Infiniti Q45 1997 V8 4.1L DOHC Workshop Manual

infiniti :: Infiniti Q45t V8-4130cc 4.1L DOHC MFI
(VH41) (1997)

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Passenger Compartment

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Component Parts Harness Connector Location

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Technical Service Bulletins > Antitheft System - IVIS/NATS Key

Registration Procedure

Technical Service Bulletin # 99-046C

Antitheft System - IVIS/NATS Key Registration Procedure

Classification:EL99-021c

Reference:ITB99-046c

Date:November 20, 2002

ENGINE WILL NOT STARTIVIS/NATS SYSTEM DESCRIPTIONKEY REGISTRATION

This bulletin amends TTB99-046b updated Applied Vehicle information.Please discard all paper copies of that bulletin.
APPLIED VEHICLE(S):

1997 - 2001 Q45 (FY33)1999.5 - 2003 QX4 (JR50)2002 - 2003 I35 (CA33)2000 - 2001 I30 (CA33)1999 I30 (CA32)2000 - 2002 G20 (P11)

APPLIED VINS:All

APPLIED DATES:Start of production

Service Information

^

This bulletin covers two versions of the Infiniti Vehicle Immobilizer System/Nissan Anti-Theft System (IVIS/NATS). One of these systems, referredto as either "NATS V 2.0" or "NATS V 5.0", is standard equipment on the Applied Vehicles listed.

^

^

When the NATS ignition key, IMMU (Immobilizer control unit), or ECM (ECCS control unit) are replaced, C/U initialization is necessary. It is alsonecessary when registering keys and as part of many NATS Service Manual diagnostic procedures.

:IMPORTANT

The NATS "C/U Initialization and Key Registration" Procedures in this bulletin are only for the Applied Vehicles listed. Do not use theseprocedures on any other NATS equipped vehicles.

^

NATS V 2.0 and NATS V 5.0 are very similar except for the "C/U Initialization and Key Registration" Procedure. Each Version uses a differentProcedure.

:Special Service Notes

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Bulletins > Antitheft System - IVIS/NATS Key Registration Procedure > Page 15

Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)

NATS uses advanced anti-theft functions and requires CONSULT-II or CONSULT (where applicable) for service. This helps prevent "unauthorizedaccess" into the NATS registration procedure.

Key Registration Required
^

NATS will not allow the engine to start without the use of a registered ignition key. Infiniti models with NATS have a "transponder chip" in theignition key head.

^

If a vehicle will not start and the Dash Security lamp is ON solid, it is possible that the ignition keys were not properly registered into the vehicle'sImmobilizer control unit (IMMU).

^

When the NATS ignition key or IMMU are replaced, C/U Initialization and Key Registration MUST BE PERFORMED or THE VEHICLE WILLNOT START. This same procedure is also needed when registering new keys. It is part of many NATS Service Manual diagnostic procedures.

^ If any ignition keys need to be added or it any ignition key needs to be re-registered, ALL other ignition keys must be re-registered at the same time

or they will no longer start the vehicle.
Other Important Information
^

The NATS key code is permanently encoded to the NATS key ID chip at the time of its manufacture and cannot be changed. Recommend only usingInfiniti service parts (key blanks).
^ NATS does not activate the vehicle theft warning system.

^ A maximum of five ignition keys can be registered to the NATS.

:NOTE

The Owner's Manual for the vehicle you are working on can tell you how many keys came with the vehicle. This number varies from vehicle tovehicle.
Transponders
^ If a NATS-equipped vehicle experiences an intermittent no start incident, interference from another transponder could also be the cause.

^

Other vehicle ignition keys that have transponders or transponders such as the Mobil Speedpass(R) (see illustration) may be a source of interference.They may be too close (3/4 to 1 inch) to the registered key being used to start the vehicle.
^ In these cases, there will be a "DIFFERENCE OF KEY" code stored in the Engine Control Module (ECM). The MIL will not turn "ON" for this.
^ Once the vehicle is started, transponder interference will not cause the engine to stall.
^ To avoid transponder interference occurrences, advise the customer to keep all other transponders on separate key rings.

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Bulletins > Antitheft System - IVIS/NATS Key Registration Procedure > Page 16

Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)

System Components
^ NATS ignition key (with transponder chip).

