key INFINITI QX4 2005 Factory Manual PDF

AUTOMATIC BACK DOOR SYSTEM
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Trouble Diagnosis ProcedureEIS008R9
1. Check the trouble symptom and customer's requests.
2. Understand outline of system. Refer to BL-45, "
System Description" .
3. Confirm system operation.
4. Perform self-diagnosis procedures. Refer to BL-113, "
Self-Diagnosis Procedures" .
5. Refer to diagnosis chart by symptom, repair or replace any malfunctioning parts. Refer to BL-114, "
Diag-
nosis Chart" .
6. Inspection End.
Self-Diagnosis ProceduresEIS008RA
INPUT SIGNAL CHECK MODE
Input signal check mode allows testing of switch input signal to the back door control unit.
To activate input signal check mode on the automatic back door, perform the following steps:
1. Turn ignition switch OFF.
2. Turn back door close switch to CANCEL (system cancelled).
3. Place A/T selector lever in P position.
4. Using the inside emergency release lever, open the back door.
5. Have an assistant press and hold the back door handle switch.
6. While the assistant continues to hold the back door handle switch, turn ignition switch ON (DO NOT start
engine).
7. After approximately 5 seconds, the back door warning chime will sound for 0.5 seconds.
8. Release the back door handle switch.
9. Within 8 seconds of the back door warning chime sounding, press and hold the power liftgate switch.
10. After approximately 5 seconds, the back door warning chime will sound for 1 second.
11. Release the power liftgate switch.
12. The input signal check mode is now initialized.
The input signal check mode can test the following inputs. The back door warning chime will sound for approx-
imately 0.5 seconds each time a switch signal input occurs. Use this test when one of these inputs is not
responding during normal automatic back door operation.
*Back door warning chime should sound as soon as vehicle moves.
Turn ignition switch OFF to end input signal check mode.
OPERATING CHECK MODE
Operating check mode allows self-diagnosis of the automatic back door system.
To activate operating check mode on the automatic back door, perform the following steps:
1. Turn ignition switch OFF.
2. Turn back door close switch to CANCEL (system cancelled).
3. Place A/T selector lever in P position.
Switch signal Operation Refer to
Power liftgate switch OFF → ONBL-116
Back door close switch (CLOSE) OFF → ONBL-118
Back door close switch (CANCEL) OFF → ONBL-119
Back door handle switch OFF → ONBL-125
Glass switch OFF → ONBL-117
A/T device (park switch) P position → other than P positionAT-6 0
Vehicle speed* Vehicle speed —
Remote keyless entry signal Keyfob switch OFF → ONBL-44
Door lock/unlock signal LOCK → UNLOCKBL-16
Pinch strip LH signal OFF → ONBL-121
Pinch strip RH signal OFF → ONBL-121

AUTOMATIC BACK DOOR SYSTEM
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Back Door Power Supply and Ground Circuit InspectionEIS008RC
1. BACK DOOR POWER SUPPLY CIRCUIT INSPECTION
1. Turn ignition switch OFF.
2. Disconnect back door control unit.
3. Check voltage between back door control unit connector B55
terminals 3, 10 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
2. BACK DOOR GROUND CIRCUIT INSPECTION
Check continuity between back door control unit connector B55 ter-
minal 1, 2 and ground.
OK or NG
OK >> Circuit is OK.
NG >> Repair or replace harness.
During auto closing operations, if obstruction is detected, the
door does not operate in reverse.Back door motor assembly —
During close or cinch operations, the door does not operate in
reverse if the back door handle is operated.Handle switch systemBL-125
When the keyfob is operated, the back door does not operate
automatically.Remote keyless entry system inspectionBL-44Power window serial linkBL-112
Pinch strip system inspectionBL-121
Auto closure does not operate.Half-latch switch systemBL-122Cinch latch motor systemBL-126
Handle switch systemBL-125
The back door does not open.
(Closure motor rotation is not reversed.)Open switch systemBL-123
Handle switch systemBL-125
Warning chime does not sound. Back door warning chime systemBL-122
Auto closure operation works, but the back door is not fully
closedClose switch systemBL-124Handle switch systemBL-125
Cinch latch motor systemBL-126
Back door latch assembly mechanism dam-
aged or worn.— Symptom Suspect systems Refer to
3 - Ground : Approx. battery voltage
10 - Ground : Approx. battery voltage
WIIA0567E
1 - Ground : Continuity should exist.
2 - Ground : Continuity should exist.
LIIA0801E

