ECM Re-communicating Function NISSAN TIIDA 2007 Service Repair Manual

INSPECTION AND ADJUSTMENT
EC-23
< BASIC INSPECTION >[HR16DE (WITH EURO-OBD)]
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2. Rev engine (2,000 to 3,000 rpm) two or three times under no
load, then run engine at idle speed for about 1 minute.
3. Check idle speed.
For procedure, refer to EC-26, "
IDLE SPEED : Special Repair
Requirement".
For specification, refer to EC-380, "
Idle Speed".
Is the inspection result normal?
YES >> GO TO 10.
NO >> GO TO 4.
4.PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Stop engine.
2. Perform EC-26, "
ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Require-
ment".
>> GO TO 5.
5.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform EC-27, "
THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement".
>> GO TO 6.
6.PERFORM IDLE AIR VOLUME LEARNING
Perform EC-27, "
IDLE AIR VOLUME LEARNING : Special Repair Requirement".
Is Idle Air Volume Learning carried out successfully?
YES >> GO TO 7.
NO >> Follow the instruction of Idle Air Volume Learning. Then GO TO 4.
7.CHECK TARGET IDLE SPEED AGAIN
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
For procedure, refer to EC-26, "
IDLE SPEED : Special Repair Requirement".
For specification, refer to EC-380, "
Idle Speed".
Is the inspection result normal?
YES >> GO TO 10.
NO >> GO TO 8.
8.DETECT MALFUNCTIONING PART
Check the Following.
 Check camshaft position sensor (PHASE) and circuit. Refer to EC-202, "
Diagnosis Procedure".
 Check crankshaft position sensor (POS) and circuit. Refer to EC-198, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair or replace. Then GO TO 4.
9.CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)
2. Perform initialization of NATS system and registration of all NATS ignition key IDs. Refer to SEC-7, "
ECM
RE-COMMUNICATING FUNCTION : Special Repair Requirement" or SEC-83, "ECM RE-COMMUNICAT-
ING FUNCTION : Special Repair Requirement".
>> GO TO 4.
10.CHECK IGNITION TIMING
PBIA8513J

INSPECTION AND ADJUSTMENT
EC-25
< BASIC INSPECTION >[HR16DE (WITH EURO-OBD)]
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NO >> Repair the timing chain installation. Then GO TO 4.
17.DETECT MALFUNCTIONING PART
Check the following.
 Check camshaft position sensor (PHASE) and circuit. Refer to EC-202, "
Diagnosis Procedure".
 Check crankshaft position sensor (POS) and circuit. Refer to EC-198, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 18.
NO >> Repair or replace. Then GO TO 4.
18.CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)
2. Perform initialization of NATS system and registration of all NATS ignition key IDs. Refer to SEC-7, "
ECM
RE-COMMUNICATING FUNCTION : Special Repair Requirement" or SEC-83, "ECM RE-COMMUNICAT-
ING FUNCTION : Special Repair Requirement".
>> GO TO 4.
19.INSPECTION END
If ECM is replaced during this BASIC INSPECTION procedure, go to EC-25, "
ADDITIONAL SERVICE WHEN
REPLACING CONTROL UNIT : Special Repair Requirement".
>> INSPECTION END
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description
INFOID:0000000001161124
When replacing ECM, this procedure must be performed.
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement
INFOID:0000000001161125
1.PERFORM INITIALIZATION OF NATS SYSTEM AND REGISTRATION OF ALL NATS IGNITION KEY IDS
Refer to SEC-7, "
ECM RE-COMMUNICATING FUNCTION : Special Repair Requirement".
>> GO TO 2.
2.PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
Refer to EC-26, "
ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Requirement".
>> GO TO 3.
3.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Refer to EC-27, "
THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement".
>> GO TO 4.
4.PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-27, "
IDLE AIR VOLUME LEARNING : Special Repair Requirement".
>> END
IDLE SPEED

