NISSAN TIIDA 2007 Service Repair Manual

SEC-76
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
NATS (NISSAN ANTI-THEFT SYSTEM) SYMPTOMS
NATS (NISSAN ANTI-THEFT SYSTEM) SYMPTOMS
Symptom TableINFOID:0000000001404143
NOTE:
 Before performing the diagnosis in the following table, check “SEC-4, "
Work Flow"”.
 Check that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
 If the following symptoms are detected, check systems shown in the “Diagnosis/service procedure” column
in this order.
CONDITIONS OF VEHICLE (OPERATING CONDITIONS)
 Mechanical key is not inserted into key cylinder.
 Ignition knob switch is not depressed.
Symptom Diagnosis/service procedure Reference page
Engine cannot start.1. Check stop lamp switchXX-XX, "*****"
2. Check Intermittent IncidentXX-XX, "*****"
Security indicator does not turn ON or flash.1. Check vehicle security indicatorSEC-492. Check Intermittent IncidentXX-XX, "*****"

PRE-INSPECTION FOR DIAGNOSTIC
SEC-77
< ON-VEHICLE MAINTENANCE >[WITH INTELLIGENT KEY SYSTEM]
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ON-VEHICLE MAINTENANCE
PRE-INSPECTION FOR DIAGNOSTIC
Basic InspectionINFOID:0000000001404144
The engine start function, door lock function, and NATS in the Intelligent Key system are closely related to
each other regarding control. Narrow down the functional area in question by performing basic inspection to
identify which function is malfunctioning. The vehicle security function can operate only when the door lock is
operating normally. Therefore, it is easy to identify any factor unique to the vehicle security system by perform-
ing the vehicle security operation check after basic inspection.
1.CHECK DOOR LOCK OPERATION
Check the door lock for normal operation with the Intelligent Key and door request switch.
Successful door lock operation with the Intelligent Key and request switch indicates that the remote keyless
entry receiver and inside key antenna required for engine start are functioning normally.
Identify the malfunctioning point by referring to the DLK section if the door cannot be unlocked.
Can the door be locked with the Intelligent Key and door request switch?
YES >> GO TO 2.
NO >> Refer to XX-XX, "*****"
.
2.CHECK IGNITION KNOB SWITCH OPERATION-1
With all registered Intelligent Keys, check if ignition knob can rotate when carrying Intelligent Key inside the
vehicle.
Does ignition knob rotate?
YES >> GO TO 3.
NO >> Refer to SEC-76, "
Symptom Table".
3.CHECK IGNITION KNOB SWITCH OPERATION-2
Insert registered mechanical key into key cylinder, and check if ignition knob can rotate. Check for all regis-
tered mechanical keys.
Does ignition knob rotate?
YES >> GO TO 4.
NO (Does not rotate with some of mechanical keys)>>Perform mechanical key registration.
NO (Does not rotate with all mechanical keys)>>Refer to SEC-76, "
Symptom Table".
4.CHECK VEHICLE SECURITY SYSTEM
Check the vehicle security system for normal operation.
The vehicle security function can operate only when the door lock function is operating normally.
Therefore, it is easy to identify any factor unique to the vehicle security by performing the vehicle security
operation check after this basic inspection.
>> Go to SEC-77, "
Vehicle Security Operation Check".
Vehicle Security Operation CheckINFOID:0000000001404145
1.INSPECTION START
Turn ignition switch “OFF” and pull out mechanical key from key cylinder.
NOTE:
Before starting operation check, open front windows.
>> GO TO 2.
2.CHECK SECURITY INDICATOR LAMP
1. Lock doors using Intelligent Key.
2. Check that security indicator lamp illuminates for 30 seconds.
Security indicator lamp should illuminate.
OK >> GO TO 3.

SEC-78
< ON-VEHICLE MAINTENANCE >[WITH INTELLIGENT KEY SYSTEM]
PRE-INSPECTION FOR DIAGNOSTIC
NG >> Perform diagnosis and repair. Refer to XX-XX, "*****".
3.CHECK ALARM FUNCTION
1. After 30 seconds, security indicator lamp will start to blink.
2. Open any door or hood before unlocking with Intelligent Key or open back door without Intelligent Key.
Does alarm function properly.
OK >> GO TO 4.
NG >> Check the following.
 The vehicle security system does not phase in alarm mode. Refer to XX-XX, "*****"
.
 Alarm does not operate. Refer to XX-XX, "*****"
.
4.CHECK ALARM CANCEL OPERATION
Unlock any door or open back door using Intelligent Key.
Alarm (horn and headlamp) should stop.
OK >> INSPECTION END.
NG >> Check door lock function. Refer to XX-XX, "*****"
.

INTELLIGENT KEY UNIT
SEC-79
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ON-VEHICLE REPAIR
INTELLIGENT KEY UNIT
Removal and InstallationINFOID:0000000001350478
INTELLIGENT KEY UNIT RH DRIVE
Removal
1. Remove the lower driver instrument cover. Refer to IP-10, "Component Parts".
2. Remove the screw (A), disconnect the electrical connector (1),
and remove the intelligent key unit and bracket(2).
Installation
Installation is in the reverse order of removal.
INTELLIGENT KEY UNIT LH DRIVE
Removal
1. Remove the glove box assembly. Refer to IP-10, "Component Parts".
2. Remove the screw (A), disconnect the electrical connector (1),
and remove the intelligent key unit and bracket(2).
Installation
Installation is in the reverse order of removal.
ALKIA0682GB
ALKIA0683GB