FRONT DOOR LOCK
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FRONT DOOR LOCKPFP:80502
Component StructureEIS00629
Removal and InstallationEIS0062A
REMOVAL
1. Remove front door speaker. Refer to AV- 4 5 , “Removal and Installation of Front Door Speaker”.
2. Remove the front door speaker housing and vapor sheet.
3. Remove the door side grommet, and the bolt (TORX T30) from
the grommet hole.
4. While pulling the outside handle, remove the door key cylinder
assembly or escutcheon.
1. Grommet 2. Front door striker 3. Door lock assembly
4. Outside handle cable 5. Inside handle assembly 6. Inside handle cable
7. Door lock cable 8. Key cylinder rod (Driver side only) 9. Key cylinder
10. Outside handle bracket 11. Front gasket 12. Outside handle
13. Door key cylinder assembly (Driver
side) Outside handle escutcheon
(Passenger side)14. Rear gasket
WIIA0891E
Torx bolt 5.3 N·m (0.54 kg-m, 47 in-lb)
PIIA3553E
PIIA3554E

BL-132
FRONT DOOR LOCK
Revision: October 20052005 QX56
5. Separate the key cylinder rod from the door key cylinder assembly (if equipped).
6. While pulling the outside handle, slide it toward rear of vehicle to
remove.
7. Remove the front and rear gaskets.
8. Remove the TORX bolts (T30), and the door lock assembly.
9. While pulling the outside handle bracket, slide it toward the rear
of vehicle to remove it and the door lock assembly.
10. Disconnect the door lock actuator electrical connector.
LIIA0532E
PIIA3557E
Door lock assembly bolts 7.5 N·m (0.77 kg-m, 00 in-lb)
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PIIA3558E

FRONT DOOR LOCK
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Revision: October 20052005 QX56
11. Separate the outside handle cable connection from the outside
handle bracket.
INSTALLATION
Installation in the reverse order of removal.
CAUTION:
To install each rod, be sure to rotate the rod holder until a click is felt.
Disassembly and AssemblyEIS008RR
DOOR KEY CYLINDER ASSEMBLY
Remove the key cylinder escutcheon pawl and remove the door key cylinder.
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BL-138
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: October 20052005 QX56
System DescriptionEIS008RX
IVIS (Infinity Vehicle Immobilizer System-NATS) has the following immobilizer functions:

Since only IVIS (NATS) ignition keys, whose IDs have been registered into the ECM and BCM, allow the
engine to run, operation of a stolen vehicle without a IVIS (NATS) registered key is prevented by IVIS
(NATS).
IVIS (NATS) will immobilize the engine if someone tries to start it without the registered key of IVIS
(NATS).

All of the originally supplied ignition key IDs have been IVIS (NATS) registered.
If requested by the vehicle owner, a maximum of five key IDs can be registered into the IVIS (NATS) com-
ponents.

The security indicator blinks when the ignition switch is in OFF or ACC position. IVIS (NATS) warns out-
siders that the vehicle is equipped with the anti-theft system.

When IVIS (NATS) detects a malfunction, the security indicator lamp lights up while ignition key is in the
ON position.

IVIS (NATS) trouble diagnoses, system initialization and additional registration of other IVIS (NATS) igni-
tion key IDs must be carried out using CONSULT-II hardware and CONSULT-II IVIS (NATS) software.
When IVIS (NATS) initialization has been completed, the ID of the inserted ignition key is automatically
IVIS (NATS) registered. Then, if necessary, additional registration of other IVIS (NATS) ignition key IDs
can be carried out.
Regarding the procedures of IVIS (NATS) initialization and IVIS (NATS) ignition key ID registration, refer
to CONSULT-II Operation Manual NATS-IVIS/NVIS.

When servicing a malfunction of the IVIS (NATS) (indicated by lighting up of Security Indicator
Lamp) or registering another IVIS (NATS) ignition key ID, it may be necessary to re-register origi-
nal key identification. Therefore, be sure to receive ALL KEYS from vehicle owner.
System CompositionEIS008RY
The immobilizer function of the IVIS (NATS) consists of the following:

NATS ignition key

NATS antenna amp. located in the ignition key cylinder

Body control module (BCM)

Engine control module (ECM)

Security indicator
NOTE:
The communication between ECM and BCM uses the CAN communication system.
PIIA1121E

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
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ECM Re-communicating FunctionEIS0 08 RZ
The following procedure can automatically perform re-communication of ECM and BCM, but only when the
ECM has been replaced with a new one which has never been energized on-board.
(In this step, initialization procedure by CONSULT-II is not necessary)
NOTE:

When registering new key IDs or replacing the ECM other than brand new, refer to CONSULT-II
Operation Manual NATS-IVIS/NVIS.

If multiple keys are attached to the key holder, separate them before work.

Distinguish keys with unregistered key ID from those with registered ID.
1. Install ECM.
2. Using a registered key (*1), turn ignition switch to ON.
*1: 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.
If engine can be started, procedure is completed.
If engine cannot be started, refer to CONSULT-II Operation Manual NATS-IVIS/NVIS and initialize control
unit.

