2006 INFINITI M35 ground

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
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Revision: 2006 January2006 M35/M45
34 R PDU feed back signalLOCKSleep condition (30 seconds or more
after all doors are closed under the
condition that the ignition switch posi-
tion is in the LOCK position)1
—Wake-up condition (any condition
other than above)0
35 LG Vehicle speed signal ONAt speedometer operation (vehicle
speed approx. 40 km/h)
37 P CAN-L — — —
38 L CAN-H — — —
39 BR/WPush-button ignition
switch—Push-button ignition switch is pressed 0
Push-button ignition switch is released Battery voltage
40 B Ground — — 0
41 Y Power source (fuse) — — Battery voltage
42 P PDU wake up signalLOCKSleep condition (30 seconds or more
after all doors are closed under the
condition that the ignition switch posi-
tion is in the LOCK position)Battery voltage
— Wake-up condition (Open driver door) 0
43 G Starter signalON At starter motor cranking 0
— Any condition other than above Battery voltage
46 VSteering lock control
signal-1—Push-button ignition switch is pressed
under the condition that Intelligent Key
is in the vehicle or Intelligent Key is
insertedBattery voltage
LOCKIgnition switch position is in LOCK
position (Steering lock activated)Battery voltage
0 Battery voltage
(Battery voltage is detected when acti-
vating the steering lock)
47 LGInside key antenna (+)
signal
(Instrument center)
LOCK Any door open
closed
(Door switch: ON
OFF)
48 VInside key antenna (–)
signal
(Instrument center)
49 BInside key antenna (+)
signal
(console)
LOCKAny door open
closed
(Door switch: ON
OFF)
50 WInside key antenna (–)
signal
(console) Te r m i -
nal
No.Wire
colorItemCondition
Voltage (V)
(Approx.) Push-
button
ignition
switch
positionOperation or conditions
PKIA1935E
SIIA1910J
SIIA1910J

BL-146
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
Revision: 2006 January2006 M35/M45
Terminals and Reference Value for Steering Lock UnitNIS001YF
51 F/LInside key antenna (+)
signal
(Rear seat)
LOCKAny door open
closed
(Door switch: ON
OFF)
52 R/WInside key antenna (–)
signal
(Rear seat)
53 G/WInside key antenna (+)
signal
(Trunk room)
LOCKAny door open
closed
(Door switch: ON
OFF)
54 LGInside key antenna (–)
signal
(Trunk room)
56 B Ground — — 0
57 L Power source (fuse) — — Battery voltage
58 OA/T device (Detention
switch)LOCKAt sleep (30 seconds or more after all
doors are closed under the condition
that the ignition switch position is in
the LOCK position)0
At wake-up (Open driver door) Battery voltage
71 LGSteering lock control
signal-2LOCKPush-button ignition switch is pressed
under the condition that Intelligent Key
is in the vehicle or Intelligent Key is
insertedBattery voltage
ACCIgnition switch position is in LOCK
position (Steering lock activated)Battery voltage
0 Battery voltage
(Battery voltage is detected when acti-
vating the steering lock)
72 B Ground — — 0 Te r m i -
nal
No.Wire
colorItemCondition
Voltage (V)
(Approx.) Push-
button
ignition
switch
positionOperation or conditions
SIIA1910J
SIIA1910J
Te r m i -
nal
No.Wire
colorItemCondition
Voltage (V)
(Approx.) Push-
button
ignition
switch
positionOperation or conditions
1 GR PDU signal LOCKPress push-button ignition switch with
Intelligent Key inside vehicle0
Battery voltage 0
(Battery voltage is detected when
pressing the push-button ignition
switch)
3 O Condition signal-1LOCK Steering lock: Lock 0
ACC
Steering lock: UnlockBattery voltage
ON Battery voltage
4 P/B Intelligent Key unit signalLOCK Steering lock: Lock Battery voltage
ACC
Steering lock: Unlock0
ON 0
5 B Ground — — 0

