Nissan Xterra. Manual - part 525

PCS

RELAY CONTROL SYSTEM

PCS-3

< SYSTEM DESCRIPTION >

[IPDM E/R]

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System Description

INFOID:0000000009483711

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.

Control relay

Input/output

Transmit unit

Control part

Reference page

Front fog lamp relay
(if equipped)

Front fog lamp request signal

BCM (CAN)

Front fog lamps
(if equipped)

EXL-53

• Headlamp high relay
• Headlamp low relay

• High beam request signal
• Low beam request signal

BCM (CAN)

• Headlamp high
• Headlamp low

EXL-39
EXL-42

Tail lamp relay

Position light request signal

BCM (CAN)

• Parking  lamps
• License plate lamps
• Tail lamps
• Trailer tow relay
• Illumination system

EXL-58

• Front wiper relay
• Front wiper high relay

Front wiper request signal

BCM (CAN)

Front wiper motor

WW-4

Rear window defogger relay Rear window defogger request signal BCM (CAN)

Rear window defogger

DEF-4

A/C relay

A/C request signal

BCM (CAN)
ECM (CAN)

A/C compressor

HAC-33

Starter relay

Ignition switch START signal

TCM

Starter motor

STR-9

Cooling fan relays

Cooling fan request signal

ECM (CAN)

Cooling fan relay

CO-7

Heated mirror relay (if 
equipped)

Heated mirror request signal

BCM (CAN)

Door mirrors (if equipped)

DEF-12

ECM relay

ECM relay control signal

ECM (CAN)

ECM relay

EC-149

Throttle control motor relay

Throttle control motor control signal

ECM (CAN)

Throttle control motor relay

EC-433

Fuel pump relay

Fuel pump request signal

ECM (CAN)

Fuel pump

EC-467

Ignition relay

Ignition switch ON signal

Ignition switch Ignition relay

BCS-6

PCS-4

< SYSTEM DESCRIPTION >

[IPDM E/R]

RELAY CONTROL SYSTEM

Component Parts Location

INFOID:0000000009483712

1.

IPDM E/R E118, E119, E120, E121, 
E122, E123, E124

AWMIA0504ZZ

PCS

POWER CONTROL SYSTEM

PCS-5

< SYSTEM DESCRIPTION >

[IPDM E/R]

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POWER CONTROL SYSTEM

System Diagram

INFOID:0000000009483713

System Description

INFOID:0000000009483714

COOLING FAN CONTROL

IPDM E/R controls the cooling fan according to the status of the cooling fan speed request signal received

from ECM via CAN communication. Refer to 

EC-31, "Description"

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AWMIA0527GB

PCS-6

< SYSTEM DESCRIPTION >

[IPDM E/R]

SIGNAL BUFFER SYSTEM

SIGNAL BUFFER SYSTEM

System Diagram

INFOID:0000000009483715

System Description

INFOID:0000000009483716

IPDM E/R reads the status of the oil pressure switch and transmits the oil pressure switch signal to BCM via

CAN communication. Refer to 

BCS-12, "System Description"

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AWNIA0174GB