^ NATS antenna amplifier located around the ignition key cylinder.
^ NATS Immobilizer control unit (works directly with ECM).
^ Security indicator (Light Emitting Diode, or LED), located on the dash.
System Operation
^ The NATS uses a digital radio frequency (RF) to transmit a key code between the NATS key ID chip (which is "embedded" in the NATS ignition

key) and the IMMU. When a registered NATS key transmits a valid code, the ECM will allow the engine to start.
^ If the correct code is not received, the IMMU will not transmit a valid code to the ECM. In which case the ECM will not let the engine start.
CONSULT-II NATS Program Card / NATS-E980U CONSULT Program Card usage:
^

For CONSULT-II use the NATS Program Card. CONSULT-II is fully compatible with early and later vehicles. This is the preferred tool for thisprocedure.
^

CONSULT is not compatible with some later vehicles. If CONSULT can and is to be used, the NATSE980U CONSULT program card must beloaded into CONSULT and initialized. The card must remain in CONSULT while servicing and diagnosing the NVIS or registering keys.

Information

prior to registration:Precautions

^ Collect all existing ignition keys from the customer.

:Note

ANY KEYS THAT ARE NOT REGISTERED AT THIS TIME WILL NO LONGER START THE VEHICLE.

^

Separate all NATS ignition keys and other transponders away from each other (take them off the key ring). Keep them separate during the whole keyregistration process.
^ Do not "crank" the engine/operate the starter during the key Registration Procedure.
^

Performing C/U initialization and key registration may not erase NATS DTC's stored in the ECM. YOU MUST CLEAR THE DTC's BYPRESSING ERASE IN THE SELF DIAGNOSTIC RESULTS DISPLAY OF CONSULT (step 7 in Key Confirmation, below).
^ It is recommended that you read through the entire service procedure before doing it for the first time.
NATS C/U Initialization and Key Registration Procedures:
This is sections divided into two procedures, NATS V 2.0 and NATS V 5.0.
Use the descriptions below to find which procedure applies to the vehicle being serviced.
Procedure 1; NATS V 2.0
For 1997-2001 Q45, 1999 I30,

1999.5 - 2000 QX4.
Procedure 2; NATS V 5.0
For 2002-2003 I35
2000-2001 I30,
2001-2003 QX4,
2000-2002 G20

Procedure 1

Registration:

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Bulletins > Antitheft System - IVIS/NATS Key Registration Procedure > Page 17

Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)

1.

Verify NATS software card is installed into software slot of the CONSULT-II unit. If CONSULT can and is being used, load and use the E980U(purple) card.

2. Connect CONSULT or CONSULT-II to the data link connector under the dash.

3.

Insert the ignition key and turn it to the "ON" position. Do not start the engine. CONSULT or CONSULT-II will load the NATS softwareautomatically. Wait for the START box to appear on CONSULT or CONSULT-II before proceeding.

4. Press the START box.

5. Select NATS V 2.0 if using CONSULT-II. If you are using CONSULT proceed to step 6.

6. Select C/U INITIALIZATION.

7. Press the START box on CONSULT or CONSULT-II.

8. When C/U Initialization is completed for IMMU, turn key (1st key) to "OFF/LOCK" position and pull it out.

Keep this first key separate from ALL the other keys for right now. It will be used later in step 12 below. WAIT AT LEAST 5 SECONDS, then goto step 9.

:NOTE

^ The key that was lust used is automatically registered at this stage.
^

During this process do not mix up the "registered" keys and the "unregistered" keys. Keep them in different piles during this process.Accidentally inserting a key at this point that is already "registered" will drop the system out of the registration mode. If that happens youwill have to start all over again and go back to step 3 above.

9. Insert the next key to be registered into the ignition and turn the key to the "ON" position. Do not start the engine.

10. Wait at least 5 seconds (for example, until the Air Bag light goes out), turn the key to "OFF/LOCK" and remove it.

11.

Repeat steps 9 and 10 for all remaining "unregistered" keys needing to be registered into the system. Remember, a maximum of five keys can beregistered.

12.

After registering and removing the last key, re-insert the first key registered and turn it to the "ON" position. This will take the system out of thekey registration mode.

13. Turn the key to "OFF" and remove the key.

14. Wait for the Security Lamp to start to blink (approximately 5 seconds). This will indicate that the system has reset. Proceed to Key Confirmation.

