key battery INFINITI QX56 2006 Factory Owner's Manual

BL-86
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: November 20092006 QX56
Terminals and Reference Value for IPDM E/REIS0060K
1*: when horn reminder is ON.
2*: L/W is for USA.
3*: Y is for Canada.
CONSULT-II Function (BCM)EIS0060L
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II INSPECTION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
Te r m i n a l Wire
Color Item
Condition Voltage (V)
(Approx.)
38 B Ground —0
39 L CAN-H ——
40 P CAN-L ——
41 Y/B Hood switch Hood closed
OFF 0V
Hood open ONBattery voltage
45 G/W Horn relay When doors locks are operated
using keyfob (OFF →
ON) *1 Battery voltage
→ 0V
52 L Headlamp low (LH) Ignition
SW ON Lighting
switch
2ND posi-
tion OFF
0V
ON Battery voltage
54 R/Y Headlamp low (RH) Ignition
SW ON Lighting
switch
2ND posi-
tion OFF
0V
ON Battery voltage
55 G Headlamp high (LH) Ignition
SW ON Lighting
switch
HIGH or
PA S S
position OFF
0V
ON Battery voltage
56 L/W *2
Y *3 Headlamp high (RH) Ignition
SW ON Lighting
switch
HIGH or
PA S S
position OFF
0V
ON Battery voltage
59 B Ground —0
BCM
diagnostic test item Diagnostic mode
Description
Inspection by part WORK SUPPORT
Supports inspections and adjustments. Commands are transmitted to the
BCM for setting the status suitable for required operation, input/output sig-
nals are received from the BCM and received date is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to
them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be
read.
ECU PART NUMBER BCM part number can be read. CONFIGURATION Performs BCM configuration read/write functions.

VEHICLE SECURITY (THEFT WARNING) SYSTEMBL-91
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Symptom ChartEIS0060O
*1: Make sure the system is in the armed phase.SYMPTOM PROCEDURE Diagnostic procedure
1 Vehicle security
system cannot be
set by
···· Door switch Refer to
BL-92, "
Door Switch Check" .
Lock/unlock switch Refer to BL-98, "
Door Lock/Unlock Switch Check" .
Door outside key Refer to BL-96, "
Front Door Lock Assembly LH (Key Cylinder Switch)
Check" .
BCM If the above systems are “OK ”, replace BCM. Refer to BCS-20, "
BCM" .
2 Security indicator
does not turn
“
ON ”. Combination meter Refer to BL-95, "
Combination Meter (Security Indicator Lamp) Check" .
BCM If the above systems are “OK ”, replace BCM. Refer to BCS-20, "
BCM" .
3 *1 Vehicle secu-
rity system does
not alarm when
···· Any door, hood or glass hatch
is opened. Refer to BL-92, "
Door Switch Check" .
Refer to BL-94, "
Hood Switch Check" .
If the above systems are “ OK”, replace BCM. Refer to BCS-20, "
BCM" .
4 Vehicle security
alarm does not
activate. Horn alarm
Refer to BL-98, "
Vehicle Security Horn Alarm Check" .
If the above systems are “ OK”, check horn system.
Refer to WW-55, "
HORN" .
Headlamp alarm Refer to BL-98, "
Vehicle Security Headlamp Alarm Check" .
If the above systems are “ OK”, replace BCM. Refer to BCS-20, "
BCM" .
5 Vehicle security
system cannot be
canceled by
····Door outside key
Refer to BL-96, "
Front Door Lock Assembly LH (Key Cylinder Switch)
Check" .
If the above systems are “ OK”, check main power window and door lock/
unlock switch.
Keyfob Check remote keyless entry function. Refer to
BL-65, "
Keyfob Battery and
Function Check" .
If the above systems are “ OK”, replace BCM. Refer to BCS-20, "
BCM" .

BL-100
AUTOMATIC BACK DOOR SYSTEM
Revision: November 20092006 QX56
System DescriptionEIS0060X
NOTE:
The automatic back door system must be initialized by fully closing the back door anytime the battery
or the back door control unit has been disconnected.
The automatic back door system consists of a one piece unit that combines the back door control unit along
with the back door motor, back door clutch and the back door encoder. The back door latch contains a lock
function that can control the two functions of automatic back door latch closure and electrical opener with a
single motor when you close the back door to the halfway-state.

Back door auto closure
When the back door is closed to the halfway state (half-latch) position, the motor automatically drives to
rotate the latch lever and pull it in from half latched to full latched.