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
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Revision: 2006 January2006 M35/M45
Terminals and Reference Value for BCMNIS001YG
Terminals and Reference Value for IPDM E/RNIS001YH
6 B Ground — — 0
7 LG Power source LOCK — Battery voltage
8 L/Y Condition signal-2LOCK Steering lock: Lock Battery voltage
ACC
Steering lock: Unlock0
ON 0 Termi-
nal
No.Wire
colorItemCondition
Voltage (V)
(Approx.) Push-
button
ignition
switch
positionOperation or conditions
Te r m i -
nal
No.Wire
colorItemCondition
Voltage (V)
(Approx.) Push-but-
ton igni-
tion
switch
positionOperation or conditions
23 W/V Security indicator LOCKIntelligent Key is removed from key
slot and power supply position is in
LOCK positionBattery voltage
0
(Every 2.4 seconds)
37 LGKey slot
(Key switch signal)LOCKIntelligent Key is removed from key
slot0
Intelligent Key is inserted into key slot Battery voltage
38 WIgnition power supply
(ON or START)ONPower supply position is in ON posi-
tionBattery voltage
39 L CAN-H — — —
40 P CAN-L — — —
42 P Power source (fuse) — — Battery voltage
52 B Ground — — 0
55 WPower source (Fusil-
lade link)— — Battery voltage
Te r -
minal
No.Wire
ColorItemCondition
Voltage (V)
(Approx.) Push-
button
ignition
switch
positionOperation or conditions
4W/RStarter motor power
supplyLOCK — 0
START Starter motor is activating Battery voltage
49 L CAN H — — —
50 P CAN L — — —
53 GR/R Shift position signalONA/T selector lever is in N or P
positionBattery voltage
LOCKA/T selector lever is in any
position other than P and N
position0

BL-148
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
Revision: 2006 January2006 M35/M45
Terminals and Reference Value for PDUNIS001YI
Te r -
minal
No.Wire
colorItemCondition
Voltage (V)
(Approx.) Push-
button
ignition
switch
positionOperation or conditions
1 P Wake up signalLOCKSleep condition (30 seconds or more
after all doors are closed under the con-
dition that the power supply position is in
the LOCK position)Battery voltage
— Wake-up condition (Open driver door) 0
2 G Starter control signalON At starter motor cranking 0
— Any condition other than above Battery voltage
3GRSteering lock unit
power sourceLOCKPush-button ignition switch is pressed
under the condition that Intelligent Key is
in the vehicle or Intelligent Key is inserted0
Battery voltage 0
— Any condition other than above 0
6VSteering lock control
signal-1—Push-button ignition switch is pressed
under the condition that Intelligent Key is
in the vehicle or Intelligent Key is insertedBattery voltage
LOCKPower supply position is in LOCK posi-
tion
(Steering lock activated)Battery voltage
0 Battery volt-
age
(Battery voltage is detected when
activating the steering lock)
7LGSteering lock control
signal-2—Push-button ignition switch is pressed
under the condition that Intelligent Key is
in the vehicle or Intelligent Key is insertedBattery voltage
LOCKPower supply position is in LOCK posi-
tion
(Steering lock activated)Battery voltage
0 Battery volt-
age
(Battery voltage is detected when
activating the steering lock)
9OSteering lock feed
back signal— Steering lock: Lock 0
LOCK Steering lock: Unlock 8
10 B Ground — — 0
11 YIPDM E/R current sig-
nalSTART At starter motor cranking 5
LOCK Any condition other than above 2
12 R Feed back signalLOCKSleep condition (30 seconds or more
after all doors are closed under the con-
dition that the power supply position is in
the LOCK position)1
—Wake-up condition (any condition other
than above)0
13 R Starter relaySTART At starter motor cranking Battery voltage
— Any condition other than above 4
14 SB Power source (fuse) — — Battery voltage
15 LPower source (fusible
link)— — Battery voltage
17 GPower source (fusible
link)— — Battery voltage

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
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Revision: 2006 January2006 M35/M45
DTC B2013 STRG COMM 1NIS001YN
DIAGNOSIS DESCRIPTION
B2013 steering lock communication malfunction monitors the communication condition between Intelligent
Key unit and steering lock unit. If the reply from the steering lock unit against the communication from Intelli-
gent Key unit does not come twice continuously, Intelligent Key unit judges that it is the malfunction and dis-
plays the DTC (Diagnostic Trouble Code).
TERMINALS AND REFERENCE VALUE FOR INTELLIGENT KEY UNIT
SELF-DIAGNOSTIC LOGIC
DIAGNOSTIC PROCEDURE
1. CHECK STEERING LOCK UNIT POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect steering lock unit connector.
3. Check voltage between steering lock unit connector and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
Te r m i -
nal
No.Wire
colorItemCondition
Voltage (V)
(Approx.) Push-
button
ignition
switch
positionOperation or conditions
15 LGSteering lock unit
power sourceLOCK — Battery voltage
16 P/BSteering lock unit sig-
nalLOCK Steering lock: Lock Battery voltage
ACCSteering lock: Unlock
(Unlocked moment)0
DTCSelf-diagnosis
nameDTC detecting condition Possible causes
B2013 STRG COMM 1There is no replay from the steering lock
unit against the communication from Intelli-
gent Key unit.
Harness and connector
(Open or shorted in the circuit between Intelligent
Key unit and steering lock unit)
Steering lock unit power supply circuit
Steering lock unit
Terminals
Voltage (V)
(Approx.) (+)
(–)
Steering lock unit
connectorTerminal
M35 7 Ground Battery voltage
PIIB6223E