SEC-80
< BASIC INSPECTION >[WITHOUT INTELLIGENT KEY SYSTEM]
DIAGNOSIS AND REPAIR WORKFLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work FlowINFOID:0000000001404152
OVERALL SEQUENCE
DETAILED FLOW
ALKIA0246GB

DIAGNOSIS AND REPAIR WORKFLOW
SEC-81
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1.GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurred).
>> GO TO 2.
2.CHECK DTC
1. Check DTC for BCM.
2. Perform the following procedure if DTC is displayed.
- Erase DTC.
- Study the relationship between the cause detected by DTC and the symptom described by the customer.
3. Check related service bulletins for information.
Is any symptom described and any DTC detected?
Symptom is described, DTC is displayed>>GO TO 3.
Symptom is described, DTC is not displayed>>GO TO 4.
Symptom is not described, DTC is displayed>>GO TO 5.
3.CONFIRM THE SYMPTOM
Confirm the symptom described by the customer.
Connect CONSULT-III to the vehicle in “DATA MONITOR” mode and check real time diagnosis results.
Verify relation between the symptom and the condition when the symptom is detected.
>> GO TO 5.
4.CONFIRM THE SYMPTOM
Confirm the symptom described by the customer.
Connect CONSULT-III to the vehicle in “DATA MONITOR ” mode and check real time diagnosis results.
Verify relation between the symptom and the condition when the symptom is detected.
>> GO TO 6.
5.PERFORM DTC CONFIRMATION PROCEDURE
Perform DTC Confirmation Procedure for the displayed DTC, and then check that DTC is detected again.
If two or more DTCs are detected, refer to SEC-113, "
DTCInspectionPriorityChart" and determine trouble
diagnosis order.
Is DTC detected?
YES >> GO TO 8.
NO >> Refer to XX-XX, "*****"
.
6.PERFORM BASIC INSPECTION
Perform Basic Inspection, refer to SEC-118, "
Basic Inspection".
Inspection End>>GO TO 7.
7.DETECT MALFUNCTIONING SYSTEM BY SYMPTOM TABLE
Detect malfunctioning system according to Symptom Table based on the confirmed symptom in step 4.
>> GO TO 8.
8.DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE
Inspect according to Diagnostic Procedure of the system.
NOTE:
The Diagnostic Procedure described based on open circuit inspection. A short circuit inspection is also
required for the circuit check in the Diagnostic Procedure.
>> GO TO 9.

SEC-82
< BASIC INSPECTION >[WITHOUT 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 2, perform DTC Confirmation Procedure or Component Function Check
again, and then check that the malfunction have been repaired securely.
When symptom was described from the customer, refer to 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-83
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INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement
INFOID:0000000001404154
Refer to the CONSULT-III Operation Manual-NATS.
ECM RE-COMMUNICATING FUNCTION
ECM RE-COMMUNICATING FUNCTION : DescriptionINFOID:0000000001404155
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:0000000001404156
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-84
< FUNCTION DIAGNOSIS >[WITHOUT INTELLIGENT KEY SYSTEM]
NATS (NISSAN ANTI-THEFT SYSTEM)
FUNCTION DIAGNOSIS
NATS (NISSAN ANTI-THEFT SYSTEM)
System DiagramINFOID:0000000001404157
System DescriptionINFOID:0000000001404158
INPUT/OUTPUT SIGNAL CHART
BCM
SYSTEM DESCRIPTION
NATS (Nissan Anti-Theft System) has the following immobilizer functions:
 Engine immobilizer shows high anti-theft performance to prevent engine start 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).
 Therefore, NATS warns outsiders that the vehicle is equipped with the anti-theft system. Refer to XX-XX,
"*****".
 If system detects malfunction, security indicator illuminate when ignition switch is turned to ON position.
 If the owner requires, ignition key ID can be registered for up to 5 keys.
 During trouble diagnosis or when the following parts have been replaced, and if ignition key is added, regis-
tration* is required.
*1: All keys kept by the owner of the vehicle should be registered with ignition key.
-ECM
-BCM
- Ignition key
- ABS actuator control unit
- EPS sontrol unit
- IPDM E/R
- Combination meter
 NATS trouble diagnosis, system initialization and additional registration of other Ignition key IDs must be car-
ried out using CONSULT-III hardware and SECURITY CARD.
When NATS initialization has been completed, the ID of the inserted ignition key or ignition key IDs can be
carried out.
PIIA1121E
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-85
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 Possible symptom of NATS malfunction is “Engine cannot start” In J10, the engine can be started with the
NATS. Identify the possible causes according to “Work Flow”. Refer to SEC-80, "
Work Flow".
 If ECM other than Genuine NISSAN is installed, the engine cannot be started. For ECM replacement proce-
dure, refer to SEC-83, "
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 ignition key is necessary for this procedure. Before starting the registration opera-
tion collect all registered ignition keys from the customer
 The NATS ID registration is the procedure that registers the ID stored into the transponder (integrated in
ignition key) to BCM.
SECURITY INDICATOR
 Security indicator blinks when the ignition switch is in “OFF” or “ACC” position.
 When NATS detects trouble, the security indicator lamp lights up while ignition key is in the “ON” position.
MAINTENANCE INFORMATION
CAUTION:
If 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
 IPDM E/R
 Ignition key
 NATS antenna amp.
Component Parts LocationINFOID:0000000001404159
1. BCM M18, M20
(view with glove box removed)2. NATS antenna amp. M21 3. Security indicator lamp M31
4. ECM E16
ALKIA0849ZZ