Power back door
With the back door closed, press the power liftgate switch or press the keyfob button, or pull the back door
handle with the back door unlocked, the back door latch motor opens the locking plate and releases the
latch. The back door motor then raises the door to the full open position.
With the back door fully open, press the power liftgate switch, remote keyless entry button or the back
door close switch, the back door motor closes the door to the half-latch state. The back door latch motor
then drives the latch to the full close position.
At the onset of each power open or power close application, the hazard lamps will flash 3 times and the
warning chime will sound 3 times lasting a total of 2 seconds.
OPERATION DESCRIPTION
Power Liftgate Switch Operation (Fully Closed → Fully Open Operation)

When the power liftgate switch is pressed, back door control unit terminal 23 receives the signal.

The back door control unit checks the A/T selector lever (P position) through terminal 18, vehicle speed
through terminal 21, ignition status through terminal 7, glass hatch is closed through terminal 17 and bat-
tery voltage is present through terminal 3.

When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a 5 volt signal through terminal 6 and grounds terminal 9 to sound the warning chime, sends
a signal to the BCM through terminal 4 to flash the hazard lamps and unlocks the back door latch through
terminal 12.

The back door control unit supplies power to the magnetic clutch and the back door motor and moves the
back door in the open direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door is opened to the full-open position, the full-open position is detected by the encoder,
and the back door control unit switches the back door motor OFF and the magnetic clutch is pulsed and
then turned OFF.

The back door is held in the fully open position by the gas stays.
Remote Keyless Entry Operation (Fully Closed → Fully Open Operation)

When the keyfob button is pressed for at least 0.5 seconds, back door control unit terminal 21 receives
the signal.

The back door control unit checks the A/T selector lever (P position) through terminal 18, vehicle speed
through terminal 21, ignition status through terminal 7, glass hatch is closed through terminal 17 and bat-
tery voltage is present through terminal 3.

When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a 5 volt signal through terminal 6 and grounds terminal 9 to sound the warning chime, sends
a signal to the BCM through terminal 4 to flash the hazard lamps and unlocks the back door latch through
terminal 12.

The back door control unit supplies power to the magnetic clutch and the back door motor and moves the
back door in the open direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door is opened to the full-open position, the full-open position is detected by the encoder,
and the back door control unit switches the back door motor OFF and the magnetic clutch is pulsed and
then turned OFF.

The back door is held in the fully open position by the gas stays.

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Back Door Handle Switch Operation (Fully Closed → Fully Open Operation)

When the back door handle is pulled, back door control unit terminal 26 receives the signal.

The back door control unit checks that the back door is unlocked and checks the A/T selector lever (P
position) through terminal 18, vehicle speed through terminal 21, ignition status through terminal 7, glass
hatch is closed, battery voltage and back door close switch position through terminal 13.

When the back door control unit receives the signal, if all auto back door operating enable conditions are
met, it sends a 5 volt signal through terminal 6 and grounds terminal 9 to sound the warning chime, sends
a signal to the BCM through terminal 4 to flash the hazard lamps and unlocks the back door latch through
terminal 12.

The back door control unit supplies power to the magnetic clutch and the back door motor and moves the
back door in the open direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door is opened to the full-open position, the full-open position is detected by the encoder,
and the back door control unit switches the back door motor OFF and the magnetic clutch is pulsed and
then turned OFF.

The back door is held in the fully open position by the gas stays.
Power Liftgate Switch Operation (Fully Open → Fully Closed Operation)

When the power liftgate switch is pressed, the back door control unit terminal 23 receives the signal.

The back door control units checks door position through the rotary encoder.

When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a signal through terminal 6 and grounds terminal 9 to sound the warning chime and sends a
signal to the BCM through terminal 4 to flash the hazard lamps.

The back door control unit supplies power to the magnetic clutch and the back door motor and move the
back door in the close direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door reaches the half-latch state, the half-latch switch detects this and the signal is sent to
the back door control unit terminal 22.

When the back door control unit receives the half latch switch signal, it switches OFF the back door motor
and the magnetic clutch and operates the cinch latch motor.

When the back door latch operates and full close is detected through terminal 14 of the back door control
unit, the cinch latch motor reverses to the neutral position and the back door auto closure operation ends
and the door is fully closed.
Remote Keyless Entry Operation (Fully Open → Fully Closed Operation)

When the keyfob is pressed for at least 0.5 seconds, the back door control unit terminal 21 receives the
signal.

The back door control units checks door position through the rotary encoder.

When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a signal through terminal 6 and grounds terminal 9 to sound the warning chime and sends a
signal to the BCM through terminal 4 to flash the hazard lamps.

The back door control unit supplies power to the magnetic clutch and the back door motor and move the
back door in the close direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door reaches the half-latch state, the half-latch switch detects this and the signal is sent to
the back door control unit terminal 22.