EC-386
< BASIC INSPECTION >[HR16DE (WITHOUT EURO-OBD)]
INSPECTION AND ADJUSTMENT
2. Rev engine (2,000 to 3,000 rpm) two or three times under no
load, then run engine at idle speed for about 1 minute.
3. Check idle speed.
For procedure, refer to EC-389, "
IDLE SPEED : Special Repair
Requirement".
For specification, refer to EC-684, "
Idle Speed".
Is the inspection result normal?
YES >> GO TO 10.
NO >> GO TO 4.
4.PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Stop engine.
2. Perform EC-389, "
ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Require-
ment".
>> GO TO 5.
5.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform EC-390, "
THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement".
>> GO TO 6.
6.PERFORM IDLE AIR VOLUME LEARNING
Perform EC-390, "
IDLE AIR VOLUME LEARNING : Special Repair Requirement".
Is Idle Air Volume Learning carried out successfully?
YES >> GO TO 7.
NO >> Follow the instruction of Idle Air Volume Learning. Then GO TO 4.
7.CHECK TARGET IDLE SPEED AGAIN
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
For procedure, refer to EC-389, "
IDLE SPEED : Special Repair Requirement".
For specification, refer to EC-684, "
Idle Speed".
Is the inspection result normal?
YES >> GO TO 10.
NO >> GO TO 8.
8.DETECT MALFUNCTIONING PART
Check the Following.
 Check camshaft position sensor (PHASE) and circuit. Refer to EC-520, "
DTC Logic".
 Check crankshaft position sensor (POS) and circuit. Refer to EC-516, "
DTC Logic".
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair or replace. Then GO TO 4.
9.CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)
2. Perform initialization of NATS system and registration of all NATS ignition key IDs. Refer to SEC-7, "
ECM
RE-COMMUNICATING FUNCTION : Special Repair Requirement".
>> GO TO 4.
10.CHECK IGNITION TIMING
1. Run engine at idle.
PBIA8513J

EC-690
< BASIC INSPECTION >[MR18DE]
INSPECTION AND ADJUSTMENT
2. Rev engine (2,000 to 3,000 rpm) two or three times under no
load, then run engine at idle speed for about 1 minute.
3. Check idle speed.
For procedure, refer to EC-692, "
IDLE SPEED : Special Repair
Requirement".
For specification, refer to EC-1038, "
Idle Speed".
Is the inspection result normal?
YES >> GO TO 10.
NO >> GO TO 4.
4.PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Stop engine.
2. Perform EC-693, "
ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Require-
ment".
>> GO TO 5.
5.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform EC-694, "
THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement".
>> GO TO 6.
6.PERFORM IDLE AIR VOLUME LEARNING
Perform EC-694, "
IDLE AIR VOLUME LEARNING : Special Repair Requirement".
Is Idle Air Volume Learning carried out successfully?
YES >> GO TO 7.
NO >> Follow the instruction of Idle Air Volume Learning. Then GO TO 4.
7.CHECK TARGET IDLE SPEED AGAIN
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
For procedure, refer to EC-692, "
IDLE SPEED : Special Repair Requirement".
For specification, refer to EC-1038, "
Idle Speed".
Is the inspection result normal?
YES >> GO TO 10.
NO >> GO TO 8.
8.DETECT MALFUNCTIONING PART
Check the Following.
 Check camshaft position sensor (PHASE) and circuit. Refer to EC-866, "
DTC Logic".
 Check crankshaft position sensor (POS) and circuit. Refer to EC-862, "
DTC Logic".
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair or replace. Then GO TO 4
9.CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)
2. Perform initialization of NATS system and registration of all NATS ignition key IDs. Refer to SEC-7, "
ECM
RE-COMMUNICATING FUNCTION : Description".
>> GO TO 4.
10.CHECK IGNITION TIMING
1. Run engine at idle.
PBIA8513J

EC-692
< BASIC INSPECTION >[MR18DE]
INSPECTION AND ADJUSTMENT
17.DETECT MALFUNCTIONING PART
Check the following.
 Check camshaft position sensor (PHASE) and circuit. Refer to EC-866, "
DTC Logic".
 Check crankshaft position sensor (POS) and circuit. Refer to EC-862, "
DTC Logic".
Is the inspection result normal?
YES >> GO TO 18.
NO >> Repair or replace. Then GO TO 4
18.CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)
2. Perform initialization of NATS system and registration of all NATS ignition key IDs. Refer to SEC-7, "
ECM
RE-COMMUNICATING FUNCTION : Description".
>> GO TO 4.
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description
INFOID:0000000001161703
When replacing ECM, this procedure must be performed.
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement
INFOID:0000000001161704
1.PERFORM INITIALIZATION OF NATS SYSTEM AND REGISTRATION OF ALL NATS IGNITION KEY IDS
Refer to SEC-7, "
ECM RE-COMMUNICATING FUNCTION : Description".
>> GO TO 2.
2.PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
Refer to EC-693, "
ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Require-
ment".
>> GO TO 3.
3.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Refer to EC-694, "
THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement".
>> GO TO 4.
4.PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-694, "
IDLE AIR VOLUME LEARNING : Special Repair Requirement".
>> END
IDLE SPEED
IDLE SPEED : DescriptionINFOID:0000000001161705
This describes how to check the idle speed. For the actual procedure, follow the instructions in “BASIC
INSPECTION”.
IDLE SPEED : Special Repair RequirementINFOID:0000000001161706
1.CHECK IDLE SPEED
With CONSULT-III