15. If INITIALIZATION STOPPED or FAILED is displayed on CONSULT or CONSULT-II during the above procedure.

a. Perform NATS SELF DIAGNOSIS. Repair any codes indicated.
b. Once NO SELF DIAGNOSIS FAILURE INDICATED is displayed, return to step 3 above.

Key Confirmation:

1. Confirm that the NATS security indicator is blinking. This verifies the completion of the Key ID Registration sequence.

2.

NOTE

Insert each key that was initialized during the Key Registration process and confirm that ALL the keys will successfully start the vehicle. Wait forthe system to reset in between each key check (see , below). Watch for the Security Lamp to begin blinking (approximately 5 seconds)between each confirmation of key operation, indicating the system has reset.

:NOTE

You must wait for the system to reset between each key check or key operation will not be confirmed.

3. Press BACK on the CONSULT or CONSULT-II screen.

4. Press BACK on the CONSULT or CONSULT-II screen again.

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Bulletins > Antitheft System - IVIS/NATS Key Registration Procedure > Page 18

Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)

5. Put any registered key into the ignition and turn it to the "ON" position.

6. Select SELF-DIAGNOSIS RESULTS to check for DTC's.

7. Press the ERASE box in SELF DIAG RESULTS to clear any DTC's set prior to repairs.

8. Turn ignition key to "OFF/LOCK" and remove it.

9. Turn off the CONSULT or CONSULT-II, disconnect the Data Link Connector and remove CONSULT or CONSULT-II from the vehicle.

Procedure 2

Registration:

1. Verify NATS software card is installed into software slot of the CONSULT-II unit.

2. Connect CONSULT-II to the data link connector under the dash.

3.

Insert the ignition key and turn it to the "ON" position. Do not start the engine. CONSULT-II will load the NATS software automatically. Wait forthe START box to appear on CONSULT-II before proceeding.

4. Press the START box.

5. Select NATS V 5.0.

6. Select C/U INITIALIZATION.

7. Input Password (PIN Code): 5523 (for North America)

8. Press the START box on CONSULT-II.

9.

When C/U Initialization is completed for IMMU, turn key to "OFF/LOCK" position and pull it out WAIT AT LEAST 5 SECONDS, then go tostep 10.

:NOTE

The key that was just used is NOT yet registered at this stage.

10. Insert the first key to be registered into the ignition and turn the key to the "ON" position. Do not start the engine.

11.

Wait at least 5 seconds (for example, until the Air Bag light goes out), turn the key to "OFF/LOCK" and remove it. Keep this first key separatefrom ALL the other keys for right now. It will be used later in step 13 below.

:NOTE

During this process do not mix up the "registered" keys and the "unregistered" keys. Keep them in different piles during this process.Accidentally inserting a key at this point that is already "registered" will drop the system out of the registration mode. If that happens you willhave to start all over again and go back to step 3 above.

12.

Repeat steps 10 and 11 for all remaining "unregistered" keys needing to be registered into the system. Remember, a maximum of five keys can beregistered.

13.

After registering and removing the last key, re-insert the first key registered and turn the key to the "ON" position. This will take the system out ofthe key registration mode.

14. Turn the key to "OFF" and remove the key.

15. Wait for the Security Lamp to start to blink (approximately 5 seconds). This will indicate that the system has reset. Proceed to Key Confirmation.

16. If INITIALIZATION STOPPED or FAILED is displayed on CONSULT-II during the above procedure:

a. Perform NATS SELF DIAGNOSIS. Repair any codes indicated.
b. Once NO SELF DIAGNOSIS FAILURE INDICATED is displayed, return to step 3 above.

Key Confirmation:

1. Confirm that the NATS security indicator is blinking. This verifies the completion of the Key ID Registration sequence.

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Bulletins > Antitheft System - IVIS/NATS Key Registration Procedure > Page 19

Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)

2.

NOTE

Insert each key that was initialized during the Key Registration process and confirm that ALL the keys will successfully start the vehicle. Wait forthe system to reset in between each key check (see , below). Watch for the Security Lamp to begin blinking (approximately 5 seconds)between each confirmation of key operation, indicating the system has reset.

:NOTE

You must wait for the system to reset between each key check or key operation will not be confirmed.