When the back door control unit receives the half latch switch signal, it switches OFF the back door motor
and the magnetic clutch and operates the cinch latch motor.

When the back door latch operates and full close is detected through terminal 14 of the back door control
unit, the cinch latch motor reverses to the neutral position and the back door auto closure operation ends
and the door is fully closed.

BL-102
AUTOMATIC BACK DOOR SYSTEM
Revision: November 20092006 QX56
Back Door Close Switch Operation (Fully Open → Fully Closed Operation)

When the back door close switch is pressed, the back door control unit terminal 8 receives the signal.

The back door control units checks back door close switch terminal 13 status and door position (must be
fully opened), through rotary encoder and battery voltage.

When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a signal through terminal 6 and grounds terminal 9 to sound the warning chime and sends a
signal to the BCM through terminal 4 to flash the hazard lamps.

The back door control unit supplies power to the magnetic clutch and the back door motor and move the
back door in the close direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door reaches the half-latch state, the half-latch switch detects this and the signal is sent to
the back door control unit terminal 22.

When the back door control unit receives the half latch switch signal, it switches OFF the back door motor
and the magnetic clutch and operates the cinch latch motor.

When the back door latch operates and full close is detected through terminal 14 of the back door control
unit, the cinch latch motor reverses to the neutral position and the back door auto closure operation ends
and the door is fully closed.
Reversal
The door will reverse direction during power open or close operation if the automatic door main switch, keyfob
or back door close switch is operated. A chime will sound to announce the reversal.
Anti-Pinch Function

During auto operation, if an object is detected in the door's path, a warning chime sounds and the back
door operates in the reverse direction to prevent pinching.

During auto close operation, if an object is detected by the pinch strips in the door's path, a warning chime
sounds and the back door operates in the open direction until it is fully open.
Gas Stay Check

During each power open operation, the back door control unit monitors motor current draw to determine if
the gas stays are functioning properly.

If a malfunction of the gas stays is detected, the back door control unit will close the back door while
sounding the warning chime. The back door cannot be opened using the switches until the gas stay mal-
function is repaired.
Warning Functions

The hazard warning lamps flash and a warning chime is sounded according to the back door operating
state, operations, and conditions.

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Auto Back Door Operation Enable Conditions
Control When Operating Enable Conditions Not Met During Power Open/Close
Control When Operating Enable Conditions No Longer Met
Operation Power liftgate switchRemote keyless entry Back door handle switch Back door
close switch
Operating direction Fully closed
→
open Fully open
→
closed Fully closed
→
open Fully open
→ closed Fully closed
→
open Fully open
→
closed Fully open
→
closed
Close
switch CANCEL or NEUTRAL
NEUTRALNEUTRAL
Vehicle stop
condition A/T selector
lever in P or N
range and vehi-
cle speed less
than 2 km/h or ignition switch
in OFF position —A/T selector
lever in P or N
range and vehi-
cle speed less
than 2 km/h or ignition switch
in OFF position —A/T selector
lever in P or N
range and vehi-
cle speed less
than 2 km/h or ignition switch
in OFF position ——
Battery volt-
age Approx. 11V or more
Back door
lock status ————
Unlocked——
Glass hatch Closed
ItemsOperation condition Not met caseControl
A/T selector lever P position P or N position with ignition ON
or any position with ignition
OFFOther
Continue power open or close,
but sounds warning chime.
Back door close switch NEUTRAL CANCEL
Cancels power open/close
operation or door will release to
manual mode.
Voltage drop
11V or more11 > V > 9
9 > V > reset voltage
reset voltage > V
No power function available
Handle switch Normal (GND)Error (OPEN) No operation. Cancel power
open/close release to manual.
Glass hatch ClosedOFF Cancels power door open oper-
ation, door will release to man-
ual mode.
Description
Operation Control
Back door close switch turned to CANCEL Warning chime active
→
Shift to manual mode after full open or
close operation is complete
(Recovery to power mode when main
switch turned OFF or door fully closed) →
Shift to manual mode
A/T selector lever P or N position with igni-
tion switch ON Warning chime active and one-way opera-
tion continuous
(Warning chime inactive and door fully
open or fully closed or operating conditions
recovered)Full open: power close operation allowed
Full close: operating conditions not met
→
no power open function.
Voltage drop 11 - 9V One-way operation continued (equivalent
to the case of starting voltage
← 11 V f o r
handle operation with warning chime
active) Not allowed
Voltage drop less than 9V
(Microcomputer reset voltage - clutch hold
voltage)

