Infiniti QX56 (JA60). Manual - part 721

PCS-6

< FUNCTION DIAGNOSIS >

[IPDM E/R]

RELAY CONTROL SYSTEM

System Description

INFOID:0000000005146497

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

Front fog lamp request signal

BCM (CAN)

Front fog lamps

EXL-14

• Headlamp LH high relay
• Headlamp RH high relay
• Headlamp low relay

• High beam request signal LH
• High beam request signal RH
• Low beam request signal

BCM (CAN)

• Headlamp high LH
• Headlamp high RH
• Headlamp low

EXL-7
EXL-7

Tail lamp relay

Position light request signal

BCM (CAN)

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

EXL-17

• 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

WW-8

A/C relay

A/C request signal

• BCM  (CAN)
• ECM  (CAN)

A/C compressor

HAC-20

Starter relay

Ignition switch START signal

TCM

Starter motor

STR-8

Cooling fan relay

Cooling fan request signal

ECM (CAN)

Cooling fan relay

EC-36

Heated mirror relay

Heated mirror request signal

BCM (CAN)

Door mirrors

DEF-4

ECM relay

ECM relay control signal

ECM (CAN)

ECM relay

EC-21

Throttle control motor relay

Throttle control motor control signal

ECM (CAN)

Throttle control motor re-
lay

EC-28

Fuel pump relay

Fuel pump request signal

ECM (CAN)

Fuel pump

EC-28

Ignition relay

Ignition switch ON signal

Ignition switch

Ignition relay

EC-31

PCS

RELAY CONTROL SYSTEM

PCS-7

< FUNCTION DIAGNOSIS >

[IPDM E/R]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

Component Parts Location

INFOID:0000000005146498

1.

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

ALMIA0341ZZ

PCS-8

< FUNCTION DIAGNOSIS >

[IPDM E/R]

POWER CONTROL SYSTEM

POWER CONTROL SYSTEM

System Diagram

INFOID:0000000005146499

System Description

INFOID:0000000005146500

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 

LAN-4, "System Description"

.

ALMIA0111GB

PCS

SIGNAL BUFFER SYSTEM

PCS-9

< FUNCTION DIAGNOSIS >

[IPDM E/R]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

SIGNAL BUFFER SYSTEM

System Diagram

INFOID:0000000005146501

System Description

INFOID:0000000005146502

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 

LAN-4, "System Description"

.

AWNIA0174GB