Nissan Pathfinder. Manual — part 890
PCS-36
< SYSTEM DESCRIPTION >
[POWER DISTRIBUTION SYSTEM]
SYSTEM
SYSTEM
POWER DISTRIBUTION SYSTEM
POWER DISTRIBUTION SYSTEM : System Diagram
INFOID:0000000009175211
POWER DISTRIBUTION SYSTEM : System Description
INFOID:0000000009175212
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.
- Intelligent Key is in the detection area of the inside key antenna.
- Intelligent Key backside is contacted to push-button ignition switch.
• 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-1
- Ignition relay-2
- Accessory relay-1
- Accessory relay-2
- Front blower motor 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 lighting of the indicators in the push-button ignition
switch.
BATTERY SAVER SYSTEM
When all the following conditions are met for 30 minutes, the battery saver system will cut off the power supply
to prevent battery discharge.
• The ignition switch is in the ACC or ON position
• All doors are closed
• Selector lever is in the P (park) position
Reset Condition of Battery Saver System
In order to prevent the battery from discharging, the battery saver system will cut off the power supply when all
doors are closed, the selector lever is in P (park) position and the ignition switch is left in the ACC or ON posi-
tion for 30 minutes. If any of the following conditions are met the battery saver system is released and the
steering will change automatically to lock position from OFF position.
• Opening any door
• Operating door request switch on door handle
• Operating Intelligent Key
ALMIA0608GB
PCS
SYSTEM
PCS-37
< SYSTEM DESCRIPTION >
[POWER DISTRIBUTION SYSTEM]
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B
A
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P
N
POWER SUPPLY POSITION CHANGE TABLE BY PUSH-BUTTON IGNITION SWITCH OPERA-
TION
The power supply position changing operation can be performed with the following operations.
NOTE:
• When an Intelligent Key is within the detection area of inside key antenna and when Intelligent Key backside
is contacted to push-button ignition switch, it is equivalent to the operations below.
• When starting the engine, the BCM monitors under the engine start conditions:
- Brake pedal operating condition
- Selector lever position
- Vehicle speed
Vehicle speed: less than 4 km/h (2.5 MPH)
Vehicle speed: 4 km/h (2.5 MPH) or more
Emergency stop operation
• Press and hold the push-button ignition switch for 2 seconds or more.
• Press the push-button ignition switch 3 times or more within 1.5 seconds.
Power supply position
Engine start/stop condition
Push-button ignition switch
operation frequency
Selector lever position
Brake pedal operation condition
OFF
→ ACC
—
Not depressed
1
OFF
→ ACC → ON
—
Not depressed
2
OFF
→ ACC → ON → OFF
—
Not depressed
3
OFF
→ START
ACC
→ START
ON
→ START
P or N position
Depressed
1
Engine is running
→ OFF
—
—
1
Power supply position
Engine start/stop condition
Push-button ignition switch
operation frequency
Selector lever position
Brake pedal operation condition
Engine is running
→ ACC
—
—
Emergency stop operation
Engine stall return operation
while driving
N position
Not depressed
1
PCS-38
< SYSTEM DESCRIPTION >
[POWER DISTRIBUTION SYSTEM]
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)
INFOID:0000000009764050
CAUTION:
After disconnecting the CONSULT vehicle interface (VI) from the data link connector, the ignition must
be cycled OFF
→ ON (for at least 5 seconds) → OFF. If this step is not performed, the BCM may not go
to ”sleep mode”, potentially causing a discharged battery and no-start condition.
APPLICATION ITEM
CONSULT performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions.
Direct Diagnostic Mode
Description
Ecu Identification
The BCM part number is displayed.
Self Diagnostic Result
The BCM self diagnostic results are displayed.
Data Monitor
The BCM input/output data is displayed in real time.
Active Test
The BCM activates outputs to test components.
Work support
The settings for BCM functions can be changed.
Configuration
• The vehicle specification can be read and saved.
• The vehicle specification can be written when replacing BCM.
CAN Diag Support Mntr
The result of transmit/receive diagnosis of CAN communication is displayed.
