Infiniti M35/M45 Y50. Manual — part 974
PDU (POWER DISTRIBUTION UNIT)
PG-41
C
D
E
F
G
H
I
J
L
M
A
B
PG
Check Push-Button Ignition Switch (Indicator Circuit) System
NKS004EN
1.
CHECK PUSH-BUTTON IGNITION SWITCH INDICATOR SYSTEM
1.
Turn ignition switch OFF.
2.
Check voltage between Intelligent Key unit connector and
ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace push-button ignition switch.
2.
PUSH-BUTTON IGNITION SWITCH INDICATOR POWER SUPPLY SIGNAL
1.
Turn ignition switch OFF.
2.
Disconnect push-button ignition switch.
3.
Check voltage between push-button ignition switch connector
and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace push-button ignition switch.
Intelligent
Key unit
connector
Terminal
Push-button ignition
switch condition
Voltage (V)
(Approx)
(+)
(-)
M32
8
Ground part of
push-button
ignition switch
LOCK position
0
Except LOCK position
1.2
9
ACC position
0
Except ACC position
1.2
10
ON position
0
Except ON position
1.2
PIIB6121E
Push-button ignition
switch connector
Terminal
Voltage (V)
(Approx)
(+)
(-)
M27
8
Ground
Battery voltage
PIIB6122E
PG-42
PDU (POWER DISTRIBUTION UNIT)
3.
PUSH-BUTTON IGNITION SWITCH INDICATOR GROUND CIRCUIT
1.
Disconnect Intelligent Key unit connector.
2.
Check continuity between Intelligent Key unit connector and
push-button ignition switch connector.
3.
Check continuity between push-button ignition switch connector.
OK or NG
OK
>> Check harness condition.
NG
>> Repair or replace harness.
PDU Communication Circuit System 1
NKS004EO
1.
CHECK PDU COMMUNICATION CIRCUIT 1
1.
Turn ignition switch OFF.
2.
Check voltage between Intelligent Key unit connector and
ground.
OK or NG
OK
>> Check harness condition.
NG
>> GO TO 2.
A
B
Continuity
Intelligent Key
unit connector
Terminal
Push-button
ignition switch
connector
Terminal
M32
8
M27
5
Yes
9
6
10
7
Push-button ignition
switch connector
Terminal
Continuity
M27
5
Ground
No
6
7
PIIB6123E
Intelligent Key
unit connector
Terminal Condition
Voltage (V)
(Approx)
M33
42
Ground
Driver side door is opened
(PDU wake up mode)
0
Push-button ignition switch is in
lock state, 30 seconds after all
doors are closed (PDU sleep
mode)
Battery
voltage
45
Ground
Push-button ignition switch is in
LOCK position
Battery
voltage
Push-button ignition switch is in
ACC position
0
Push-button ignition switch is in
ON position
0
PIIB6124E
PDU (POWER DISTRIBUTION UNIT)
PG-43
C
D
E
F
G
H
I
J
L
M
A
B
PG
2.
CHECK PDU SIGNAL CIRCUIT
1.
Disconnect Intelligent Key unit, PDU connector.
2.
Check continuity between Intelligent Key unit connector and
PDU harness side connector.
3.
Check continuity between PDU connector and ground.
OK or NG
OK
>> Replace Intelligent Key.
NG
>> Check harness condition between Intelligent Key unit and PDU.
PDU Communication Circuit System 2
NKS004EP
1.
CHECK PDU COMMUNICATION CIRCUIT 2
1.
Turn ignition switch OFF.
2.
Check voltage between Intelligent Key unit connector while
operating push-button ignition switch.
OK or NG
OK
>> Check connector condition.
NG
>> GO TO 2.
2.
CHECK PDU SIGNAL CIRCUIT
1.
Disconnect Intelligent Key unit, PDU connectors.
2.
Check continuity between Intelligent Key unit connector and
PDU connector.
3.
Check continuity between PDU connector and ground.
OK or NG
OK
>> Replace Intelligent Key unit.
NG
>> Repair or replace harness between Intelligent Key unit or PDU.
A
B
Continuity
PDU connector
Terminal
Intelligent Key unit
connector
Terminal
M30
1
M33
42
Yes
8
45
PDU connector
Terminal
Continuity
M30
1
Ground
No
8
PIIB6125E
Intelligent Key
unit connector
Terminal
Push-button igni-
tion switch posi-
tion
Voltage (V)
(Approx)
(+)
(-)
M33
44
Ground part of
push-button
ignition switch
LOCK position
12
ACC position
12
ON position
0
PIIB6126E
A
B
Continuity
PDU connec-
tor
Terminal
Intelligent Key
unit connector
Terminal
M30
4
M33
44
Yes
PDU connector
Terminal
Continuity
M30
4
Ground
No
PIIB6127E
PG-44
PDU (POWER DISTRIBUTION UNIT)
Removal and Installation of PDU
NKS004EQ
REMOVAL
1.
Removal the combination meter. Refer to
DI-27, "Removal and Installation of Combination Meter"
2.
Disconnect PDU unit connector, remove screw and PDU.
INSTALLATION
Installation is in the reverse order of removal.
PIIB6281E
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