signal ECM (CAN)

A/C compressor
(Magnet clutch)

HAC-10

 (automatic air 

conditioning)

HAC-118

 (manual air 

conditioning)

Ignition relay-1

Ignition switch ON signal

BCM (CAN)

Each control unit, 
sensor, actuator and 
relay (Ignition power 
supply) 

EC-41

Vehicle speed signal (Meter)

Combination meter 
(CAN)

Push-button ignition switch sig-
nal (with Intelligent Key sys-
tem)

Push-button ignition 
switch (with Intelligent 
Key system)

Ignition switch signal (without 
Intelligent Key system)

Ignition switch (without 
Intelligent Key system)

Control relay

Input/output

Transmit unit

Control part

Reference page

Control part

Fail-safe operation

Cooling fan

• The cooling fan relay-1 turn ON when the ignition switch is turned ON (Cooling fan HI operation)
• The cooling fan relay-1 turn OFF when the ignition switch is turned OFF

A/C compressor

A/C relay OFF

Control part

Fail-safe operation

Front wiper motor

• 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 ac-

tivated while the front wiper is set in the INT mode and the front wiper motor is operating.

• Returns automatically wiper to stop position when ignition switch is turned ON if fail-safe control is 

activated while front wiper motor is operated and wiper stop in the other position than stop position.

Horn

Horn OFF

Ignition relay-1

The status just before activation of fail-safe is maintained.

Starter motor

Starter relay OFF

DTC

Ignition switch

Ignition relay

B20DD: IGNITION RELAY ON CIRCUIT

OFF

ON

B20DE: IGNITION RELAY OFF CIRCUIT

ON

OFF

PCS

SYSTEM

PCS-9

< SYSTEM DESCRIPTION >

[IPDM E/R]

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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.

STARTER MOTOR PROTECTION FUNCTION

IPDM E/R turns OFF the starter relay to protect the starter motor when the starter relay remains active for 90

seconds.

SMART FIELD-EFFECT TRANSISTOR (FET)
SMART FIELD-EFFECT TRANSISTOR (FET) : System Description

INFOID:0000000011277074

A smart Field-Effect Transistor (FET) is a transistor used to monitor and control current flow on module out-

puts. The IPDM E/R uses a smart FET protection strategy to prevent module damage in the event of exces-

sive current flow. The smart FET protection strategy monitors its outputs for excessive current, and when a

fault occurs, shuts down the output and records a DTC. 

POWER CONSUMPTION CONTROL SYSTEM
POWER CONSUMPTION CONTROL SYSTEM : System Description

INFOID:0000000011277075

SYSTEM DIAGRAM

DESCRIPTION

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.

Ignition switch

Front wiper switch

Auto stop signal

ON

OFF

Front wiper stop position signal cannot be 
input 10 seconds.

ON

The signal does not change for 10 seconds.

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