Nissan Altima L32. Instruction — part 1266
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< BASIC INSPECTION >
[SEDAN WITH INTELLIGENT KEY]
INSPECTION AND ADJUSTMENT
INSPECTION AND ADJUSTMENT
ECM RE-COMMUNICATING FUNCTION
ECM RE-COMMUNICATING FUNCTION : Description
INFOID:0000000004206171
Performing following procedure can automatically perform re-communication of ECM and BCM, but only when
the ECM has been replaced with a new one (*1).
*1: New one means an ECM which has never been energized on-board.
(In this step, initialization procedure by CONSULT-III is not necessary)
NOTE:
• When registering new Key IDs or replacing the ECM that is not brand new, refer to CONSULT-III Oper-
ation Instruction.
• If multiple keys are attached to the key holder, separate them before work.
• Distinguish keys with unregistered key ID from those with registered ID.
ECM RE-COMMUNICATING FUNCTION : Special Repair Requirement
INFOID:0000000004206172
1.
PERFORM ECM RE-COMMUNICATING FUNCTION
1. Install ECM.
2. Insert the registered Intelligent Key (*2), turn ignition switch to “ON”.
*2: To perform this step, use the key that has been used before performing ECM replacement.
3. Maintain ignition switch in “ON” position for at least 5 seconds.
4. Turn ignition switch to “OFF”.
5. Start engine.
Can engine be started?
YES
>> Procedure is completed.
NO
>> Initialize control unit. Refer to CONSULT-III Operation Instruction.
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
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FUNCTION DIAGNOSIS
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
System Diagram
INFOID:0000000004206173
System Description
INFOID:0000000004206174
INPUT/OUTPUT SIGNAL CHART
SYSTEM DESCRIPTION
• The engine start function of Intelligent Key system is a system that makes it possible to start and stop the
engine without removing the key. It verifies the electronic ID using two-way communications when pressing
the push-button ignition switch while carrying the Intelligent Key, which operates based on the results of
electronic ID verification for Intelligent Key using two-way communications between the Intelligent Key and
the vehicle.
NOTE:
The driver should carry the Intelligent Key at all times.
• Intelligent Key has 2 IDs [for Intelligent Key and for NVIS (NATS)]. It can perform the door lock/unlock oper-
ation and the push-button ignition switch operation when the registered Intelligent Key is carried.
• When the Intelligent Key battery is discharged, it can be used as emergency back-up by inserting the Intelli-
gent Key to the key slot. At that time, perform the NVIS (NATS) ID verification. If it is used when the Intelli-
gent Key is carried, perform the Intelligent Key ID verification.
• If the ID is successfully verified, and when push-button ignition switch is pressed, steering lock will be
released and initiating the engine will be possible.
• If the door lock/unlock operation is performed when the Intelligent Key battery is discharged, all doors lock/
unlock can be performed by operating the driver door key cylinder using the mechanical key set in the Intel-
ligent Key.
ALKIA1292GB
Switch
Input signal to BCM
BCM function
Actuator
Push-button ignition switch
Push switch
Engine start function
• Steering lock relay
• Steering lock unit
• Starter relay (IPDM E/R)
• Starter control relay (IPDM E/
R)
• Starter motor
• KEY warning lamp
CVT device (CVT models)
P range
PNP switch (CVT models)
N, P range
Clutch interlock switch (M/T mod-
els)
Clutch ON/OFF
Stop lamp switch
Brake ON/OFF
Each inside key antenna
Request signal
Remote keyless entry receiver
Key ID
Each door switch
Door open/close
ECM
Engine status signal
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< FUNCTION DIAGNOSIS >
[SEDAN WITH INTELLIGENT KEY]
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
• Intelligent Key can be registered up to 4 keys (Including the standard Intelligent Key) on request from the
owner.
NOTE:
• Refer to
DLK-246, "INTELLIGENT KEY : System Description"
for any functions other than engine start
function of Intelligent Key system.
PRECAUTIONS FOR INTELLIGENT KEY SYSTEM
• In the Intelligent Key system of model L32, the transponder [the chip for NVIS (NATS) ID verification]
is integrated into the Intelligent Key. (For the conventional models, it is integrated into the mechani-
cal key.) Therefore, the mechanical key cannot perform the ID verification, and thus it cannot start
the engine. Instead, the NVIS (NATS) ID verification can be performed by inserting the Intelligent Key
into the key slot, and then it can start the engine.
OPERATION WHEN INTELLIGENT KEY IS CARRIED
1. When the push-button ignition switch is pressed and brake pedal is depressed, the BCM signals the
inside key antenna and transmits the request signal to the Intelligent Key.
