Nissan Pathfinder (2012 year). Instruction — part 527
DIAGNOSIS AND REPAIR WORKFLOW
SEC-5
< BASIC INSPECTION >
[WITH INTELLIGENT KEY SYSTEM]
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow
INFOID:0000000007355662
OVERALL SEQUENCE
DETAILED FLOW
ALKIA0538GB
August 2012
2012 Pathfinder
2012 Pathfinder
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 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 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-69, "DTC Inspection Priority Chart"
(Intelligent Key unit),
BCS-43, "DTC Inspection Priority Chart"
(BCM) and determine trouble diagnosis order.
Is DTC detected?
YES
>> GO TO 8
NO
>> Refer to
GI-37, "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
August 2012
2012 Pathfinder
2012 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.
August 2012
2012 Pathfinder
2012 Pathfinder
SEC-8
< BASIC INSPECTION >
[WITH INTELLIGENT KEY SYSTEM]
PRE-INSPECTION FOR DIAGNOSTIC
PRE-INSPECTION FOR DIAGNOSTIC
Basic Inspection
INFOID:0000000007355663
The engine start function, door lock function, power distribution system and NATS-IVIS/NVIS 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 and power distribution system are operating normally. Therefore, it is easy to
identify any factor unique to the vehicle security system by performing the vehicle security operation check
after basic inspection.
1.
CHECK DOOR LOCK OPERATION
Check the door lock for normal operation with the Intelligent Key controller and door request switch.
Successful door lock operation with the Intelligent Key and request SW 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
2.
CHECK ENGINE STARTING
Check that the engine starts when operating the Intelligent Key.
Does the engine start?
YES
>> GO TO 3
NO
>> Refer to
.
3.
CHECK STEERING LOCK
Does the steering lock when operating door switch after switching the power supply from ON position (or ACC
position) to LOCK position?
If door switch is malfunctioning, BCM cannot lock the steering. If BCM does not detect DTC, steering lock unit
is normal.
Does steering lock?
YES
>> GO TO 4
NO
>> Refer to
.
4.
CHECK IGNITION KNOB SWITCH OPERATION
Press ignition knob to check switch operation.
Does the combination meter display any message?
YES
>> GO TO 5
NO
>> Refer to
SEC-50, "Ignition Knob Switch Check"
.
5.
CHECK VEHICLE SECURITY SYSTEM
Check the vehicle security system for normal operation.
The vehicle security function can operate only when the door lock and power distribution functions are operat-
ing 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.
>> Refer to
SEC-8, "Vehicle Security Operation Check"
.
Vehicle Security Operation Check
INFOID:0000000007355664
1.
INSPECTION START
Turn ignition switch “OFF”.
NOTE:
Before starting operation check, open front windows.
>> GO TO 2
August 2012
2012 Pathfinder
2012 Pathfinder
PRE-INSPECTION FOR DIAGNOSTIC
SEC-9
< BASIC INSPECTION >
[WITH INTELLIGENT KEY SYSTEM]
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2.
CHECK SECURITY INDICATOR LAMP
1. Lock doors using Intelligent Key or mechanical key.
2. Check that security indicator lamp illuminates for 30 seconds.
Does security indicator lamp illuminate?
YES
>> GO TO 3
NO
>> Perform diagnosis and repair. Refer to
.
3.
CHECK ALARM FUNCTION
1. After 30 seconds, security indicator lamp will start to blink.
2. Open any door before unlocking with Intelligent Key or mechanical key, or open back door or glass hatch
without the presence of Intelligent Key.
Does the alarm function properly?
YES
>> GO TO 4
NO
>> Check the following.
• The vehicle security system does not phase in alarm mode. Refer to
.
• Alarm (horn and headlamps) does not operate. Refer to
4.
CHECK ALARM CANCEL OPERATION
Unlock any door using Intelligent Key or mechanical key.
Does alarm (horn and headlamps) stop?
YES
>> Inspection End.
NO
>> Check door lock function. Refer to
August 2012
2012 Pathfinder
2012 Pathfinder
SEC-10
< 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:0000000007355665
Refer to the CONSULT Immobilizer mode and follow the on-screen instructions.
ECM RE-COMMUNICATING FUNCTION
ECM RE-COMMUNICATING FUNCTION : Description
INFOID:0000000007355666
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 is not necessary)
NOTE:
•
When registering new Key IDs or replacing the ECM that is not brand new, refer to CONSULT Immo-
bilizer mode and follow the on-screen instructions.
•
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:0000000007355667
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 Immobilizer mode and follow the on-screen instructions.
2012 Pathfinder
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
SEC-11
< SYSTEM DESCRIPTION >
[WITH INTELLIGENT KEY SYSTEM]
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SYSTEM DESCRIPTION
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
System Diagram
INFOID:0000000007355668
System Description
INFOID:0000000007355669
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 areas)
• 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, lug-
gage areas)
Intelligent Key
(inside antenna detection
area or not.)
Switch/Input signal
Input signal to
IPDM E/R
IPDM E/R function
Actuator/Output signal
Transmission range 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 areas)
ALKIA1267GB
August 2012
2012 Pathfinder
2012 Pathfinder
SEC-12
< SYSTEM DESCRIPTION >
[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
BCS-16, "COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)"
for any functions 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).
August 2012
2012 Pathfinder
2012 Pathfinder
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