Infiniti G35 (V35) Sedan. Manual - part 988

PCS-6

< FUNCTION DIAGNOSIS >

[IPDM E/R]

POWER CONTROL SYSTEM

POWER CONTROL SYSTEM

System Diagram

INFOID:0000000000964173

System Description

INFOID:0000000000964174

COOLING FAN CONTROL

IPDM E/R outputs pulse duty signal (PWM signal) to the cooling fan control module according to the status of
the cooling fan speed request signal received from ECM via CAN communication. Refer to 

EC-67, "System

Description"

.

ALTERNATOR CONTROL

IPDM E/R outputs power generation command signal (PWM signal) to the alternator according to the status of
the power generation command value signal received from ECM via CAN communication. Refer to 

CHG-8,

"System Description"

.

Component Parts Location

INFOID:0000000000964175

JSMIA0004GB

1.

IPDM E/R

A.

Engine room dash panel (RH)

JPMIA0065ZZ

PCS

SIGNAL BUFFER SYSTEM

PCS-7

< 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:0000000000964176

System Description

INFOID:0000000000964177

• 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 

MWI-22, "WARNING LAMPS/INDICATOR LAMPS : System Description"

.

• IPDM E/R reads the status of the hood switch and transmits the hood switch signal to BCM via CAN commu-

nication. Refer to 

SEC-114, "Description"

.

• IPDM E/R receives the rear window defogger status signal from BCM via CAN communication and transmits

it to ECM and AV control unit via CAN communication. Refer to 

DEF-4, "System Description"

.

Component Parts Location

INFOID:0000000000964178

JSMIA0005GB

1.

IPDM E/R

A.

Engine room dash panel (RH)

JPMIA0065ZZ

PCS-8

< FUNCTION DIAGNOSIS >

[IPDM E/R]

POWER CONSUMPTION CONTROL SYSTEM

POWER CONSUMPTION CONTROL SYSTEM

System Diagram

INFOID:0000000000964179

System Description

INFOID:0000000000964180

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
- Switches or relays operating
- Auto active test is starting
- Emergency OFF
- Hood switch status is kept for 50 ms or more.
- 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
- The hood switch status changes.
- An output request is received from a control unit via CAN communication.

Component Parts Location

INFOID:0000000000964181

JPMIA0069GB

PCS

POWER CONSUMPTION CONTROL SYSTEM

PCS-9

< FUNCTION DIAGNOSIS >

[IPDM E/R]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

1.

BCM

2.

IPDM E/R

3.

Unified meter and A/C amp.

4.

Driver seat control unit

A.

Dash side lower (passenger side)

B.

Engine room dash panel (RH)

C.

Behind Cluster lid C

D.

Backside of the seat cushion (driver 
seat)

JPMIA0072ZZ