System
Sub System
Direct Diagnostic Mode
Ecu I
de
nti
ficat
ion
Se
lf Di
ag
no
sti
c
Res
ult
Dat
a Monitor
Active T
e
st
W
ork su
pp
ort
Co
nf
ig
ur
at
io
n
CAN Diag
Su
pp
ort
Mn
tr
Door lock
DOOR LOCK
×
×
×
×
Rear window defogger
REAR DEFOGGER
×
×
×
Warning chime
BUZZER
×
×
Interior room lamp timer
INT LAMP
×
×
×
Exterior lamp
HEADLAMP
×
×
×
Wiper and washer
WIPER
×
×
×
Turn signal and hazard warning lamps FLASHER
×
×
Air conditioner
AIR CONDITIONER
×
Intelligent Key system
INTELLIGENT KEY
×
×
×
×
Combination switch
COMB SW
×
BCM
BCM
×
×
×
×
×
Immobilizer
IMMU
×
×
×
Interior room lamp battery saver
BATTERY SAVER
×
×
Back door open
TRUNK
×
Vehicle security system
THEFT ALM
×
×
×
RAP system
RETAINED PWR
×
PCS
DIAGNOSIS SYSTEM (BCM)
PCS-39
< SYSTEM DESCRIPTION >
[POWER DISTRIBUTION SYSTEM]
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INTELLIGENT KEY
INTELLIGENT KEY : CONSULT Function (BCM - INTELLIGENT KEY)
INFOID:0000000009764051
CAUTION:
After disconnecting the CONSULT vehicle interface (VI) from the data link connector, the ignition must
be cycled OFF
→ ON (for at least 5 seconds) → OFF. If this step is not performed, the BCM may not go
to ”sleep mode”, potentially causing a discharged battery and no-start condition.
SELF DIAGNOSTIC RESULT
DATA MONITOR
Signal buffer system
SIGNAL BUFFER
×
TPMS
AIR PRESSURE MONITOR
×
×
×
×
System
Sub System
Direct Diagnostic Mode
E
cu
Id
en
tifi
ca
tio
n
Se
lf Di
ag
no
st
ic Re
su
lt
Da
ta
Mo
ni
tor
A
cti
ve
T
est
W
o
rk
su
pp
ort
Co
nf
igu
rat
ion
CAN Diag
Support Mntr
Monitor Item [Unit]
Main
Description
REQ SW -DR [On/Off]
×
Indicates condition of door request switch LH.
REQ SW -AS [On/Off]
×
Indicates condition of door request switch RH.
REQ SW -BD/TR [On/Off]
×
Indicates condition of back door request switch.
PUSH SW [On/Off]
Indicates condition of push-button ignition switch.
SHFTLCK SLNID PWR SPLY [On/Off]
×
Indicates condition of power supply to shiftlock solenoid.
BRAKE SW 1 [On/Off]
×
Indicates condition of brake switch.
BRAKE SW 2 [On/Off]
Indicates condition of brake switch.
DETE/CANCL SW [On/Off]
×
Indicates condition of P (park) position.
SFT PN/N SW [On/Off]
×
Indicates condition of P (park) or N (neutral) position.
UNLK SEN -DR [On/Off]
×
Indicates condition of door unlock sensor.
PUSH SW -IPDM [On/Off]
Indicates condition of push-button ignition switch received from IPDM E/R on
CAN communication line.
IGN RLY1 -F/B [On/Off]
Indicates condition of ignition relay 1 received from IPDM E/R on CAN commu-
nication line.
DETE SW -IPDM [On/Off]
Indicates condition of detent switch received from TCM on CAN communication
line.
SFT PN -IPDM [On/Off]
Indicates condition of P (park) or N (neutral) position from TCM on CAN com-
munication line.
SFT P -MET [On/Off]
Indicates condition of P (park) position from TCM on CAN communication line.
SFT N -MET [On/Off]
Indicates condition of N (neutral) position from IPDM E/R on CAN communica-
tion line.
ENGINE STATE [STOP/START/CRANK/
RUN]
×
Indicates condition of engine state from ECM on CAN communication line.
VEH SPEED 1 [mph/km/h]
×
Indicates condition of vehicle speed signal received from ABS on CAN commu-
nication line.
VEH SPEED 2 [mph/km/h]
×
Indicates condition of vehicle speed signal received from combination meter on
CAN communication line.
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