Nissan Versa Note. Manual - part 606

PCS-34

< SYSTEM DESCRIPTION >

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

COMPONENT PARTS

SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

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1.

IPDM E/R

A. Engine compartment (LH)

AWMIA1435ZZ

PCS

SYSTEM

PCS-35

< SYSTEM DESCRIPTION >

[IPDM E/R (WITHOUT I-KEY)]

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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:

To prevent damage to the parts, IPDM E/R integrated relays cannot be removed.

AWMIA1447GB

PCS-36

< SYSTEM DESCRIPTION >

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

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

Control relay

Input/output

Transmit unit

Control part

Reference page

• Headlamp high relay
• Headlamp low relay

• High beam request signal
• Low beam request signal

BCM (CAN)

• Headlamp high
• Headlamp low
• Daytime light relay 2

EXL-8

Tail lamp relay

Position light request signal

BCM (CAN)

• Parking  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 motor

WW-8

Starter relay

Ignition switch START signal

• Transmission 

range switch (with 
CVT)

• Clutch interlock 

switch (with M/T)

Starter motor

STR-8

• Cooling fan low relay
• Cooling fan high relay

Cooling fan request signal

ECM (CAN)

Cooling fan motor (low)
Cooling fan motor (high)

EC-38

A/C relay

A/C request signal

• BCM  (CAN)
• ECM  (CAN)

A/C compressor
(Magnet clutch)

HAC-13

Ignition relay

Ignition switch ON or START signal

Ignition switch

Ignition switch ON or 
START power 

EC-35

Control part

Fail-safe operation

Cooling fan

• The cooling fan relay turn ON when the ignition switch is turned ON (Cooling fan HI oper-

ation)

• The cooling fan relay turn OFF when the ignition switch is turned OFF

A/C compressor

A/C relay OFF

Generator

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  lamp
• License plate lamp
• Illumination
• Tail  lamp

• 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 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 activated 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.

Front fog lamp

Front fog lamp relay OFF

Horn

Horn OFF

PCS

SYSTEM

PCS-37

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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 PROTECTION FUNCTION

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.

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.

POWER CONSUMPTION CONTROL SYSTEM
POWER CONSUMPTION CONTROL SYSTEM : System Description

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SYSTEM DIAGRAM

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.

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 minutes

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.

ALCIA0030GB