Nissan Maxima. Manual - part 881

PCS-4

< SYSTEM DESCRIPTION >

[IPDM E/R]

RELAY CONTROL SYSTEM

SYSTEM DESCRIPTION

RELAY CONTROL SYSTEM

System Diagram

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AWMIA1323GB

PCS

RELAY CONTROL SYSTEM

PCS-5

< SYSTEM DESCRIPTION >

[IPDM E/R]

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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.

1: BCM controls the starter relay.

Control relay

Input/output

Transmit unit

Control part

Reference 

page

Headlamp low relay

Low beam request signal

BCM (CAN)

Headlamp low

EXL-40

 

(xenon 
type)

EXL-205

 

(halogen 
type)

Headlamp high relay

High beam request signal

BCM (CAN)

Headlamp high

EXL-36

 

(xenon 
type)

EXL-201

 

(halogen 
type)

Front fog lamp relay (if 
equipped)

Front fog light request signal

BCM (CAN)

Front fog lamp  (if 
equipped)

EXL-43

 

(xenon 
type)

EXL-207

 

(halogen 
type)

Tail lamp relay

Position light request signal

BCM (CAN)

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

EXL-45

 

(xenon 
type)

EXL-209

  

(halogen 
type)

• Front wiper relay
• Front wiper high relay

Front wiper request signal

BCM (CAN)

Front wiper

WW-18

Front wiper auto stop signal

Front wiper motor

• Starter relay

1

• Starter control relay

Starter control relay signal

BCM (CAN)

Starter motor

STR-8

Starter relay control signal

TCM

A/C relay

A/C compressor request sig-
nal

ECM (CAN)

A/C compressor
(magnet clutch)

HAC-57

 

(with color 
display)

HAC-161

 

(with mono-
chrome dis-
play)

Ignition relay - 1

Ignition switch ON signal

BCM (CAN)

Ignition relay - 1

BCS-8

Vehicle speed signal

Combination meter (CAN)

Push-button ignition switch

Push-button ignition switch

Fuel pump relay

Fuel pump request signal

ECM

Fuel level sensor unit and 
fuel pump (fuel pump)

EC-499

ECM relay

ECM relay control signal

ECM

ECM relay

EC-157

Throttle control motor relay

Throttle control motor relay 
signal

ECM

Throttle control motor re-
lay

EC-456

Cooling fan relay - 1

Cooling fan request signal

ECM (CAN)

Cooling fan relay - 1

EC-486

PCS-6

< SYSTEM DESCRIPTION >

[IPDM E/R]

RELAY CONTROL SYSTEM

Component Parts Location

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1.

IPDM E/R E16, E17, E18, E200, 
E201, F10

AWMIA1117ZZ

PCS

POWER CONTROL SYSTEM

PCS-7

< SYSTEM DESCRIPTION >

[IPDM E/R]

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POWER CONTROL SYSTEM

System Diagram

INFOID:0000000009467092

System Description

INFOID:0000000009467093

COOLING FAN CONTROL

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

ECM via CAN communication.

GENERATOR CONTROL

IPDM E/R outputs power generation command signal (PWM signal) to the generator according to the status of

the power generation command value signal received from ECM via CAN communication. Refer to 

CHG-9,

"System Description"

.

ALCIA0028GB