Infiniti G35 (V35) Sedan. Manual - part 996

PCS-38

< FUNCTION DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

POWER DISTRIBUTION SYSTEM

FUNCTION DIAGNOSIS

POWER DISTRIBUTION SYSTEM

System Description

INFOID:0000000000964203

INPUT/OUTPUT SIGNAL CHART

SYSTEM DESCRIPTION

• PDS (POWER DISTRIBUTION SYSTEM) is the system that BCM controls with the operation of the push-

button ignition switch and performs the power distribution to each power circuit. This system is used instead
of the mechanical power supply changing mechanism with the operation of the conventional key cylinder.

• The push-button ignition switch can be operated when Intelligent Key is in the following condition. Refer to

Engine Start Function for details.

- Intelligent Key is in the detection area of the interior antenna
- Insert Intelligent Key in to the key slot
• The push-button ignition switch operation is input to BCM as a signal. BCM changes the power supply posi-

tion according to the status and operates the following relays to supply power to each power circuit.

- Ignition relay (inside IPDM E/R)
- Ignition relay (inside fuse block)
- ACC relay
- Blower fan relay

NOTE:
The engine switch operation changes due to the conditions of brake pedal, A/T selector lever and vehicle
speed.

• The power supply position can be confirmed with the lighting of the indicators near the push-button ignition

switch.

PUSH-BUTTON IGNITION SWITCH OPERATION PROCEDURE

The power supply position changing operation can be performed with the following operation.
NOTE:
• When an Intelligent Key is within the detection area of inside key antenna and when it is inserted in to the

key slot, it is equivalent to the operations below.

• When starting the engine, the BCM monitors under the engine start conditions,
- Brake pedal operating condition (A/T models)
- A/T selector lever position (A/T models)
- Clutch pedal operating condition (M/T models)
- Vehicle speed
• Unless each start condition is fulfilled, the engine will not respond regardless of how many times the engine

switch is pressed. At that time, illumination repeats the position in the order of LOCK

→

ACC

→

ON

→

OFF.

Switch

Input Signal to BCM

BCM system

Actuator

Push-button ignition switch

Push switch

Power destribution system

• Ignition relay (IPDM E/R)
• Ignition relay (fuse block)
• ACC relay
• Blower relay

AT device (A/T models)

P range

PNP switch (A/T models)

N, P range

Clutch interlock switch (M/T models)

Clutch ON/OFF

Stop lamp switch

Brake ON/OFF

Power supply position

Engine start/stop condition

Push-button ignition switch op-

eration frequency

Brake pedal (A/T)/clutch pedal 

(M/T)

A/T selector lever position

LOCK 

→

 ACC

Not depressed

Any position

1

LOCK 

→

 ACC 

→

 ON

Not depressed

Any position

2

LOCK 

→

 ACC 

→

 ON 

→

 

OFF

Not depressed

Any position

3

PCS

POWER DISTRIBUTION SYSTEM

PCS-39

< FUNCTION DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

*1: When the A/T selector lever position is N position, the engine start condition is different according to the vehicle speed.

• At vehicle speed of 4 km/h or less, the engine can start only when the brake pedal is depressed.

• At vehicle speed of 4 km/h or more, the engine can start even if the brake pedal is not depressed. (It is the same as “Engine stall

return operation while driving”.)

*2: When the A/T selector lever position is in any position other than P position and when the vehicle speed is 5 km/h or more, the
engine stop condition is different.

• Press and hold the push-button ignition switch for 2 seconds or more. (When the push-button ignition switch is pressed for too short a

time, the operation may be invalid, so properly press and hold to prevent the incorrect operation.)

• Press the push-button ignition switch 3 times or more within 1.5 seconds. (Emergency stop operation)

Component Parts Location

INFOID:0000000000964204

LOCK 

→

 START

ACC 

→

 START

ON 

→

 START

(Engine start)

Depressed

P or N position (*1)

1

[If the switch is pressed once, 

the engine starts from any pow-
er supply position (LOCK, ACC, 

and ON)]

Engine is running 

→

 

OFF
(Engine stop)

—

Any position

1

Engine is running 

→

 

ACC
(Engine stop)

—

Any position other than P (*2)

1

Engine stall return oper-
ation while driving

—

N position

1

Power supply position

Engine start/stop condition

Push-button ignition switch op-

eration frequency

Brake pedal (A/T)/clutch pedal 

(M/T)

A/T selector lever position

PCS-40

< FUNCTION DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

POWER DISTRIBUTION SYSTEM

JMMIA0001ZZ

1.

BCM M118, M119, M120, M121, 
M122, M123

2.

IPDM E/R E5, E6

3.

Unified meter and A/C AMP. M66, M67

4.

Push button ignition switch M50

5.

TCM F151

6.

Combination meter (Key warning 
lamp) M53

7.

Ignition relay

8.

Accessory relay

9.

Blower relay

10.

Clutch interlock switch E111

11.

Stop lamp switch E110

A.

Dash side lower (Passenger side).

B.

Engine room dash panel (RH).

C.

Behind cluster lid C.

D.

Inside of A/T (built into A/T).

E.

View with dash side LH removed.

F

View with instrument driver lower cov-
er removed.

G.

View with instrument driver lower cov-
er removed.

PCS

POWER DISTRIBUTION SYSTEM

PCS-41

< FUNCTION DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

Component Description

INFOID:0000000000964205

BCM

Reference

IPDM E/R

PCS-3

Ignition relay (Built-in IPDM E/R)

PCS-63

Ignition relay (Built-in fuse block)

PCS-60

Accessory relay

PCS-52

Blower relay

PCS-57

Stop lamp

SEC-47

Park/neutral position switch

SEC-61

Clutch switch

SEC-100

Push-button ignition switch

SEC-49