2007 INFINITI M35 MOTOR

ATC-140
AIR MIX DOOR MOTOR
Revision: 2007 April2007 M35/M45
AIR MIX DOOR MOTOR PFP:27732
Removal and InstallationNJS000HI
REMOVAL
Driver Side
1. Set the temperature control switch (driver side) at 18°C (60°F), and then disconnect the battery cable from
the negative terminal.
2. Remove heater & cooling unit assembly. Refer to ATC-134, "
HEATER & COOLING UNIT ASSEMBLY" .
3. Remove mounting screws, and then remove air mix door motor.
4. Disconnect air mix door motor connector.
Passenger Side
1. Set the temperature control switch (passenger side) at 18°C (60°F), and then disconnect the battery cable
from the negative terminal.
2. Remove blower unit. Refer to ATC-129, "
BLOWER UNIT" .
3. Remove mounting screws, and then remove air mix door motor.
4. Disconnect air mix door motor connector.
INSTALLATION
Installation is basically the reverse order of removal.
RJIA4126E
RJIA4125E

UPPER VENTILATOR DOOR MOTOR
ATC-141
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2007 April2007 M35/M45
UPPER VENTILATOR DOOR MOTORPFP:27731
Removal and InstallationNJS000HJ
REMOVAL
1. Remove heater & cooling unit assembly. Refer to ATC-134, "HEATER & COOLING UNIT ASSEMBLY" .
2. Remove mounting screws.
3. Disconnect upper ventilator door motor connector.
4. Disconnect upper ventilator door rod, and then remove upper
ventilator door motor.
INSTALLATION
Installation is basically the reverse order of removal.
RJIA4127E

ATC-148
DUCTS AND GRILLES
Revision: 2007 April2007 M35/M45
Removal of Foot Grilles
1. Remove mounting clips, and then remove foot grille (left).
2. Remove mounting clips, and then remove foot grille (right).
Removal of Foot Ducts
1. Remove instrument driver lower panel. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
2. Remove mounting screws, and then remove heater pipe cover.
3. Remove mounting screws, and then remove foot duct (left).
4. Remove blower unit. Refer to ATC-129, "
BLOWER UNIT" .
5. Remove air mix door motor (passenger side). Refer to ATC-140, "
AIR MIX DOOR MOTOR" .
6. Remove mode door motor (passenger side). Refer to ATC-139, "
MODE DOOR MOTOR" .
7. Remove mounting screws, and then remove evaporator cover.
8. Remove mounting screws, and then remove foot duct (right).
RJIA4143E
RJIA4144E
RJIA4145E
RJIA4146E

REFRIGERANT LINES
ATC-161
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2007 April2007 M35/M45
Removal and Installation of Low-pressure Pipe 1 and High-pressure Pipe 2NJS000HS
REMOVAL
1. Set the temperature control switch (passenger side) at 18°C (60°F), and then disconnect the battery cable
from the negative terminal.
2. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
3. Remove cowl top cover. Refer to EI-18, "
COWL TOP" .
4. Remove mounting bolt from low-pressure flexible hose bracket.
5. Remove high-pressure pipe 1 from vehicle clip.
6. Disconnect one-touch joints.
a. Set a disconnector [high-pressure side (SST: 9253089908), low-
pressure side (SST: 9253089916)] on A/C piping.
b. Slide a disconnector toward vehicle front until it clicks.
c. Slide A/C piping toward vehicle front and disconnect it.
CAUTION:
Cap or wrap the joint of low-pressure flexible hose, low-
pressure pipe 1 and high-pressure pipe 1, 2 with suitable
material such as vinyl tape to avoid the entry of air.
7. Remove instrument passenger lower panel and glove box. Refer
to IP-10, "
INSTRUMENT PANEL ASSEMBLY" .
8. Remove foot grille (right). Refer to ATC-148, "
Removal of Foot Grilles" .
9. Remove air mix door motor (passenger side). Refer to ATC-140, "
AIR MIX DOOR MOTOR" .
10. Remove mode door motor (passenger side). Refer to ATC-139, "
MODE DOOR MOTOR" .
11. Remove main link (right) and max. cool door link (right). Refer to ATC-134, "
HEATER & COOLING UNIT
ASSEMBLY" .
12. Remove mounting screws, and then remove evaporator cover.
RJIA4169E
RJIA4117E
RJIA4170E

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
BL-127
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: 2007 April2007 M35/M45
PRECAUTIONS FOR INTELLIGENT KEY SYSTEM

In the Intelligent Key system of model Y50, the transponder (the chip for immobilizer ID verifica-
tion) is integrated into the Intelligent Key. (For the conventional models, it is integrated into the
mechanical key.) Therefore, the mechanical key cannot perform the ID verification, and thus it can-
not start the engine. Instead of it, the immobilizer ID verification can be performed by inserting the
Intelligent Key into the key slot, and then it can start the engine.

When registering the Intelligent Key, 2 registration procedures (immobilizer ID registration and
Intelligent Key ID registration) should be performed. The immobilizer ID registration is the proce-
dure that registers the ID stored into the transponder (integrated into Intelligent Key) to the BCM.
The Intelligent Key ID registration is the procedure that registers the ID to the Intelligent Key unit.
Each registration is a different procedure.