INSPECTION AND ADJUSTMENT
EC-1055
< BASIC INSPECTION >[K9K]
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>> GO TO 3.
3.REPLACE ECM
Replace ECM.
>> GO TO 4.
4.WRITE ECM DATA
1. Turn ignition switch OFF, wait at least 30 seconds and then turn ON.
2. Perform “PRGRM REINITIALIZE” in WORK SUPPORT mode with CONSULT-III.
3. Perform “WRT DATA AFTR REPLC CPU” in WORK SUPPORT mode with CONSULT-III.
4. Perform initialization of NATS system and registration of all NATS ignition key IDs.
Refer to SEC-7, "
ECM RE-COMMUNICATING FUNCTION : Description" (with intelligent key system) or
SEC-83, "
ECM RE-COMMUNICATING FUNCTION : Description" (without intelligent key system).
5. Turn ignition switch OFF, wait at least 30 seconds and then turn ON.
6. Select “DATA MONITOR” mode in ECM with CONSULT-III.
7. Check that the “CODE PROGRAM” indication.
Which is displayed on CONSULT-III?
YES >> GO TO 6.
NO >> GO TO 5.
5.WRITE ECM DATA
1. Perform initialization of NATS system and registration of all NATS ignition key IDs.
Refer to SEC-7, "
ECM RE-COMMUNICATING FUNCTION : Description" (with intelligent key system) or
SEC-83, "
ECM RE-COMMUNICATING FUNCTION : Description" (without intelligent key system).
2. Turn ignition switch OFF, wait at least 30 seconds and then turn ON.
3. Select “DATA MONITOR” mode in ECM with CONSULT-III.
4. Check that the “CODE PROGRAM” indication.
Which is displayed on CONSULT-III?
YES >> GO TO 6.
NO >> Repeat above steps.
6.PERFORM VIN REGISTRATION
1. Start engine and warm it up to normal operating temperature.
NOTE:
The start-up phase may last up to 30 seconds.
2. Turn ignition switch OFF, wait at least 30 seconds and then turn ON.
3. Perform “VIN REGISTRATION” in WORK SUPPORT mode with CONSULT-III.
4. Follow the instruction of CONSULT-III display.
NOTE:
After replace ECM, stored DTC may appear on other control unit. Clear the malfunction memory of these
control unit.
>> END
EGR VOLUME CONTROL VALVE CLOSED POSITION LEARNING
EGR VOLUME CONTROL VALVE CLOSED POSITION LEARNING : Description
INFOID:0000000001162524
EGR Volume Control Valve Closed Position Learning is an operation to learn the fully closed position of the
EGR volume control valve by monitoring the EGR volume control valve control position sensor output signal.
EGR VOLUME CONTROL VALVE CLOSED POSITION LEARNING : Special Repair
Requirement
INFOID:0000000001162525
1.START
1. Turn ignition switch ON.
2. Perform “EGR ADAPTIVES” in WORK SUPPORT mode with CONSULT-III.

SEC-1
BODY EXTERIOR, DOORS, ROOF & VEHICLE SECURITY
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SECTION SEC
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CONTENTS
SECURITY CONTROL SYSTEM
WITH INTELLIGENT KEY SYSTEM
BASIC INSPECTION ....................................
4
DIAGNOSIS AND REPAIR WORKFLOW ..........4
Work Flow .................................................................4
INSPECTION AND ADJUSTMENT .....................7
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT ..........................................................
7
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Special Repair Requirement .......
7
ECM RE-COMMUNICATING FUNCTION ...................7
ECM RE-COMMUNICATING FUNCTION : De-
scription .....................................................................
7
ECM RE-COMMUNICATING FUNCTION : Spe-
cial Repair Requirement ............................................
7
FUNCTION DIAGNOSIS ...............................8
INTELLIGENT KEY SYSTEM/ENGINE
START FUNCTION .............................................
8
System Diagram ........................................................8
System Description ...................................................8
Component Parts Location ......................................10
Component Description ...........................................10
NATS (NISSAN ANTI-THEFT SYSTEM) ...........12
System Diagram ......................................................12
System Description .................................................12
Component Parts Location ......................................14
Component Description ..........................................14
DIAGNOSIS SYSTEM (BCM) ............................15
COMMON ITEM .........................................................15
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) .....................................................
15
IMMU ..........................................................................15
IMMU : CONSULT-III Function (BCM - IMMU) .......15
THEFT ALM ...............................................................16
THEFT ALM : CONSULT-III Function (BCM -
THEFT ALM) ...........................................................
16
DIAGNOSIS SYSTEM (INTELLIGENT KEY
UNIT) .................................................................
18
CONSULT-III Function (INTELLIGENT KEY) ..........18
COMPONENT DIAGNOSIS .........................21
U1000 CAN COMM CIRCUIT ...........................21
Description ...............................................................21
DTC Logic ................................................................21
Diagnosis Procedure ...............................................21
U1010 CONTROL UNIT (CAN) .........................22
Description ...............................................................22
DTC Logic ................................................................22
Diagnosis Procedure ...............................................22
Special Repair Requirement ....................................22
B2013 ID DISCORD I-KEY-STRG ....................23
Description ...............................................................23
DTC Logic ................................................................23
Diagnosis Procedure ...............................................23
B2190, P1614 NATS ANTENNA AMP. ............26
Description ...............................................................26
DTC Logic ................................................................26
Diagnosis Procedure ...............................................26
B2191, P1615 DIFFERENCE OF KEY .............29
Description ...............................................................29
DTC Logic ................................................................29
Diagnosis Procedure ...............................................29
B2192, P1611 ID DISCORD, IMMU-ECM .........30
Description ...............................................................30
DTC Logic ................................................................30
Diagnosis Procedure ...............................................30
B2193, P1612 CHAIN OF ECM-IMMU ..............32