BL-158
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
Revision: 2006 January2006 M35/M45
2. CHECK HARNESS CONTINUITY 1
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit connector and steering lock unit connector.
3. Check continuity between Intelligent Key unit connector and
ground.
OK or NG
OK >> Check the condition of harness and connector.
NG >> Repair or replace harness.
3. CHECK STEERING LOCK UNIT SIGNAL
1. Connect steering lock unit connector.
2. Check voltage between steering lock unit connector and ground.
OK or NG
OK >> Replace steering lock unit.
NG >> GO TO 4.
AB
Continuity
Intelligent Key
unit connectorTe r m i n a l Steering lock unit
connectorTerminal
M32 15 M35 7 Yes
A
GroundContinuity
Intelligent Key
unit connectorTerminal
M32 15 No
PIIB6224E
Te r m i n a l s
ConditionVoltage (V)
(Approx.) (+)
(–)
Steering lock
unit connectorTerminal
M35 4 GroundWhen turn igni-
tion switch to
START with
Intelligent Key in
the carBattery voltage
0
Battery voltage
PIIB6225E

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
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Revision: 2006 January2006 M35/M45
4. CHECK HARNESS CONTINUITY 2
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit and steering lock unit connector.
3. Check continuity between Intelligent Key unit connector and steering lock unit connector.
4. Check continuity between 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 >> Repair or replace harness.
DTC B2551 STEERING LOCK UNITNIS001YO
DIAGNOSIS DESCRIPTION
Though the communication between the Intelligent Key unit and the steering lock unit is normal, when the
steering lock/unlock is not normal, B2551 steering lock unit malfunction judges that it is the malfunction and
displays the DTC (Diagnostic Trouble Code)
TERMINALS AND REFERENCE VALUE
Intelligent Key Unit
AB
Continuity
Intelligent Key
unit connectorTerminal Steering lock unit
connectorTerminal
M32 16 M35 4 Yes
A
GroundContinuity
Intelligent Key unit
connectorTerminal
M32 16 No
PIIB6226E
Te r m i -
nal
No.Wire
colorItemCondition
Voltage (V)
(Approx.) Push-
button
ignition
switch
positionOperation or conditions
17 OSteering lock unit con-
dition signal-1LOCK Steering lock: Lock 0
ACC
Steering lock: UnlockBattery voltage
ON Battery voltage
18 L/YSteering lock unit con-
dition signal-2LOCK Steering lock: Lock Battery voltage
ACC
Steering lock: Unlock0
ON 0
71 LG PDU signalLOCK Steering lock: Lock Battery voltage
ACC Steering lock: Unlocked moment 0

BL-160
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
Revision: 2006 January2006 M35/M45
PDU (Power Distribution Unit)
SELF-DIAGNOSTIC LOGIC
DIAGNOSTIC PROCEDURE
1. CHECK STEERING LOCK SIGNAL
Check voltage between power distribution unit connector and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 4.
Te r -
minal
No.Wire
colorItemCondition
Voltage (V)
(Approx.) Push-
button
ignition
switch
positionOperation or conditions
3GRSteering lock unit
power sourceLOCKPush-button ignition switch is pressed
under the condition that Intelligent Key is
in the vehicle or Intelligent Key is inserted0
Battery voltage 0
— Any condition other than above 0
7LGSteering lock control
signal-2—Push-button ignition switch is pressed
under the condition that Intelligent Key is
in the vehicle or Intelligent Key is insertedBattery voltage
LOCKPower supply position is in LOCK posi-
tion
(Steering lock activated)Battery voltage
0 Battery volt-
age
(Battery voltage is detected when
activating the steering lock)
DTC Self-diagnosis name DTC detecting condition Possible causes
B2551STEERING LOCK
UNITThough the communication between the
Intelligent Key and the steering lock unit
is normal, the steering lock unit condition
signal is NG
Harness and connector
(Open or shorted in the circuit between the
units)
Steering lock unit
Te r m i n a l s
ConditionVoltage (V)
(Approx.) (+)
(–)
Power distribu-
tion unit connectorTerminal
M306
GroundWhen turn ignition
switch to START
with Intelligent Key
in the carBattery voltage
7
6
When turn ignition
switch to OFF
(steering lock
operates) Battery voltage
0
Battery voltage 7
PIIB6227E