2007 INFINITI M35 power steering

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
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Revision: 2007 April2007 M35/M45
35 LG Vehicle speed signal Input ONAt speedometer operation (vehi-
cle speed approx. 40 km/h)
37 P CAN-LInput/
Output—— —
38 L CAN-HInput/
Output—— —
39 BR/WPush-button ignition
switchInput —Push-button ignition switch is
pressed0
Push-button ignition switch is
releasedBattery voltage
40 B Ground — — — 0
41 Y Power source (fuse) Input — — Battery voltage
42 P PDU wake up signal OutputLOCKSleep condition (30 seconds or
more after all doors are closed
under the condition that the igni-
tion switch position is in the
LOCK position)Battery voltage
—Wake-up condition (Open driver
door)0
43 G Starter signal OutputON At starter motor cranking 0
— Any condition other than above Battery voltage
46 VSteering lock control
signal-1Output—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 activating the steering
lock)
47 LGInside key antenna (+)
signal
(Instrument center)Input/
Output
LOCK Any door open → closed
(Door switch: ON → OFF)
48 VInside key antenna (–)
signal
(Instrument center)Input/
Output
49 BInside key antenna (+)
signal
(console)Input/
Output
LOCKAny door open → closed
(Door switch: ON → OFF)
50 WInside key antenna (–)
signal
(console)Input/
Output Termi-
nal
No.Wire
colorItemSignal
Input/
OutputCondition
Voltage (V)
(Approx.) Push-
button
ignition
switch
positionOperation or conditions
PKIA1935E
SIIA1910J
SIIA1910J

BL-144
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
Revision: 2007 April2007 M35/M45
51 F/LInside key antenna (+)
signal
(Rear seat)Input/
Output
LOCKAny door open → closed
(Door switch: ON → OFF)
52 R/WInside key antenna (–)
signal
(Rear seat)Input/
Output
53 G/WInside key antenna (+)
signal
(Trunk room)Input/
Output
LOCKAny door open → closed
(Door switch: ON → OFF)
54 LGInside key antenna (–)
signal
(Trunk room)Input/
Output
56 B Ground — — — 0
57 L Power source (fuse) Input — — Battery voltage
58 OA/T device (Detention
switch)Output 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
63 P Stop lamp switch Input —Brake pedal depressed Battery voltage
Brake pedal released Battery voltage
64 L/RPush-button ignition
switch illuminationOutput —Push-button ignition switch illumi-
nation is turned on2.6
Push-button ignition switch illumi-
nation is turned off
(15 seconds or more after the
driver door is closed)0
69 OSteering lock unit con-
dition signal-1InputLOCK Steering lock: Lock 0
ACC
Steering lock: UnlockBattery voltage
ON Battery voltage
70 L/YSteering lock unit con-
dition signal-2InputLOCK Steering lock: Lock Battery voltage
ACC
Steering lock: Unlock0
ON 0
71 LGSteering lock control
signal-2OutputLOCKPush-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 activating the steering
lock)
72 B Ground — — — 0 Te r m i -
nal
No.Wire
colorItemSignal
Input/
OutputCondition
Voltage (V)
(Approx.) Push-
button
ignition
switch
positionOperation or conditions
SIIA1910J
SIIA1910J

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
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Revision: 2007 April2007 M35/M45
Terminals and Reference Value for Steering Lock UnitNIS001YF
Terminals and Reference Value for BCMNIS001YG
Te r m i -
nal
No.Wire
colorItemSignal
Input/
OutputCondition
Voltage (V)
(Approx.) Push-
button
ignition
switch
positionOperation or conditions
1 GR PDU signal Input 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-1 OutputLOCK Steering lock: Lock 0
ACC
Steering lock: UnlockBattery voltage
ON Battery voltage
4P/BIntelligent Key unit
signalInput/
OutputLOCK Steering lock: Lock Battery voltage
ACC
Steering lock: Unlock0
ON 0
5 B Ground — — — 0
6 B Ground — — — 0
7 LG Power source Input LOCK — Battery voltage
8 L/Y Condition signal-2 OutputLOCK Steering lock: Lock Battery voltage
ACC
Steering lock: Unlock0
ON 0
Te r m i -
nal
No.Wire
colorItemSignal
Input/
OutputCondition
Voltage (V)
(Approx.) Push-but-
ton igni-
tion
switch
positionOperation or conditions
23 W/V Security indicator Output 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)Input LOCKIntelligent Key is removed from key
slot0
Intelligent Key is inserted into key slot Battery voltage
38 WIgnition power supply
(ON or START)Input ONPower supply position is in ON posi-
tionBattery voltage
39 L CAN-HInput/
Output—— —
40 P CAN-LInput/
Output—— —
42 P Power source (fuse) Input — — Battery voltage
52 B Ground — — — 0
55 WPower source (Fusil-
lade link)Input — — Battery voltage

