Infiniti FX35, FX50 (S51). Manual - part 1420

 

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Infiniti FX35, FX50 (S51). Manual - part 1420

 

 

PCS-38

< BASIC INSPECTION >

[POWER DISTRIBUTION SYSTEM]

DIAGNOSIS AND REPAIR WORK FLOW

Is malfunctioning part detected?

YES

>> GO TO 8.

NO

>> Check voltage of related BCM terminals using CONSULT-III.

8.

REPAIR OR REPLACE THE MALFUNCTIONING PART

1.

Repair or replace the malfunctioning part.

2.

Reconnect parts or connectors disconnected during Diagnostic Procedure again after repair and replace-
ment.

3.

Check DTC. If DTC is detected, erase it.

>> GO TO 9.

9.

FINAL CHECK

When DTC was detected in step 2, perform DTC Confirmation Procedure or Component Function Check
again, and then check that the malfunction has been repaired securely.
When symptom was described from the customer, refer to confirmed symptom in step 3 or 4, and check that
the symptom is not detected.

Does the symptom reappear?

YES (DTC is detected)>>GO TO 7.
YES (Symptom remains)>>GO TO 6.
NO

>> INSPECTION END

PCS

POWER DISTRIBUTION SYSTEM

PCS-39

< SYSTEM DESCRIPTION >

[POWER DISTRIBUTION SYSTEM]

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SYSTEM DESCRIPTION

POWER DISTRIBUTION SYSTEM

System Description

INFOID:0000000005240659

• 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 inside key antenna
- Insert Intelligent Key into the key slot
- Insert key fob into 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 (built into IPDM E/R)
- Ignition relay (inserted into fuse block)
- ACC relay
- Blower relay

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

• The power supply position can be confirmed with the illuminating of the indicators around the push-button

ignition switch.

BATTERY SAVER SYSTEM

When all of the following conditions are met for 60 minutes, the battery saver system will cut off the power sup-
ply to prevent battery discharge.
• The ignition switch is in the ACC position
• All doors are closed
• Selector lever is in the P position

Reset Condition of Battery Saver System

If any of the following conditions are met the battery saver system is released and the steering will change
automatically to the LOCK position from the OFF position.
• Opening any door
• Operating with door key cylinder on door lock
• Operating with request switch on door lock
• Operating with Intelligent Key on door lock
Press push-button ignition switch and ignition switch will change to the ACC position from the OFF position.

STEERING LOCK OPERATION

Steering is locked by steering lock unit when ignition switch is in the OFF position, selector lever is in the P
position and any of the following conditions are met.
• Opening door
• Closing door
• Door is locked with request switch
• Door is locked with Intelligent Key

PUSH-BUTTON IGNITION SWITCH OPERATION PROCEDURE

The power supply position changing operation can be performed with the following operations.

Operation Enable Condition

• When an Intelligent Key is within the detection area of inside key antenna or when it is inserted into the key

slot, the operation is as per the following.

• When starting the engine, the BCM monitors the following engine start conditions,
- Brake pedal operating condition
- Selector lever position
- 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.

Operation Condition

PCS-40

< SYSTEM DESCRIPTION >

[POWER DISTRIBUTION SYSTEM]

POWER DISTRIBUTION SYSTEM

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

• At a vehicle speed of less than 4 km/h (2.5 MPH), the engine can start only when the brake pedal is depressed.

• At a vehicle speed of 4 km/h (2.5 MPH) 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 selector lever position is in any position other than the P position and when the vehicle speed is 5 km/h (3.1 MPH) 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 an incorrect operation.)

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

Component Parts Location

INFOID:0000000005240660

Power supply position

Engine start/stop condition

Push-button ignition switch op-

eration frequency

Brake pedal

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

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)

P 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

JMMIA0022ZZ

PCS

POWER DISTRIBUTION SYSTEM

PCS-41

< SYSTEM DESCRIPTION >

[POWER DISTRIBUTION SYSTEM]

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Component Description

INFOID:0000000005240661

1.

BCM M118, M119, M121, M122, M123 2.

IPDM E/R E5, E6, F7

3.

Push button ignition switch M50

4.

Unified meter and A/C amp. M66, M67 5.

Key warning lamp (Combination meter 
M53)

6.

Stop lamp switch E110

7.

A/T assembly connector F51

8.

TCM (built in A/T assembly) F151

A.

Dash side lower (passenger side)

B.

Engine room dash panel (RH)

C.

View with the cluster lid C removed

D.

Located on the combination meter

E.

Behind the instrument assist lower 
panel

F.

A/T assembly

Component

Reference

IPDM E/R

PCS-4

Ignition relay (built into IPDM E/R)

PCS-50

Ignition relay (inserted into fuse block)

PCS-50

Accessory relay

PCS-54

Blower relay

PCS-56

Stop lamp switch

SEC-54

Transmission range switch

SEC-68

Push-button ignition switch

PCS-64

 

 

 

 

 

 

 

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