BL-142
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: October 20052005 QX56
6. Touch "OTHER".
7. Select “NATS V.5.0”.
If “NATS V5.0” is not indicated, go to GI-39, "
CONSULT-II Data
Link Connector (DLC) Circuit" .
8. Perform each diagnostic test mode according to each service
procedure.
For further information, see the CONSULT-II Operation Manual
NATS-IVIS/NVIS.
CONSULT-II DIAGNOSTIC TEST MODE FUNCTION
NOTE:

When any initialization is performed, all IDs previously registered will be erased and all NATS ignition keys
must be registered again.

The engine cannot be started with an unregistered key. In this case, the system will show “DIFFERENCE
OF KEY” or “LOCK MODE” as a self-diagnostic result on the CONSULT-II screen.

In rare case, “CHAIN OF ECM-IMMU” might be stored as a self-diagnostic result during key registration
procedure, even if the system is not malfunctioning.
LIIA0556E
SEL027X
SEL150X
CONSULT-II DIAGNOSTIC TEST
MODEDescription
C/U INITIALIZATIONWhen replacing any of the following components, C/U initialization and re-registration of all
NATS ignition keys are necessary.
[(NATS ignition key/ BCM/ ECM]
SELF-DIAG RESULTSDetected items (screen terms) are as shown in the chart.
Refer to BL-143, "
IVIS (NATS) SELF-DIAGNOSTIC RESULTS ITEM CHART" .

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
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HOW TO READ SELF-DIAGNOSTIC RESULTS
IVIS (NATS) SELF-DIAGNOSTIC RESULTS ITEM CHART
PIIA1124E
Detected items
[IVIS (NATS) program card screen
terms]P No. Code
(Self-diagnostic
result of
“ENGINE”)Malfunction is detected when.....Reference
page
CHAIN OF ECM-IMMU
[P1612]NATS MAL-
FUNCTION
P1612Communication impossible between ECM and BCM
In rare case, “CHAIN OF ECM-IMMU” might be stored
during key registration procedure, even if the system is
not malfunctioning.Refer to
BL-147
.
DIFFERENCE OF KEY
[P1615]NATS MAL-
FUNCTION
P1615BCM can receive the key ID signal but the result of ID
verification between key ID and BCM is NG.Refer to
BL-148
.
CHAIN OF IMMU-KEY
[P1614]NATS MAL-
FUNCTION
P1614BCM cannot receive the key ID signal.Refer to
BL-151
.
ID DISCORD, IMM-ECM
[P1611]NATS MAL-
FUNCTION
P1611The result of ID verification between BCM and ECM is
NG. System initialization is required.Refer to
BL-149
.
LOCK MODE
[P1610]NATS MAL-
FUNCTION
P1610When the starting operation is carried out five or more
times consecutively under the following conditions, IVIS
(NATS) will shift the mode to one which prevents the
engine from being started.

Unregistered ignition key is used.

BCM or ECM malfunctioning.Refer to
BL-150
.
DON'T ERASE BEFORE CHECK-
ING ENG DIAG—All engine trouble codes except IVIS (NATS) trouble code
has been detected in ECM.Refer to
BL-144
.

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
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Revision: October 20052005 QX56
Trouble DiagnosesEIS008S4
SYMPTOM MATRIX CHART 1
Self-diagnosis related item
*: When IVIS (NATS) detects a malfunction, the security indicator lights up while ignition key is in the “ON” position.SymptomDisplayed “SELF-DIAG
RESULTS” on CON-
SULT-II screen.Diagnostic Procedure
(Reference page)System
(Malfunctioning part or
mode)Reference Part No. Of
Illustration On System
Diagram

Security indicator
lighting up*

Engine cannot be
startedCHAIN OF ECM-IMMU
[P1612]PROCEDURE 1
(BL-147
)In rare case, “CHAIN OF
ECM-IMMU” might be
stored during key regis-
tration procedure, even if
the system is not mal-
functioning.—
Open circuit in battery
voltage line of BCM cir-
cuitC1
Open circuit in ignition
line of BCM circuitC2
Open circuit in ground
line of BCM circuitC3
Open or short circuit
between BCM and ECM
communication lineC4
ECM B
BCM A
DIFFERENCE OF KEY
[P1615]PROCEDURE 2
(BL-148
)Unregistered key D
BCM A
CHAIN OF IMMU-KEY
[P1614]PROCEDURE 5
(BL-151
)Malfunction of key ID
chipE5
Communication line
between ANT/ AMP and
BCM:
Open circuit or short cir-
cuit of battery voltage
line or ground lineE1
E2
Open circuit in power
source line of ANT/ AMP
circuitE3
Open circuit in ground
line of ANT/ AMP circuitE4
NATS antenna amp. E6
BCM A
ID DISCORD, IMM-ECM
[P1611]PROCEDURE 3
(BL-149
)System initialization has
not yet been completed.F
ECM B
LOCK MODE
[P1610]PROCEDURE 4
(BL-150
)LOCK MODE D
Security indicator light-
ing up*DON'T ERASE
BEFORE CHECKING
ENG DIAGWORK FLOW
(BL-144
)Engine trouble data and
IVIS (NATS) trouble data
have been detected in
ECM—