Infiniti G37 Coupe. Manual - part 960

 

  Index      Infiniti     Infiniti G37 Coupe - service repair manual 2008 year

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  958  959  960  961   ..

 

 

Infiniti G37 Coupe. Manual - part 960

 

 

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

POWER CONSUMPTION CONTROL SYSTEM

System Diagram

INFOID:0000000001686897

System Description

INFOID:0000000001723930

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.

- Outputting signals to actuators
- Switches or relays operating
- 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.

JPMIA0069GB

PCS-10

< FUNCTION DIAGNOSIS >

[IPDM E/R]

POWER CONSUMPTION CONTROL SYSTEM

Component Parts Location

INFOID:0000000001766511

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)

JPMIA0623ZZ

PCS

DIAGNOSIS SYSTEM (IPDM E/R)

PCS-11

< FUNCTION DIAGNOSIS >

[IPDM E/R]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

DIAGNOSIS SYSTEM (IPDM E/R)

Diagnosis Description

INFOID:0000000001605866

AUTO ACTIVE TEST

Description

In auto active test mode, the IPDM E/R sends a drive signal to the following systems to check their operation.
• Oil pressure warning lamp
• Front wiper (LO, HI)
• Parking lamps
• License plate lamps
• Side maker lamps
• Tail lamps
• Front fog lamps
• Headlamps (LO, HI)
• A/C compressor (magnet clutch)
• Cooling fan (cooling fan control module)

Operation Procedure

1.

Close the hood and lift the wiper arms from the windshield. (Prevent windshield damage due to wiper
operation)
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield beforehand.

2.

Turn ignition switch OFF.

3.

Turn the ignition switch ON, and within 20 seconds, press the driver door switch 10 times. Then turn the
ignition switch OFF.

CAUTION:

Close passenger door.

4.

Turn the ignition switch ON within 10 seconds. After that the horn sounds once and the auto active test
starts.

5.

The oil pressure warning lamp starts blinking when the auto active test starts.

6.

After a series of the following operations is repeated 3 times, auto active test is completed.

NOTE:
When auto active test mode has to be cancelled halfway through test, turn ignition switch OFF.

CAUTION:

• If auto active test mode cannot be actuated, check door switch system. Refer to 

DLK-66,

"Component Function Check"

.

• Do not start the engine.

Inspection in Auto Active Test Mode

When auto active test mode is actuated, the following 6 steps are repeated 3 times.

JPMIA0521ZZ

PCS-12

< FUNCTION DIAGNOSIS >

[IPDM E/R]

DIAGNOSIS SYSTEM (IPDM E/R)

*: Outputs duty ratio of 50% for 5 seconds 

 duty ratio of 100% for 5 seconds on the cooling fan control module.

Concept of auto active test

• IPDM E/R starts the auto active test with the door switch signals transmitted by BCM via CAN communica-

tion. Therefore, the CAN communication line between IPDM E/R and BCM is considered normal if the auto
active test starts successfully.

• The auto active test facilitates troubleshooting if any systems controlled by IPDM E/R cannot be operated.

Diagnosis chart in auto active test mode

Operation 
sequence

Inspection location

Operation

1

Oil pressure warning lamp

Blinks continuously during operation of auto active test 

2

Front wiper

LO for 5 seconds 

 HI for 5 seconds

3

• Parking  lamps
• License plate lamps
• Side maker lamps
• Tail lamps
• Front fog lamps

10 seconds

4

Headlamps

LO 

 HI 5 times

5

A/C compressor (magnet clutch)

ON 

 OFF 5 times

6

*

Cooling fan

MID for 5 seconds 

 HI for 5 seconds

JPMIA0009GB

Symptom

Inspection contents

Possible cause

Any of the following components do not operate

• Parking lamps
• License plate lamps
• Side maker lamps
• Tail  lamps
• Front  fog  lamps
• Headlamp (HI, LO)
• Front wiper

Perform auto active test.
Does the applicable system 
operate?

YES

BCM signal input circuit

NO

• Lamp or motor
• Lamp or motor ground cir-

cuit

• Harness or connector be-

tween IPDM E/R and appli-
cable system

• IPDM  E/R

 

 

 

 

 

 

 

Content   ..  958  959  960  961   ..