3. Press BACK on the CONSULT-II screen.

4. Press BACK on the CONSULT-II screen again.

5. Put any registered key into the ignition and turn it to the "ON" position.

6. Select SELF-DIAGNOSIS RESULTS to check for DTC's.

7.

In rare cases "CHAIN OF ECM-IMMU" is stored during the Key Registration process. Press the ERASE box if it appears in SELF DIAGRESULTS to clear this code or any DTC's set prior to repairs.

8. Turn ignition key to "OFF/LOCK" and remove it.

9. Turn off the CONSULT-II, disconnect the Data Link Connector and remove CONSULT-II from the vehicle.

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations > Passenger Compartment

Alarm Module: LocationsPassenger Compartment

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Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)

Passenger Compartment

Passenger Compartment

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Component Parts And Harness Connector Location

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Antitheft Relay > Component Information > Locations > Location of Electrical Units

Antitheft Relay: LocationsLocation of Electrical Units

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Page 28

Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)

Engine Compartment

Luggage Compartment

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Antitheft Relay > Component Information > Locations > Location of Electrical Units > Page 29

Component Parts Harness Connector Location

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Audio Control Relay > Component Information > Locations

Luggage Compartment

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Keyless Entry Relay > Component Information > Locations > Location of Electrical Units

Luggage Compartment

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Keyless Entry Relay > Component Information > Locations > Location of Electrical Units > Page 37

Component Parts And Carness Connector Location

> Relays and Modules > Relays and Modules - Body and Frame > Fuel Door Release Relay > Component Information > Locations

Luggage Compartment

> Relays and Modules > Relays and Modules - Body and Frame > Keyless Entry Relay > Component Information > Locations > Location of Electrical Units

Luggage Compartment

> Relays and Modules > Relays and Modules - Body and Frame > Keyless Entry Relay > Component Information > Locations > Location of Electrical Units > Page 46

Component Parts And Carness Connector Location

> Relays and Modules > Relays and Modules - Body and Frame > Power Seat Control Module > Component Information > Locations > Component Locations

Power Seat Control Module: Component Locations

> Relays and Modules > Relays and Modules - Body and Frame > Power Seat Control Module > Component Information > Locations > Component Locations > Page 51

Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)

IVMS Component Parts Location

Passenger Compartment

> Relays and Modules > Relays and Modules - Body and Frame > Power Seat Control Module > Component Information > Locations > Component Locations > Page 52

Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)

Passenger Compartment

> Relays and Modules > Relays and Modules - Body and Frame > Power Seat Control Module > Component Information > Locations > Component Locations > Page 53

Power Seat Control Module: Connector Locations

> Relays and Modules > Relays and Modules - Body and Frame > Power Seat Control Module > Component Information > Locations > Component Locations > Page 54

Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)

Passenger Compartment

Passenger Compartment

> Relays and Modules > Relays and Modules - Body and Frame > Sunroof / Moonroof Relay > Component Information > Locations

Passenger Compartment

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Locations > Location of Electrical Units

Electronic Brake Control Module: LocationsLocation of Electrical Units

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Locations > Location of

Electrical Units > Page 63

Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)

Passenger Compartment

Passenger Compartment

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Locations > Location of Electrical Units > Page 64

Components Parts And Harness Connector Location

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Locations > Page 65

Joint Connector (J/C) Terminal Arrangement

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Locations > Page 66

Electronic Brake Control Module: Description and Operation

ABS functions are controlled by the Traction Control Module. For more information, refer to Traction Control System.

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Traction Control Module > Component Information > Specifications

Traction Control Module: Specifications
TIGHTENING SPECIFICATIONS

Module Fasteners ....................................................................................................................................................... 3.9 - 5.9 Nm (34.7 - 52.0 inch lbs.)

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Components Parts And Harness Connector Location

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Traction Control Module: LocationsLocation of Electrical Units

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Traction Control Module > Component Information > Locations > Anti-Lock Brake System >

Page 73

Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)

Passenger Compartment

Passenger Compartment

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Traction Control Module > Component Information > Locations > Page 74

Joint Connector (J/C) Terminal Arrangement

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Traction Control Module > Component Information > Testing and Inspection > ABS-TCS Module

Traction Control Module: Testing and InspectionABS-TCS Module

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Module > Page 77

Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)

(Part 1 Of 2)

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Module > Page 78

Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)

(Part 2 Of 2)

Check that voltage between ABS/TCS control unit terminals is within the reference value.