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
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Revision: 2007 April2007 M35/M45
Terminals and Reference Value for PDUNIS001YI
Te r -
minal
No.Wire
colorItemSignal
Input/
OutputCondition
Voltage (V)
(Approx.) Push-
button
ignition
switch
positionOperation or conditions
1 P Wake up signal InputLOCKSleep condition (30 seconds or more
after all doors are closed under the
condition that the power supply posi-
tion is in the LOCK position)Battery voltage
— Wake-up condition (Open driver door) 0
2 G Starter control signal InputON At starter motor cranking 0
— Any condition other than above Battery voltage
3GRSteering lock unit
power sourceOutputLOCKPush-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-1Input—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
position
(Steering lock activated)Battery voltage → 0 → Bat-
tery voltage
(Battery voltage is detected
when activating the steer-
ing lock)
7LGSteering lock control
signal-2Input—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
position
(Steering lock activated)Battery voltage → 0 → Bat-
tery voltage
(Battery voltage is detected
when activating the steer-
ing lock)
9OSteering lock feed
back signalOutput— Steering lock: Lock 0
LOCK Steering lock: Unlock 8
10 B Ground — — — 0
11 YIPDM E/R current
signalOutputSTART At starter motor cranking 5
LOCK Any condition other than above 2
12 R Feed back signal OutputLOCKSleep condition (30 seconds or more
after all doors are closed under the
condition that the power supply posi-
tion is in the LOCK position)1
—Wake-up condition (any condition
other than above)0
13 R Starter relay OutputSTART At starter motor cranking Battery voltage
— Any condition other than above 4
14 SB Power source (fuse) Input — — Battery voltage
15 LPower source (fus-
ible link)Input — — Battery voltage
17 GPower source (fus-
ible link)Input — — Battery voltage

BL-154
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
Revision: 2007 April2007 M35/M45
OUTSIDE BUZZERThis test is able to check Intelligent Key warning buzzer operation.
Intelligent Key warning buzzer sounds when “ON” on CONSULT-II screen is touched.
INSIDE BUZZERThis test is able to check warning chime into combination meter operation.

Take away warning chime sounds when “TAKE OUT” on CONSULT-II screen is touched.

Key warning chime sounds when “KEY WARN” on CONSULT-II screen is touched.

P position warning chime sounds when “P RNG WARN” on CONSULT-II screen is touched.

ACC warning chime sounds when “ACC WARN” on CONSULT-II screen is touched.
INDICATORThis test is able to check warning lamp operation.

“KEY” Warning lamp illuminates when “KEY IND ON” on CONSULT-II screen is touched.

“KEY” Warning lamp flashes when “KEY IND FSH” on CONSULT-II screen is touched.
LCDThis test is able to check meter display information

Engine start information displays when “BRAKE/P” on CONSULT-II screen is touched.

Engine start information displays when “BRAKE/P/ON” on CONSULT-II screen is touched.

Key ID warning displays when “KEY ID NG” on CONSULT-II screen is touched.

Steering lock information displays when “STLCK RELES” on CONSULT-II screen is touched.

P position warning displays when “P RNG IND” on CONSULT-II screen is touched.

Intelligent Key insert information displays when “INSERT KEY” on CONSULT-II screen is
touched.

Intelligent Key low battery warning displays when “KEY BAT LOW” on CONSULT-II screen is
touched.

Take away from window warning displays when “TK AWAY WDW” on CONSULT-II screen is
touched.

Take away warning display when “TAKE AWAY” on CONSULT-II screen is touched.

OFF position warning display when “IGN OFF WARN” on CONSULT-II screen is touched.
P RANGEThis test is able to check A/T device power supply
A/T device power is supplied when “ON” on CONSULT-II screen is touched.
ENGINE SW ILLUMIThis test is able to check push-ignition switch illumination operation.
Push-ignition switch illumination illuminates when “ON” on CONSULT-II screen is touched.
LOCK INDCATORThis test is able to check LOCK indicator in push-ignition switch operation.
LOCK indicator in push-ignition switch illuminates when “ON” on CONSULT-II screen is touched.
ACC INDCATORThis test is able to check ACC indicator in push-ignition switch operation.
LOCK indicator in push-ignition switch illuminates when “ON” on CONSULT-II screen is touched.
IGNITION ON INDThis test is able to check INGITION ON indicator in push-ignition switch operation.
LOCK indicator in push-ignition switch illuminates when “ON” on CONSULT-II screen is touched.
KEY SLOT ILLUMIThis test is able to check key slot illumination operation.
Key slot illumination flash when “ON” on CONSULT-II screen is touched. Test item Description

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
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Revision: 2007 April2007 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: 2007 April2007 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 voltage
(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

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
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Revision: 2007 April2007 M35/M45
2. CHECK POWER DISTRIBUTION UNIT POWER SUPPLY
Check voltage between power distribution unit connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Check if "B2558 PDU" is displayed on self-diagnosis results. If it is displayed, first perform the
diagnosis.
3. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect power distribution unit and steering lock unit connector.
3. Check continuity between power distribution unit connector and steering lock unit connector.
4. Check continuity between power distribution unit connector and
ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harness.
Terminals
ConditionVoltage (V)
(Approx.) (+)
(–)
Power distribution
unit connectorTerminal
M30 3 GroundWhen turn ignition
switch to OFF
(steering lock oper-
ates)Battery voltage
↓
0
↓
Battery voltage
Ignition switch OFF 0
PIIB6228E
AB
Continuity
Power distribution
unit connectorTerminal Steering lock unit
connectorTerminal
M30 3 M35 1 Yes
A
GroundContinuity
Power distribution
unit connectorTerminal
M30 3 No
PIIB6229E