Performing the 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 a virgin ECM which has never been energized on-board.
(In this step, initialization procedure by CONSULT is not necessary)
NOTE:
• When registering new Key IDs or replacing the ECM that is not brand new, follow the instruction of

CONSULT display.

• If multiple keys are attached to the key holder, separate them before beginning work.
• Distinguish keys with unregistered key IDs from those with registered IDs.

ECM RE-COMMUNICATING FUNCTION : Work Procedure

INFOID:0000000009163596

PERFORM ECM RE-COMMUNICATING FUNCTION

Install ECM.

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.

Maintain ignition switch in the “ON” position for at least 5 seconds.

Turn ignition switch to “OFF”.

Start engine.

Can engine be started?

YES

>> Procedure is completed.

>> Initialize control unit.

SEC-4

< SYSTEM DESCRIPTION >

[INTELLIGENT KEY SYSTEM]

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION

SYSTEM DESCRIPTION

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION

System Diagram

INFOID:0000000009163597

System Description

INFOID:0000000009163598

• 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 communication 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 communication 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 starting 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.

• Up to 4 Intelligent Keys can be registered (Including the standard Intelligent Key) on request from the owner.

NOTE:
• Refer to

SEC-4, "System Description"

for any functions other than engine start function of Intelligent Key

system.

PRECAUTIONS FOR INTELLIGENT KEY SYSTEM

• In the Intelligent Key system, the transponder [the chip for NVIS (NATS) ID verification] is integrated

into the Intelligent Key. (For the conventional models, it is integrated into the mechanical key.) There-
fore, 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

When the push-button ignition switch is pressed, the BCM signals the inside key antenna and transmits
the request signal to the Intelligent Key.

The Intelligent Key receives the request signal and transmits the Intelligent Key ID signal to the BCM via
the remote keyless entry receiver.

The BCM receives the Intelligent Key ID signal and verifies it with the registered ID.

JMKIA1870GB

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION

SEC-5

< SYSTEM DESCRIPTION >

[INTELLIGENT KEY SYSTEM]

SEC

BCM transmits the steering lock unlock signal to steering lock unit and IPDM E/R if the verification results
are OK.

IPDM E/R turns the steering lock relay ON and supplies power to the steering lock unit.

Release of the steering lock.

BCM transmits the power supply stop signal to IPDM E/R when it confirms that the steering lock is in the
unlock condition.

IPDM E/R turns the steering lock relay OFF and stops power supply to the steering lock unit.

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.

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 receives 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 the 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

SEC-9, "System Description"

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.
• The ignition switch is in the ACC position
• All doors are closed
• Shift lever is in the P position

Reset Condition of Battery Saver System

If any of the following conditions are met the battery saver system is released and the steering will change
automatically to the lock position from the OFF position.
• Opening any door
• Operating with request switch on door lock
• Operating with Intelligent Key on door lock
Pressing the push-button ignition switch and ignition switch will change the ignition switch to ACC position
from OFF position.

STEERING LOCK OPERATION

Steering is locked by steering lock unit when ignition switch is in the OFF position, shift lever is in the P posi-
tion and any of the following conditions are met.
• Opening door
• Closing door
• Door is locked with request switch
• Door is locked with Intelligent Key

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