The number below refer to the numbers in the charts.NOTE:

ABS warning lamp ON-OFF timing.*1:

ON - ignition switch "ON" (before engine starts) or when failure is sensed.

OFF - After engine starts (system in good operating condition)

Inflate tires to specifications.*2:
Use oscilloscope, checking when pulse occurs.*3:
Refer to ECM terminals and reference value.*4:
TCS OFF indicator ON-OFF timing*5:

ON - ignition switch "ON" (before engine starts) or failure is sensed (TCS OFF switch "ON".)OFF - After engine starts (system in good operating condition) and TCS OFF switch "OFF".

SLIP indicator ON-OFF timing.*6:

ON - ignition switch "ON" (before engine starts) or TCS in operationOFF - After engine starts and when TCS not operating.

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Traction Control Module > Component Information > Testing and Inspection > ABS-TCS Module > Page 79

Traction Control Module: Testing and InspectionThrottle Actuator Control (TAC) Control Unit

Using Multimeter

TAC Module Inspection Table For Digital Multimeter

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Traction Control Module > Component Information > Testing and Inspection > ABS-TCS

Module > Page 80

Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)

Check that voltage between ABS/TCS control unit terminals is within the following reference value.

Using CONSULT Scan Tool

TAC Module Inspection For CONSULT Scan Tool

Check that voltage between ABS/TCS control unit terminals is within the following reference value.

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Traction Control Module > Component Information > Service and Repair > Throttle Actuator Control (TAC) Control Unit

Traction Control Module: Service and RepairThrottle Actuator Control (TAC) Control Unit

The control unit is located on the passenger side, behind the RH kick panel.^ When disconnecting or connecting connectors, check terminals to ensure that they are not bent or otherwise damaged.^ When installing trim clips, be careful not to bend control unit bracket or bump control unit.

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Traction Control Module > Component Information > Service and Repair > Throttle Actuator Control (TAC) Control Unit > Page 83

Traction Control Module: Service and RepairABS-TCS Module

The control unit is located on the passenger side, behind dash, near the "A" pillar.^ When disconnecting or connecting connectors, check terminals to ensure that they are not bent or otherwise damaged.^ When installing trunk trim clips, be careful not to bend control unit bracket or bump control unit.

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Traction Control Relay > Component Information > Testing and Inspection > Throttle Motor Relay

Traction Control Relay: Testing and InspectionThrottle Motor Relay

^

With no (battery) voltage applied between terminal Nos. 1 and 2, there should be between terminal Nos. 3 and 5.no continuity

^

With battery voltage applied between terminal Nos. 1 and 2, there should be between terminal Nos. 3 and 5.continuity

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Traction Control Relay > Component Information > Testing and Inspection > Throttle Motor Relay > Page 88

Traction Control Relay: Testing and InspectionThrottle Motor

1. Remove intake manifold upper collector.2. Disconnect connector and manually push throttle valve to ensure that it moves from the fully closed position to the fully open position.3. With throttle valve set at fully closed position, apply (DC) across throttle motor terminal Nos. 1 and 2. Throttle valve must move in fully12 volts

closed direction.

> Relays and Modules > Relays and Modules - Cooling System > Radiator Cooling Fan Motor Relay > Component Information > Locations > Engine Compartment

Engine Compartment

> Relays and Modules > Relays and Modules - Cooling System > Radiator Cooling Fan Motor Relay > Component Information > Locations > Engine Compartment > Page 94

Luggage Compartment

> Relays and Modules > Relays and Modules - Cooling System > Radiator Cooling Fan Motor Relay > Component Information > Locations > Engine Compartment > Page 95

Radiator Cooling Fan Motor Relay: LocationsPassenger Compartment

> Relays and Modules > Relays and Modules - Cooling System > Radiator Cooling Fan Motor Relay > Component Information > Locations > Engine Compartment > Page 96

Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)

Passenger Compartment

Passenger Compartment

> Relays and Modules > Relays and Modules - Cooling System > Radiator Cooling Fan Motor Relay > Component Information > Locations > Page 97

Radiator Cooling Fan Motor Relay: Testing and Inspection

Cooling fan relays-1 and -2

Check continuity between terminals (3) and (5).