NISSAN TIIDA 2007 Service Repair Manual

SEC-6
< BASIC INSPECTION >[WITH INTELLIGENT KEY SYSTEM]
DIAGNOSIS AND REPAIR WORKFLOW
9.REPAIR OR REPLACE THE MALFUNCTIONING PART
1. Repair or replace the malfunctioning part.
2. Reconnect parts or connectors disconnected during Diagnostic Procedure again after repair and replace-
ment.
3. Check DTC. If DTC is displayed, erase it.
>> GO TO 10.
10.FINAL CHECK
When DTC was detected in step 9, perform DTC Confirmation Procedure or Component Function Check
again, and then check that the malfunctions have been fully repaired.
When symptom was described by the customer, refer to the confirmed symptom in step 3 or 4, and check that
the symptom is not detected.
Does the symptom reappear?
YES (DTC is detected)>>GO TO 8.
YES (Symptom remains)>>GO TO 6.
NO >>INSPECTION END

INSPECTION AND ADJUSTMENT
SEC-7
< BASIC INSPECTION >[WITH INTELLIGENT KEY SYSTEM]
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INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement
INFOID:0000000001404031
Refer to the CONSULT-III Operation Manual-NATS.
ECM RE-COMMUNICATING FUNCTION
ECM RE-COMMUNICATING FUNCTION : DescriptionINFOID:0000000001404032
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 Manual.
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 RequirementINFOID:0000000001404033
1.PERFORM ECM RE-COMMUNICATING FUNCTION
1. Install ECM.
2. Using a registered 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 Manual NATS.

SEC-8
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
FUNCTION DIAGNOSIS
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
System DiagramINFOID:0000000001404034
System DescriptionINFOID:0000000001404035
INPUT/OUTPUT SIGNAL CHART
Intelligent Key Unit
IPDM E/R
BCM
SYSTEM DESCRIPTION
 The engine start function of Intelligent Key system is a system that makes it possible to start and stop the
engine without using the key. It verifies the electronic ID using two-way communications when pressing the
ignition knob 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.
Switch/Input signalInput signal to
Intelligent Key unit Intelligent Key unit
functionActuator/Output signal
Key switchMechanical key
(insert/remove)
Engine start function KEY warning lamp/buzzer
 Steering lock unit
 Starter relay request (to IPDM E/
R)
 Inside key antenna
(Instrument center, console, rear
seat)
 Key interlock solenoid Ignition knob switchIgnition knob
(push/release)
Steering lock unitSteering lock
(lock/unlock)
Inside key antenna
(Instrument center, console, rear
seat)Intelligent key
(inside antenna detection
area or not.)
Switch/Input signalInput signal to
IPDM E/R IPDM E/R function Actuator/Output signal
Park/neutral position switch (only
for A/T models)P,N range Engine start function Starter relay
 Starter motor
Switch/Input signalInput signal to
BCM BCM function Actuator/Output signal
Key switchMechanical key
(insert/remove)Engine start function Inside key antenna
(Instrument center, console, rear
seat)
MIIB0785E

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
SEC-9
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
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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

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. (Steering lock active)
 When vehicle speed is below 4km/h (2mph) and the ignition switch is turned from ON to OFF.
 When vehicle speed is over 4km/h (2mph) but less than 10km/h (6mph) in LOCK condition, and 3 second
passes after the ignition switch is turned from ON to OFF.
Component Parts LocationINFOID:0000000001404036
Component DescriptionINFOID:0000000001404037
1. BCM M18, M19, M20
(view with glove box removed)2. Intelligent Key Unit M52 3. Steering lock solenoid M6
(bottom view of steering column)
4. Security indicator lamp M31 5. ECM E16 6. Intelligent key warning buzzer (driver side) D6
(LHD: view with front door finisher removed)
7. Intelligent key warning buzzer (driver
side) D6
(RHD: view with front door finisher
removed)8. Intelligent Key warning buzzer
(trunk) B82 (sedan)
(view with trunk finisher LH re-
moved)
ALKIA0844ZZ
Component Reference
Intelligent Key unitSEC-34
BCMXX-XX, "*****"

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
SEC-11
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
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ECMHR16 (WITH EURO-OBD): XX-XX, "*****"
HR16 (WITHOUT EURO-OBD): XX-XX,
"*****"
MR18 (WITH EURO-OBD): XX-XX, "*****"
MR18 (WITHOUT EURO-OBD): XX-XX,
"*****"
K9K: XX-XX, "*****"
Steering lock unitSEC-23
Ignition knob switch, key switch and key lock solenoidXX-XX, "*****"
Inside key antennaXX-XX, "*****"
Security indicatorSEC-49
Component Reference

