Nissan Pathfinder. Manual - part 882

PCS-4

< SYSTEM DESCRIPTION >

[IPDM E/R]

COMPONENT PARTS

SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

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1.

IPDM E/R

ALMIA0559ZZ

PCS

SYSTEM

PCS-5

< SYSTEM DESCRIPTION >

[IPDM E/R]

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SYSTEM

RELAY CONTROL SYSTEM
RELAY CONTROL SYSTEM : System Diagram

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RELAY CONTROL SYSTEM : System Description

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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.

AWMIA1451GB

PCS-6

< SYSTEM DESCRIPTION >

[IPDM E/R]

SYSTEM

POWER CONSUMPTION CONTROL SYSTEM
POWER CONSUMPTION CONTROL SYSTEM : System Diagram

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POWER CONSUMPTION CONTROL SYSTEM : System Description

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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.

- Front wiper fail-safe operation 

- Outputting signals to actuators

Control relay

Input/output

Transmit unit

Control part

Reference 

page

Front fog lamp relay

Front fog lamp request signal

BCM (CAN)

Front fog lamp

EXL-115

• Headlamp low relay
• Headlamp high relay

• Low beam request signal
• High beam request signal

BCM (CAN)

• Headlamp low
• Headlamp High

EXL-110
EXL-108

Tail lamp relay

Position light request signal

BCM (CAN)

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

EXL-117

• Front wiper relay
• Front wiper high relay

Front wiper request signal

BCM (CAN)

Front wiper

WW-52

Front wiper auto stop signal

Front wiper motor

Ignition relay-1

Ignition switch ON signal

BCM (CAN)

Ignition relay-1

PCS-60

Vehicle speed signal

Combination meter (CAN)

Push-button ignition switch

Push-button ignition switch

A/C relay

A/C compressor request signal ECM (CAN)

A/C compressor

HAC-133

ALCIA0030GB

PCS

SYSTEM

PCS-7

< SYSTEM DESCRIPTION >

[IPDM E/R]

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- Switches or relays operating

- Auto active test is starting

- Emergency OFF

- 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

- An output request is received from a control unit via CAN communication.

IGNITION BATTERY SAVER LOGIC

If the ignition is ON for 30 minutes with the engine OFF, the IPDM E/R and BCM turn OFF to save the battery.