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
Ignition relay (Built-in IPDM E/R)
Ignition relay (Built-in fuse block)
Accessory relay
Blower relay
Stop lamp
Park/neutral position switch
Clutch switch
Push-button ignition switch
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