2. The Intelligent Key sends the request signal and transmits the Intelligent Key ID signal to the BCM via the
remote keyless entry receiver.
3. The BCM receives the Intelligent Key ID signal and verifies it with the registered ID.
4. BCM transmits the steering lock unlock signal to steering lock unit and IPDM E/R if the verification results
are OK.
5. IPDM E/R turns the steering lock relay ON and supplies power to the steering lock unit.
6. Release of the steering lock.
7. BCM transmits the power supply stop signal to IPDM E/R when it confirms that the steering lock is in the
unlock condition.
8. IPDM E/R turns the steering lock relay OFF and stops power supply to the steering lock unit.
9. BCM turns ACC relay ON and transmits the ignition power supply ON signal to IPDM E/R.
10. IPDM E/R turns the ignition relay ON and starts the ignition power supply.
11. BCM confirms that the shift position is P or N (CVT models).
12. BCM transmits the starter request signal via CAN communication to IPDM E/R and turns the starter relay
in IPDM E/R ON if BCM judges that the engine start condition is satisfied.
13. IPDM E/R turns the starter control relay ON when receiving the starter request signal.
14. Battery power is supplied through the starter relay and the starter control relay to operate the starter motor
and to start the cranking.
CAUTION:
If a malfunction is detected in the Intelligent Key system, the “KEY” warning lamp in the combina-
tion meter illuminates. At that time, the engine cannot be started.
15. When BCM received feedback signal from ECM acknowledging the engine has been initiated, the BCM
transmits a stop signal to IPDM E/R and stops the cranking by turning OFF the starter motor relay. (If the
engine initiating has failed, the cranking will stop automatically within 5 seconds.)
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 “PUSH-BUTTON IGNITION SWITCH OPERATION PROCEDURE”.
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 NVIS (NATS) 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
.
BATTERY SAVER SYSTEM
When all the following conditions are met for 60 minutes, the battery saver system will cut off the power supply
to prevent battery discharge.
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
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• The ignition switch is in the ACC position
• All doors are closed
• CVT selector lever is in the P position
• No Intelligent Key failures (Intelligent Key warning indicator is not ON)
Reset Condition of Battery Saver System
CVT models
In order to prevent the battery from discharging, the battery saver system will cut off the power supply when all
doors are closed, the selector lever is on P position and the ignition switch is left on ACC position for 1 hour. If
any of the following conditions are met the battery saver system is released and the steering will change auto-
matically to lock position from OFF position.
• Opening any door
• Operating with request switch on door lock
• Operating with Intelligent Key on door lock
Press push-button ignition switch and ignition switch will change to ACC position from OFF position.
M/T models
If any of the conditions above is met the battery saver system is released but the steering will not lock.
In this case, the steering operation OFF to LOCK is prohibited.
STEERING LOCK OPERATION
Steering is locked by steering lock unit when ignition switch is in the OFF position, CVT selector lever is in the
P position and any of the following conditions are met.
• Opening door
• Closing door
• Door is locked with request switch
• Door is locked with Intelligent Key
PUSH-BUTTON IGNITION SWITCH OPERATION PROCEDURE
The power supply position changing operation can be performed with the following operations.
NOTE:
• When an Intelligent Key is within the detection area of inside key antenna or when it is inserted to the key
slot, it is equivalent to the operations below.
• When starting the engine, the BCM monitors under the engine start conditions,
- Brake pedal operating condition (CVT models)
- CVT selector lever position (CVT models)
- Clutch pedal operating condition (M/T models)
- Vehicle speed
- Steering lock condition
- Engine status
• Unless each start condition is fulfilled, the engine will not respond regardless of how many times the engine
switch is pressed. At that time, illumination repeats the position in the order of LOCK
→ACC→ON→OFF.
Power supply position
Engine start/stop condition
Push-button ignition switch op-
eration frequency
Brake pedal (CVT)
/clutch pedal (M/T)
CVT selector lever position
LOCK
→ ACC
Not depressed
Any position
1
LOCK
→ ACC → ON
Not depressed
Any position
2
LOCK
→ ACC → ON →
OFF
Not depressed
Any position
3
LOCK
→ START
ACC
→ START
ON
→ START
(Engine start)
Depressed
P or N position (*1)
1
[If the switch is pressed once,
the engine starts from any pow-
er supply position (LOCK, ACC,
and ON)]
Engine is running
→
OFF
(Engine stop)
—
Any position
Vehicle speed < 4 km/h (2 MPH)
1
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