SEC-12
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
NATS (NISSAN ANTI-THEFT SYSTEM)
NATS (NISSAN ANTI-THEFT SYSTEM)
System DiagramINFOID:0000000001404038
System DescriptionINFOID:0000000001404039
INPUT/OUTPUT SIGNAL CHART
Intelligent Key Unit
BCM
SYSTEM DESCRIPTION
NATS (Nissan Anti-Theft System) has the following immobilizer functions:
 Engine immobilizer shows high anti-theft performance to prevent engine from starting by other than the
owner.
 Only a key with key ID registered in BCM and ECM can start engine, and shows high anti-theft performance
to prevent key from being copied or stolen.
 Security indicator always flashes with mechanical key removed condition (key switch: OFF) and ignition
knob released condition on LOCK position (ignition knob switch: OFF).
 Therefore, NATS warns outsiders that the vehicle is equipped with the anti-theft system. Refer to XX-XX,
"*****".
 If system detects malfunction, security indicator illuminates when ignition switch is turned to ON position.
 If the owner requires, ignition key ID or mechanical key ID can be registered for up to 4 keys.
 During trouble diagnosis or when the following parts have been replaced, and if mechanical key is added,
registration* is required.
*1: All keys kept by the owner of the vehicle should be registered with mechanical key.
-ECM
-BCM
LIIA2537E
Switch/Input signal Input signal to BCM BCM function Actuator/Output signal
Ignition knob switchIgnition knob
(push/release)
NATS  Steering lock unit Key switchMechanical key
(Insert/remove)
Steering lock unitSteering
(lock/unlock)
ECM Engine status signal
Switch/Input signal Input signal to BCM BCM function Actuator/Output signal
NATS antenna amp. Key ID
NATS Security indicator lamp
 Starter request
ECM Engine status signal

NATS (NISSAN ANTI-THEFT SYSTEM)
SEC-13
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY 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.

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
(view with glove box removed)2. Intelligent Key Unit M52 3. NATS antenna amp. M21
4. Key switch and ignition knob switch
(A/T) M325. Steering lock solenoid M6
(bottom view of steering column)6. ECM E16
7. Security indicator lamp
M34
ALKIA0845ZZ
Component Reference
BCMXX-XX, "*****"
Steering lock unitSEC-23
Key switchXX-XX, "*****"
Ignition knob switchXX-XX, "*****"
NATS antenna amp.SEC-26
Security indicatorSEC-49
IPDM E/RXX-XX, "*****"

DIAGNOSIS SYSTEM (BCM)
SEC-15
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
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DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)INFOID:0000000001404046
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.
IMMU
IMMU : CONSULT-III Function (BCM - IMMU)INFOID:0000000001404047
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with BCM.
Diagnosis mode Function Description
WORK SUPPORT Changes the setting for each system function.
SELF-DIAG RESULTS Displays the diagnosis results judged by BCM. Refer to XX-XX, "*****"
.
CAN DIAG SUPPORT MNTR Monitors the reception status of CAN communication viewed from BCM.
DATA MONITOR The BCM input/output signals are displayed.
ACTIVE TEST The signals used to activate each device are forcibly supplied from BCM.
ECU IDENTIFICATION The BCM part number is displayed.
CONFIGURATION Enables to read and save the vehicle specification.
 Enables to write the vehicle specification when replacing BCM.
System Sub system selection itemDiagnosis mode
WORK SUPPORT DATA MONITOR ACTIVE TEST
—BCM×
Door lock DOOR LOCK×××
Rear window defogger REAR DEFOGGER××
Warning chime BUZZER××
Interior room lamp timer INT LAMP×××
Remote keyless entry system MULTI REMOTE ENT×××
Exterior lamp HEAD LAMP×××
Wiper and washer WIPER×××
Turn signal and hazard warning lamps FLASHER××
Air conditioner AIR CONDITONER×
Intelligent Key system INTELLIGENT KEY×
Combination switch COMB SW×
Immobilizer IMMU××
Interior room lamp battery saver BATTERY SAVER×××
Trunk open TRUNK×
Vehicle security system THEFT ALM×××
Signal buffer system SIGNAL BUFFER××
PTC heater system PTC HEATER××