Infiniti M35/M45 Y50. Manual — part 275
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
BL-169
C
D
E
F
G
H
J
K
L
M
A
B
BL
2.
CHECK HARNESS CONTINUITY
1.
Turn ignition switch OFF.
2.
Disconnect Intelligent Key unit and unified meter and A/C amp. Connector.
3.
Check continuity between Intelligent Key unit connector and unified meter and A/C amp. Connector.
4.
Check continuity between Intelligent Key unit connector and
ground.
OK or NG
OK
>>
●
If the measured value is not waveform but 0V con-
stant, the harness or connector between the using
receiving the vehicle speed signal from unified meter
and A/C amp. may be malfunctioning. Check these
wirings.
●
If the measured value is not waveform but 5V or 12V
constant, replace unified meter and A/C amp.
NG
>> Repair or replace harness.
A
B
Continuity
Intelligent Key
unit connector
Terminal
Unified meter and
A/C amp.
connector
Terminal
M32
35
M64
28
Yes
A
Ground
Continuity
Intelligent Key unit connector
Terminal
M32
35
No
PIIB6243E
BL-170
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
DTC B2558 SHIFT POSITION
NIS001YV
DIAGNOSIS DESCRIPTION
B2558 shift position input system monitors the A/T selector lever position. If there is the difference between
the input from A/T device, the input from A/T assembly, and CAN communication input from A/T control unit, it
judges that it is the malfunction and displays the DTC (Diagnostic Trouble Code)
TERMINALS AND REFERENCE VALUE FOR INTELLIGENT KEY UNIT
SELF-DIAGNOSTIC LOGIC
DIAGNOSTIC PROCEDURE
1.
CHECK A/T DEVICE SIGNAL
1.
Turn ignition switch ON.
2.
Check voltage between Intelligent Key unit connector and ground.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 2.
Termi-
nal
No.
Wire
color
Item
Condition
Voltage (V)
(Approx.)
Push-
button
ignition
switch
position
Operation or conditions
27
V
A/T device (Detention
switch)
LOCK
A/T selector lever is in P position
0
ON
A/T selector lever is in any position
other than P
Battery voltage
28
SB
Starter relay
ON
A/T selector lever is in N or P position
Battery voltage
—
Power supply position is in LOCK
position or A/T selector lever is in any
position other than N or P position
0
58
O
A/T device (Detention
switch)
LOCK
At sleep (30 seconds or more after all
doors are closed under the condition
that the power supply position is in the
LOCK position)
0
—
At wake-up (Open driver door)
Battery voltage
DTC
Self-diagnosis name
DTC detecting condition
Possible causes
B2558
SHIFT POSITION
There is an input difference of A/T selector
lever position input to Intelligent Key unit for 2
seconds or more
●
Harness and connector
(Open in the circuit between the units)
●
A/T device (detent switch)
●
A/T assembly (control valve assembly)
Terminals
A/T con-
trol device
position
Voltage (V)
(Approx.)
(+)
(–)
Intelligent Key unit
connector
Terminal
M32
27
Ground
P
0
Other than
above
Battery voltage
PIIB6244E
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
BL-171
C
D
E
F
G
H
J
K
L
M
A
B
BL
2.
CHECK HARNESS CONTINUITY 1
1.
Turn ignition switch OFF.
2.
Disconnect Intelligent Key unit and A/T device connector.
3.
Check continuity between Intelligent Key unit connector and A/T device connector.
4.
Check continuity between Intelligent Key unit connector and
ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness.
3.
CHECK A/T DEVICE
Check A/T device.
OK or NG
OK
>> Check the condition of harness and connector. If it is
OK, check the self-diagnosis results using CONSULT-II
again.
NG
>> Replace A/T device.
A
B
Continuity
Intelligent Key
unit connector
Terminal
A/T device
connector
Terminal
M32
27
M133
10
Yes
M33
58
9
A
Ground
Continuity
Intelligent Key unit connector
Terminal
M32
27
No
M33
58
PIIB6245E
Terminal
A/T control device
position
Continuity
A/T device
9
10
P
Yes
Other than above
No
PIIB6246E
BL-172
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
4.
CHECK TCM SIGNAL
Check Intelligent Key unit connector and ground.
OK or NG
OK
>> Check the condition of harness and connector. If it is
OK, check the self-diagnosis results using CONSULT-II
again.
NG
>> GO TO 5.
5.
CHECK HARNESS CONTINUITY 2
1.
Turn ignition switch OFF.
2.
Disconnect Intelligent Key unit and TCM connector.
3.
Check continuity between Intelligent Key unit connector and TCM connector.
4.
Check continuity between Intelligent Key unit connector and
ground.
OK or NG
OK
>> Replace TCM.
NG
>> Repair or replace harness.
DTC B2559 PDU
NIS001YW
DIAGNOSIS DESCRIPTION
B2559 PDU system that is Intelligent Key unit judges NG by self-detecting the PDU (Power Distribution Unit)
internal malfunction.
If this DTC (Diagnostic Trouble Code) is displayed, replace the PDU.
DTC B2560 START POW SUP CIRC
NIS001YX
DIAGNOSIS DESCRIPTION
B2560 starter power supply system monitors the power supply condition to the starter motor relay and the
starter motor relay condition in IPDM E/R. If it detects the starter motor relay ON condition in IPDM E/R without
the “Engine start” request from the Intelligent Key unit, it judges that it is the malfunction and displays the DTC
(Diagnostic Trouble Diagnosis).
Terminals
A/T con-
trol device
position
Voltage (V)
(Approx.)
(+)
(–)
Intelligent Key unit
connector
Terminal
M32
28
Ground
N or P
Battery voltage
Other than
above
0
PIIB6247E
A
B
Continuity
Intelligent Key
unit connector
Terminal
TCM connector
Terminal
M32
28
F502
8
Yes
A
Ground
Continuity
Intelligent Key unit connector
Terminal
M32
28
No
PIIB6248E
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