When performing the Intelligent Key ID registration only, the engine cannot be started by inserting
the key into the key slot. When performing the engine immobilizer ID registration only, the engine
cannot be started by the operation when carrying the key. The registrations of both systems
should be performed.
Operation DescriptionNIS001Y9
SYSTEM DIAGRAM
OPERATION WHEN INTELLIGENT KEY IS CARRIED
Description
1. When the push-button switch is pressed, the Intelligent Key unit signals the inside key antenna and sends
the request signal to the Intelligent Key.
2. The Intelligent Key receives the request signal and sends the Intelligent Key ID signal to the Intelligent
Key unit via the remote keyless entry receiver.
3. The Intelligent Key receives the Intelligent Key ID signal and verifies it with the registered ID.
4. If the ID is successfully verified, the Intelligent Key unit sends the steering unlock signal to the steering
lock unit. Then, it sends each power supply request signal to PDU (Power Distribution Unit) after unlock-
ing the steering lock.
5. If the Intelligent Key unit judges that the engine start condition is satisfied, it sends the starter request sig-
nal via CAN communication to IPDM E/R and turns the starter motor relay ON.
6. The steering lock unit unlocks the steering lock when receiving the signal. PDU starts the power supply
distribution according to the push-button ignition switch operation when receiving the signal. If it enters the
engine start permission mode, the power supply is supplied from PDU to the starter motor relay and the
cranking is started.
CAUTION:
If a malfunction is detected in the Intelligent Key system, the “KEY” warning lamp in the combina-
tion meter illuminates for 15 seconds. At that time, the engine cannot be started.
7. When Intelligent Key unit received feedback signal from ECM acknowledging the engine has been initi-
ated, the Intelligent Key unit sends a stop signal to IPDM E/R and stops the cranking by turning OFF the
PIIB6272E

BL-128
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
Revision: 2007 April2007 M35/M45
starter motor relay. (If the engine initiating has failed, the cranking will stop automatically within 5 sec-
onds.)
CAUTION:
When the Intelligent Key is carried outside of the vehicle (inside key antenna detection area) with
the power supply in ACC or ON position, even if the engine start condition* is satisfied, the engine
cannot be started.
*: For the engine start condition, refer to BL-128, "
PUSH-BUTTON IGNITION SWITCH OPERATION PROCE-
DURE" .
Operation Range
Engine can be started when Intelligent Key is inside the vehicle. However, sometimes engine might not start
when Intelligent Key is on instrument panel or in glove box.
OPERATION WHEN KEY SLOT IS USED
When the Intelligent Key battery is discharged, it performs the immobilizer ID verification between the inte-
grated transponder and BCM by inserting the Intelligent Key into the key slot, and then the engine can be
started.
For details relating to starting the engine using key slot, refer to BL-244, "
IVIS (INFINITI VEHICLE IMMOBI-
LIZER SYSTEM-NATS)" .
PUSH-BUTTON IGNITION SWITCH OPERATION PROCEDURE
The power supply position changing operation can be performed with the following operation.
NOTE:

When an Intelligent Key is within the detection area of inside key antenna and when it is inserted to the
key slot, it is equivalent to the operations below.

When starting the engine, the Intelligent Key unit monitors the engine start conditions (brake pedal operat-
ing condition, A/T selector lever position, and vehicle speed).

Unless each start condition is fulfilled, the engine will not respond regardless of how many times the
engine switch is pushed. At that time, illumination repeats the position in the order of LOCK→AC-
C→ON→LOCK.
Power supply positionEngine start/stop condition
Push-button ignition switch
operation frequency
Brake pedal A/T selector lever position
LOCK → ACCNot depressed
(When A/T selector lever is in any
position other than P or N, there
will be no effect even if it is
depressed.)Any position other than P or N
(When the brake pedal is not
depressed, there will be no effect
even if the A/T selector lever is in
P or N position.)1
LOCK → ACC → ONNot depressed
(When A/T selector lever is in any
position other than P or N, there
will be no effect even if it is
depressed.)Any position other than P or N
(When the brake pedal is not
depressed, there will be no effect
even if the A/T selector lever is in
P or N position.)2
LOCK → ACC → ON →
LOCKNot depressed
(When A/T selector lever is in any
position other than P or N, there
will be no effect even if it is
depressed.)Any position other than P or N
(When the brake pedal is not
depressed, there will be no effect
even if the A/T selector lever is in
P or N position.)3
LOCK → START
ACC → START
ON → START
(Engine start)Depressed P or N position (*1)1
[If the switch is pushed once,
the engine starts from any
power supply position (LOCK,
ACC, and ON)]
Engine is running →
LOCK
(Engine stop)— P position 1

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
BL-143
C
D
E
F
G
H
J
K
L
MA
B
BL
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-146
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
Revision: 2007 April2007 M35/M45
Terminals and Reference Value for IPDM E/RNIS001YH
Te r -
minal
No.Wire
ColorItemSignal
Input/
OutputCondition
Voltage (V)
(Approx.) Push-
button
ignition
switch
positionOperation or conditions
4 W/R Starter motor power supply InputLOCK — 0
START Starter motor is activating Battery voltage
49 L CAN HInput/
Output—— —
50 P CAN LInput/
Output—— —
53 GR/R Shift position signal InputONA/T selector lever is in N or P
positionBattery voltage
LOCKA/T selector lever is in any
position other than P and N
position0