SEC-2
Description ..............................................................32
DTC Logic ...............................................................32
Diagnosis Procedure ..............................................32
B2194 ID DISCORD IMMU-I-KEY .....................33
Description ..............................................................33
DTC Logic ...............................................................33
Diagnosis Procedure ..............................................33
B2552 INTELLIGENT KEY ................................34
Description ..............................................................34
DTC Logic ...............................................................34
Diagnosis Procedure ..............................................34
Special Repair Requirement ...................................34
B2590 ID DISCORD BCM-I-KEY .......................35
Description ..............................................................35
DTC Logic ...............................................................35
Diagnosis Procedure ..............................................35
P1610 LOCK MODE ..........................................36
Description ..............................................................36
DTC Logic ...............................................................36
Diagnosis Procedure ..............................................36
POWER SUPPLY AND GROUND CIRCUIT .....37
INTELLIGENT KEY UNIT .........................................37
INTELLIGENT KEY UNIT : Diagnosis Procedure ...37
BCM ...........................................................................38
BCM : Diagnosis Procedure ...................................38
KEY SWITCH .....................................................39
Description ..............................................................39
Component Function Check ...................................39
Diagnosis Procedure ..............................................39
Component Inspection ............................................41
IGNITION KNOB SWITCH .................................42
Description ..............................................................42
Component Function Check ...................................42
Diagnosis Procedure ..............................................42
Component Inspection ............................................44
STOP LAMP SWITCH (A/T) ..............................45
Diagnosis Procedure ..............................................45
STOP LAMP SWITCH (M/T) ..............................47
Diagnosis Procedure ..............................................47
VEHICLE SECURITY INDICATOR ....................49
Description ..............................................................49
Component Function Check .................................49
Diagnosis Procedure ..............................................49
SECURITY SYSTEM PRE-WIRING ..................51
Wiring Diagram - SECURITY SYSTEM PRE-WIR-
ING - .......................................................................
51
ECU DIAGNOSIS ........................................54
BCM (BODY CONTROL MODULE) ..................54
Reference Value .....................................................54
Wiring Diagram - INTELLIGENT KEY SYSTEM/
ENGINE START FUNCTION - ................................
55
Wiring Diagram - NATS - ........................................63
Fail Safe .................................................................68
DTC Inspection Priority Chart ...............................69
DTC Index ..............................................................69
INTELLIGENT KEY UNIT ..................................71
Reference Value .....................................................71
Fail Safe .................................................................71
DTC Inspection Priority Chart ...............................71
DTC Index ..............................................................71
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) .................
73
Reference Value .....................................................73
Fail Safe .................................................................73
DTC Index ..............................................................74
SYMPTOM DIAGNOSIS ............................75
INTELLIGENT KEY SYSTEM/ENGINE
START FUNCTION SYMPTOMS ......................
75
Symptom Table .......................................................75
NATS (NISSAN ANTI-THEFT SYSTEM)
SYMPTOMS .......................................................
76
Symptom Table .......................................................76
ON-VEHICLE MAINTENANCE ..................77
PRE-INSPECTION FOR DIAGNOSTIC ............77
Basic Inspection ......................................................77
Vehicle Security Operation Check ..........................77
ON-VEHICLE REPAIR ...............................79
INTELLIGENT KEY UNIT ..................................79
Removal and Installation .........................................79
WITHOUT INTELLIGENT KEY SYSTEM
BASIC INSPECTION ..................................
80
DIAGNOSIS AND REPAIR WORKFLOW .........80
Work Flow ...............................................................80
INSPECTION AND ADJUSTMENT ...................83
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT ........................................................
83
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Special Repair Requirement .....
83
ECM RE-COMMUNICATING FUNCTION .................83
ECM RE-COMMUNICATING FUNCTION : De-
scription ...................................................................
83
ECM RE-COMMUNICATING FUNCTION : Spe-
cial Repair Requirement .........................................
83
FUNCTION DIAGNOSIS ............................84

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.

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.