2007 NISSAN TIIDA Service Repair Manual

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NISSAN TIIDA 2007 Service Repair Manual SEC-8
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
FUNCTION DIAGNOSIS
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
System DiagramINFOID:000000000140

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NISSAN TIIDA 2007 Service Repair Manual INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
SEC-9
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Intelligent Key has 2 IDs (for Intelligent Key and for NATS).

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
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Intelligent Key has 2 IDs (for Intelligent Key and for NATS). It can perform the door lock/unlock operation and
the engine start 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
mechanical key set in the Intelligent Key to the ignition key cylinder. At that time, perform the NATS ID verifi-
cation. If it is used when the Intelligent Key is carried, perform the Intelligent Key ID verification.
If the ID is successfully verified, and when the ignition knob switch is pressed, steering lock will be released
and initiating the engine will be possible.
The door lock/unlock operation can be performed when the Intelligent Key battery is discharged, by operat-
ing the driver door key cylinder using the mechanical key set in the Intelligent Key.
Up to 4 Intelligent Keys can be registered (including the standard Intelligent Key) on request from the owner.
NOTE:
Refer to XX-XX, "*****"
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 NATS ID verification] is integrated into the
Intelligent Key. (For non-Intelligent Key systems, it is integrated into the mechanical key.) Therefore,
the mechanical key cannot perform the ID verification, and thus it cannot start the engine. Instead,
the NATS ID verification can be performed by inserting the mechanical key into the key cylinder, and
then it can start the engine.
OPERATION WHEN INTELLIGENT KEY IS CARRIED
1. When the ignition knob switch and brake switch are ON, and Intelligent Key unit is transmitting the request
signal to the Intelligent Key.
2. The Intelligent Key receives the request signal and transmits the Intelligent Key ID signal to the Intelligent
Key unit.
3. The Intelligent Key unit receives the Intelligent Key ID signal and verifies it with the registered ID.
4. Intelligent Key unit transmits the steering lock unlock signal to steering lock unit and turn on the key warn-
ing lamp (green) if the verification results are OK. (The detail of key warning lamp operation, refer to XX-
XX, "*****")
5. Release of the steering lock.
6. 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.
7. IPDM E/R turns the starter control relay ON when receiving the starter request signal.
8. When shift position is in P or N position, battery power is supplied through the starter relay and 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.
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 MECHANICAL KEY IS USED
When the Intelligent Key battery is discharged, performs the NATS ID verification between the integrated tran-
sponder and BCM by inserting the mechanical key into the key cylinder, and then the engine can be started.
For details relating to starting the engine using mechanical key, refer to SEC-12, "
System Description".
STEERING LOCK OPERATION
Steering is locked by steering lock unit when ignition switch is in the OFF position (the ignition knob is
released) and key switch is OFF (key is removed from ignition key cylinder).
KEY INTERLOCK OPERATION (ONLY FOR M/T MODELS)
In case of a M/T vehicle is in motion and ignition is turned into LOCK position, steering lock unit causes a risk
by activating the steering lock actuator. The key interlock operation is designed to override the steering lock
system and prevent the situation mentioned above from occuring.
LOCK condition
When the following conditions are fulfilled, key interlock solenoid will be locked. (Steering lock inactive)
1 second passes after ignition switch is in ON position and engine revolution speed goes above 500 rpm.
UNLOCK condition

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NISSAN TIIDA 2007 Service Repair Manual SEC-10
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
When any of the following condition are fulfilled key interlock solenoid will be unlocked. (Stee

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NISSAN TIIDA 2007 Service Repair Manual INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
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ECMHR16 (WITH EURO-OBD): XX-XX, "*****"
HR16 (WITHOUT EURO-OBD)

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NISSAN TIIDA 2007 Service Repair Manual SEC-12
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
NATS (NISSAN ANTI-THEFT SYSTEM)
NATS (NISSAN ANTI-THEFT SYSTEM)
System DiagramINFOID:0000000001404038
System DescriptionINFOID:00000000014040

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NISSAN TIIDA 2007 Service Repair Manual NATS (NISSAN ANTI-THEFT SYSTEM)
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- Mechanical key
- ABS actuator control unit
- EPS control unit
- IPDM E/R

NATS (NISSAN ANTI-THEFT SYSTEM)
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- Mechanical key
- ABS actuator control unit
- EPS control unit
- IPDM E/R
NATS trouble diagnosis, system initialization and additional registration of other mechanical key IDs must be
carried out using CONSULT-III hardware and SECURITY CARD.
When NATS initialization has been completed, the ID of the inserted mechanical key or mechanical key IDs
can be carried out.
Possible symptom of NATS malfunction is “Engine cannot start”. In C11, the engine can be started with the
Intelligent Key system and NATS. Identify the possible causes according to “Work Flow”, Refer to SEC-4,
"Work Flow".
If ECM other than Genuine NISSAN is installed, the engine cannot be started. For ECM replacement proce-
dure, refer to SEC-7, "
ECM RE-COMMUNICATING FUNCTION : Description".
PRECAUTIONS FOR KEY REGISTRATION
The key registration is a procedure that erases the current NATS ID once, and then re-registers a new ID.
Therefore the registered Intelligent Key is necessary for this procedure. Before starting the registration oper-
ation collect all registered Intelligent Keys from the customer.
The NATS ID registration is the procedure that registers the ID stored into the transponder (integrated in
mechanical key) to BCM.
The Intelligent Key ID registration is the procedure that registers the ID to Intelligent Key unit.
When performing the Intelligent Key system registration only, the engine cannot be started by inserting the
key into the key cylinder. When performing the NATS registration only, the engine cannot be started by using
the mechanical key.
SECURITY INDICATOR
Always flashes with ignition knob released (ignition knob switch: OFF) condition on ignition knob LOCK posi-
tion.
Always flashes with ignition knob released (ignition knob switch: OFF) condition on mechanical key removed
position.
Turns ON steady when the NATS is activated.
MAINTENANCE INFORMATION
CAUTION:
It is necessary to perform NATS ID registration when replacing any of the following part.
If it's not (or fail to do so), the electrical system may not operate properly.
BCM
ECM
Intelligent Key unit
Intelligent Key
IPDM E/R
NATS antenna amp.

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NISSAN TIIDA 2007 Service Repair Manual SEC-14
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
NATS (NISSAN ANTI-THEFT SYSTEM)
Component Parts Location
INFOID:0000000001404040
Component DescriptionINFOID:0000000001404041
1. BCM M18, M20

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NISSAN TIIDA 2007 Service Repair Manual DIAGNOSIS SYSTEM (BCM)
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< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
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DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Function (BCM - COMMON I

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