Nissan Pathfinder (2009 year). Instruction — part 573
SEC-6
< BASIC INSPECTION >
[WITH INTELLIGENT KEY SYSTEM]
DIAGNOSIS AND REPAIR WORKFLOW
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 Intelligent Key unit and 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-98, "DTC Inspection Priority Chart"
(Intelligent Key unit),
SEC-78, "DTC Inspection Priority Chart"
(BCM) and determine trouble diagnosis order.
Is DTC detected?
YES
>> GO TO 8
NO
>> Refer to
GI-49, "Intermittent Incident"
.
6.
PERFORM BASIC INSPECTION
Perform Basic Inspection. Refer to
.
>> 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 is described based on open circuit inspection. A short circuit inspection is also
required for the circuit check in the Diagnostic Procedure.
>> GO TO 9
2009 Pathfinder
DIAGNOSIS AND REPAIR WORKFLOW
SEC-7
< BASIC INSPECTION >
[WITH INTELLIGENT KEY SYSTEM]
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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.
2009 Pathfinder
SEC-8
< BASIC INSPECTION >
[WITH INTELLIGENT KEY SYSTEM]
INSPECTION AND ADJUSTMENT
INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement
INFOID:0000000003938414
Refer to the CONSULT-III Operation Instruction-NATS.
ECM RE-COMMUNICATING FUNCTION
ECM RE-COMMUNICATING FUNCTION : Description
INFOID:0000000003938415
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 NATS.
• 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:0000000003938416
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 Instruction.
2009 Pathfinder
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
SEC-9
< FUNCTION DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
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FUNCTION DIAGNOSIS
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
System Diagram
INFOID:0000000003938417
System Description
INFOID:0000000003938418
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 signal
Input signal to
Intelligent Key unit
Intelligent Key unit
function
Actuator/Output signal
Key switch
Mechanical key
(insert/remove)
Engine start function
• KEY warning lamp/buzzer
• Steering lock unit
• Starter relay request (to IPDM E/R)
• Inside key antenna
(Instrument panel, center console,
luggage compartment)
• Key interlock solenoid
Ignition knob switch
Ignition knob
(push/release)
Steering lock unit
Steering lock
(lock/unlock)
Inside key antenna
(Front and rear center console, over-
head console, luggage compartment)
Intelligent key
(inside antenna detection
area or not.)
Switch/Input signal
Input signal to
IPDM E/R
IPDM E/R function
Actuator/Output signal
Park/neutral position switch
P, N range
Engine start function
• Starter relay
• Starter motor
Switch/Input signal
Input signal to
BCM
BCM function
Actuator/Output signal
Key switch
Brake
(press/release)
Engine start function
• Inside key antenna
(Instrument panel, center console,
luggage compartment)
ALKIA1267GB
2009 Pathfinder
SEC-10
< FUNCTION DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
• 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
SEC-20, "COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)"
other than engine start function of Intelligent Key system.
PRECAUTIONS FOR INTELLIGENT KEY SYSTEM
• For vehicles equipped with the Intelligent Key system, the transponder [the chip for NATS ID verifi-
cation] is integrated into the Intelligent Key. Therefore, the Intelligent Key alone is capable of provid-
ing security clearance for the engine to start. Also, when the mechanical key alone is inserted into
the key cylinder, performs the NATS ID verification to allow the engine to start. For vehicles without
Intelligent Key system, the transponder is integrated into the mechanical key which must be inserted
into the key cylinder to perform the NATS ID verification to allow the engine to start.
OPERATION WHEN INTELLIGENT KEY IS CARRIED
1.
When the ignition knob switch is ON, the Intelligent Key unit transmits 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 if the verification results
are OK. For detail of key warning lamp operation, refer to
.
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 "NO KEY" warning message will be
displayed in the combination meter. 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
.
STEERING LOCK OPERATION
Steering is locked by steering lock unit when ignition switch is in the LOCK position (the ignition knob is
released) and key switch is OFF (key is removed from ignition key cylinder).
2009 Pathfinder
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
SEC-11
< FUNCTION DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
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Component Parts Location
INFOID:0000000003938419
ALKIA1717ZZ
1.
BCM M18, M19, M20
(view with instrument panel LH removed)
2.
Intelligent Key unit M164
(view with glove box removed)
3.
IPDM E/R
E119, E120, E122, E124
4.
ECM E16
5.
Key switch and ignition knob switch M66
(view with steering column removed)
6.
Steering lock solenoid M65
2009 Pathfinder
SEC-12
< FUNCTION DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
Component Description
INFOID:0000000003938420
7.
Remote keyless entry receiver M67
(view with instrument panel RH removed)
8.
A/T device (park position switch) M158
(view with center console removed)
9.
Inside key antenna 1 (instrument
panel) M68
(view with center console removed)
10. Inside key antenna 2 (center console)
M212
(view with center console removed)
11. Inside key antenna 3 (3rd row seat) B129
(behind 3
rd
row seat)
12. Intelligent Key warning buzzer E60
13. Front door switch LH B8
RH B108
14. Rear door switch LH B18
RH B116
15. Back door latch (door ajar switch)
D502
16. A/T assembly F9 (with VQ40DE)
F70 (with VK56DE)
17. Combination meter M24
18. Vehicle security indicator lamp
Item
Function
Intelligent Key unit
Receives lock/unlock signal from remote keyless entry receiver, and then transmits to BCM.
BCM
Verifies the received signal from Intelligent Key, then informs ECM whether to allow engine start.
Remote keyless entry receiver
Receives lock/unlock signal from the Intelligent Key, and then transmits to Intelligent Key unit.
Intelligent Key
Transmits button operation to remote keyless entry receiver.
Ignition knob switch
Monitors the status of the ignition knob switch.
Steering lock solenoid
Locks the steering wheel when the ignition key is off and the Intelligent Key is outside the vehicle.
Inside key antenna
Detects if Intelligent Key is inside the vehicle.
Intelligent Key warning buzzer
Warns the user of the lock/unlock condition and inappropriate operations with the buzzer sound.
A/T device (park position switch)
Detects whether the shift lever is in park.
2009 Pathfinder
NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)
SEC-13
< FUNCTION DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
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NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)
System Diagram
INFOID:0000000003938421
System Description
INFOID:0000000003938422
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
.
• 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 switch
Ignition knob
(push/release)
NATS
• Steering lock unit
Key switch
Mechanical key
(Insert/remove)
Steering lock unit
Steering
(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
2009 Pathfinder
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