Infiniti M35/M45 Y50. Manual — part 973
PDU (POWER DISTRIBUTION UNIT)
PG-37
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Terminals and Reference Value for PDU
NKS004EH
Work Flow
NKS004EI
1.
Check the symptom and customer's requests.
2.
Understand outline of system. Refer to
3.
Confirm that Intelligent Key system operates normally.
Refer to
BL-24, "POWER DOOR LOCK SYSTEM"
.
4.
Repair or replace any malfunctioning parts.
Refer to
PG-38, "Trouble Diagnosis Symptom Chart"
.
5.
INSPECTION END
57
L
Power source (Fuse)
Input
LOCK
—
Battery voltage
72
B
Ground
—
—
—
0
Termi-
nal
Wire
Color
Item
Signal
Input/
Output
Condition
Voltage (V)
Approx.
Ignition
Switch
Position
Operation or Conditions
Termi-
nal
Wire
Color
Item
Signal
Input/
Output
Condition
Voltage (V)
Approx.
Ignition
Switch
Position
Operation or Conditions
1
P
PDU wake up signal
Output
LOCK
Push-button ignition switch is in LOCK
state, 30 seconds after all doors close
Battery voltage
Other than above
0
4
BR
Ignition signal 1
Output
LOCK
—
Battery voltage
ACC
—
Battery voltage
ON
—
0
5
W
Ignition signal 2
Output
LOCK
—
Battery voltage
ACC
—
Battery voltage
ON
—
0
8
SB
ACC signal
Output
LOCK
—
Battery voltage
ACC
—
0
ON
—
0
10
B
Ground
—
—
—
0
11
Y
IPDM E/R status signal
Input
—
Engine starting (During Cranking)
5
Other than above
2
12
R
PDU feedback signal
Input
LOCK
Push-button ignition switch is in LOCK
state, 30 seconds after all doors close
1
Other than above
0
14
SB
Power source (Fuse)
Input
LOCK
—
Battery voltage
15
L
Power source (F/L)
Input
LOCK
—
Battery voltage
16
W
ACC power output
Output
LOCK
—
0
ACC
—
Battery voltage
ON
—
Battery voltage
17
G
Power source (Fuse)
Input
LOCK
—
Battery voltage
18
BR
ON power output
Output
LOCK
—
0
ACC
—
0
ON
—
Battery voltage
PG-38
PDU (POWER DISTRIBUTION UNIT)
Trouble Diagnosis Symptom Chart
NKS004EJ
Before performing the diagnosis in the following table, check the contents of
Check CAN Communication System
NKS004EK
1.
CHECK SELF-DIAGNOSTIC RESULTS
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which performs CAN communication.
With CONSULT-II
●
Connect CONSULT-II, and turn ignition switch ON.
●
Touch “INTELLIGENT KEY” on “SELECT SYSTEM” screen.
●
Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
●
Check display content in self-diagnostic results.
OK or NG
NO DTC IS DETECTED>> INSPECTION END
CAN COMM CIRCUIT [U1000]>> After printing “SELF-DIAGNOSIS RESULTS”, go to “CAN SYSTEM”,
Refer to
LAN-42, "Precautions When Using CONSULT-II"
CONTROL UNIT (CAN) [U1010]>> Replace Intelligent Key unit.
Symptom
Suspect Systems
Refer to
Even if the push-button ignition switch is pressed, the
power supply position and the push-button ignition switch
position indicator does not response.
1. Check push-button ignition switch (ignition switch)
system
2. Replace Intelligent Key unit
The push-button ignition switch position indicator turns
on synchronizing with the push-button ignition switch
operation. But the actual power supply is not input.
1. Check PDU power supply and ground circuit system
2. Check PDU communication circuit system 1
3. Replace PDU
The push-button ignition switch position indicator turns
on synchronizing with the push-button ignition switch
operation. But the actual ON power supply is not input.
(ACC power supply input is normal.)
1. Check PDU communication circuit system 2
2. Replace PDU
The power supply changing operation is normal. But the
push-button ignition switch position indicator does not
turn on.
1. Check push-button ignition switch (indicator circuit)
system
2. Replace Intelligent Key unit
CONSULT-II display item
DTC code
NO DTC IS DETECTED
—
CAN COMM CIRCUIT
U1000
CONTROL UNIT (CAN)
U1010
PDU (POWER DISTRIBUTION UNIT)
PG-39
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PG
Check PDU Power Supply and Ground Circuit
NKS004EL
1.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect PDU connector.
3.
Check voltage between PDU harness connector and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace PDU power supply circuit.
2.
CHECK GROUND CIRCUIT
Check continuity between PDU harness connector and ground.
OK or NG
OK
>> Power supply and ground circuits are OK.
NG
>> Repair or replace the PDU ground circuit.
Check Push-Button Ignition Switch (Ignition Switch) System
NKS004EM
1.
CHECK PUSH-BUTTON IGNITION SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect Intelligent Key unit connector.
3.
Check continuity between Intelligent Key unit harness connector
and ground.
OK or NG
OK
>> Push-button ignition switch system is OK.
NG
>> GO TO 2.
PDU connector
Terminal
Voltage (V)
(Approx.)
(+)
(-)
M31
14
Ground
Battery voltage
15
17
PIIB6115E
PDU connector
Terminal
Continuity
M30
10
Ground
Yes
PIIB6116E
Intelligent
Key unit
connector
Terminal
Condition
Continuity
M32
39
Ground
Push-button ignition
switch is pressed
Yes
Push-button ignition
switch is released
No
PIIB6117E
PG-40
PDU (POWER DISTRIBUTION UNIT)
2.
CHECK PUSH-BUTTON IGNITION SWITCH OPERATION
1.
Turn ignition switch OFF.
2.
Check continuity push-button ignition switch connector.
OK or NG
OK
>> GO TO 3.
NG
>> Replace push-button ignition switch.
3.
CHECK PUSH-BUTTON IGNITION SWITCH GROUND CIRCUIT SYSTEM
Check continuity between push-button ignition switch harness con-
nector and ground.
OK or NG
OK
>> GO TO 4.
NG
>> Repair or replace push-button ignition switch ground cir-
cuit.
4.
CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT
1.
Disconnect Intelligent Key unit connector.
2.
Check continuity between Intelligent Key unit harness connector and push-button switch harness connec-
tor.
3.
Check continuity between push-button ignition switch harness
connector and ground.
OK or NG
OK
>> GO TO 5.
NG
>> Repair or replace harness between Intelligent Key unit and ignition switch.
Push-button
ignition
switch con-
nector
Terminal
Condition
Continuity
M27
1
4
Push-button ignition
switch is pressed
Yes
Push-button ignition
switch is released
No
PIIB6118E
Push-button ignition
switch connector
Terminal
Continuity
M27
1
Ground part of
push-button
ignition switch
Yes
PIIB6120E
A
B
Continuity
Push-button
ignition switch
connector
Terminal
Intelligent Key
unit connector
Terminal
M27
4
M32
39
Yes
Push-button ignition
switch connector
Terminal
Continuity
M27
4
Ground
No
PIIB6119E
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