Motor stopped

Clutch may slip

Control not possible because microcom-
puter being reset Control not possible because microcom-
puter being reset

AUTOMATIC BACK DOOR SYSTEMBL-115
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Revision: November 2009 2006 QX56
Back Door Power Supply and Ground Circuit InspectionEIS00615
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 system
BL-125
When the keyfob is operated, the back door does not operate
automatically. Remote keyless entry system inspection
BL-44Power window serial linkBL-112
Pinch strip system inspectionBL-121
Auto closure does not operate. Half-latch switch system
BL-122Cinch latch motor systemBL-126
Handle switch systemBL-125
The back door does not open.
(Closure motor rotation is not reversed.) Open switch system
BL-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
closed Close switch system
BL-124Handle switch systemBL-125
Cinch latch motor systemBL-126
Back door latch assembly mechanism dam-
aged or worn. —
Symptom
Suspect systemsRefer to
3 - Ground: Approx. battery voltage
10 - Ground : Approx. battery voltage
WIIA0567E
1 - Ground: Continuity should exist.
2 - Ground : Continuity should exist.
LIIA0801E

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)BL-145
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Revision: November 2009 2006 QX56
Trouble DiagnosesEIS0061O
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.
Symptom
Displayed
“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
started CHAIN 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-
cuit C1
Open circuit in ignition
line of BCM circuit C2
Open circuit in ground
line of BCM circuit C3
Open or short circuit
between BCM and ECM
communication line C4
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
chip
E5
Communication line
between ANT/ AMP and
BCM:
Open circuit or short cir-
cuit of battery voltage
line or ground line E1
E2
Open circuit in power
source line of ANT/ AMP
circuit E3
Open circuit in ground
line of ANT/ AMP circuit E4
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 DIAG WORK FLOW
(BL-144
) Engine trouble data and
IVIS (NATS) trouble data
have been detected in
ECM
—

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)BL-147
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Diagnostic Procedure 1EIS0061P
Self-diagnostic results:
“CHAIN OF ECM-IMMU” displayed on CONSULT-II screen
First perform the “SELF-DIAG RESULTS” in “BCM” with CONSULT-II, then perform the trouble diagno-
sis of malfunction system indicated “SELF-DIAG RESULTS” of “BCM”. Refer to BL-141, "
CONSULT-II"
.
1. CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS “CHAIN OF ECM-IMMU”
displayed on CONSULT-II screen.
NOTE:
In rare case, “CHAIN OF ECM-IMMU ” might be stored during key
registration procedure, even if the system is not malfunctioning.
Is CONSULT-II screen displayed as above?
YES >> GO TO 2.
NO >> GO TO BL-145, "
SYMPTOM MATRIX CHART 1" .
2. CHECK POWER SUPPLY CIRCUIT FOR BCM
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connector M20 terminal 70 and ground.
OK or NG
OK >> GO TO 3.
NG >> Check the following:

50A fusible link (letter f , located in fuse and fusible
link box)

Harness for open or short between fuse and BCM
connector. Ref. Part No. C1
3. CHECK IGN SW. ON SIGNAL
1. Turn ignition switch ON.
2. Check voltage between BCM connector M18 terminal 38 and ground.
OK or NG
OK >> GO TO 4.
NG >> Check the following:

10A fuse [No. 59, located in the fuse and relay box]

Harness for open or short between fuse and BCM
connector. Ref. part No. C2
PIIA1260E
70 - Ground :Battery voltage
LIIA1279E
38 - Ground :Battery voltage
LIIA0527E

BL-152
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: November 20092006 QX56
4. CHECK POWER SUPPLY FOR NATS ANTENNA AMP.
1. Turn ignition switch ON.
2. Check voltage between NATS antenna amp. connector M21 terminal 1 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace fuse or harness. Ref. part No. E3
5. CHECK NATS ANTENNA AMP. SIGNAL LINE- 1
Check voltage between NATS antenna amp. connector M21 terminal
2 and ground with analog tester.
OK or NG
OK >> GO TO 6.
NG >>

Repair or replace harness.
NOTE:
If harness is OK, replace BCM, perform initialization with CONSULT-II. For initialization, refer to
“CONSULT-II Operation Manual NATS-IVIS/NVIS ”.
1 - Ground
:Battery voltage
LIIA1498E
LIIA1642E
Connector terminals
(wire colors) Position of ignition key cylinder Voltage (V)
(Approx.)
( + ) ( - )
2 Ground Before inserting ignition key
Battery voltage
After inserting ignition key Pointer of tester should move for approx. 30 seconds,
then return to battery voltage
Just after turning ignition switch ON Pointer of tester should move for approx. 1 second,
then return to battery voltage